]> git.lizzy.rs Git - dragonfireclient.git/blobdiff - src/client/content_cao.cpp
Merge branch 'master' of https://github.com/minetest/minetest
[dragonfireclient.git] / src / client / content_cao.cpp
index c76f05bbbab5e17611c8bcf322bcfcfa0fe61a3d..c44c167b526e3cd1b702dedb58f1f2a9c3c5300a 100644 (file)
@@ -46,6 +46,9 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "wieldmesh.h"
 #include <algorithm>
 #include <cmath>
+#include "client/shader.h"
+#include "script/scripting_client.h"
+#include "client/minimap.h"
 
 class Settings;
 struct ToolCapabilities;
@@ -161,6 +164,15 @@ static void setBillboardTextureMatrix(scene::IBillboardSceneNode *bill,
        matrix.setTextureScale(txs, tys);
 }
 
+// Evaluate transform chain recursively; irrlicht does not do this for us
+static void updatePositionRecursive(scene::ISceneNode *node)
+{
+       scene::ISceneNode *parent = node->getParent();
+       if (parent)
+               updatePositionRecursive(parent);
+       node->updateAbsolutePosition();
+}
+
 /*
        TestCAO
 */
@@ -180,8 +192,7 @@ class TestCAO : public ClientActiveObject
 
        void addToScene(ITextureSource *tsrc);
        void removeFromScene(bool permanent);
-       void updateLight(u8 light_at_pos);
-       v3s16 getLightPosition();
+       void updateLight(u32 day_night_ratio);
        void updateNodePos();
 
        void step(float dtime, ClientEnvironment *env);
@@ -230,7 +241,7 @@ void TestCAO::addToScene(ITextureSource *tsrc)
        u16 indices[] = {0,1,2,2,3,0};
        buf->append(vertices, 4, indices, 6);
        // Set material
-       buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
+       buf->getMaterial().setFlag(video::EMF_LIGHTING, true);  // false
        buf->getMaterial().setFlag(video::EMF_BACK_FACE_CULLING, false);
        buf->getMaterial().setTexture(0, tsrc->getTextureForMesh("rat.png"));
        buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
@@ -253,15 +264,10 @@ void TestCAO::removeFromScene(bool permanent)
        m_node = NULL;
 }
 
-void TestCAO::updateLight(u8 light_at_pos)
+void TestCAO::updateLight(u32 day_night_ratio)
 {
 }
 
-v3s16 TestCAO::getLightPosition()
-{
-       return floatToInt(m_position, BS);
-}
-
 void TestCAO::updateNodePos()
 {
        if (!m_node)
@@ -303,7 +309,6 @@ void TestCAO::processMessage(const std::string &data)
        GenericCAO
 */
 
-#include "genericobject.h"
 #include "clientobject.h"
 
 GenericCAO::GenericCAO(Client *client, ClientEnvironment *env):
@@ -350,8 +355,12 @@ void GenericCAO::initialize(const std::string &data)
                        m_is_local_player = true;
                        m_is_visible = false;
                        player->setCAO(this);
+
+                       m_prop.show_on_minimap = false;
                }
        }
+
+       m_enable_shaders = g_settings->getBool("enable_shaders");
 }
 
 void GenericCAO::processInitData(const std::string &data)
@@ -366,7 +375,7 @@ void GenericCAO::processInitData(const std::string &data)
        }
 
        // PROTOCOL_VERSION >= 37
-       m_name = deSerializeString(is);
+       m_name = deSerializeString16(is);
        m_is_player = readU8(is);
        m_id = readU16(is);
        m_position = readV3F32(is);
@@ -376,7 +385,7 @@ void GenericCAO::processInitData(const std::string &data)
        const u8 num_messages = readU8(is);
 
        for (int i = 0; i < num_messages; i++) {
-               std::string message = deSerializeLongString(is);
+               std::string message = deSerializeString32(is);
                processMessage(message);
        }
 
@@ -451,22 +460,27 @@ void GenericCAO::setChildrenVisible(bool toset)
        for (u16 cao_id : m_attachment_child_ids) {
                GenericCAO *obj = m_env->getGenericCAO(cao_id);
                if (obj) {
-                       obj->setVisible(toset);
+                       // Check if the entity is forced to appear in first person.
+                       obj->setVisible(obj->m_force_visible ? true : toset);
                }
        }
 }
 
-void GenericCAO::setAttachment(int parent_id, const std::string &bone, v3f position, v3f rotation)
+void GenericCAO::setAttachment(int parent_id, const std::string &bone,
+               v3f position, v3f rotation, bool force_visible)
 {
        int old_parent = m_attachment_parent_id;
        m_attachment_parent_id = parent_id;
        m_attachment_bone = bone;
        m_attachment_position = position;
        m_attachment_rotation = rotation;
+       m_force_visible = force_visible;
 
        ClientActiveObject *parent = m_env->getActiveObject(parent_id);
 
        if (parent_id != old_parent) {
+               if (old_parent)
+                       m_waiting_for_reattach = 10;
                if (auto *o = m_env->getActiveObject(old_parent))
                        o->removeAttachmentChild(m_id);
                if (parent)
@@ -474,15 +488,30 @@ void GenericCAO::setAttachment(int parent_id, const std::string &bone, v3f posit
        }
 
        updateAttachments();
+
+       // Forcibly show attachments if required by set_attach
+       if (m_force_visible) {
+               m_is_visible = true;
+       } else if (!m_is_local_player) {
+               // Objects attached to the local player should be hidden in first person
+               m_is_visible = !m_attached_to_local ||
+                       m_client->getCamera()->getCameraMode() != CAMERA_MODE_FIRST || g_settings->getBool("freecam");
+               m_force_visible = false;
+       } else {
+               // Local players need to have this set,
+               // otherwise first person attachments fail.
+               m_is_visible = true;
+       }
 }
 
 void GenericCAO::getAttachment(int *parent_id, std::string *bone, v3f *position,
-       v3f *rotation) const
+       v3f *rotation, bool *force_visible) const
 {
        *parent_id = m_attachment_parent_id;
        *bone = m_attachment_bone;
        *position = m_attachment_position;
        *rotation = m_attachment_rotation;
+       *force_visible = m_force_visible;
 }
 
 void GenericCAO::clearChildAttachments()
@@ -492,7 +521,7 @@ void GenericCAO::clearChildAttachments()
                int child_id = *m_attachment_child_ids.begin();
 
