src/client/content_cao.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "content_cao.h"
  21 #include <IBillboardSceneNode.h>
  22 #include <ICameraSceneNode.h>
  23 #include <ITextSceneNode.h>
  24 #include <IMeshManipulator.h>
  25 #include <IAnimatedMeshSceneNode.h>
  26 #include "client/client.h"
  27 #include "client/renderingengine.h"
  28 #include "client/sound.h"
  29 #include "client/tile.h"
  30 #include "util/basic_macros.h"
  31 #include "util/numeric.h" // For IntervalLimiter & setPitchYawRoll
  32 #include "util/serialize.h"
  33 #include "camera.h" // CameraModes
  34 #include "collision.h"
  35 #include "content_cso.h"
  36 #include "environment.h"
  37 #include "itemdef.h"
  38 #include "localplayer.h"
  39 #include "map.h"
  40 #include "mesh.h"
  41 #include "nodedef.h"
  42 #include "serialization.h" // For decompressZlib
  43 #include "settings.h"
  44 #include "sound.h"
  45 #include "tool.h"
  46 #include "wieldmesh.h"
  47 #include <algorithm>
  48 #include <cmath>
  49 #include "client/shader.h"
  50 #include "client/minimap.h"
  51
  52 class Settings;
  53 struct ToolCapabilities;
  54
  55 std::unordered_map<u16, ClientActiveObject::Factory> ClientActiveObject::m_types;
  56
  57 template<typename T>
  58 void SmoothTranslator<T>::init(T current)
  59 {
  60         val_old = current;
  61         val_current = current;
  62         val_target = current;
  63         anim_time = 0;
  64         anim_time_counter = 0;
  65         aim_is_end = true;
  66 }
  67
  68 template<typename T>
  69 void SmoothTranslator<T>::update(T new_target, bool is_end_position, float update_interval)
  70 {
  71         aim_is_end = is_end_position;
  72         val_old = val_current;
  73         val_target = new_target;
  74         if (update_interval > 0) {
  75                 anim_time = update_interval;
  76         } else {
  77                 if (anim_time < 0.001 || anim_time > 1.0)
  78                         anim_time = anim_time_counter;
  79                 else
  80                         anim_time = anim_time * 0.9 + anim_time_counter * 0.1;
  81         }
  82         anim_time_counter = 0;
  83 }
  84
  85 template<typename T>
  86 void SmoothTranslator<T>::translate(f32 dtime)
  87 {
  88         anim_time_counter = anim_time_counter + dtime;
  89         T val_diff = val_target - val_old;
  90         f32 moveratio = 1.0;
  91         if (anim_time > 0.001)
  92                 moveratio = anim_time_counter / anim_time;
  93         f32 move_end = aim_is_end ? 1.0 : 1.5;
  94
  95         // Move a bit less than should, to avoid oscillation
  96         moveratio = std::min(moveratio * 0.8f, move_end);
  97         val_current = val_old + val_diff * moveratio;
  98 }
  99
 100 void SmoothTranslatorWrapped::translate(f32 dtime)
 101 {
 102         anim_time_counter = anim_time_counter + dtime;
 103         f32 val_diff = std::abs(val_target - val_old);
 104         if (val_diff > 180.f)
 105                 val_diff = 360.f - val_diff;
 106
 107         f32 moveratio = 1.0;
 108         if (anim_time > 0.001)
 109                 moveratio = anim_time_counter / anim_time;
 110         f32 move_end = aim_is_end ? 1.0 : 1.5;
 111
 112         // Move a bit less than should, to avoid oscillation
 113         moveratio = std::min(moveratio * 0.8f, move_end);
 114         wrappedApproachShortest(val_current, val_target,
 115                 val_diff * moveratio, 360.f);
 116 }
 117
 118 void SmoothTranslatorWrappedv3f::translate(f32 dtime)
 119 {
 120         anim_time_counter = anim_time_counter + dtime;
 121
 122         v3f val_diff_v3f;
 123         val_diff_v3f.X = std::abs(val_target.X - val_old.X);
 124         val_diff_v3f.Y = std::abs(val_target.Y - val_old.Y);
 125         val_diff_v3f.Z = std::abs(val_target.Z - val_old.Z);
 126
 127         if (val_diff_v3f.X > 180.f)
 128                 val_diff_v3f.X = 360.f - val_diff_v3f.X;
 129
 130         if (val_diff_v3f.Y > 180.f)
 131                 val_diff_v3f.Y = 360.f - val_diff_v3f.Y;
 132
 133         if (val_diff_v3f.Z > 180.f)
 134                 val_diff_v3f.Z = 360.f - val_diff_v3f.Z;
 135
 136         f32 moveratio = 1.0;
 137         if (anim_time > 0.001)
 138                 moveratio = anim_time_counter / anim_time;
 139         f32 move_end = aim_is_end ? 1.0 : 1.5;
 140
 141         // Move a bit less than should, to avoid oscillation
 142         moveratio = std::min(moveratio * 0.8f, move_end);
 143         wrappedApproachShortest(val_current.X, val_target.X,
 144                 val_diff_v3f.X * moveratio, 360.f);
 145
 146         wrappedApproachShortest(val_current.Y, val_target.Y,
 147                 val_diff_v3f.Y * moveratio, 360.f);
 148
 149         wrappedApproachShortest(val_current.Z, val_target.Z,
 150                 val_diff_v3f.Z * moveratio, 360.f);
 151 }
 152
 153 /*
 154         Other stuff
 155 */
 156
 157 static void setBillboardTextureMatrix(scene::IBillboardSceneNode *bill,
 158                 float txs, float tys, int col, int row)
 159 {
 160         video::SMaterial& material = bill->getMaterial(0);
 161         core::matrix4& matrix = material.getTextureMatrix(0);
 162         matrix.setTextureTranslate(txs*col, tys*row);
 163         matrix.setTextureScale(txs, tys);
 164 }
 165
 166 // Evaluate transform chain recursively; irrlicht does not do this for us
 167 static void updatePositionRecursive(scene::ISceneNode *node)
 168 {
 169         scene::ISceneNode *parent = node->getParent();
 170         if (parent)
 171                 updatePositionRecursive(parent);
 172         node->updateAbsolutePosition();
 173 }
 174
 175 /*
 176         TestCAO
 177 */
 178
 179 class TestCAO : public ClientActiveObject
 180 {
 181 public:
 182         TestCAO(Client *client, ClientEnvironment *env);
 183         virtual ~TestCAO() = default;
 184
 185         ActiveObjectType getType() const
 186         {
 187                 return ACTIVEOBJECT_TYPE_TEST;
 188         }
 189
 190         static ClientActiveObject* create(Client *client, ClientEnvironment *env);
 191
 192         void addToScene(ITextureSource *tsrc);
 193         void removeFromScene(bool permanent);
 194         void updateLight(u32 day_night_ratio);
 195         void updateNodePos();
 196
 197         void step(float dtime, ClientEnvironment *env);
 198
 199         void processMessage(const std::string &data);
 200
 201         bool getCollisionBox(aabb3f *toset) const { return false; }
 202 private:
 203         scene::IMeshSceneNode *m_node;
 204         v3f m_position;
 205 };
 206
 207 // Prototype
 208 TestCAO proto_TestCAO(NULL, NULL);
 209
 210 TestCAO::TestCAO(Client *client, ClientEnvironment *env):
 211         ClientActiveObject(0, client, env),
 212         m_node(NULL),
 213         m_position(v3f(0,10*BS,0))
 214 {
 215         ClientActiveObject::registerType(getType(), create);
 216 }
 217
 218 ClientActiveObject* TestCAO::create(Client *client, ClientEnvironment *env)
 219 {
 220         return new TestCAO(client, env);
 221 }
 222
 223 void TestCAO::addToScene(ITextureSource *tsrc)
 224 {
 225         if(m_node != NULL)
 226                 return;
 227
 228         //video::IVideoDriver* driver = smgr->getVideoDriver();
 229
 230         scene::SMesh *mesh = new scene::SMesh();
 231         scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 232         video::SColor c(255,255,255,255);
 233         video::S3DVertex vertices[4] =
 234         {
 235                 video::S3DVertex(-BS/2,-BS/4,0, 0,0,0, c, 0,1),
 236                 video::S3DVertex(BS/2,-BS/4,0, 0,0,0, c, 1,1),
 237                 video::S3DVertex(BS/2,BS/4,0, 0,0,0, c, 1,0),
 238                 video::S3DVertex(-BS/2,BS/4,0, 0,0,0, c, 0,0),
 239         };
 240         u16 indices[] = {0,1,2,2,3,0};
 241         buf->append(vertices, 4, indices, 6);
 242         // Set material
 243         buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 244         buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
 245         buf->getMaterial().setTexture(0, tsrc->getTextureForMesh("rat.png"));
 246         buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 247         buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 248         buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 249         // Add to mesh
 250         mesh->addMeshBuffer(buf);
 251         buf->drop();
 252         m_node = RenderingEngine::get_scene_manager()->addMeshSceneNode(mesh, NULL);
 253         mesh->drop();
 254         updateNodePos();
 255 }
 256
 257 void TestCAO::removeFromScene(bool permanent)
 258 {
 259         if (!m_node)
 260                 return;
 261
 262         m_node->remove();
 263         m_node = NULL;
 264 }
 265
 266 void TestCAO::updateLight(u32 day_night_ratio)
 267 {
 268 }
 269
 270 void TestCAO::updateNodePos()
 271 {
 272         if (!m_node)
 273                 return;
 274
 275         m_node->setPosition(m_position);
 276         //m_node->setRotation(v3f(0, 45, 0));
 277 }
 278
 279 void TestCAO::step(float dtime, ClientEnvironment *env)
 280 {
 281         if(m_node)
 282         {
 283                 v3f rot = m_node->getRotation();
 284                 //infostream<<"dtime="<<dtime<<", rot.Y="<<rot.Y<<std::endl;
 285                 rot.Y += dtime * 180;
 286                 m_node->setRotation(rot);
 287         }
 288 }
 289
 290 void TestCAO::processMessage(const std::string &data)
 291 {
 292         infostream<<"TestCAO: Got data: "<<data<<std::endl;
 293         std::istringstream is(data, std::ios::binary);
 294         u16 cmd;
 295         is>>cmd;
 296         if(cmd == 0)
 297         {
 298                 v3f newpos;
 299                 is>>newpos.X;
 300                 is>>newpos.Y;
 301                 is>>newpos.Z;
 302                 m_position = newpos;
