Move client-specific files to 'src/client' (#7902)

Update Android.mk
Remove 'src/client' from include_directories

1 files changed, 685 insertions, 0 deletions

diff --git a/src/client/wieldmesh.cpp b/src/client/wieldmesh.cpp
new file mode 100644
index 000000000..7791a5a92
--- /dev/null
+++ b/src/client/wieldmesh.cpp
@@ -0,0 +1,685 @@
+/*
+Minetest
+Copyright (C) 2010-2014 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#include "wieldmesh.h"
+#include "settings.h"
+#include "shader.h"
+#include "inventory.h"
+#include "client.h"
+#include "itemdef.h"
+#include "nodedef.h"
+#include "mesh.h"
+#include "content_mapblock.h"
+#include "mapblock_mesh.h"
+#include "client/meshgen/collector.h"
+#include "client/tile.h"
+#include "log.h"
+#include "util/numeric.h"
+#include <map>
+#include <IMeshManipulator.h>
+
+#define WIELD_SCALE_FACTOR 30.0
+#define WIELD_SCALE_FACTOR_EXTRUDED 40.0
+
+#define MIN_EXTRUSION_MESH_RESOLUTION 16
+#define MAX_EXTRUSION_MESH_RESOLUTION 512
+
+static scene::IMesh *createExtrusionMesh(int resolution_x, int resolution_y)
+{
+	const f32 r = 0.5;
+
+	scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+	video::SColor c(255,255,255,255);
+	v3f scale(1.0, 1.0, 0.1);
+
+	// Front and back
+	{
+		video::S3DVertex vertices[8] = {
+			// z-
+			video::S3DVertex(-r,+r,-r, 0,0,-1, c, 0,0),
+			video::S3DVertex(+r,+r,-r, 0,0,-1, c, 1,0),
+			video::S3DVertex(+r,-r,-r, 0,0,-1, c, 1,1),
+			video::S3DVertex(-r,-r,-r, 0,0,-1, c, 0,1),
+			// z+
+			video::S3DVertex(-r,+r,+r, 0,0,+1, c, 0,0),
+			video::S3DVertex(-r,-r,+r, 0,0,+1, c, 0,1),
+			video::S3DVertex(+r,-r,+r, 0,0,+1, c, 1,1),
+			video::S3DVertex(+r,+r,+r, 0,0,+1, c, 1,0),
+		};
+		u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
+		buf->append(vertices, 8, indices, 12);
+	}
+
+	f32 pixelsize_x = 1 / (f32) resolution_x;
+	f32 pixelsize_y = 1 / (f32) resolution_y;
+
+	for (int i = 0; i < resolution_x; ++i) {
+		f32 pixelpos_x = i * pixelsize_x - 0.5;
+		f32 x0 = pixelpos_x;
+		f32 x1 = pixelpos_x + pixelsize_x;
+		f32 tex0 = (i + 0.1) * pixelsize_x;
+		f32 tex1 = (i + 0.9) * pixelsize_x;
+		video::S3DVertex vertices[8] = {
+			// x-
+			video::S3DVertex(x0,-r,-r, -1,0,0, c, tex0,1),
+			video::S3DVertex(x0,-r,+r, -1,0,0, c, tex1,1),
+			video::S3DVertex(x0,+r,+r, -1,0,0, c, tex1,0),
+			video::S3DVertex(x0,+r,-r, -1,0,0, c, tex0,0),
+			// x+
+			video::S3DVertex(x1,-r,-r, +1,0,0, c, tex0,1),
+			video::S3DVertex(x1,+r,-r, +1,0,0, c, tex0,0),
+			video::S3DVertex(x1,+r,+r, +1,0,0, c, tex1,0),
+			video::S3DVertex(x1,-r,+r, +1,0,0, c, tex1,1),
+		};
+		u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
+		buf->append(vertices, 8, indices, 12);
+	}
+	for (int i = 0; i < resolution_y; ++i) {
+		f32 pixelpos_y = i * pixelsize_y - 0.5;
+		f32 y0 = -pixelpos_y - pixelsize_y;
+		f32 y1 = -pixelpos_y;
+		f32 tex0 = (i + 0.1) * pixelsize_y;
+		f32 tex1 = (i + 0.9) * pixelsize_y;
+		video::S3DVertex vertices[8] = {
+			// y-
+			video::S3DVertex(-r,y0,-r, 0,-1,0, c, 0,tex0),
+			video::S3DVertex(+r,y0,-r, 0,-1,0, c, 1,tex0),
+			video::S3DVertex(+r,y0,+r, 0,-1,0, c, 1,tex1),
+			video::S3DVertex(-r,y0,+r, 0,-1,0, c, 0,tex1),
+			// y+
+			video::S3DVertex(-r,y1,-r, 0,+1,0, c, 0,tex0),
+			video::S3DVertex(-r,y1,+r, 0,+1,0, c, 0,tex1),
+			video::S3DVertex(+r,y1,+r, 0,+1,0, c, 1,tex1),
+			video::S3DVertex(+r,y1,-r, 0,+1,0, c, 1,tex0),
+		};
+		u16 indices[12] = {0,1,2,2,3,0,4,5,6,6,7,4};
+		buf->append(vertices, 8, indices, 12);
+	}
+
+	// Create mesh object
+	scene::SMesh *mesh = new scene::SMesh();
+	mesh->addMeshBuffer(buf);
+	buf->drop();
+	scaleMesh(mesh, scale);  // also recalculates bounding box
+	return mesh;
+}
+
+/*
+	Caches extrusion meshes so that only one of them per resolution
+	is needed. Also caches one cube (for convenience).