                if (ClientActiveObject *child = m_env->getActiveObject(child_id))
-                       child->setAttachment(0, "", v3f(), v3f());
+                       child->setAttachment(0, "", v3f(), v3f(), false);
 
                removeAttachmentChild(child_id);
        }
@@ -501,9 +530,9 @@ void GenericCAO::clearChildAttachments()
 void GenericCAO::clearParentAttachment()
 {
        if (m_attachment_parent_id)
-               setAttachment(0, "", m_attachment_position, m_attachment_rotation);
+               setAttachment(0, "", m_attachment_position, m_attachment_rotation, false);
        else
-               setAttachment(0, "", v3f(), v3f());
+               setAttachment(0, "", v3f(), v3f(), false);
 }
 
 void GenericCAO::addAttachmentChild(int child_id)
@@ -561,6 +590,9 @@ void GenericCAO::removeFromScene(bool permanent)
                m_client->getCamera()->removeNametag(m_nametag);
                m_nametag = nullptr;
        }
+
+       if (m_marker && m_client->getMinimap())
+               m_client->getMinimap()->removeMarker(&m_marker);
 }
 
 void GenericCAO::addToScene(ITextureSource *tsrc)
@@ -573,20 +605,47 @@ void GenericCAO::addToScene(ITextureSource *tsrc)
 
        m_visuals_expired = false;
 
-       if (!m_prop.is_visible) {
+       if (!m_prop.is_visible)
                return;
-       }
 
-       video::E_MATERIAL_TYPE material_type = (m_prop.use_texture_alpha) ?
-               video::EMT_TRANSPARENT_ALPHA_CHANNEL : video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
+       infostream << "GenericCAO::addToScene(): " << m_prop.visual << std::endl;
+
+       if (m_enable_shaders) {
+               IShaderSource *shader_source = m_client->getShaderSource();
+               MaterialType material_type;
+
+               if (m_prop.shaded && m_prop.glow == 0)
+                       material_type = (m_prop.use_texture_alpha) ?
+                               TILE_MATERIAL_ALPHA : TILE_MATERIAL_BASIC;
+               else
+                       material_type = (m_prop.use_texture_alpha) ?
+                               TILE_MATERIAL_PLAIN_ALPHA : TILE_MATERIAL_PLAIN;
+
+               u32 shader_id = shader_source->getShader("object_shader", material_type, NDT_NORMAL);
+               m_material_type = shader_source->getShaderInfo(shader_id).material;
+       } else {
+               m_material_type = (m_prop.use_texture_alpha) ?
+                       video::EMT_TRANSPARENT_ALPHA_CHANNEL : video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
+       }
 
        auto grabMatrixNode = [this] {
-               infostream << "GenericCAO::addToScene(): " << m_prop.visual << std::endl;
                m_matrixnode = RenderingEngine::get_scene_manager()->
                                addDummyTransformationSceneNode();
                m_matrixnode->grab();
        };
 
+       auto setSceneNodeMaterial = [this] (scene::ISceneNode *node) {
+               node->setMaterialFlag(video::EMF_LIGHTING, false);
+               node->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
+               node->setMaterialFlag(video::EMF_FOG_ENABLE, true);
+               node->setMaterialType(m_material_type);
+
+               if (m_enable_shaders) {
+                       node->setMaterialFlag(video::EMF_GOURAUD_SHADING, false);
+                       node->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, true);
+               }
+       };
+
        if (m_prop.visual == "sprite") {
                grabMatrixNode();
                m_spritenode = RenderingEngine::get_scene_manager()->addBillboardSceneNode(
@@ -594,12 +653,9 @@ void GenericCAO::addToScene(ITextureSource *tsrc)
                m_spritenode->grab();
                m_spritenode->setMaterialTexture(0,
                                tsrc->getTextureForMesh("unknown_node.png"));
-               m_spritenode->setMaterialFlag(video::EMF_LIGHTING, false);
-               m_spritenode->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
-               m_spritenode->setMaterialType(material_type);
-               m_spritenode->setMaterialFlag(video::EMF_FOG_ENABLE, true);
-               u8 li = m_last_light;
-               m_spritenode->setColor(video::SColor(255,li,li,li));
+
+               setSceneNodeMaterial(m_spritenode);
+
                m_spritenode->setSize(v2f(m_prop.visual_size.X,
                                m_prop.visual_size.Y) * BS);
                {
@@ -613,16 +669,15 @@ void GenericCAO::addToScene(ITextureSource *tsrc)
                scene::SMesh *mesh = new scene::SMesh();
                double dx = BS * m_prop.visual_size.X / 2;
                double dy = BS * m_prop.visual_size.Y / 2;
-               u8 li = m_last_light;
-               video::SColor c(255, li, li, li);
+               video::SColor c(0xFFFFFFFF);
 