 303                 updateNodePos();
 304         }
 305 }
 306
 307 /*
 308         GenericCAO
 309 */
 310
 311 #include "clientobject.h"
 312
 313 GenericCAO::GenericCAO(Client *client, ClientEnvironment *env):
 314                 ClientActiveObject(0, client, env)
 315 {
 316         if (client == NULL) {
 317                 ClientActiveObject::registerType(getType(), create);
 318         } else {
 319                 m_client = client;
 320         }
 321 }
 322
 323 bool GenericCAO::getCollisionBox(aabb3f *toset) const
 324 {
 325         if (m_prop.physical)
 326         {
 327                 //update collision box
 328                 toset->MinEdge = m_prop.collisionbox.MinEdge * BS;
 329                 toset->MaxEdge = m_prop.collisionbox.MaxEdge * BS;
 330
 331                 toset->MinEdge += m_position;
 332                 toset->MaxEdge += m_position;
 333
 334                 return true;
 335         }
 336
 337         return false;
 338 }
 339
 340 bool GenericCAO::collideWithObjects() const
 341 {
 342         return m_prop.collideWithObjects;
 343 }
 344
 345 void GenericCAO::initialize(const std::string &data)
 346 {
 347         infostream<<"GenericCAO: Got init data"<<std::endl;
 348         processInitData(data);
 349
 350         if (m_is_player) {
 351                 // Check if it's the current player
 352                 LocalPlayer *player = m_env->getLocalPlayer();
 353                 if (player && strcmp(player->getName(), m_name.c_str()) == 0) {
 354                         m_is_local_player = true;
 355                         m_is_visible = false;
 356                         player->setCAO(this);
 357
 358                         m_prop.show_on_minimap = false;
 359                 }
 360         }
 361
 362         m_enable_shaders = g_settings->getBool("enable_shaders");
 363 }
 364
 365 void GenericCAO::processInitData(const std::string &data)
 366 {
 367         std::istringstream is(data, std::ios::binary);
 368         const u8 version = readU8(is);
 369
 370         if (version < 1) {
 371                 errorstream << "GenericCAO: Unsupported init data version"
 372                                 << std::endl;
 373                 return;
 374         }
 375
 376         // PROTOCOL_VERSION >= 37
 377         m_name = deSerializeString16(is);
 378         m_is_player = readU8(is);
 379         m_id = readU16(is);
 380         m_position = readV3F32(is);
 381         m_rotation = readV3F32(is);
 382         m_hp = readU16(is);
 383
 384         const u8 num_messages = readU8(is);
 385
 386         for (int i = 0; i < num_messages; i++) {
 387                 std::string message = deSerializeString32(is);
 388                 processMessage(message);
 389         }
 390
 391         m_rotation = wrapDegrees_0_360_v3f(m_rotation);
 392         pos_translator.init(m_position);
 393         rot_translator.init(m_rotation);
 394         updateNodePos();
 395 }
 396
 397 GenericCAO::~GenericCAO()
 398 {
 399         removeFromScene(true);
 400 }
 401
 402 bool GenericCAO::getSelectionBox(aabb3f *toset) const
 403 {
 404         if (!m_prop.is_visible || !m_is_visible || m_is_local_player
 405                         || !m_prop.pointable) {
 406                 return false;
 407         }
 408         *toset = m_selection_box;
 409         return true;
 410 }
 411
 412 const v3f GenericCAO::getPosition() const
 413 {
 414         if (!getParent())
 415                 return pos_translator.val_current;
 416
 417         // Calculate real position in world based on MatrixNode
 418         if (m_matrixnode) {
 419                 v3s16 camera_offset = m_env->getCameraOffset();
 420                 return m_matrixnode->getAbsolutePosition() +
 421                                 intToFloat(camera_offset, BS);
 422         }
 423
 424         return m_position;
 425 }
 426
 427 const bool GenericCAO::isImmortal()
 428 {
 429         return itemgroup_get(getGroups(), "immortal");
 430 }
 431
 432 scene::ISceneNode *GenericCAO::getSceneNode() const
 433 {
 434         if (m_meshnode) {
 435                 return m_meshnode;
 436         }
 437
 438         if (m_animated_meshnode) {
 439                 return m_animated_meshnode;
 440         }
 441
 442         if (m_wield_meshnode) {
 443                 return m_wield_meshnode;
 444         }
 445
 446         if (m_spritenode) {
 447                 return m_spritenode;
 448         }
 449         return NULL;
 450 }
 451
 452 scene::IAnimatedMeshSceneNode *GenericCAO::getAnimatedMeshSceneNode() const
 453 {
 454         return m_animated_meshnode;
 455 }
 456
 457 void GenericCAO::setChildrenVisible(bool toset)
 458 {
 459         for (u16 cao_id : m_attachment_child_ids) {
 460                 GenericCAO *obj = m_env->getGenericCAO(cao_id);
 461                 if (obj) {
 462                         // Check if the entity is forced to appear in first person.
 463                         obj->setVisible(obj->isForcedVisible() ? true : toset);
 464                 }
 465         }
 466 }
 467
 468 void GenericCAO::setAttachment(int parent_id, const std::string &bone, v3f position, v3f rotation)
 469 {
 470         int old_parent = m_attachment_parent_id;
 471         m_attachment_parent_id = parent_id;
 472         m_attachment_bone = bone;
 473         m_attachment_position = position;
 474         m_attachment_rotation = rotation;
 475
 476         ClientActiveObject *parent = m_env->getActiveObject(parent_id);
 477
 478         if (parent_id != old_parent) {
 479                 if (auto *o = m_env->getActiveObject(old_parent))
 480                         o->removeAttachmentChild(m_id);
 481                 if (parent)
 482                         parent->addAttachmentChild(m_id);
 483         }
 484         updateAttachments();
 485 }
 486
 487 void GenericCAO::getAttachment(int *parent_id, std::string *bone, v3f *position,
 488         v3f *rotation) const
 489 {
 490         *parent_id = m_attachment_parent_id;
 491         *bone = m_attachment_bone;
 492         *position = m_attachment_position;
 493         *rotation = m_attachment_rotation;
 494 }
 495
 496 void GenericCAO::clearChildAttachments()
 497 {
 498         // Cannot use for-loop here: setAttachment() modifies 'm_attachment_child_ids'!
 499         while (!m_attachment_child_ids.empty()) {
 500                 int child_id = *m_attachment_child_ids.begin();
 501
 502                 if (ClientActiveObject *child = m_env->getActiveObject(child_id))
 503                         child->setAttachment(0, "", v3f(), v3f(), false);
 504
 505                 removeAttachmentChild(child_id);
 506         }
 507 }
 508
 509 void GenericCAO::clearParentAttachment()
 510 {
 511         if (m_attachment_parent_id)
 512                 setAttachment(0, "", m_attachment_position, m_attachment_rotation);
 513         else
 514                 setAttachment(0, "", v3f(), v3f());
 515 }
 516
 517 void GenericCAO::addAttachmentChild(int child_id)
 518 {
 519         m_attachment_child_ids.insert(child_id);
 520 }
 521
 522 void GenericCAO::removeAttachmentChild(int child_id)
 523 {
 524         m_attachment_child_ids.erase(child_id);
 525 }
 526
 527 ClientActiveObject* GenericCAO::getParent() const
 528 {
 529         return m_attachment_parent_id ? m_env->getActiveObject(m_attachment_parent_id) :
 530                         nullptr;
 531 }
 532
 533 void GenericCAO::removeFromScene(bool permanent)
 534 {
 535         // Should be true when removing the object permanently
 536         // and false when refreshing (eg: updating visuals)
 537         if (m_env && permanent) {
 538                 // The client does not know whether this object does re-appear to
 539                 // a later time, thus do not clear child attachments.
 540
 541                 clearParentAttachment();
 542         }
 543
 544         if (m_meshnode) {
 545                 m_meshnode->remove();
 546                 m_meshnode->drop();
 547                 m_meshnode = nullptr;
 548         } else if (m_animated_meshnode) {
 549                 m_animated_meshnode->remove();
 550                 m_animated_meshnode->drop();
 551                 m_animated_meshnode = nullptr;
 552         } else if (m_wield_meshnode) {
 553                 m_wield_meshnode->remove();
 554                 m_wield_meshnode->drop();
 555                 m_wield_meshnode = nullptr;
 556         } else if (m_spritenode) {
 557                 m_spritenode->remove();
 558                 m_spritenode->drop();
 559                 m_spritenode = nullptr;
 560         }
 561
 562         if (m_matrixnode) {
 563                 m_matrixnode->remove();
 564                 m_matrixnode->drop();
 565                 m_matrixnode = nullptr;
 566         }
 567
 568         if (m_nametag) {
 569                 m_client->getCamera()->removeNametag(m_nametag);
 570                 m_nametag = nullptr;
 571         }
 572
 573         if (m_marker && m_client->getMinimap())
 574                 m_client->getMinimap()->removeMarker(&m_marker);
 575 }
 576
 577 void GenericCAO::addToScene(ITextureSource *tsrc)
 578 {
 579         m_smgr = RenderingEngine::get_scene_manager();
 580
 581         if (getSceneNode() != NULL) {
 582                 return;
 583         }
 584
 585         m_visuals_expired = false;
 586
 587         if (!m_prop.is_visible)
 588                 return;
 589
 590         infostream << "GenericCAO::addToScene(): " << m_prop.visual << std::endl;
 591
 592         if (m_enable_shaders) {
 593                 IShaderSource *shader_source = m_client->getShaderSource();
 594                 MaterialType material_type;
 595
 596                 if (m_prop.shaded && m_prop.glow == 0)
 597                         material_type = (m_prop.use_texture_alpha) ?
