src/minimap.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2015 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 "minimap.h"
  21 #include "logoutputbuffer.h"
  22 #include "jthread/jmutexautolock.h"
  23 #include "jthread/jsemaphore.h"
  24 #include "clientmap.h"
  25 #include "settings.h"
  26 #include "nodedef.h"
  27 #include "porting.h"
  28 #include "util/numeric.h"
  29 #include "util/string.h"
  30 #include <math.h>
  31
  32 QueuedMinimapUpdate::QueuedMinimapUpdate():
  33         pos(-1337,-1337,-1337),
  34         data(NULL)
  35 {
  36 }
  37
  38 QueuedMinimapUpdate::~QueuedMinimapUpdate()
  39 {
  40         delete data;
  41 }
  42
  43 MinimapUpdateQueue::MinimapUpdateQueue()
  44 {
  45 }
  46
  47 MinimapUpdateQueue::~MinimapUpdateQueue()
  48 {
  49         JMutexAutoLock lock(m_mutex);
  50
  51         for (std::list<QueuedMinimapUpdate*>::iterator
  52                         i = m_queue.begin();
  53                         i != m_queue.end(); ++i) {
  54                 QueuedMinimapUpdate *q = *i;
  55                 delete q;
  56         }
  57 }
  58
  59 bool MinimapUpdateQueue::addBlock(v3s16 pos, MinimapMapblock *data)
  60 {
  61         DSTACK(__FUNCTION_NAME);
  62
  63         JMutexAutoLock lock(m_mutex);
  64
  65         /*
  66                 Find if block is already in queue.
  67                 If it is, update the data and quit.
  68         */
  69         for (std::list<QueuedMinimapUpdate*>::iterator
  70                         i = m_queue.begin();
  71                         i != m_queue.end(); ++i) {
  72                 QueuedMinimapUpdate *q = *i;
  73                 if (q->pos == pos) {
  74                         delete q->data;
  75                         q->data = data;
  76                         return false;
  77                 }
  78         }
  79
  80         /*
  81                 Add the block
  82         */
  83         QueuedMinimapUpdate *q = new QueuedMinimapUpdate;
  84         q->pos = pos;
  85         q->data = data;
  86         m_queue.push_back(q);
  87         return true;
  88 }
  89
  90 QueuedMinimapUpdate * MinimapUpdateQueue::pop()
  91 {
  92         JMutexAutoLock lock(m_mutex);
  93
  94         for (std::list<QueuedMinimapUpdate*>::iterator
  95                         i = m_queue.begin();
  96                         i != m_queue.end(); i++) {
  97                 QueuedMinimapUpdate *q = *i;
  98                 m_queue.erase(i);
  99                 return q;
 100         }
 101         return NULL;
 102 }
 103
 104 /*
 105         Minimap update thread
 106 */
 107
 108 void MinimapUpdateThread::enqueue_Block(v3s16 pos, MinimapMapblock *data)
 109 {
 110         m_queue.addBlock(pos, data);
 111         deferUpdate();
 112 }
 113
 114 void MinimapUpdateThread::doUpdate()
 115 {
 116         while (m_queue.size()) {
 117                 QueuedMinimapUpdate *q = m_queue.pop();
 118                 std::map<v3s16, MinimapMapblock *>::iterator it;
 119                 it = m_blocks_cache.find(q->pos);
 120                 if (q->data) {
 121                         m_blocks_cache[q->pos] = q->data;
 122                 } else if (it != m_blocks_cache.end()) {
 123                         delete it->second;
 124                         m_blocks_cache.erase(it);
 125                 }
 126         }
 127         if (data->map_invalidated) {
 128                 if (data->mode != MINIMAP_MODE_OFF) {
 129                         getMap(data->pos, data->map_size, data->scan_height, data->radar);
 130                         data->map_invalidated = false;
 131                 }
 132         }
 133 }
 134
 135 MinimapUpdateThread::~MinimapUpdateThread()
 136 {
 137         for (std::map<v3s16, MinimapMapblock *>::iterator
 138                         it = m_blocks_cache.begin();
 139                         it != m_blocks_cache.end(); it++) {
 140                 delete it->second;
 141         }
 142 }
 143