                { // Front
                        scene::IMeshBuffer *buf = new scene::SMeshBuffer();
                        video::S3DVertex vertices[4] = {
-                               video::S3DVertex(-dx, -dy, 0, 0,0,0, c, 1,1),
-                               video::S3DVertex( dx, -dy, 0, 0,0,0, c, 0,1),
-                               video::S3DVertex( dx,  dy, 0, 0,0,0, c, 0,0),
-                               video::S3DVertex(-dx,  dy, 0, 0,0,0, c, 1,0),
+                               video::S3DVertex(-dx, -dy, 0, 0,0,1, c, 1,1),
+                               video::S3DVertex( dx, -dy, 0, 0,0,1, c, 0,1),
+                               video::S3DVertex( dx,  dy, 0, 0,0,1, c, 0,0),
+                               video::S3DVertex(-dx,  dy, 0, 0,0,1, c, 1,0),
                        };
                        if (m_is_player) {
                                // Move minimal Y position to 0 (feet position)
@@ -635,7 +690,14 @@ void GenericCAO::addToScene(ITextureSource *tsrc)
                        buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
                        buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
                        buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
-                       buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+                       buf->getMaterial().MaterialType = m_material_type;
+
+                       if (m_enable_shaders) {
+                               buf->getMaterial().EmissiveColor = c;
+                               buf->getMaterial().setFlag(video::EMF_GOURAUD_SHADING, false);
+                               buf->getMaterial().setFlag(video::EMF_NORMALIZE_NORMALS, true);
+                       }
+
                        // Add to mesh
                        mesh->addMeshBuffer(buf);
                        buf->drop();
@@ -643,10 +705,10 @@ void GenericCAO::addToScene(ITextureSource *tsrc)
                { // Back
                        scene::IMeshBuffer *buf = new scene::SMeshBuffer();
                        video::S3DVertex vertices[4] = {
-                               video::S3DVertex( dx,-dy, 0, 0,0,0, c, 1,1),
-                               video::S3DVertex(-dx,-dy, 0, 0,0,0, c, 0,1),
-                               video::S3DVertex(-dx, dy, 0, 0,0,0, c, 0,0),
-                               video::S3DVertex( dx, dy, 0, 0,0,0, c, 1,0),
+                               video::S3DVertex( dx,-dy, 0, 0,0,-1, c, 1,1),
+                               video::S3DVertex(-dx,-dy, 0, 0,0,-1, c, 0,1),
+                               video::S3DVertex(-dx, dy, 0, 0,0,-1, c, 0,0),
+                               video::S3DVertex( dx, dy, 0, 0,0,-1, c, 1,0),
                        };
                        if (m_is_player) {
                                // Move minimal Y position to 0 (feet position)
@@ -659,7 +721,14 @@ void GenericCAO::addToScene(ITextureSource *tsrc)
                        buf->getMaterial().setFlag(video::EMF_LIGHTING, false);
                        buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, false);
                        buf->getMaterial().setFlag(video::EMF_FOG_ENABLE, true);
-                       buf->getMaterial().MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
+                       buf->getMaterial().MaterialType = m_material_type;
+
+                       if (m_enable_shaders) {
+                               buf->getMaterial().EmissiveColor = c;
+                               buf->getMaterial().setFlag(video::EMF_GOURAUD_SHADING, false);
+                               buf->getMaterial().setFlag(video::EMF_NORMALIZE_NORMALS, true);
+                       }
+
                        // Add to mesh
                        mesh->addMeshBuffer(buf);
                        buf->drop();
@@ -680,13 +749,10 @@ void GenericCAO::addToScene(ITextureSource *tsrc)
                mesh->drop();
 
                m_meshnode->setScale(m_prop.visual_size);
-               u8 li = m_last_light;
-               setMeshColor(m_meshnode->getMesh(), video::SColor(255,li,li,li));
+               m_meshnode->setMaterialFlag(video::EMF_BACK_FACE_CULLING,
+                       m_prop.backface_culling);
 
-               m_meshnode->setMaterialFlag(video::EMF_LIGHTING, false);
-               m_meshnode->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
-               m_meshnode->setMaterialType(material_type);
-               m_meshnode->setMaterialFlag(video::EMF_FOG_ENABLE, true);
+               setSceneNodeMaterial(m_meshnode);
        } else if (m_prop.visual == "mesh") {
                grabMatrixNode();
                scene::IAnimatedMesh *mesh = m_client->getMesh(m_prop.mesh, true);
@@ -695,19 +761,24 @@ void GenericCAO::addToScene(ITextureSource *tsrc)
                                addAnimatedMeshSceneNode(mesh, m_matrixnode);
                        m_animated_meshnode->grab();
                        mesh->drop(); // The scene node took hold of it
+
+                       if (!checkMeshNormals(mesh)) {
+                               infostream << "GenericCAO: recalculating normals for mesh "
+                                       << m_prop.mesh << std::endl;
+                               m_smgr->getMeshManipulator()->
+                                               recalculateNormals(mesh, true, false);
+                       }
+
                        m_animated_meshnode->animateJoints(); // Needed for some animations
                        m_animated_meshnode->setScale(m_prop.visual_size);
-                       u8 li = m_last_light;
 
                        // set vertex colors to ensure alpha is set
-                       setMeshColor(m_animated_meshnode->getMesh(), video::SColor(255,li,li,li));
+                       setMeshColor(m_animated_meshnode->getMesh(), video::SColor(0xFFFFFFFF));
+
+                       setAnimatedMeshColor(m_animated_meshnode, video::SColor(0xFFFFFFFF));
 
-                       setAnimatedMeshColor(m_animated_meshnode, video::SColor(255,li,li,li));
+                       setSceneNodeMaterial(m_animated_meshnode);
 
-                       m_animated_meshnode->setMaterialFlag(video::EMF_LIGHTING, true);
-                       m_animated_meshnode->setMaterialFlag(video::EMF_BILINEAR_FILTER, false);
-                       m_animated_meshnode->setMaterialType(material_type);
-                       m_animated_meshnode->setMaterialFlag(video::EMF_FOG_ENABLE, true);
                        m_animated_meshnode->setMaterialFlag(video::EMF_BACK_FACE_CULLING,
                                m_prop.backface_culling);
                } else
@@ -734,8 +805,7 @@ void GenericCAO::addToScene(ITextureSource *tsrc)
                        (m_prop.visual == "wielditem"));
 
                m_wield_meshnode->setScale(m_prop.visual_size / 2.0f);
-               u8 li = m_last_light;
-               m_wield_meshnode->setColor(video::SColor(255, li, li, li));
+               m_wield_meshnode->setColor(video::SColor(0xFFFFFFFF));
        } else {
                infostream<<"GenericCAO::addToScene(): \""<<m_prop.visual
                                <<"\" not supported"<<std::endl;
@@ -750,66 +820,151 @@ void GenericCAO::addToScene(ITextureSource *tsrc)
        if (node && m_matrixnode)
                node->setParent(m_matrixnode);
 
-       if (node && !m_prop.nametag.empty() && !m_is_local_player) {
-               // Add nametag
-               v3f pos;
-               pos.Y = m_prop.selectionbox.MaxEdge.Y + 0.3f;
-               m_nametag = m_client->getCamera()->addNametag(node,
-                       m_prop.nametag, m_prop.nametag_color,
-                       pos);
-       }
-
+       updateNametag();
+       updateMarker();
        updateNodePos();
        updateAnimation();
        updateBonePosition();
        updateAttachments();
+       setNodeLight(m_last_light);
+       updateMeshCulling();
 }
 
-void GenericCAO::updateLight(u8 light_at_pos)
-{
-       // Don't update light of attached one
-       if (getParent() != NULL) {
+void GenericCAO::updateLight(u32 day_night_ratio)
+{              
+       if (m_glow < 0)
                return;
-       }
 