 598                                 TILE_MATERIAL_ALPHA : TILE_MATERIAL_BASIC;
 599                 else
 600                         material_type = (m_prop.use_texture_alpha) ?
 601                                 TILE_MATERIAL_PLAIN_ALPHA : TILE_MATERIAL_PLAIN;
 602
 603                 u32 shader_id = shader_source->getShader("object_shader", material_type, NDT_NORMAL);
 604                 m_material_type = shader_source->getShaderInfo(shader_id).material;
 605         } else {
 606                 m_material_type = (m_prop.use_texture_alpha) ?
 607                         video::EMT_TRANSPARENT_ALPHA_CHANNEL : video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
 608         }
 609
 610         auto grabMatrixNode = [this] {
 611                 m_matrixnode = RenderingEngine::get_scene_manager()->
 612                                 addDummyTransformationSceneNode();
 613                 m_matrixnode->grab();
 614         };
 615
 616         auto setSceneNodeMaterial = [this] (scene::ISceneNode *node) {
 617                 node->setMaterialFlag(video::EMF_LIGHTING, false);
 618                 node->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
 619                 node->setMaterialFlag(video::EMF_FOG_ENABLE, true);
 620                 node->setMaterialType(m_material_type);
 621
 622                 if (m_enable_shaders) {
 623                         node->setMaterialFlag(video::EMF_GOURAUD_SHADING, false);
 624                         node->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, true);
 625                 }
 626         };
 627
 628         if (m_prop.visual == "sprite") {
 629                 grabMatrixNode();
 630                 m_spritenode = RenderingEngine::get_scene_manager()->addBillboardSceneNode(
 631                                 m_matrixnode, v2f(1, 1), v3f(0,0,0), -1);
 632                 m_spritenode->grab();
 633                 m_spritenode->setMaterialTexture(0,
 634                                 tsrc->getTextureForMesh("unknown_node.png"));
 635
 636                 setSceneNodeMaterial(m_spritenode);
 637
 638                 m_spritenode->setSize(v2f(m_prop.visual_size.X,
 639                                 m_prop.visual_size.Y) * BS);
 640                 {
 641                         const float txs = 1.0 / 1;
 642                         const float tys = 1.0 / 1;
 643                         setBillboardTextureMatrix(m_spritenode,
 644                                         txs, tys, 0, 0);
 645                 }
 646         } else if (m_prop.visual == "upright_sprite") {
 647                 grabMatrixNode();
 648                 scene::SMesh *mesh = new scene::SMesh();
 649                 double dx = BS * m_prop.visual_size.X / 2;
 650                 double dy = BS * m_prop.visual_size.Y / 2;
 651                 video::SColor c(0xFFFFFFFF);
 652
 653                 { // Front
 654                         scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 655                         video::S3DVertex vertices[4] = {
 656                                 video::S3DVertex(-dx, -dy, 0, 0,0,1, c, 1,1),
 657                                 video::S3DVertex( dx, -dy, 0, 0,0,1, c, 0,1),
 658                                 video::S3DVertex( dx,  dy, 0, 0,0,1, c, 0,0),
 659                                 video::S3DVertex(-dx,  dy, 0, 0,0,1, c, 1,0),
 660                         };
 661                         if (m_is_player) {
 662                                 // Move minimal Y position to 0 (feet position)
 663                                 for (video::S3DVertex &vertex : vertices)
 664                                         vertex.Pos.Y += dy;
 665                         }
 666                         u16 indices[] = {0,1,2,2,3,0};
 667                         buf->append(vertices, 4, indices, 6);
 668                         // Set material
 669                         buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 670                         buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 671                         buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 672                         buf->getMaterial().MaterialType = m_material_type;
 673
 674                         if (m_enable_shaders) {
 675                                 buf->getMaterial().EmissiveColor = c;
 676                                 buf->getMaterial().setFlag(video::EMF_GOURAUD_SHADING, false);
 677                                 buf->getMaterial().setFlag(video::EMF_NORMALIZE_NORMALS, true);
 678                         }
 679
 680                         // Add to mesh
 681                         mesh->addMeshBuffer(buf);
 682                         buf->drop();
 683                 }
 684                 { // Back
 685                         scene::IMeshBuffer *buf = new scene::SMeshBuffer();
 686                         video::S3DVertex vertices[4] = {
 687                                 video::S3DVertex( dx,-dy, 0, 0,0,-1, c, 1,1),
 688                                 video::S3DVertex(-dx,-dy, 0, 0,0,-1, c, 0,1),
 689                                 video::S3DVertex(-dx, dy, 0, 0,0,-1, c, 0,0),
 690                                 video::S3DVertex( dx, dy, 0, 0,0,-1, c, 1,0),
 691                         };
 692                         if (m_is_player) {
 693                                 // Move minimal Y position to 0 (feet position)
 694                                 for (video::S3DVertex &vertex : vertices)
 695                                         vertex.Pos.Y += dy;
 696                         }
 697                         u16 indices[] = {0,1,2,2,3,0};
 698                         buf->append(vertices, 4, indices, 6);
 699                         // Set material
 700                         buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
 701                         buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
 702                         buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
 703                         buf->getMaterial().MaterialType = m_material_type;
 704
 705                         if (m_enable_shaders) {
 706                                 buf->getMaterial().EmissiveColor = c;
 707                                 buf->getMaterial().setFlag(video::EMF_GOURAUD_SHADING, false);
 708                                 buf->getMaterial().setFlag(video::EMF_NORMALIZE_NORMALS, true);
 709                         }
 710
 711                         // Add to mesh
 712                         mesh->addMeshBuffer(buf);
 713                         buf->drop();
 714                 }
 715                 m_meshnode = RenderingEngine::get_scene_manager()->
 716                         addMeshSceneNode(mesh, m_matrixnode);
 717                 m_meshnode->grab();
 718                 mesh->drop();
 719                 // Set it to use the materials of the meshbuffers directly.
 720                 // This is needed for changing the texture in the future
 721                 m_meshnode->setReadOnlyMaterials(true);
 722         } else if (m_prop.visual == "cube") {
 723                 grabMatrixNode();
 724                 scene::IMesh *mesh = createCubeMesh(v3f(BS,BS,BS));
 725                 m_meshnode = RenderingEngine::get_scene_manager()->
 726                         addMeshSceneNode(mesh, m_matrixnode);
 727                 m_meshnode->grab();
 728                 mesh->drop();
 729
 730                 m_meshnode->setScale(m_prop.visual_size);
 731                 m_meshnode->setMaterialFlag(video::EMF_BACK_FACE_CULLING,
 732                         m_prop.backface_culling);
 733
 734                 setSceneNodeMaterial(m_meshnode);
 735         } else if (m_prop.visual == "mesh") {
 736                 grabMatrixNode();
 737                 scene::IAnimatedMesh *mesh = m_client->getMesh(m_prop.mesh, true);
 738                 if (mesh) {
 739                         m_animated_meshnode = RenderingEngine::get_scene_manager()->
 740                                 addAnimatedMeshSceneNode(mesh, m_matrixnode);
 741                         m_animated_meshnode->grab();
 742                         mesh->drop(); // The scene node took hold of it
 743
 744                         if (!checkMeshNormals(mesh)) {
 745                                 infostream << "GenericCAO: recalculating normals for mesh "
 746                                         << m_prop.mesh << std::endl;
 747                                 m_smgr->getMeshManipulator()->
 748                                                 recalculateNormals(mesh, true, false);
 749                         }
 750
 751                         m_animated_meshnode->animateJoints(); // Needed for some animations
 752                         m_animated_meshnode->setScale(m_prop.visual_size);
 753
 754                         // set vertex colors to ensure alpha is set
 755                         setMeshColor(m_animated_meshnode->getMesh(), video::SColor(0xFFFFFFFF));
 756
 757                         setAnimatedMeshColor(m_animated_meshnode, video::SColor(0xFFFFFFFF));
 758
 759                         setSceneNodeMaterial(m_animated_meshnode);
 760
 761                         m_animated_meshnode->setMaterialFlag(video::EMF_BACK_FACE_CULLING,
 762                                 m_prop.backface_culling);
 763                 } else
 764                         errorstream<<"GenericCAO::addToScene(): Could not load mesh "<<m_prop.mesh<<std::endl;
 765         } else if (m_prop.visual == "wielditem" || m_prop.visual == "item") {
 766                 grabMatrixNode();
 767                 ItemStack item;
 768                 if (m_prop.wield_item.empty()) {
 769                         // Old format, only textures are specified.