 144 MinimapPixel *MinimapUpdateThread::getMinimapPixel(v3s16 pos, s16 height, s16 &pixel_height)
 145 {
 146         pixel_height = height - MAP_BLOCKSIZE;
 147         v3s16 blockpos_max, blockpos_min, relpos;
 148         getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y - height / 2, pos.Z), blockpos_min, relpos);
 149         getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y + height / 2, pos.Z), blockpos_max, relpos);
 150         std::map<v3s16, MinimapMapblock *>::iterator it;
 151         for (s16 i = blockpos_max.Y; i > blockpos_min.Y - 1; i--) {
 152                 it = m_blocks_cache.find(v3s16(blockpos_max.X, i, blockpos_max.Z));
 153                 if (it != m_blocks_cache.end()) {
 154                         MinimapPixel *pixel = &it->second->data[relpos.X + relpos.Z * MAP_BLOCKSIZE];
 155                         if (pixel->id != CONTENT_AIR) {
 156                                 pixel_height += pixel->height;
 157                                 return pixel;
 158                         }
 159                 }
 160                 pixel_height -= MAP_BLOCKSIZE;
 161         }
 162         return NULL;
 163 }
 164
 165 s16 MinimapUpdateThread::getAirCount(v3s16 pos, s16 height)
 166 {
 167         s16 air_count = 0;
 168         v3s16 blockpos_max, blockpos_min, relpos;
 169         getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y - height / 2, pos.Z), blockpos_min, relpos);
 170         getNodeBlockPosWithOffset(v3s16(pos.X, pos.Y + height / 2, pos.Z), blockpos_max, relpos);
 171         std::map<v3s16, MinimapMapblock *>::iterator it;
 172         for (s16 i = blockpos_max.Y; i > blockpos_min.Y - 1; i--) {
 173                 it = m_blocks_cache.find(v3s16(blockpos_max.X, i, blockpos_max.Z));
 174                 if (it != m_blocks_cache.end()) {
 175                         MinimapPixel *pixel = &it->second->data[relpos.X + relpos.Z * MAP_BLOCKSIZE];
 176                         air_count += pixel->air_count;
 177                 }
 178         }
 179         return air_count;
 180 }
 181
 182 void MinimapUpdateThread::getMap(v3s16 pos, s16 size, s16 height, bool radar)
 183 {
 184         v3s16 p = v3s16 (pos.X - size / 2, pos.Y, pos.Z - size / 2);
 185
 186         for (s16 x = 0; x < size; x++) {
 187                 for (s16 z = 0; z < size; z++){
 188                         u16 id = CONTENT_AIR;
 189                         MinimapPixel* minimap_pixel = &data->minimap_scan[x + z * size];
 190                         if (!radar) {
 191                                 s16 pixel_height = 0;
 192                                 MinimapPixel* cached_pixel =
 193                                         getMinimapPixel(v3s16(p.X + x, p.Y, p.Z + z), height, pixel_height);
 194                                 if (cached_pixel) {
 195                                         id = cached_pixel->id;
 196                                         minimap_pixel->height = pixel_height;
 197                                 }
 198                         } else {
 199                                 minimap_pixel->air_count = getAirCount (v3s16(p.X + x, p.Y, p.Z + z), height);
 200                         }
 201                         minimap_pixel->id = id;
 202                 }
 203         }
 204 }
 205
 206 Mapper::Mapper(IrrlichtDevice *device, Client *client)
 207 {
 208         this->device = device;
 209         this->client = client;
 210         this->driver = device->getVideoDriver();
 211         this->tsrc = client->getTextureSource();
 212         this->player = client->getEnv().getLocalPlayer();
 213         this->shdrsrc = client->getShaderSource();
 214
 215         m_enable_shaders = g_settings->getBool("enable_shaders");
 216         m_enable_shaders = g_settings->getBool("enable_shaders");
 217         if (g_settings->getBool("minimap_double_scan_height")) {
 218                 m_surface_mode_scan_height = 256;
 219         } else {
 220                 m_surface_mode_scan_height = 128;
 221         }
 222         data = new MinimapData;