-       updateLightNoCheck(light_at_pos);
-
-       // Update light of all children
-       for (u16 i : m_attachment_child_ids) {
-               ClientActiveObject *obj = m_env->getActiveObject(i);
-               if (obj) {
-                       obj->updateLightNoCheck(light_at_pos);
+       u8 light_at_pos = 0;
+       bool pos_ok = false;
+               
+       v3s16 pos[3];
+       u16 npos = getLightPosition(pos);
+       for (u16 i = 0; i < npos; i++) {
+               bool this_ok;
+               MapNode n = m_env->getMap().getNode(pos[i], &this_ok);
+               if (this_ok) {
+                       u8 this_light = n.getLightBlend(day_night_ratio, m_client->ndef());
+                       light_at_pos = MYMAX(light_at_pos, this_light);
+                       pos_ok = true;
                }
        }
+       if (!pos_ok)
+               light_at_pos = blend_light(day_night_ratio, LIGHT_SUN, 0);
+
+       u8 light = decode_light(light_at_pos + m_glow);
+       if (g_settings->getBool("fullbright"))
+               light = 255;
+       if (light != m_last_light) {
+               m_last_light = light;
+               setNodeLight(light);
+       }
 }
 
-void GenericCAO::updateLightNoCheck(u8 light_at_pos)
+void GenericCAO::setNodeLight(u8 light)
 {
-       if (m_glow < 0)
+       video::SColor color(255, light, light, light);
+
+       if (m_prop.visual == "wielditem" || m_prop.visual == "item") {
+               if (m_wield_meshnode)
+                       m_wield_meshnode->setNodeLightColor(color);
                return;
+       }
+
+       if (m_enable_shaders) {
+               if (m_prop.visual == "upright_sprite") {
+                       if (!m_meshnode)
+                               return;
+
+                       scene::IMesh *mesh = m_meshnode->getMesh();
+                       for (u32 i = 0; i < mesh->getMeshBufferCount(); ++i) {
+                               scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
+                               buf->getMaterial().EmissiveColor = color;
+                       }
+               } else {
+                       scene::ISceneNode *node = getSceneNode();
+                       if (!node)
+                               return;
 
-       u8 li = decode_light(light_at_pos + m_glow);
-       if (li != m_last_light) {
-               m_last_light = li;
-               video::SColor color(255,li,li,li);
+                       for (u32 i = 0; i < node->getMaterialCount(); ++i) {
+                               video::SMaterial &material = node->getMaterial(i);
+                               material.EmissiveColor = color;
+                       }
+               }
+       } else {
                if (m_meshnode) {
                        setMeshColor(m_meshnode->getMesh(), color);
                } else if (m_animated_meshnode) {
                        setAnimatedMeshColor(m_animated_meshnode, color);
-               } else if (m_wield_meshnode) {
-                       m_wield_meshnode->setColor(color);
                } else if (m_spritenode) {
                        m_spritenode->setColor(color);
                }
        }
 }
 
-v3s16 GenericCAO::getLightPosition()
+u16 GenericCAO::getLightPosition(v3s16 *pos)
 {
-       if (m_is_player)
-               return floatToInt(m_position + v3f(0, 0.5 * BS, 0), BS);
+       const auto &box = m_prop.collisionbox;
+       pos[0] = floatToInt(m_position + box.MinEdge * BS, BS);
+       pos[1] = floatToInt(m_position + box.MaxEdge * BS, BS);
+
+       // Skip center pos if it falls into the same node as Min or MaxEdge
+       if ((box.MaxEdge - box.MinEdge).getLengthSQ() < 3.0f)
+               return 2;
+       pos[2] = floatToInt(m_position + box.getCenter() * BS, BS);
+       return 3;
+}
 
-       return floatToInt(m_position, BS);
+void GenericCAO::updateMarker()
+{
+       if (!m_client->getMinimap())
+               return;
+
+       if (!m_prop.show_on_minimap) {
+               if (m_marker)
+                       m_client->getMinimap()->removeMarker(&m_marker);
+               return;
+       }
+
+       if (m_marker)
+               return;
+
+       scene::ISceneNode *node = getSceneNode();
+       if (!node)
+               return;
+       m_marker = m_client->getMinimap()->addMarker(node);
+}
+
+void GenericCAO::updateNametag()
+{
+       //if (m_is_local_player && ! g_settings->getBool("freecam")) // No nametag for local player
+               //return;
+
+       if (m_prop.nametag.empty()) {
+               // Delete nametag
+               if (m_nametag) {
+                       m_client->getCamera()->removeNametag(m_nametag);
+                       m_nametag = nullptr;
+               }
+               return;
+       }
+
+       scene::ISceneNode *node = getSceneNode();
+       if (!node)
+               return;
+
+       v3f pos;
+       pos.Y = m_prop.selectionbox.MaxEdge.Y + 0.3f;
+       if (!m_nametag) {
+               // Add nametag
+               m_nametag = m_client->getCamera()->addNametag(node,
+                       m_prop.nametag, m_prop.nametag_color, pos);
+       } else {
+               // Update nametag
+               m_nametag->nametag_text = m_prop.nametag;
+               m_nametag->nametag_color = m_prop.nametag_color;
+               m_nametag->nametag_pos = pos;
+       }
 }
 
 void GenericCAO::updateNodePos()
@@ -836,10 +991,12 @@ void GenericCAO::step(float dtime, ClientEnvironment *env)
        // Handle model animations and update positions instantly to prevent lags
        if (m_is_local_player) {
                LocalPlayer *player = m_env->getLocalPlayer();
-               m_position = player->getPosition();
+               m_position = player->getLegitPosition();
                pos_translator.val_current = m_position;
-               m_rotation.Y = wrapDegrees_0_360(player->getYaw());
-               rot_translator.val_current = m_rotation;
+               if (! g_settings->getBool("freecam")) {
+                       m_rotation.Y = wrapDegrees_0_360(player->getYaw());
+                       rot_translator.val_current = m_rotation;
+               }
 
                if (m_is_visible) {
                        int old_anim = player->last_animation;
@@ -849,9 +1006,9 @@ void GenericCAO::step(float dtime, ClientEnvironment *env)
                        const PlayerControl &controls = player->getPlayerControl();
 
                        bool walking = false;
-                       if (controls.up || controls.down || controls.left || controls.right ||
+                       if ((controls.up || controls.down || controls.left || controls.right ||
                                        controls.forw_move_joystick_axis != 0.f ||
-                                       controls.sidew_move_joystick_axis != 0.f)
+                                       controls.sidew_move_joystick_axis != 0.f) && ! g_settings->getBool("freecam"))
                                walking = true;
 
                        f32 new_speed = player->local_animation_speed;
@@ -859,24 +1016,24 @@ void GenericCAO::step(float dtime, ClientEnvironment *env)
                        bool allow_update = false;
 