+
+	E.g. there is a single extrusion mesh that is used for all
+	16x16 px images, another for all 256x256 px images, and so on.
+
+	WARNING: Not thread safe. This should not be a problem since
+	rendering related classes (such as WieldMeshSceneNode) will be
+	used from the rendering thread only.
+*/
+class ExtrusionMeshCache: public IReferenceCounted
+{
+public:
+	// Constructor
+	ExtrusionMeshCache()
+	{
+		for (int resolution = MIN_EXTRUSION_MESH_RESOLUTION;
+				resolution <= MAX_EXTRUSION_MESH_RESOLUTION;
+				resolution *= 2) {
+			m_extrusion_meshes[resolution] =
+				createExtrusionMesh(resolution, resolution);
+		}
+		m_cube = createCubeMesh(v3f(1.0, 1.0, 1.0));
+	}
+	// Destructor
+	virtual ~ExtrusionMeshCache()
+	{
+		for (auto &extrusion_meshe : m_extrusion_meshes) {
+			extrusion_meshe.second->drop();
+		}
+		m_cube->drop();
+	}
+	// Get closest extrusion mesh for given image dimensions
+	// Caller must drop the returned pointer
+	scene::IMesh* create(core::dimension2d<u32> dim)
+	{
+		// handle non-power of two textures inefficiently without cache
+		if (!is_power_of_two(dim.Width) || !is_power_of_two(dim.Height)) {
+			return createExtrusionMesh(dim.Width, dim.Height);
+		}
+
+		int maxdim = MYMAX(dim.Width, dim.Height);
+
+		std::map<int, scene::IMesh*>::iterator
+			it = m_extrusion_meshes.lower_bound(maxdim);
+
+		if (it == m_extrusion_meshes.end()) {
+			// no viable resolution found; use largest one
+			it = m_extrusion_meshes.find(MAX_EXTRUSION_MESH_RESOLUTION);
+			sanity_check(it != m_extrusion_meshes.end());
+		}
+
+		scene::IMesh *mesh = it->second;
+		mesh->grab();
+		return mesh;
+	}
+	// Returns a 1x1x1 cube mesh with one meshbuffer (material) per face
+	// Caller must drop the returned pointer
+	scene::IMesh* createCube()
+	{
+		m_cube->grab();
+		return m_cube;
+	}
+
+private:
+	std::map<int, scene::IMesh*> m_extrusion_meshes;
+	scene::IMesh *m_cube;
+};
+
+ExtrusionMeshCache *g_extrusion_mesh_cache = NULL;
+
+
+WieldMeshSceneNode::WieldMeshSceneNode(scene::ISceneManager *mgr, s32 id, bool lighting):
+	scene::ISceneNode(mgr->getRootSceneNode(), mgr, id),
+	m_material_type(video::EMT_TRANSPARENT_ALPHA_CHANNEL_REF),
+	m_lighting(lighting)
+{
+	m_enable_shaders = g_settings->getBool("enable_shaders");
+	m_anisotropic_filter = g_settings->getBool("anisotropic_filter");
+	m_bilinear_filter = g_settings->getBool("bilinear_filter");
+	m_trilinear_filter = g_settings->getBool("trilinear_filter");
+
+	// If this is the first wield mesh scene node, create a cache
+	// for extrusion meshes (and a cube mesh), otherwise reuse it
+	if (!g_extrusion_mesh_cache)
+		g_extrusion_mesh_cache = new ExtrusionMeshCache();
+	else
+		g_extrusion_mesh_cache->grab();
+
+	// Disable bounding box culling for this scene node
+	// since we won't calculate the bounding box.