 770                         infostream << "textures: " << m_prop.textures.size() << std::endl;
 771                         if (!m_prop.textures.empty()) {
 772                                 infostream << "textures[0]: " << m_prop.textures[0]
 773                                         << std::endl;
 774                                 IItemDefManager *idef = m_client->idef();
 775                                 item = ItemStack(m_prop.textures[0], 1, 0, idef);
 776                         }
 777                 } else {
 778                         infostream << "serialized form: " << m_prop.wield_item << std::endl;
 779                         item.deSerialize(m_prop.wield_item, m_client->idef());
 780                 }
 781                 m_wield_meshnode = new WieldMeshSceneNode(
 782                         RenderingEngine::get_scene_manager(), -1);
 783                 m_wield_meshnode->setItem(item, m_client,
 784                         (m_prop.visual == "wielditem"));
 785
 786                 m_wield_meshnode->setScale(m_prop.visual_size / 2.0f);
 787                 m_wield_meshnode->setColor(video::SColor(0xFFFFFFFF));
 788         } else {
 789                 infostream<<"GenericCAO::addToScene(): \""<<m_prop.visual
 790                                 <<"\" not supported"<<std::endl;
 791         }
 792
 793         /* don't update while punch texture modifier is active */
 794         if (m_reset_textures_timer < 0)
 795                 updateTextures(m_current_texture_modifier);
 796
 797         scene::ISceneNode *node = getSceneNode();
 798
 799         if (node && m_matrixnode)
 800                 node->setParent(m_matrixnode);
 801
 802         updateNametag();
 803         updateMarker();
 804         updateNodePos();
 805         updateAnimation();
 806         updateBonePosition();
 807         updateAttachments();
 808         setNodeLight(m_last_light);
 809         updateMeshCulling();
 810 }
 811
 812 void GenericCAO::updateLight(u32 day_night_ratio)
 813 {
 814         if (m_glow < 0)
 815                 return;
 816
 817         u8 light_at_pos = 0;
 818         bool pos_ok = false;
 819
 820         v3s16 pos[3];
 821         u16 npos = getLightPosition(pos);
 822         for (u16 i = 0; i < npos; i++) {
 823                 bool this_ok;
 824                 MapNode n = m_env->getMap().getNode(pos[i], &this_ok);
 825                 if (this_ok) {
 826                         u8 this_light = n.getLightBlend(day_night_ratio, m_client->ndef());
 827                         light_at_pos = MYMAX(light_at_pos, this_light);
 828                         pos_ok = true;
 829                 }
 830         }
 831         if (!pos_ok)
 832                 light_at_pos = blend_light(day_night_ratio, LIGHT_SUN, 0);
 833
 834         u8 light = decode_light(light_at_pos + m_glow);
 835         if (light != m_last_light) {
 836                 m_last_light = light;
 837                 setNodeLight(light);
 838         }
 839 }
 840
 841 void GenericCAO::setNodeLight(u8 light)
 842 {
 843         video::SColor color(255, light, light, light);
 844
 845         if (m_prop.visual == "wielditem" || m_prop.visual == "item") {
 846                 if (m_wield_meshnode)
 847                         m_wield_meshnode->setNodeLightColor(color);
 848                 return;
 849         }
 850
 851         if (m_enable_shaders) {
 852                 if (m_prop.visual == "upright_sprite") {
 853                         if (!m_meshnode)
 854                                 return;
 855
 856                         scene::IMesh *mesh = m_meshnode->getMesh();
 857                         for (u32 i = 0; i < mesh->getMeshBufferCount(); ++i) {
 858                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 859                                 buf->getMaterial().EmissiveColor = color;
 860                         }
 861                 } else {
 862                         scene::ISceneNode *node = getSceneNode();
 863                         if (!node)
 864                                 return;
 865
 866                         for (u32 i = 0; i < node->getMaterialCount(); ++i) {
 867                                 video::SMaterial &material = node->getMaterial(i);
 868                                 material.EmissiveColor = color;
 869                         }
 870                 }
 871         } else {
 872                 if (m_meshnode) {
 873                         setMeshColor(m_meshnode->getMesh(), color);
 874                 } else if (m_animated_meshnode) {
 875                         setAnimatedMeshColor(m_animated_meshnode, color);
 876                 } else if (m_spritenode) {
 877                         m_spritenode->setColor(color);
 878                 }
 879         }
 880 }
 881
 882 u16 GenericCAO::getLightPosition(v3s16 *pos)
 883 {
 884         const auto &box = m_prop.collisionbox;
 885         pos[0] = floatToInt(m_position + box.MinEdge * BS, BS);
 886         pos[1] = floatToInt(m_position + box.MaxEdge * BS, BS);
 887
 888         // Skip center pos if it falls into the same node as Min or MaxEdge
 889         if ((box.MaxEdge - box.MinEdge).getLengthSQ() < 3.0f)
 890                 return 2;
 891         pos[2] = floatToInt(m_position + box.getCenter() * BS, BS);
 892         return 3;
 893 }
 894
 895 void GenericCAO::updateMarker()
 896 {
 897         if (!m_prop.show_on_minimap) {
 898                 if (m_marker)
 899                         m_client->getMinimap()->removeMarker(&m_marker);
 900                 return;
 901         }
 902
 903         if (m_marker)
 904                 return;
 905
 906         scene::ISceneNode *node = getSceneNode();
 907         if (!node)
 908                 return;
 909         m_marker = m_client->getMinimap()->addMarker(node);
 910 }
 911
 912 void GenericCAO::updateNametag()
 913 {
 914         if (m_is_local_player) // No nametag for local player
 915                 return;
 916
 917         if (m_prop.nametag.empty()) {
 918                 // Delete nametag
 919                 if (m_nametag) {
 920                         m_client->getCamera()->removeNametag(m_nametag);
 921                         m_nametag = nullptr;
 922                 }
 923                 return;
 924         }
 925
 926         scene::ISceneNode *node = getSceneNode();
 927         if (!node)
 928                 return;
 929
 930         v3f pos;
 931         pos.Y = m_prop.selectionbox.MaxEdge.Y + 0.3f;
 932         if (!m_nametag) {
 933                 // Add nametag
 934                 m_nametag = m_client->getCamera()->addNametag(node,
 935                         m_prop.nametag, m_prop.nametag_color, pos);
 936         } else {
 937                 // Update nametag
 938                 m_nametag->nametag_text = m_prop.nametag;
 939                 m_nametag->nametag_color = m_prop.nametag_color;
 940                 m_nametag->nametag_pos = pos;
 941         }
 942 }
 943
 944 void GenericCAO::updateNodePos()
 945 {
 946         if (getParent() != NULL)
 947                 return;
 948
 949         scene::ISceneNode *node = getSceneNode();
 950
 951         if (node) {
 952                 v3s16 camera_offset = m_env->getCameraOffset();
 953                 v3f pos = pos_translator.val_current -
 954                                 intToFloat(camera_offset, BS);
 955                 getPosRotMatrix().setTranslation(pos);
 956                 if (node != m_spritenode) { // rotate if not a sprite
 957                         v3f rot = m_is_local_player ? -m_rotation : -rot_translator.val_current;
 958                         setPitchYawRoll(getPosRotMatrix(), rot);
 959                 }
 960         }
 961 }
 962
 963 void GenericCAO::step(float dtime, ClientEnvironment *env)
 964 {
 965         // Handle model animations and update positions instantly to prevent lags
 966         if (m_is_local_player) {
 967                 LocalPlayer *player = m_env->getLocalPlayer();
 968                 m_position = player->getPosition();
 969                 pos_translator.val_current = m_position;
 970                 m_rotation.Y = wrapDegrees_0_360(player->getYaw());
 971                 rot_translator.val_current = m_rotation;
 972
 973                 if (m_is_visible) {
 974                         int old_anim = player->last_animation;
 975                         float old_anim_speed = player->last_animation_speed;
 976                         m_velocity = v3f(0,0,0);
 977                         m_acceleration = v3f(0,0,0);
 978                         const PlayerControl &controls = player->getPlayerControl();
 979
 980                         bool walking = false;
 981                         if (controls.up || controls.down || controls.left || controls.right ||
 982                                         controls.forw_move_joystick_axis != 0.f ||
 983                                         controls.sidew_move_joystick_axis != 0.f)
 984                                 walking = true;
 985
 986                         f32 new_speed = player->local_animation_speed;
 987                         v2s32 new_anim = v2s32(0,0);
 988                         bool allow_update = false;
 989
 990                         // increase speed if using fast or flying fast
 991                         if((g_settings->getBool("fast_move") &&
 992                                         m_client->checkLocalPrivilege("fast")) &&
 993                                         (controls.aux1 ||
 994                                         (!player->touching_ground &&
 995                                         g_settings->getBool("free_move") &&
 996                                         m_client->checkLocalPrivilege("fly"))))
 997                                         new_speed *= 1.5;
 998                         // slowdown speed if sneeking
 999                         if (controls.sneak && walking)
1000                                 new_speed /= 2;
1001
1002                         if (walking && (controls.dig || controls.place)) {
1003                                 new_anim = player->local_animations[3];
1004                                 player->last_animation = WD_ANIM;
1005                         } else if (walking) {
1006                                 new_anim = player->local_animations[1];
1007                                 player->last_animation = WALK_ANIM;
1008                         } else if (controls.dig || controls.place) {
1009                                 new_anim = player->local_animations[2];
1010                                 player->last_animation = DIG_ANIM;
1011                         }
1012
1013                         // Apply animations if input detected and not attached
1014                         // or set idle animation
1015                         if ((new_anim.X + new_anim.Y) > 0 && !getParent()) {
1016                                 allow_update = true;
1017                                 m_animation_range = new_anim;
1018                                 m_animation_speed = new_speed;
1019                                 player->last_animation_speed = m_animation_speed;
1020                         } else {
1021                                 player->last_animation = NO_ANIM;
1022
1023                                 if (old_anim != NO_ANIM) {
1024                                         m_animation_range = player->local_animations[0];
1025                                         updateAnimation();
1026                                 }
1027                         }
1028
1029                         // Update local player animations
1030                         if ((player->last_animation != old_anim ||
1031                                         m_animation_speed != old_anim_speed) &&
1032                                         player->last_animation != NO_ANIM && allow_update)
1033                                 updateAnimation();
1034
1035                 }
1036         }
1037
1038         if (m_visuals_expired && m_smgr) {
1039                 m_visuals_expired = false;
1040
1041                 // Attachments, part 1: All attached objects must be unparented first,
1042                 // or Irrlicht causes a segmentation fault
1043                 for (u16 cao_id : m_attachment_child_ids) {
1044                         ClientActiveObject *obj = m_env->getActiveObject(cao_id);
1045                         if (obj) {
1046                                 scene::ISceneNode *child_node = obj->getSceneNode();
1047                                 // The node's parent is always an IDummyTraformationSceneNode,
1048                                 // so we need to reparent that one instead.