                        // increase speed if using fast or flying fast
-                       if((g_settings->getBool("fast_move") &&
+                       if(((g_settings->getBool("fast_move") &&
                                        m_client->checkLocalPrivilege("fast")) &&
                                        (controls.aux1 ||
                                        (!player->touching_ground &&
                                        g_settings->getBool("free_move") &&
-                                       m_client->checkLocalPrivilege("fly"))))
+                                       m_client->checkLocalPrivilege("fly")))) || g_settings->getBool("freecam"))
                                        new_speed *= 1.5;
                        // slowdown speed if sneeking
-                       if (controls.sneak && walking)
+                       if (controls.sneak && walking && ! g_settings->getBool("no_slow"))
                                new_speed /= 2;
 
-                       if (walking && (controls.LMB || controls.RMB)) {
+                       if (walking && (controls.dig || controls.place)) {
                                new_anim = player->local_animations[3];
                                player->last_animation = WD_ANIM;
-                       } else if(walking) {
+                       } else if (walking) {
                                new_anim = player->local_animations[1];
                                player->last_animation = WALK_ANIM;
-                       } else if(controls.LMB || controls.RMB) {
+                       } else if (controls.dig || controls.place) {
                                new_anim = player->local_animations[2];
                                player->last_animation = DIG_ANIM;
                        }
@@ -899,9 +1056,9 @@ void GenericCAO::step(float dtime, ClientEnvironment *env)
 
                        // Update local player animations
                        if ((player->last_animation != old_anim ||
-                               m_animation_speed != old_anim_speed) &&
-                               player->last_animation != NO_ANIM && allow_update)
-                                       updateAnimation();
+                                       m_animation_speed != old_anim_speed) &&
+                                       player->last_animation != NO_ANIM && allow_update)
+                               updateAnimation();
 
                }
        }
@@ -1015,14 +1172,17 @@ void GenericCAO::step(float dtime, ClientEnvironment *env)
                        updateTextures(m_previous_texture_modifier);
                }
        }
-       if (!getParent() && std::fabs(m_prop.automatic_rotate) > 0.001) {
-               m_rotation.Y += dtime * m_prop.automatic_rotate * 180 / M_PI;
-               rot_translator.val_current = m_rotation;
-               updateNodePos();
+
+       if (!getParent() && node && fabs(m_prop.automatic_rotate) > 0.001f) {
+               // This is the child node's rotation. It is only used for automatic_rotate.
+               v3f local_rot = node->getRotation();
+               local_rot.Y = modulo360f(local_rot.Y - dtime * core::RADTODEG *
+                               m_prop.automatic_rotate);
+               node->setRotation(local_rot);
        }
 
        if (!getParent() && m_prop.automatic_face_movement_dir &&
-                       (fabs(m_velocity.Z) > 0.001 || fabs(m_velocity.X) > 0.001)) {
+                       (fabs(m_velocity.Z) > 0.001f || fabs(m_velocity.X) > 0.001f)) {
                float target_yaw = atan2(m_velocity.Z, m_velocity.X) * 180 / M_PI
                                + m_prop.automatic_face_movement_dir_offset;
                float max_rotation_per_sec =
@@ -1039,6 +1199,18 @@ void GenericCAO::step(float dtime, ClientEnvironment *env)
                rot_translator.val_current = m_rotation;
                updateNodePos();
        }
+
+       if (m_animated_meshnode) {
+               // Everything must be updated; the whole transform
+               // chain as well as the animated mesh node.
+               // Otherwise, bone attachments would be relative to
+               // a position that's one frame old.
+               if (m_matrixnode)
+                       updatePositionRecursive(m_matrixnode);
+               m_animated_meshnode->updateAbsolutePosition();
+               m_animated_meshnode->animateJoints();
+               updateBonePosition();
+       }
 }
 
 void GenericCAO::updateTexturePos()
@@ -1056,6 +1228,7 @@ void GenericCAO::updateTexturePos()
                int row = m_tx_basepos.Y;
                int col = m_tx_basepos.X;
 
+               // Yawpitch goes rightwards
                if (m_tx_select_horiz_by_yawpitch) {
                        if (cam_to_entity.Y > 0.75)
                                col += 5;
@@ -1086,6 +1259,27 @@ void GenericCAO::updateTexturePos()
                float tys = m_tx_size.Y;
                setBillboardTextureMatrix(m_spritenode, txs, tys, col, row);
        }
+
+       else if (m_meshnode) {
+               if (m_prop.visual == "upright_sprite") {
+                       int row = m_tx_basepos.Y;
+                       int col = m_tx_basepos.X;
+
+                       // Animation goes downwards
+                       row += m_anim_frame;
+
+                       const auto &tx = m_tx_size;
+                       v2f t[4] = { // cf. vertices in GenericCAO::addToScene()
+                               tx * v2f(col+1, row+1),
+                               tx * v2f(col, row+1),
+                               tx * v2f(col, row),
+                               tx * v2f(col+1, row),
+                       };
+                       auto mesh = m_meshnode->getMesh();
+                       setMeshBufferTextureCoords(mesh->getMeshBuffer(0), t, 4);
+                       setMeshBufferTextureCoords(mesh->getMeshBuffer(1), t, 4);
+               }
+       }
 }
 
 // Do not pass by reference, see header.
@@ -1101,16 +1295,13 @@ void GenericCAO::updateTextures(std::string mod)
        m_current_texture_modifier = mod;
        m_glow = m_prop.glow;
 
-       video::E_MATERIAL_TYPE material_type = (m_prop.use_texture_alpha) ?
-               video::EMT_TRANSPARENT_ALPHA_CHANNEL : video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF;
-
        if (m_spritenode) {
                if (m_prop.visual == "sprite") {
                        std::string texturestring = "unknown_node.png";
                        if (!m_prop.textures.empty())
                                texturestring = m_prop.textures[0];
                        texturestring += mod;
-                       m_spritenode->getMaterial(0).MaterialType = material_type;
+                       m_spritenode->getMaterial(0).MaterialType = m_material_type;
                        m_spritenode->getMaterial(0).MaterialTypeParam = 0.5f;
                        m_spritenode->setMaterialTexture(0,
                                        tsrc->getTextureForMesh(texturestring));
@@ -1130,7 +1321,7 @@ void GenericCAO::updateTextures(std::string mod)
                }
        }
 