 223         data->mode = MINIMAP_MODE_OFF;
 224         data->radar = false;
 225         data->map_invalidated = true;
 226         data->heightmap_image = NULL;
 227         data->minimap_image = NULL;
 228         data->texture = NULL;
 229         data->minimap_shape_round = g_settings->getBool("minimap_shape_round");
 230         std::string fname1 = "minimap_mask_round.png";
 231         std::string fname2 = "minimap_overlay_round.png";
 232         data->minimap_mask_round = driver->createImage (tsrc->getTexture(fname1),
 233                         core::position2d<s32>(0,0), core::dimension2d<u32>(512,512));
 234         data->minimap_overlay_round = tsrc->getTexture(fname2);
 235         fname1 = "minimap_mask_square.png";
 236         fname2 = "minimap_overlay_square.png";
 237         data->minimap_mask_square = driver->createImage (tsrc->getTexture(fname1),
 238                         core::position2d<s32>(0,0), core::dimension2d<u32>(512,512));
 239         data->minimap_overlay_square = tsrc->getTexture(fname2);
 240         data->player_marker = tsrc->getTexture("player_marker.png");
 241         m_meshbuffer = getMinimapMeshBuffer();
 242         m_minimap_update_thread = new MinimapUpdateThread(device, client);
 243         m_minimap_update_thread->data = data;
 244         m_minimap_update_thread->Start();
 245 }
 246
 247 Mapper::~Mapper()
 248 {
 249         m_minimap_update_thread->Stop();
 250         m_minimap_update_thread->Wait();
 251         m_meshbuffer->drop();
 252         data->minimap_mask_round->drop();
 253         data->minimap_mask_square->drop();
 254         driver->removeTexture(data->texture);
 255         driver->removeTexture(data->heightmap_texture);
 256         driver->removeTexture(data->minimap_overlay_round);
 257         driver->removeTexture(data->minimap_overlay_square);
 258         delete data;
 259         delete m_minimap_update_thread;
 260 }
 261
 262 void Mapper::addBlock (v3s16 pos, MinimapMapblock *data)
 263 {
 264         m_minimap_update_thread->enqueue_Block(pos, data);
 265 }
 266
 267 MinimapMode Mapper::getMinimapMode()
 268 {
 269         return data->mode;
 270 }
 271
 272 void Mapper::toggleMinimapShape()
 273 {
 274         data->minimap_shape_round = !data->minimap_shape_round;
 275         g_settings->setBool(("minimap_shape_round"), data->minimap_shape_round);
 276         m_minimap_update_thread->deferUpdate();
 277 }
 278
 279 void Mapper::setMinimapMode(MinimapMode mode)
 280 {
 281         static const u16 modeDefs[7 * 3] = {
 282                 0, 0, 0,
 283                 0, m_surface_mode_scan_height, 256,
 284                 0, m_surface_mode_scan_height, 128,
 285                 0, m_surface_mode_scan_height, 64,
 286                 1, 32, 128,
 287                 1, 32, 64,
 288                 1, 32, 32};
 289
 290         JMutexAutoLock lock(m_mutex);
 291         data->radar = (bool)modeDefs[(int)mode * 3];
 292         data->scan_height = modeDefs[(int)mode * 3 + 1];
 293         data->map_size = modeDefs[(int)mode * 3 + 2];
 294         data->mode = mode;
 295         m_minimap_update_thread->deferUpdate();
 296 }
 297
 298 void Mapper::setPos(v3s16 pos)
 299 {
 300         JMutexAutoLock lock(m_mutex);
 301         if (pos != data->old_pos) {
 302                 data->old_pos = data->pos;
 303                 data->pos = pos;
 304                 m_minimap_update_thread->deferUpdate();
 305         }
 306 }
 307
 308 video::ITexture *Mapper::getMinimapTexture()
 309 {
 310         // update minimap textures when new scan is ready
 311         if (!data->map_invalidated) {
 312                 // create minimap and heightmap image
 313                 core::dimension2d<u32> dim(data->map_size,data->map_size);
 314                 video::IImage *map_image = driver->createImage(video::ECF_A8R8G8B8, dim);
 315                 video::IImage *heightmap_image = driver->createImage(video::ECF_A8R8G8B8, dim);
 316                 video::IImage *minimap_image = driver->createImage(video::ECF_A8R8G8B8,