1049                                 if (child_node)
1050                                         child_node->getParent()->setParent(m_smgr->getRootSceneNode());
1051                         }
1052                 }
1053
1054                 removeFromScene(false);
1055                 addToScene(m_client->tsrc());
1056
1057                 // Attachments, part 2: Now that the parent has been refreshed, put its attachments back
1058                 for (u16 cao_id : m_attachment_child_ids) {
1059                         ClientActiveObject *obj = m_env->getActiveObject(cao_id);
1060                         if (obj)
1061                                 obj->updateAttachments();
1062                 }
1063         }
1064
1065         // Make sure m_is_visible is always applied
1066         scene::ISceneNode *node = getSceneNode();
1067         if (node)
1068                 node->setVisible(m_is_visible);
1069
1070         if(getParent() != NULL) // Attachments should be glued to their parent by Irrlicht
1071         {
1072                 // Set these for later
1073                 m_position = getPosition();
1074                 m_velocity = v3f(0,0,0);
1075                 m_acceleration = v3f(0,0,0);
1076                 pos_translator.val_current = m_position;
1077                 pos_translator.val_target = m_position;
1078         } else {
1079                 rot_translator.translate(dtime);
1080                 v3f lastpos = pos_translator.val_current;
1081
1082                 if(m_prop.physical)
1083                 {
1084                         aabb3f box = m_prop.collisionbox;
1085                         box.MinEdge *= BS;
1086                         box.MaxEdge *= BS;
1087                         collisionMoveResult moveresult;
1088                         f32 pos_max_d = BS*0.125; // Distance per iteration
1089                         v3f p_pos = m_position;
1090                         v3f p_velocity = m_velocity;
1091                         moveresult = collisionMoveSimple(env,env->getGameDef(),
1092                                         pos_max_d, box, m_prop.stepheight, dtime,
1093                                         &p_pos, &p_velocity, m_acceleration,
1094                                         this, m_prop.collideWithObjects);
1095                         // Apply results
1096                         m_position = p_pos;
1097                         m_velocity = p_velocity;
1098
1099                         bool is_end_position = moveresult.collides;
1100                         pos_translator.update(m_position, is_end_position, dtime);
1101                 } else {
1102                         m_position += dtime * m_velocity + 0.5 * dtime * dtime * m_acceleration;
1103                         m_velocity += dtime * m_acceleration;
1104                         pos_translator.update(m_position, pos_translator.aim_is_end,
1105                                         pos_translator.anim_time);
1106                 }
1107                 pos_translator.translate(dtime);
1108                 updateNodePos();
1109
1110                 float moved = lastpos.getDistanceFrom(pos_translator.val_current);
1111                 m_step_distance_counter += moved;
1112                 if (m_step_distance_counter > 1.5f * BS) {
1113                         m_step_distance_counter = 0.0f;
1114                         if (!m_is_local_player && m_prop.makes_footstep_sound) {
1115                                 const NodeDefManager *ndef = m_client->ndef();
1116                                 v3s16 p = floatToInt(getPosition() +
1117                                         v3f(0.0f, (m_prop.collisionbox.MinEdge.Y - 0.5f) * BS, 0.0f), BS);
1118                                 MapNode n = m_env->getMap().getNode(p);
1119                                 SimpleSoundSpec spec = ndef->get(n).sound_footstep;
1120                                 // Reduce footstep gain, as non-local-player footsteps are
1121                                 // somehow louder.
1122                                 spec.gain *= 0.6f;
1123                                 m_client->sound()->playSoundAt(spec, false, getPosition());
1124                         }
1125                 }
1126         }
1127
1128         m_anim_timer += dtime;
1129         if(m_anim_timer >= m_anim_framelength)
1130         {
1131                 m_anim_timer -= m_anim_framelength;
1132                 m_anim_frame++;
1133                 if(m_anim_frame >= m_anim_num_frames)
1134                         m_anim_frame = 0;
1135         }
1136
1137         updateTexturePos();
1138
1139         if(m_reset_textures_timer >= 0)
1140         {
1141                 m_reset_textures_timer -= dtime;
1142                 if(m_reset_textures_timer <= 0) {
1143                         m_reset_textures_timer = -1;
1144                         updateTextures(m_previous_texture_modifier);
1145                 }
1146         }
1147
1148         if (!getParent() && std::fabs(m_prop.automatic_rotate) > 0.001) {
1149                 // This is the child node's rotation. It is only used for automatic_rotate.
1150                 v3f local_rot = node->getRotation();
1151                 local_rot.Y = modulo360f(local_rot.Y - dtime * core::RADTODEG *
1152                                 m_prop.automatic_rotate);
1153                 node->setRotation(local_rot);
1154         }
1155
1156         if (!getParent() && m_prop.automatic_face_movement_dir &&
1157                         (fabs(m_velocity.Z) > 0.001 || fabs(m_velocity.X) > 0.001)) {
1158                 float target_yaw = atan2(m_velocity.Z, m_velocity.X) * 180 / M_PI
1159                                 + m_prop.automatic_face_movement_dir_offset;
1160                 float max_rotation_per_sec =
1161                                 m_prop.automatic_face_movement_max_rotation_per_sec;
1162
1163                 if (max_rotation_per_sec > 0) {
1164                         wrappedApproachShortest(m_rotation.Y, target_yaw,
1165                                 dtime * max_rotation_per_sec, 360.f);
1166                 } else {
1167                         // Negative values of max_rotation_per_sec mean disabled.
1168                         m_rotation.Y = target_yaw;
1169                 }
1170
1171                 rot_translator.val_current = m_rotation;
1172                 updateNodePos();
1173         }
1174
1175         if (m_animated_meshnode) {
1176                 // Everything must be updated; the whole transform
1177                 // chain as well as the animated mesh node.
1178                 // Otherwise, bone attachments would be relative to
1179                 // a position that's one frame old.
1180                 if (m_matrixnode)
1181                         updatePositionRecursive(m_matrixnode);
1182                 m_animated_meshnode->updateAbsolutePosition();
1183                 m_animated_meshnode->animateJoints();
1184                 updateBonePosition();
1185         }
1186 }
1187
1188 void GenericCAO::updateTexturePos()
1189 {
1190         if(m_spritenode)
1191         {
1192                 scene::ICameraSceneNode* camera =
1193                                 m_spritenode->getSceneManager()->getActiveCamera();
1194                 if(!camera)
1195                         return;
1196                 v3f cam_to_entity = m_spritenode->getAbsolutePosition()
1197                                 - camera->getAbsolutePosition();
1198                 cam_to_entity.normalize();
1199
1200                 int row = m_tx_basepos.Y;
1201                 int col = m_tx_basepos.X;
1202
1203                 // Yawpitch goes rightwards
1204                 if (m_tx_select_horiz_by_yawpitch) {
1205                         if (cam_to_entity.Y > 0.75)
1206                                 col += 5;
1207                         else if (cam_to_entity.Y < -0.75)
1208                                 col += 4;
1209                         else {
1210                                 float mob_dir =
1211                                                 atan2(cam_to_entity.Z, cam_to_entity.X) / M_PI * 180.;
1212                                 float dir = mob_dir - m_rotation.Y;
1213                                 dir = wrapDegrees_180(dir);
1214                                 if (std::fabs(wrapDegrees_180(dir - 0)) <= 45.1f)
1215                                         col += 2;
1216                                 else if(std::fabs(wrapDegrees_180(dir - 90)) <= 45.1f)
1217                                         col += 3;
1218                                 else if(std::fabs(wrapDegrees_180(dir - 180)) <= 45.1f)
1219                                         col += 0;
1220                                 else if(std::fabs(wrapDegrees_180(dir + 90)) <= 45.1f)
1221                                         col += 1;
1222                                 else
1223                                         col += 4;
1224                         }
1225                 }
1226
1227                 // Animation goes downwards
1228                 row += m_anim_frame;
1229
1230                 float txs = m_tx_size.X;
1231                 float tys = m_tx_size.Y;
1232                 setBillboardTextureMatrix(m_spritenode, txs, tys, col, row);
1233         }
1234
1235         else if (m_meshnode) {
1236                 if (m_prop.visual == "upright_sprite") {
1237                         int row = m_tx_basepos.Y;
1238                         int col = m_tx_basepos.X;
1239
1240                         // Animation goes downwards
1241                         row += m_anim_frame;
1242
1243                         const auto &tx = m_tx_size;
1244                         v2f t[4] = { // cf. vertices in GenericCAO::addToScene()
1245                                 tx * v2f(col+1, row+1),
1246                                 tx * v2f(col, row+1),
1247                                 tx * v2f(col, row),
1248                                 tx * v2f(col+1, row),
1249                         };
1250                         auto mesh = m_meshnode->getMesh();
1251                         setMeshBufferTextureCoords(mesh->getMeshBuffer(0), t, 4);
1252                         setMeshBufferTextureCoords(mesh->getMeshBuffer(1), t, 4);
1253                 }
1254         }
1255 }
1256
1257 // Do not pass by reference, see header.
1258 void GenericCAO::updateTextures(std::string mod)
1259 {
1260         ITextureSource *tsrc = m_client->tsrc();
1261
1262         bool use_trilinear_filter = g_settings->getBool("trilinear_filter");
1263         bool use_bilinear_filter = g_settings->getBool("bilinear_filter");
1264         bool use_anisotropic_filter = g_settings->getBool("anisotropic_filter");
1265
1266         m_previous_texture_modifier = m_current_texture_modifier;
1267         m_current_texture_modifier = mod;
1268         m_glow = m_prop.glow;
1269
1270         if (m_spritenode) {
1271                 if (m_prop.visual == "sprite") {
1272                         std::string texturestring = "unknown_node.png";
1273                         if (!m_prop.textures.empty())
1274                                 texturestring = m_prop.textures[0];
1275                         texturestring += mod;
1276                         m_spritenode->getMaterial(0).MaterialType = m_material_type;
1277                         m_spritenode->getMaterial(0).MaterialTypeParam = 0.5f;
1278                         m_spritenode->setMaterialTexture(0,
1279                                         tsrc->getTextureForMesh(texturestring));
1280
1281                         // This allows setting per-material colors. However, until a real lighting
1282                         // system is added, the code below will have no effect. Once MineTest
1283                         // has directional lighting, it should work automatically.