-       if (m_animated_meshnode) {
+       else if (m_animated_meshnode) {
                if (m_prop.visual == "mesh") {
                        for (u32 i = 0; i < m_prop.textures.size() &&
                                        i < m_animated_meshnode->getMaterialCount(); ++i) {
@@ -1146,7 +1337,7 @@ void GenericCAO::updateTextures(std::string mod)
 
                                // Set material flags and texture
                                video::SMaterial& material = m_animated_meshnode->getMaterial(i);
-                               material.MaterialType = material_type;
+                               material.MaterialType = m_material_type;
                                material.MaterialTypeParam = 0.5f;
                                material.TextureLayer[0].Texture = texture;
                                material.setFlag(video::EMF_LIGHTING, true);
@@ -1179,8 +1370,8 @@ void GenericCAO::updateTextures(std::string mod)
                        }
                }
        }
-       if(m_meshnode)
-       {
+
+       else if (m_meshnode) {
                if(m_prop.visual == "cube")
                {
                        for (u32 i = 0; i < 6; ++i)
@@ -1193,7 +1384,7 @@ void GenericCAO::updateTextures(std::string mod)
 
                                // Set material flags and texture
                                video::SMaterial& material = m_meshnode->getMaterial(i);
-                               material.MaterialType = material_type;
+                               material.MaterialType = m_material_type;
                                material.MaterialTypeParam = 0.5f;
                                material.setFlag(video::EMF_LIGHTING, false);
                                material.setFlag(video::EMF_BILINEAR_FILTER, false);
@@ -1272,6 +1463,9 @@ void GenericCAO::updateTextures(std::string mod)
                                setMeshColor(mesh, m_prop.colors[0]);
                }
        }
+       // Prevent showing the player after changing texture
+       if (m_is_local_player)
+               updateMeshCulling();
 }
 
 void GenericCAO::updateAnimation()
@@ -1306,16 +1500,53 @@ void GenericCAO::updateBonePosition()
                return;
 
        m_animated_meshnode->setJointMode(irr::scene::EJUOR_CONTROL); // To write positions to the mesh on render
-       for(std::unordered_map<std::string, core::vector2d<v3f>>::const_iterator
-                       ii = m_bone_position.begin(); ii != m_bone_position.end(); ++ii) {
-               std::string bone_name = (*ii).first;
-               v3f bone_pos = (*ii).second.X;
-               v3f bone_rot = (*ii).second.Y;
+       for (auto &it : m_bone_position) {
+               std::string bone_name = it.first;
                irr::scene::IBoneSceneNode* bone = m_animated_meshnode->getJointNode(bone_name.c_str());
-               if(bone)
-               {
-                       bone->setPosition(bone_pos);
+               if (bone) {
+                       bone->setPosition(it.second.X);
+                       bone->setRotation(it.second.Y);
+               }
+       }
+
+       // search through bones to find mistakenly rotated bones due to bug in Irrlicht
+       for (u32 i = 0; i < m_animated_meshnode->getJointCount(); ++i) {
+               irr::scene::IBoneSceneNode *bone = m_animated_meshnode->getJointNode(i);
+               if (!bone)
+                       continue;
+
+               //If bone is manually positioned there is no need to perform the bug check
+               bool skip = false;
+               for (auto &it : m_bone_position) {
+                       if (it.first == bone->getName()) {
+                               skip = true;
+                               break;
+                       }
+               }
+               if (skip)
+                       continue;
+
+               // Workaround for Irrlicht bug
+               // We check each bone to see if it has been rotated ~180deg from its expected position due to a bug in Irricht
+               // when using EJUOR_CONTROL joint control. If the bug is detected we update the bone to the proper position
+               // and update the bones transformation.
+               v3f bone_rot = bone->getRelativeTransformation().getRotationDegrees();
+               float offset = fabsf(bone_rot.X - bone->getRotation().X);
+               if (offset > 179.9f && offset < 180.1f) {
                        bone->setRotation(bone_rot);
+                       bone->updateAbsolutePosition();
+               }
+       }
+       // The following is needed for set_bone_pos to propagate to
+       // attached objects correctly.
+       // Irrlicht ought to do this, but doesn't when using EJUOR_CONTROL.
+       for (u32 i = 0; i < m_animated_meshnode->getJointCount(); ++i) {
+               auto bone = m_animated_meshnode->getJointNode(i);
+               // Look for the root bone.
+               if (bone && bone->getParent() == m_animated_meshnode) {
+                       // Update entire skeleton.
+                       bone->updateAbsolutePositionOfAllChildren();
+                       break;
                }
        }
 }
@@ -1340,15 +1571,17 @@ void GenericCAO::updateAttachments()
 
        if (!parent) { // Detach or don't attach
                if (m_matrixnode) {
+                       v3s16 camera_offset = m_env->getCameraOffset();
                        v3f old_pos = getPosition();
 
                        m_matrixnode->setParent(m_smgr->getRootSceneNode());
-                       getPosRotMatrix().setTranslation(old_pos);
+                       getPosRotMatrix().setTranslation(old_pos - intToFloat(camera_offset, BS));
                        m_matrixnode->updateAbsolutePosition();
                }
        }
        else // Attach
        {
+               parent->updateAttachments();
                scene::ISceneNode *parent_node = parent->getSceneNode();
                scene::IAnimatedMeshSceneNode *parent_animated_mesh_node =
                                parent->getAnimatedMeshSceneNode();
@@ -1358,6 +1591,7 @@ void GenericCAO::updateAttachments()
 
                if (m_matrixnode && parent_node) {
                        m_matrixnode->setParent(parent_node);
+                       parent_node->updateAbsolutePosition();
                        getPosRotMatrix().setTranslation(m_attachment_position);
                        //setPitchYawRoll(getPosRotMatrix(), m_attachment_rotation);
                        // use Irrlicht eulers instead
@@ -1367,21 +1601,57 @@ void GenericCAO::updateAttachments()
        }
 }
 