 317                         core::dimension2d<u32>(512, 512));
 318
 319                 video::SColor c;
 320                 if (!data->radar) {
 321                         // surface mode
 322                         for (s16 x = 0; x < data->map_size; x++) {
 323                                 for (s16 z = 0; z < data->map_size; z++) {
 324                                         MinimapPixel* minimap_pixel = &data->minimap_scan[x + z * data->map_size];
 325                                         const ContentFeatures &f = client->getNodeDefManager()->get(minimap_pixel->id);
 326                                         c = f.minimap_color;
 327                                         c.setAlpha(240);
 328                                         map_image->setPixel(x, data->map_size - z -1, c);
 329                                         u32 h = minimap_pixel->height;
 330                                         heightmap_image->setPixel(x,data->map_size -z -1,
 331                                                 video::SColor(255, h, h, h));
 332                                 }
 333                         }
 334                 } else {
 335                         // radar mode
 336                         c = video::SColor (240, 0 , 0, 0);
 337                         for (s16 x = 0; x < data->map_size; x++) {
 338                                 for (s16 z = 0; z < data->map_size; z++) {
 339                                         MinimapPixel* minimap_pixel = &data->minimap_scan[x + z * data->map_size];
 340                                         if (minimap_pixel->air_count > 0) {
 341                                                 c.setGreen(core::clamp(core::round32(32 + minimap_pixel->air_count * 8), 0, 255));
 342                                         } else {
 343                                                 c.setGreen(0);
 344                                         }
 345                                         map_image->setPixel(x, data->map_size - z -1, c);
 346                                 }
 347                         }
 348                 }
 349
 350                 map_image->copyToScaling(minimap_image);
 351                 map_image->drop();
 352
 353                 video::IImage *minimap_mask;
 354                 if (data->minimap_shape_round) {
 355                         minimap_mask = data->minimap_mask_round;
 356                 } else {
 357                         minimap_mask = data->minimap_mask_square;
 358                 }
 359                 for (s16 x = 0; x < 512; x++) {
 360                         for (s16 y = 0; y < 512; y++) {
 361                                 video::SColor mask_col = minimap_mask->getPixel(x, y);
 362                                 if (!mask_col.getAlpha()) {
 363                                         minimap_image->setPixel(x, y, video::SColor(0,0,0,0));
 364                                 }
 365                         }
 366                 }
 367
 368                 if (data->texture) {
 369                         driver->removeTexture(data->texture);
 370                 }
 371                 if (data->heightmap_texture) {
 372                         driver->removeTexture(data->heightmap_texture);
 373                 }
 374                 data->texture = driver->addTexture("minimap__", minimap_image);
 375                 data->heightmap_texture = driver->addTexture("minimap_heightmap__", heightmap_image);
 376                 minimap_image->drop();
 377                 heightmap_image->drop();
 378
 379                 data->map_invalidated = true;
 380         }
 381         return data->texture;
 382 }
 383
 384 v3f Mapper::getYawVec()
 385 {
 386         if (data->minimap_shape_round) {
 387                 return v3f(cos(player->getYaw()* core::DEGTORAD),
 388                         sin(player->getYaw()* core::DEGTORAD), 1.0);
 389         } else {
 390                 return v3f(1.0, 0.0, 1.0);