1284                         if (!m_prop.colors.empty()) {
1285                                 m_spritenode->getMaterial(0).AmbientColor = m_prop.colors[0];
1286                                 m_spritenode->getMaterial(0).DiffuseColor = m_prop.colors[0];
1287                                 m_spritenode->getMaterial(0).SpecularColor = m_prop.colors[0];
1288                         }
1289
1290                         m_spritenode->getMaterial(0).setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
1291                         m_spritenode->getMaterial(0).setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
1292                         m_spritenode->getMaterial(0).setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
1293                 }
1294         }
1295
1296         else if (m_animated_meshnode) {
1297                 if (m_prop.visual == "mesh") {
1298                         for (u32 i = 0; i < m_prop.textures.size() &&
1299                                         i < m_animated_meshnode->getMaterialCount(); ++i) {
1300                                 std::string texturestring = m_prop.textures[i];
1301                                 if (texturestring.empty())
1302                                         continue; // Empty texture string means don't modify that material
1303                                 texturestring += mod;
1304                                 video::ITexture* texture = tsrc->getTextureForMesh(texturestring);
1305                                 if (!texture) {
1306                                         errorstream<<"GenericCAO::updateTextures(): Could not load texture "<<texturestring<<std::endl;
1307                                         continue;
1308                                 }
1309
1310                                 // Set material flags and texture
1311                                 video::SMaterial& material = m_animated_meshnode->getMaterial(i);
1312                                 material.MaterialType = m_material_type;
1313                                 material.MaterialTypeParam = 0.5f;
1314                                 material.TextureLayer[0].Texture = texture;
1315                                 material.setFlag(video::EMF_LIGHTING, true);
1316                                 material.setFlag(video::EMF_BILINEAR_FILTER, false);
1317                                 material.setFlag(video::EMF_BACK_FACE_CULLING, m_prop.backface_culling);
1318
1319                                 // don't filter low-res textures, makes them look blurry
1320                                 // player models have a res of 64
1321                                 const core::dimension2d<u32> &size = texture->getOriginalSize();
1322                                 const u32 res = std::min(size.Height, size.Width);
1323                                 use_trilinear_filter &= res > 64;
1324                                 use_bilinear_filter &= res > 64;
1325
1326                                 m_animated_meshnode->getMaterial(i)
1327                                                 .setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
1328                                 m_animated_meshnode->getMaterial(i)
1329                                                 .setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
1330                                 m_animated_meshnode->getMaterial(i)
1331                                                 .setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
1332                         }
1333                         for (u32 i = 0; i < m_prop.colors.size() &&
1334                         i < m_animated_meshnode->getMaterialCount(); ++i)
1335                         {
1336                                 // This allows setting per-material colors. However, until a real lighting
1337                                 // system is added, the code below will have no effect. Once MineTest
1338                                 // has directional lighting, it should work automatically.
1339                                 m_animated_meshnode->getMaterial(i).AmbientColor = m_prop.colors[i];
1340                                 m_animated_meshnode->getMaterial(i).DiffuseColor = m_prop.colors[i];
1341                                 m_animated_meshnode->getMaterial(i).SpecularColor = m_prop.colors[i];
1342                         }
1343                 }
1344         }
1345
1346         else if (m_meshnode) {
1347                 if(m_prop.visual == "cube")
1348                 {
1349                         for (u32 i = 0; i < 6; ++i)
1350                         {
1351                                 std::string texturestring = "unknown_node.png";
1352                                 if(m_prop.textures.size() > i)
1353                                         texturestring = m_prop.textures[i];
1354                                 texturestring += mod;
1355
1356
1357                                 // Set material flags and texture
1358                                 video::SMaterial& material = m_meshnode->getMaterial(i);
1359                                 material.MaterialType = m_material_type;
1360                                 material.MaterialTypeParam = 0.5f;
1361                                 material.setFlag(video::EMF_LIGHTING, false);
1362                                 material.setFlag(video::EMF_BILINEAR_FILTER, false);
1363                                 material.setTexture(0,
1364                                                 tsrc->getTextureForMesh(texturestring));
1365                                 material.getTextureMatrix(0).makeIdentity();
1366
1367                                 // This allows setting per-material colors. However, until a real lighting
1368                                 // system is added, the code below will have no effect. Once MineTest
1369                                 // has directional lighting, it should work automatically.
1370                                 if(m_prop.colors.size() > i)
1371                                 {
1372                                         m_meshnode->getMaterial(i).AmbientColor = m_prop.colors[i];
1373                                         m_meshnode->getMaterial(i).DiffuseColor = m_prop.colors[i];
1374                                         m_meshnode->getMaterial(i).SpecularColor = m_prop.colors[i];
1375                                 }
1376
1377                                 m_meshnode->getMaterial(i).setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
1378                                 m_meshnode->getMaterial(i).setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
1379                                 m_meshnode->getMaterial(i).setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
1380                         }
1381                 } else if (m_prop.visual == "upright_sprite") {
1382                         scene::IMesh *mesh = m_meshnode->getMesh();
1383                         {
1384                                 std::string tname = "unknown_object.png";
1385                                 if (!m_prop.textures.empty())
1386                                         tname = m_prop.textures[0];
1387                                 tname += mod;
1388                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(0);
1389                                 buf->getMaterial().setTexture(0,
1390                                                 tsrc->getTextureForMesh(tname));
1391
1392                                 // This allows setting per-material colors. However, until a real lighting
1393                                 // system is added, the code below will have no effect. Once MineTest
1394                                 // has directional lighting, it should work automatically.
1395                                 if(!m_prop.colors.empty()) {
1396                                         buf->getMaterial().AmbientColor = m_prop.colors[0];
1397                                         buf->getMaterial().DiffuseColor = m_prop.colors[0];
1398                                         buf->getMaterial().SpecularColor = m_prop.colors[0];
1399                                 }
1400
1401                                 buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
1402                                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
1403                                 buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
1404                         }
1405                         {
1406                                 std::string tname = "unknown_object.png";
1407                                 if (m_prop.textures.size() >= 2)
1408                                         tname = m_prop.textures[1];
1409                                 else if (!m_prop.textures.empty())
1410                                         tname = m_prop.textures[0];
1411                                 tname += mod;
1412                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(1);
1413                                 buf->getMaterial().setTexture(0,
1414                                                 tsrc->getTextureForMesh(tname));
1415
1416                                 // This allows setting per-material colors. However, until a real lighting
1417                                 // system is added, the code below will have no effect. Once MineTest
1418                                 // has directional lighting, it should work automatically.
1419                                 if (m_prop.colors.size() >= 2) {
1420                                         buf->getMaterial().AmbientColor = m_prop.colors[1];
1421                                         buf->getMaterial().DiffuseColor = m_prop.colors[1];
1422                                         buf->getMaterial().SpecularColor = m_prop.colors[1];
1423                                 } else if (!m_prop.colors.empty()) {
1424                                         buf->getMaterial().AmbientColor = m_prop.colors[0];
1425                                         buf->getMaterial().DiffuseColor = m_prop.colors[0];
1426                                         buf->getMaterial().SpecularColor = m_prop.colors[0];
1427                                 }
1428
1429                                 buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
1430                                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
1431                                 buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
1432                         }
1433                         // Set mesh color (only if lighting is disabled)
1434                         if (!m_prop.colors.empty() && m_glow < 0)
1435                                 setMeshColor(mesh, m_prop.colors[0]);
1436                 }
1437         }
1438         // Prevent showing the player after changing texture
1439         if (m_is_local_player)
1440                 updateMeshCulling();
1441 }
1442
1443 void GenericCAO::updateAnimation()
1444 {
1445         if (!m_animated_meshnode)
1446                 return;
1447
1448         if (m_animated_meshnode->getStartFrame() != m_animation_range.X ||
1449                 m_animated_meshnode->getEndFrame() != m_animation_range.Y)
1450                         m_animated_meshnode->setFrameLoop(m_animation_range.X, m_animation_range.Y);
1451         if (m_animated_meshnode->getAnimationSpeed() != m_animation_speed)
1452                 m_animated_meshnode->setAnimationSpeed(m_animation_speed);
1453         m_animated_meshnode->setTransitionTime(m_animation_blend);
1454 // Requires Irrlicht 1.8 or greater
1455 #if (IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR >= 8) || IRRLICHT_VERSION_MAJOR > 1
1456         if (m_animated_meshnode->getLoopMode() != m_animation_loop)
1457                 m_animated_meshnode->setLoopMode(m_animation_loop);
1458 #endif
1459 }
1460
1461 void GenericCAO::updateAnimationSpeed()
1462 {
1463         if (!m_animated_meshnode)
1464                 return;
1465
1466         m_animated_meshnode->setAnimationSpeed(m_animation_speed);
1467 }
1468
1469 void GenericCAO::updateBonePosition()
1470 {
1471         if (m_bone_position.empty() || !m_animated_meshnode)
1472                 return;
1473
1474         m_animated_meshnode->setJointMode(irr::scene::EJUOR_CONTROL); // To write positions to the mesh on render
1475         for (auto &it : m_bone_position) {
1476                 std::string bone_name = it.first;
1477                 irr::scene::IBoneSceneNode* bone = m_animated_meshnode->getJointNode(bone_name.c_str());
1478                 if (bone) {
1479                         bone->setPosition(it.second.X);
1480                         bone->setRotation(it.second.Y);
1481                 }
1482         }
1483
1484         // search through bones to find mistakenly rotated bones due to bug in Irrlicht
1485         for (u32 i = 0; i < m_animated_meshnode->getJointCount(); ++i) {
1486                 irr::scene::IBoneSceneNode *bone = m_animated_meshnode->getJointNode(i);
1487                 if (!bone)
1488                         continue;
1489
1490                 // Workaround for Irrlicht bug
1491                 // We check each bone to see if it has been rotated ~180deg from its expected position due to a bug in Irricht
1492                 // when using EJUOR_CONTROL joint control. If the bug is detected we update the bone to the proper position
1493                 // and update the bones transformation.