+bool GenericCAO::visualExpiryRequired(const ObjectProperties &new_) const
+{
+       const ObjectProperties &old = m_prop;
+       /* Visuals do not need to be expired for:
+        * - nametag props: handled by updateNametag()
+        * - textures:      handled by updateTextures()
+        * - sprite props:  handled by updateTexturePos()
+        * - glow:          handled by updateLight()
+        * - any other properties that do not change appearance
+        */
+
+       bool uses_legacy_texture = new_.wield_item.empty() &&
+               (new_.visual == "wielditem" || new_.visual == "item");
+       // Ordered to compare primitive types before std::vectors
+       return old.backface_culling != new_.backface_culling ||
+               old.is_visible != new_.is_visible ||
+               old.mesh != new_.mesh ||
+               old.shaded != new_.shaded ||
+               old.use_texture_alpha != new_.use_texture_alpha ||
+               old.visual != new_.visual ||
+               old.visual_size != new_.visual_size ||
+               old.wield_item != new_.wield_item ||
+               old.colors != new_.colors ||
+               (uses_legacy_texture && old.textures != new_.textures);
+}
+
 void GenericCAO::processMessage(const std::string &data)
 {
        //infostream<<"GenericCAO: Got message"<<std::endl;
        std::istringstream is(data, std::ios::binary);
        // command
        u8 cmd = readU8(is);
-       if (cmd == GENERIC_CMD_SET_PROPERTIES) {
-               m_prop = gob_read_set_properties(is);
+       if (cmd == AO_CMD_SET_PROPERTIES) {
+               ObjectProperties newprops;
+               newprops.show_on_minimap = m_is_player; // default
+
+               newprops.deSerialize(is);
+
+               // Check what exactly changed
+               bool expire_visuals = visualExpiryRequired(newprops);
+               bool textures_changed = m_prop.textures != newprops.textures;
+
+               // Apply changes
+               m_prop = std::move(newprops);
 
                m_selection_box = m_prop.selectionbox;
                m_selection_box.MinEdge *= BS;
                m_selection_box.MaxEdge *= BS;
 
-               m_tx_size.X = 1.0 / m_prop.spritediv.X;
-               m_tx_size.Y = 1.0 / m_prop.spritediv.Y;
+               m_tx_size.X = 1.0f / m_prop.spritediv.X;
+               m_tx_size.Y = 1.0f / m_prop.spritediv.Y;
 
                if(!m_initial_tx_basepos_set){
                        m_initial_tx_basepos_set = true;
@@ -1400,19 +1670,29 @@ void GenericCAO::processMessage(const std::string &data)
 
                if ((m_is_player && !m_is_local_player) && m_prop.nametag.empty())
                        m_prop.nametag = m_name;
+               if (m_is_local_player)
+                       m_prop.show_on_minimap = false;
 
-               expireVisuals();
-       } else if (cmd == GENERIC_CMD_UPDATE_POSITION) {
+               if (expire_visuals) {
+                       expireVisuals();
+               } else {
+                       infostream << "GenericCAO: properties updated but expiring visuals"
+                               << " not necessary" << std::endl;
+                       if (textures_changed) {
+                               // don't update while punch texture modifier is active
+                               if (m_reset_textures_timer < 0)
+                                       updateTextures(m_current_texture_modifier);
+                       }
+                       updateNametag();
+                       updateMarker();
+               }
+       } else if (cmd == AO_CMD_UPDATE_POSITION) {
                // Not sent by the server if this object is an attachment.
                // We might however get here if the server notices the object being detached before the client.
                m_position = readV3F32(is);
                m_velocity = readV3F32(is);
                m_acceleration = readV3F32(is);
-
-               if (std::fabs(m_prop.automatic_rotate) < 0.001f)
-                       m_rotation = readV3F32(is);
-               else
-                       readV3F32(is);
+               m_rotation = readV3F32(is);
 
                m_rotation = wrapDegrees_0_360_v3f(m_rotation);
                bool do_interpolate = readU8(is);
@@ -1436,16 +1716,16 @@ void GenericCAO::processMessage(const std::string &data)
                }
                rot_translator.update(m_rotation, false, update_interval);
                updateNodePos();
-       } else if (cmd == GENERIC_CMD_SET_TEXTURE_MOD) {
-               std::string mod = deSerializeString(is);
+       } else if (cmd == AO_CMD_SET_TEXTURE_MOD) {
+               std::string mod = deSerializeString16(is);
 
-               // immediatly reset a engine issued texture modifier if a mod sends a different one
+               // immediately reset a engine issued texture modifier if a mod sends a different one
                if (m_reset_textures_timer > 0) {
                        m_reset_textures_timer = -1;
                        updateTextures(m_previous_texture_modifier);
                }
                updateTextures(mod);
-       } else if (cmd == GENERIC_CMD_SET_SPRITE) {
+       } else if (cmd == AO_CMD_SET_SPRITE) {
                v2s16 p = readV2S16(is);
                int num_frames = readU16(is);
                float framelength = readF32(is);
@@ -1457,7 +1737,7 @@ void GenericCAO::processMessage(const std::string &data)
                m_tx_select_horiz_by_yawpitch = select_horiz_by_yawpitch;
 
                updateTexturePos();
-       } else if (cmd == GENERIC_CMD_SET_PHYSICS_OVERRIDE) {
+       } else if (cmd == AO_CMD_SET_PHYSICS_OVERRIDE) {
                float override_speed = readF32(is);
                float override_jump = readF32(is);
                float override_gravity = readF32(is);
@@ -1469,6 +1749,11 @@ void GenericCAO::processMessage(const std::string &data)
 
                if(m_is_local_player)
                {
+                       Client *client = m_env->getGameDef();
+                       
+                       if (client->modsLoaded() && client->getScript()->on_recieve_physics_override(override_speed, override_jump, override_gravity, sneak, sneak_glitch, new_move))
+                               return;
+                       
                        LocalPlayer *player = m_env->getLocalPlayer();
                        player->physics_override_speed = override_speed;
                        player->physics_override_jump = override_jump;
@@ -1477,7 +1762,7 @@ void GenericCAO::processMessage(const std::string &data)
                        player->physics_override_sneak_glitch = sneak_glitch;
                        player->physics_override_new_move = new_move;
                }
-       } else if (cmd == GENERIC_CMD_SET_ANIMATION) {
+       } else if (cmd == AO_CMD_SET_ANIMATION) {
                // TODO: change frames send as v2s32 value
                v2f range = readV2F32(is);
                if (!m_is_local_player) {
@@ -1511,28 +1796,25 @@ void GenericCAO::processMessage(const std::string &data)
                                        updateAnimation();
                        }
                }
-       } else if (cmd == GENERIC_CMD_SET_ANIMATION_SPEED) {
+       } else if (cmd == AO_CMD_SET_ANIMATION_SPEED) {
                m_animation_speed = readF32(is);
                updateAnimationSpeed();
-       } else if (cmd == GENERIC_CMD_SET_BONE_POSITION) {
-               std::string bone = deSerializeString(is);
+       } else if (cmd == AO_CMD_SET_BONE_POSITION) {
+               std::string bone = deSerializeString16(is);
                v3f position = readV3F32(is);
                v3f rotation = readV3F32(is);
                m_bone_position[bone] = core::vector2d<v3f>(position, rotation);
 