 391         }
 392 }
 393
 394 scene::SMeshBuffer *Mapper::getMinimapMeshBuffer()
 395 {
 396         scene::SMeshBuffer *buf = new scene::SMeshBuffer();
 397         buf->Vertices.set_used(4);
 398         buf->Indices .set_used(6);
 399         video::SColor c(255, 255, 255, 255);
 400
 401         buf->Vertices[0] = video::S3DVertex(-1, -1, 0, 0, 0, 1, c, 0, 1);
 402         buf->Vertices[1] = video::S3DVertex(-1,  1, 0, 0, 0, 1, c, 0, 0);
 403         buf->Vertices[2] = video::S3DVertex( 1,  1, 0, 0, 0, 1, c, 1, 0);
 404         buf->Vertices[3] = video::S3DVertex( 1, -1, 0, 0, 0, 1, c, 1, 1);
 405
 406         buf->Indices[0] = 0;
 407         buf->Indices[1] = 1;
 408         buf->Indices[2] = 2;
 409         buf->Indices[3] = 2;
 410         buf->Indices[4] = 3;
 411         buf->Indices[5] = 0;
 412
 413         return buf;
 414 }
 415
 416 void Mapper::drawMinimap()
 417 {
 418         v2u32 screensize = porting::getWindowSize();
 419         u32 size = 0.25 * screensize.Y;
 420         video::ITexture* minimap_texture = getMinimapTexture();
 421         core::matrix4 matrix;
 422
 423         core::rect<s32> oldViewPort = driver->getViewPort();
 424         driver->setViewPort(core::rect<s32>(screensize.X - size - 10, 10,
 425                 screensize.X - 10, size + 10));
 426         core::matrix4 oldProjMat = driver->getTransform(video::ETS_PROJECTION);
 427         driver->setTransform(video::ETS_PROJECTION, core::matrix4());
 428         core::matrix4 oldViewMat = driver->getTransform(video::ETS_VIEW);
 429         driver->setTransform(video::ETS_VIEW, core::matrix4());
 430         matrix.makeIdentity();
 431
 432         if (minimap_texture) {
 433                 video::SMaterial& material = m_meshbuffer->getMaterial();
 434                 material.setFlag(video::EMF_TRILINEAR_FILTER, true);
 435                 material.Lighting = false;
 436                 material.TextureLayer[0].Texture = minimap_texture;
 437                 material.TextureLayer[1].Texture = data->heightmap_texture;
 438                 if (m_enable_shaders && !data->radar) {
 439                         u16 sid = shdrsrc->getShader("minimap_shader", 1, 1);
 440                         material.MaterialType = shdrsrc->getShaderInfo(sid).material;
 441                 } else {
 442                         material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 443                 }
 444
 445                 if (data->minimap_shape_round)
 446                         matrix.setRotationDegrees(core::vector3df(0, 0, 360 - player->getYaw()));
 447                 driver->setTransform(video::ETS_WORLD, matrix);
 448                 driver->setMaterial(material);
 449                 driver->drawMeshBuffer(m_meshbuffer);
 450                 video::ITexture *minimap_overlay;
 451                 if (data->minimap_shape_round) {
 452                         minimap_overlay = data->minimap_overlay_round;
 453                 } else {
 454                         minimap_overlay = data->minimap_overlay_square;
 455                 }
 456                 material.TextureLayer[0].Texture = minimap_overlay;
 457                 material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
 458                 driver->setMaterial(material);
 459                 driver->drawMeshBuffer(m_meshbuffer);
 460
 461                 if (!data->minimap_shape_round) {
 462                         matrix.setRotationDegrees(core::vector3df(0, 0, player->getYaw()));
 463                         driver->setTransform(video::ETS_WORLD, matrix);
 464                         material.TextureLayer[0].Texture = data->player_marker;
 465                         driver->setMaterial(material);
 466                         driver->drawMeshBuffer(m_meshbuffer);
 467                 }
 468         }
 469
 470         driver->setTransform(video::ETS_VIEW, oldViewMat);
 471         driver->setTransform(video::ETS_PROJECTION, oldProjMat);
 472         driver->setViewPort(oldViewPort);
 473 }