1494                 v3f bone_rot = bone->getRelativeTransformation().getRotationDegrees();
1495                 float offset_X = fabsf(bone_rot.X - bone->getRotation().X);
1496                 float offset_Y = fabsf(bone_rot.Y - bone->getRotation().Y);
1497                 float offset_Z = fabsf(bone_rot.Z - bone->getRotation().Z);
1498                 if ((offset_X > 179.9f && offset_X < 180.1f)
1499                                 || (offset_Y > 179.9f && offset_Y < 180.1f)
1500                                 || (offset_Z > 179.9f && offset_Z < 180.1f)) {
1501                         bone->setRotation(bone_rot);
1502                         bone->updateAbsolutePosition();
1503                 }
1504         }
1505         // The following is needed for set_bone_pos to propagate to
1506         // attached objects correctly.
1507         // Irrlicht ought to do this, but doesn't when using EJUOR_CONTROL.
1508         for (u32 i = 0; i < m_animated_meshnode->getJointCount(); ++i) {
1509                 auto bone = m_animated_meshnode->getJointNode(i);
1510                 // Look for the root bone.
1511                 if (bone && bone->getParent() == m_animated_meshnode) {
1512                         // Update entire skeleton.
1513                         bone->updateAbsolutePositionOfAllChildren();
1514                         break;
1515                 }
1516         }
1517 }
1518
1519 void GenericCAO::updateAttachments()
1520 {
1521         ClientActiveObject *parent = getParent();
1522
1523         m_attached_to_local = parent && parent->isLocalPlayer();
1524
1525         /*
1526         Following cases exist:
1527                 m_attachment_parent_id == 0 && !parent
1528                         This object is not attached
1529                 m_attachment_parent_id != 0 && parent
1530                         This object is attached
1531                 m_attachment_parent_id != 0 && !parent
1532                         This object will be attached as soon the parent is known
1533                 m_attachment_parent_id == 0 && parent
1534                         Impossible case
1535         */
1536
1537         if (!parent) { // Detach or don't attach
1538                 if (m_matrixnode) {
1539                         v3s16 camera_offset = m_env->getCameraOffset();
1540                         v3f old_pos = getPosition();
1541
1542                         m_matrixnode->setParent(m_smgr->getRootSceneNode());
1543                         getPosRotMatrix().setTranslation(old_pos - intToFloat(camera_offset, BS));
1544                         m_matrixnode->updateAbsolutePosition();
1545                 }
1546         }
1547         else // Attach
1548         {
1549                 parent->updateAttachments();
1550                 scene::ISceneNode *parent_node = parent->getSceneNode();
1551                 scene::IAnimatedMeshSceneNode *parent_animated_mesh_node =
1552                                 parent->getAnimatedMeshSceneNode();
1553                 if (parent_animated_mesh_node && !m_attachment_bone.empty()) {
1554                         parent_node = parent_animated_mesh_node->getJointNode(m_attachment_bone.c_str());
1555                 }
1556
1557                 if (m_matrixnode && parent_node) {
1558                         m_matrixnode->setParent(parent_node);
1559                         parent_node->updateAbsolutePosition();
1560                         getPosRotMatrix().setTranslation(m_attachment_position);
1561                         //setPitchYawRoll(getPosRotMatrix(), m_attachment_rotation);
1562                         // use Irrlicht eulers instead
1563                         getPosRotMatrix().setRotationDegrees(m_attachment_rotation);
1564                         m_matrixnode->updateAbsolutePosition();
1565                 }
1566         }
1567 }
1568
1569 bool GenericCAO::visualExpiryRequired(const ObjectProperties &new_) const
1570 {
1571         const ObjectProperties &old = m_prop;
1572         /* Visuals do not need to be expired for:
1573          * - nametag props: handled by updateNametag()
1574          * - textures:      handled by updateTextures()
1575          * - sprite props:  handled by updateTexturePos()
1576          * - glow:          handled by updateLight()
1577          * - any other properties that do not change appearance
1578          */
1579
1580         bool uses_legacy_texture = new_.wield_item.empty() &&
1581                 (new_.visual == "wielditem" || new_.visual == "item");
1582         // Ordered to compare primitive types before std::vectors
1583         return old.backface_culling != new_.backface_culling ||
1584                 old.is_visible != new_.is_visible ||
1585                 old.mesh != new_.mesh ||
1586                 old.shaded != new_.shaded ||
1587                 old.use_texture_alpha != new_.use_texture_alpha ||
1588                 old.visual != new_.visual ||
1589                 old.visual_size != new_.visual_size ||
1590                 old.wield_item != new_.wield_item ||
1591                 old.colors != new_.colors ||
1592                 (uses_legacy_texture && old.textures != new_.textures);
1593 }
1594
1595 void GenericCAO::processMessage(const std::string &data)
1596 {
1597         //infostream<<"GenericCAO: Got message"<<std::endl;
1598         std::istringstream is(data, std::ios::binary);
1599         // command
1600         u8 cmd = readU8(is);
1601         if (cmd == AO_CMD_SET_PROPERTIES) {
1602                 ObjectProperties newprops;
1603                 newprops.show_on_minimap = m_is_player; // default
1604
1605                 newprops.deSerialize(is);
1606
1607                 // Check what exactly changed
1608                 bool expire_visuals = visualExpiryRequired(newprops);
1609                 bool textures_changed = m_prop.textures != newprops.textures;
1610
1611                 // Apply changes
1612                 m_prop = std::move(newprops);
1613
1614                 m_selection_box = m_prop.selectionbox;
1615                 m_selection_box.MinEdge *= BS;
1616                 m_selection_box.MaxEdge *= BS;
1617
1618                 m_tx_size.X = 1.0f / m_prop.spritediv.X;
1619                 m_tx_size.Y = 1.0f / m_prop.spritediv.Y;
1620
1621                 if(!m_initial_tx_basepos_set){
1622                         m_initial_tx_basepos_set = true;
1623                         m_tx_basepos = m_prop.initial_sprite_basepos;
1624                 }
1625                 if (m_is_local_player) {
1626                         LocalPlayer *player = m_env->getLocalPlayer();
1627                         player->makes_footstep_sound = m_prop.makes_footstep_sound;
1628                         aabb3f collision_box = m_prop.collisionbox;
1629                         collision_box.MinEdge *= BS;
1630                         collision_box.MaxEdge *= BS;
1631                         player->setCollisionbox(collision_box);
1632                         player->setEyeHeight(m_prop.eye_height);
1633                         player->setZoomFOV(m_prop.zoom_fov);
1634                 }
1635
1636                 if ((m_is_player && !m_is_local_player) && m_prop.nametag.empty())
1637                         m_prop.nametag = m_name;
1638                 if (m_is_local_player)
1639                         m_prop.show_on_minimap = false;
1640
1641                 if (expire_visuals) {
1642                         expireVisuals();
1643                 } else {
1644                         infostream << "GenericCAO: properties updated but expiring visuals"
1645                                 << " not necessary" << std::endl;
1646                         if (textures_changed) {
1647                                 // don't update while punch texture modifier is active
1648                                 if (m_reset_textures_timer < 0)
1649                                         updateTextures(m_current_texture_modifier);
1650                         }
1651                         updateNametag();
1652                         updateMarker();
1653                 }
1654         } else if (cmd == AO_CMD_UPDATE_POSITION) {
1655                 // Not sent by the server if this object is an attachment.
1656                 // We might however get here if the server notices the object being detached before the client.
1657                 m_position = readV3F32(is);
1658                 m_velocity = readV3F32(is);
1659                 m_acceleration = readV3F32(is);
1660                 m_rotation = readV3F32(is);
1661
1662                 m_rotation = wrapDegrees_0_360_v3f(m_rotation);
1663                 bool do_interpolate = readU8(is);
1664                 bool is_end_position = readU8(is);
1665                 float update_interval = readF32(is);
1666
1667                 // Place us a bit higher if we're physical, to not sink into
1668                 // the ground due to sucky collision detection...