-               updateBonePosition();
-       } else if (cmd == GENERIC_CMD_ATTACH_TO) {
+               // updateBonePosition(); now called every step
+       } else if (cmd == AO_CMD_ATTACH_TO) {
                u16 parent_id = readS16(is);
-               std::string bone = deSerializeString(is);
+               std::string bone = deSerializeString16(is);
                v3f position = readV3F32(is);
                v3f rotation = readV3F32(is);
+               bool force_visible = readU8(is); // Returns false for EOF
 
-               setAttachment(parent_id, bone, position, rotation);
-
-               // localplayer itself can't be attached to localplayer
-               if (!m_is_local_player)
-                       m_is_visible = !m_attached_to_local;
-       } else if (cmd == GENERIC_CMD_PUNCHED) {
+               setAttachment(parent_id, bone, position, rotation, force_visible);
+       } else if (cmd == AO_CMD_PUNCHED) {
                u16 result_hp = readU16(is);
 
                // Use this instead of the send damage to not interfere with prediction
@@ -1553,13 +1835,11 @@ void GenericCAO::processMessage(const std::string &data)
                                                m_smgr, m_env, m_position,
                                                v2f(m_prop.visual_size.X, m_prop.visual_size.Y) * BS);
                                m_env->addSimpleObject(simple);
-                       } else if (m_reset_textures_timer < 0) {
-                               // TODO: Execute defined fast response
-                               // Flashing shall suffice as there is no definition
+                       } else if (m_reset_textures_timer < 0 && !m_prop.damage_texture_modifier.empty()) {
                                m_reset_textures_timer = 0.05;
                                if(damage >= 2)
                                        m_reset_textures_timer += 0.05 * damage;
-                               updateTextures(m_current_texture_modifier + "^[brighten");
+                               updateTextures(m_current_texture_modifier + m_prop.damage_texture_modifier);
                        }
                }
 
@@ -1570,31 +1850,23 @@ void GenericCAO::processMessage(const std::string &data)
                        if (!m_is_player)
                                clearChildAttachments();
                }
-       } else if (cmd == GENERIC_CMD_UPDATE_ARMOR_GROUPS) {
+       } else if (cmd == AO_CMD_UPDATE_ARMOR_GROUPS) {
                m_armor_groups.clear();
                int armor_groups_size = readU16(is);
                for(int i=0; i<armor_groups_size; i++)
                {
-                       std::string name = deSerializeString(is);
+                       std::string name = deSerializeString16(is);
                        int rating = readS16(is);
                        m_armor_groups[name] = rating;
                }
-       } else if (cmd == GENERIC_CMD_UPDATE_NAMETAG_ATTRIBUTES) {
-               // Deprecated, for backwards compatibility only.
-               readU8(is); // version
-               m_prop.nametag_color = readARGB8(is);
-               if (m_nametag != NULL) {
-                       m_nametag->nametag_color = m_prop.nametag_color;
-                       v3f pos;
-                       pos.Y = m_prop.collisionbox.MaxEdge.Y + 0.3f;
-                       m_nametag->nametag_pos = pos;
-               }
-       } else if (cmd == GENERIC_CMD_SPAWN_INFANT) {
+       } else if (cmd == AO_CMD_SPAWN_INFANT) {
                u16 child_id = readU16(is);
                u8 type = readU8(is); // maybe this will be useful later
                (void)type;
 
                addAttachmentChild(child_id);
+       } else if (cmd == AO_CMD_OBSOLETE1) {
+               // Don't do anything and also don't log a warning
        } else {
                warningstream << FUNCTION_NAME
                        << ": unknown command or outdated client \""
@@ -1630,13 +1902,11 @@ bool GenericCAO::directReportPunch(v3f dir, const ItemStack *punchitem,
                                        v2f(m_prop.visual_size.X, m_prop.visual_size.Y) * BS);
                        m_env->addSimpleObject(simple);
                }
-               // TODO: Execute defined fast response
-               // Flashing shall suffice as there is no definition
-               if (m_reset_textures_timer < 0) {
+               if (m_reset_textures_timer < 0 && !m_prop.damage_texture_modifier.empty()) {
                        m_reset_textures_timer = 0.05;
                        if (result.damage >= 2)
                                m_reset_textures_timer += 0.05 * result.damage;
-                       updateTextures(m_current_texture_modifier + "^[brighten");
+                       updateTextures(m_current_texture_modifier + m_prop.damage_texture_modifier);
                }
        }
 
@@ -1657,5 +1927,43 @@ std::string GenericCAO::debugInfoText()
        return os.str();
 }
 
+void GenericCAO::updateMeshCulling()
+{
+       if (!m_is_local_player)
+               return;
+
+       const bool hidden = m_client->getCamera()->getCameraMode() == CAMERA_MODE_FIRST && ! g_settings->getBool("freecam");
+
+       if (m_meshnode && m_prop.visual == "upright_sprite") {
+               u32 buffers = m_meshnode->getMesh()->getMeshBufferCount();
+               for (u32 i = 0; i < buffers; i++) {
+                       video::SMaterial &mat = m_meshnode->getMesh()->getMeshBuffer(i)->getMaterial();
+                       // upright sprite has no backface culling
+                       mat.setFlag(video::EMF_FRONT_FACE_CULLING, hidden);
+               }
+               return;
+       }
+
+       irr::scene::ISceneNode *node = getSceneNode();
+       if (!node)
+               return;
+
+       if (hidden) {
+               // Hide the mesh by culling both front and
+               // back faces. Serious hackyness but it works for our
+               // purposes. This also preserves the skeletal armature.
+               node->setMaterialFlag(video::EMF_BACK_FACE_CULLING,
+                       true);
+               node->setMaterialFlag(video::EMF_FRONT_FACE_CULLING,
+                       true);
+       } else {
+               // Restore mesh visibility.
+               node->setMaterialFlag(video::EMF_BACK_FACE_CULLING,
+                       m_prop.backface_culling);
+               node->setMaterialFlag(video::EMF_FRONT_FACE_CULLING,
+                       false);
+       }
+}
+
 // Prototype
 GenericCAO proto_GenericCAO(NULL, NULL);