1669                 if(m_prop.physical)
1670                         m_position += v3f(0,0.002,0);
1671
1672                 if(getParent() != NULL) // Just in case
1673                         return;
1674
1675                 if(do_interpolate)
1676                 {
1677                         if(!m_prop.physical)
1678                                 pos_translator.update(m_position, is_end_position, update_interval);
1679                 } else {
1680                         pos_translator.init(m_position);
1681                 }
1682                 rot_translator.update(m_rotation, false, update_interval);
1683                 updateNodePos();
1684         } else if (cmd == AO_CMD_SET_TEXTURE_MOD) {
1685                 std::string mod = deSerializeString16(is);
1686
1687                 // immediately reset a engine issued texture modifier if a mod sends a different one
1688                 if (m_reset_textures_timer > 0) {
1689                         m_reset_textures_timer = -1;
1690                         updateTextures(m_previous_texture_modifier);
1691                 }
1692                 updateTextures(mod);
1693         } else if (cmd == AO_CMD_SET_SPRITE) {
1694                 v2s16 p = readV2S16(is);
1695                 int num_frames = readU16(is);
1696                 float framelength = readF32(is);
1697                 bool select_horiz_by_yawpitch = readU8(is);
1698
1699                 m_tx_basepos = p;
1700                 m_anim_num_frames = num_frames;
1701                 m_anim_framelength = framelength;
1702                 m_tx_select_horiz_by_yawpitch = select_horiz_by_yawpitch;
1703
1704                 updateTexturePos();
1705         } else if (cmd == AO_CMD_SET_PHYSICS_OVERRIDE) {
1706                 float override_speed = readF32(is);
1707                 float override_jump = readF32(is);
1708                 float override_gravity = readF32(is);
1709                 // these are sent inverted so we get true when the server sends nothing
1710                 bool sneak = !readU8(is);
1711                 bool sneak_glitch = !readU8(is);
1712                 bool new_move = !readU8(is);
1713
1714
1715                 if(m_is_local_player)
1716                 {
1717                         LocalPlayer *player = m_env->getLocalPlayer();
1718                         player->physics_override_speed = override_speed;
1719                         player->physics_override_jump = override_jump;
1720                         player->physics_override_gravity = override_gravity;
1721                         player->physics_override_sneak = sneak;
1722                         player->physics_override_sneak_glitch = sneak_glitch;
1723                         player->physics_override_new_move = new_move;
1724                 }
1725         } else if (cmd == AO_CMD_SET_ANIMATION) {
1726                 // TODO: change frames send as v2s32 value
1727                 v2f range = readV2F32(is);
1728                 if (!m_is_local_player) {
1729                         m_animation_range = v2s32((s32)range.X, (s32)range.Y);
1730                         m_animation_speed = readF32(is);
1731                         m_animation_blend = readF32(is);
1732                         // these are sent inverted so we get true when the server sends nothing
1733                         m_animation_loop = !readU8(is);
1734                         updateAnimation();
1735                 } else {
1736                         LocalPlayer *player = m_env->getLocalPlayer();
1737                         if(player->last_animation == NO_ANIM)
1738                         {
1739                                 m_animation_range = v2s32((s32)range.X, (s32)range.Y);
1740                                 m_animation_speed = readF32(is);
1741                                 m_animation_blend = readF32(is);
1742                                 // these are sent inverted so we get true when the server sends nothing
1743                                 m_animation_loop = !readU8(is);
1744                         }
1745                         // update animation only if local animations present
1746                         // and received animation is unknown (except idle animation)
1747                         bool is_known = false;
1748                         for (int i = 1;i<4;i++)
1749                         {
1750                                 if(m_animation_range.Y == player->local_animations[i].Y)
1751                                         is_known = true;
1752                         }
1753                         if(!is_known ||
1754                                         (player->local_animations[1].Y + player->local_animations[2].Y < 1))
1755                         {
1756                                         updateAnimation();
1757                         }
1758                 }
1759         } else if (cmd == AO_CMD_SET_ANIMATION_SPEED) {
1760                 m_animation_speed = readF32(is);
1761                 updateAnimationSpeed();
1762         } else if (cmd == AO_CMD_SET_BONE_POSITION) {
1763                 std::string bone = deSerializeString16(is);
1764                 v3f position = readV3F32(is);
1765                 v3f rotation = readV3F32(is);
1766                 m_bone_position[bone] = core::vector2d<v3f>(position, rotation);
1767
1768                 // updateBonePosition(); now called every step
1769         } else if (cmd == AO_CMD_ATTACH_TO) {
1770                 u16 parent_id = readS16(is);
1771                 std::string bone = deSerializeString16(is);
1772                 v3f position = readV3F32(is);
1773                 v3f rotation = readV3F32(is);
1774                 m_force_visible = readU8(is); // Returns false for EOF
1775
1776                 setAttachment(parent_id, bone, position, rotation);
1777
1778                 // Forcibly show attachments if required by set_attach
1779                 if (m_force_visible)
1780                         m_is_visible = true;
1781                 // localplayer itself can't be attached to localplayer
1782                 else if (!m_is_local_player) {
1783                         // Objects attached to the local player should be hidden in first
1784                         // person provided the forced boolean isn't set.
1785                         m_is_visible = !m_attached_to_local ||
1786                                 m_client->getCamera()->getCameraMode() != CAMERA_MODE_FIRST;
1787                         m_force_visible = false;
1788                 } else {
1789                         // Local players need to have this set,
1790                         // otherwise first person attachments fail.
1791                         m_is_visible = true;
1792                 }
1793         } else if (cmd == AO_CMD_PUNCHED) {
1794                 u16 result_hp = readU16(is);
1795
1796                 // Use this instead of the send damage to not interfere with prediction
1797                 s32 damage = (s32)m_hp - (s32)result_hp;
1798
1799                 m_hp = result_hp;
1800
1801                 if (m_is_local_player)
1802                         m_env->getLocalPlayer()->hp = m_hp;
1803
1804                 if (damage > 0)
1805                 {
1806                         if (m_hp == 0)
1807                         {
1808                                 // TODO: Execute defined fast response
1809                                 // As there is no definition, make a smoke puff
1810                                 ClientSimpleObject *simple = createSmokePuff(
1811                                                 m_smgr, m_env, m_position,
1812                                                 v2f(m_prop.visual_size.X, m_prop.visual_size.Y) * BS);
1813                                 m_env->addSimpleObject(simple);
1814                         } else if (m_reset_textures_timer < 0 && !m_prop.damage_texture_modifier.empty()) {
1815                                 m_reset_textures_timer = 0.05;
1816                                 if(damage >= 2)
1817                                         m_reset_textures_timer += 0.05 * damage;
1818                                 updateTextures(m_current_texture_modifier + m_prop.damage_texture_modifier);
1819                         }
1820                 }
1821
1822                 if (m_hp == 0) {
1823                         // Same as 'Server::DiePlayer'
1824                         clearParentAttachment();
1825                         // Same as 'ObjectRef::l_remove'
1826                         if (!m_is_player)
1827                                 clearChildAttachments();
1828                 }
1829         } else if (cmd == AO_CMD_UPDATE_ARMOR_GROUPS) {
1830                 m_armor_groups.clear();
1831                 int armor_groups_size = readU16(is);
1832                 for(int i=0; i<armor_groups_size; i++)
1833                 {
1834                         std::string name = deSerializeString16(is);
1835                         int rating = readS16(is);
1836                         m_armor_groups[name] = rating;
1837                 }
1838         } else if (cmd == AO_CMD_SPAWN_INFANT) {
1839                 u16 child_id = readU16(is);
1840                 u8 type = readU8(is); // maybe this will be useful later
1841                 (void)type;
1842
1843                 addAttachmentChild(child_id);
1844         } else if (cmd == AO_CMD_OBSOLETE1) {
1845                 // Don't do anything and also don't log a warning
1846         } else {
1847                 warningstream << FUNCTION_NAME
1848                         << ": unknown command or outdated client \""
1849                         << +cmd << "\"" << std::endl;
1850         }
1851 }
1852
1853 /* \pre punchitem != NULL
1854  */
1855 bool GenericCAO::directReportPunch(v3f dir, const ItemStack *punchitem,
1856                 float time_from_last_punch)
1857 {
1858         assert(punchitem);      // pre-condition
1859         const ToolCapabilities *toolcap =
1860                         &punchitem->getToolCapabilities(m_client->idef());
1861         PunchDamageResult result = getPunchDamage(
1862                         m_armor_groups,
1863                         toolcap,
1864                         punchitem,
1865                         time_from_last_punch);
1866
1867         if(result.did_punch && result.damage != 0)
1868         {
1869                 if(result.damage < m_hp)
1870                 {
1871                         m_hp -= result.damage;
1872                 } else {
1873                         m_hp = 0;
1874                         // TODO: Execute defined fast response
1875                         // As there is no definition, make a smoke puff
1876                         ClientSimpleObject *simple = createSmokePuff(
1877                                         m_smgr, m_env, m_position,
1878                                         v2f(m_prop.visual_size.X, m_prop.visual_size.Y) * BS);
1879                         m_env->addSimpleObject(simple);
1880                 }
1881                 if (m_reset_textures_timer < 0 && !m_prop.damage_texture_modifier.empty()) {
1882                         m_reset_textures_timer = 0.05;
1883                         if (result.damage >= 2)
1884                                 m_reset_textures_timer += 0.05 * result.damage;
1885                         updateTextures(m_current_texture_modifier + m_prop.damage_texture_modifier);
1886                 }
1887         }
1888
1889         return false;
1890 }
1891
1892 std::string GenericCAO::debugInfoText()
1893 {
1894         std::ostringstream os(std::ios::binary);
1895         os<<"GenericCAO hp="<<m_hp<<"\n";
1896         os<<"armor={";
1897         for(ItemGroupList::const_iterator i = m_armor_groups.begin();
1898                         i != m_armor_groups.end(); ++i)
1899         {
1900                 os<<i->first<<"="<<i->second<<", ";
1901         }
1902         os<<"}";
1903         return os.str();
1904 }
1905
1906 void GenericCAO::updateMeshCulling()
1907 {
1908         if (!m_is_local_player)
1909                 return;
1910
1911         // Grab the active player scene node so we know there's
1912         // at least a mesh to occlude from the camera.
1913         irr::scene::ISceneNode *node = getSceneNode();
1914         if (!node)
1915                 return;
1916
1917         if (m_client->getCamera()->getCameraMode() == CAMERA_MODE_FIRST) {
1918                 // Hide the mesh by culling both front and
1919                 // back faces. Serious hackyness but it works for our
1920                 // purposes. This also preserves the skeletal armature.
1921                 node->setMaterialFlag(video::EMF_BACK_FACE_CULLING,
1922                         true);
1923                 node->setMaterialFlag(video::EMF_FRONT_FACE_CULLING,
1924                         true);
1925         } else {
1926                 // Restore mesh visibility.
1927                 node->setMaterialFlag(video::EMF_BACK_FACE_CULLING,
1928                         m_prop.backface_culling);
1929                 node->setMaterialFlag(video::EMF_FRONT_FACE_CULLING,
1930                         false);
1931         }
1932 }
1933
1934 // Prototype
1935 GenericCAO proto_GenericCAO(NULL, NULL);