+	setAutomaticCulling(scene::EAC_OFF);
+
+	// Create the child scene node
+	scene::IMesh *dummymesh = g_extrusion_mesh_cache->createCube();
+	m_meshnode = SceneManager->addMeshSceneNode(dummymesh, this, -1);
+	m_meshnode->setReadOnlyMaterials(false);
+	m_meshnode->setVisible(false);
+	dummymesh->drop(); // m_meshnode grabbed it
+}
+
+WieldMeshSceneNode::~WieldMeshSceneNode()
+{
+	sanity_check(g_extrusion_mesh_cache);
+	if (g_extrusion_mesh_cache->drop())
+		g_extrusion_mesh_cache = nullptr;
+}
+
+void WieldMeshSceneNode::setCube(const ContentFeatures &f,
+			v3f wield_scale)
+{
+	scene::IMesh *cubemesh = g_extrusion_mesh_cache->createCube();
+	scene::SMesh *copy = cloneMesh(cubemesh);
+	cubemesh->drop();
+	postProcessNodeMesh(copy, f, false, true, &m_material_type, &m_colors, true);
+	changeToMesh(copy);
+	copy->drop();
+	m_meshnode->setScale(wield_scale * WIELD_SCALE_FACTOR);
+}
+
+void WieldMeshSceneNode::setExtruded(const std::string &imagename,
+	const std::string &overlay_name, v3f wield_scale, ITextureSource *tsrc,
+	u8 num_frames)
+{
+	video::ITexture *texture = tsrc->getTexture(imagename);
+	if (!texture) {
+		changeToMesh(nullptr);
+		return;
+	}
+	video::ITexture *overlay_texture =
+		overlay_name.empty() ? NULL : tsrc->getTexture(overlay_name);
+
+	core::dimension2d<u32> dim = texture->getSize();
+	// Detect animation texture and pull off top frame instead of using entire thing
+	if (num_frames > 1) {
+		u32 frame_height = dim.Height / num_frames;
+		dim = core::dimension2d<u32>(dim.Width, frame_height);
+	}
+	scene::IMesh *original = g_extrusion_mesh_cache->create(dim);
+	scene::SMesh *mesh = cloneMesh(original);
+	original->drop();
+	//set texture
+	mesh->getMeshBuffer(0)->getMaterial().setTexture(0,
+		tsrc->getTexture(imagename));
+	if (overlay_texture) {
+		scene::IMeshBuffer *copy = cloneMeshBuffer(mesh->getMeshBuffer(0));
+		copy->getMaterial().setTexture(0, overlay_texture);
+		mesh->addMeshBuffer(copy);
+		copy->drop();
+	}
+	changeToMesh(mesh);
+	mesh->drop();
+
+	m_meshnode->setScale(wield_scale * WIELD_SCALE_FACTOR_EXTRUDED);
+
+	// Customize materials
+	for (u32 layer = 0; layer < m_meshnode->getMaterialCount(); layer++) {
+		video::SMaterial &material = m_meshnode->getMaterial(layer);
+		material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
+		material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
+		material.MaterialType = m_material_type;
+		material.setFlag(video::EMF_BACK_FACE_CULLING, true);
+		// Enable bi/trilinear filtering only for high resolution textures
+		if (dim.Width > 32) {
+			material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
+			material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
+		} else {
+			material.setFlag(video::EMF_BILINEAR_FILTER, false);
+			material.setFlag(video::EMF_TRILINEAR_FILTER, false);
+		}
+		material.setFlag(video::EMF_ANISOTROPIC_FILTER, m_anisotropic_filter);
+		// mipmaps cause "thin black line" artifacts
+#if (IRRLICHT_VERSION_MAJOR >= 1 && IRRLICHT_VERSION_MINOR >= 8) || IRRLICHT_VERSION_MAJOR >= 2
+		material.setFlag(video::EMF_USE_MIP_MAPS, false);
+#endif
+		if (m_enable_shaders) {
+			material.setTexture(2, tsrc->getShaderFlagsTexture(false));
+		}
+	}
+}
+
+scene::SMesh *createSpecialNodeMesh(Client *client, content_t id, std::vector<ItemPartColor> *colors)
+{
+	MeshMakeData mesh_make_data(client, false, false);
+	MeshCollector collector;
+	mesh_make_data.setSmoothLighting(false);
+	MapblockMeshGenerator gen(&mesh_make_data, &collector);
+	gen.renderSingle(id);
+	colors->clear();
+	scene::SMesh *mesh = new scene::SMesh();
+	for (auto &prebuffers : collector.prebuffers)
+		for (PreMeshBuffer &p : prebuffers) {
+			if (p.layer.material_flags & MATERIAL_FLAG_ANIMATION) {
+				const FrameSpec &frame = (*p.layer.frames)[0];
+				p.layer.texture = frame.texture;
+				p.layer.normal_texture = frame.normal_texture;
+			}
+			for (video::S3DVertex &v : p.vertices)
+				v.Color.setAlpha(255);
+			scene::SMeshBuffer *buf = new scene::SMeshBuffer();
+			buf->Material.setTexture(0, p.layer.texture);
+			p.layer.applyMaterialOptions(buf->Material);
+			mesh->addMeshBuffer(buf);
+			buf->append(&p.vertices[0], p.vertices.size(),
+					&p.indices[0], p.indices.size());
+			buf->drop();
+			colors->push_back(
+				ItemPartColor(p.layer.has_color, p.layer.color));
+		}
+	return mesh;
+}
+
+void WieldMeshSceneNode::setItem(const ItemStack &item, Client *client)
+{
+	ITextureSource *tsrc = client->getTextureSource();
+	IItemDefManager *idef = client->getItemDefManager();
+	IShaderSource *shdrsrc = client->getShaderSource();
+	const NodeDefManager *ndef = client->getNodeDefManager();
+	const ItemDefinition &def = item.getDefinition(idef);
+	const ContentFeatures &f = ndef->get(def.name);
+	content_t id = ndef->getId(def.name);
+
+	scene::SMesh *mesh = nullptr;
+
+	if (m_enable_shaders) {
+		u32 shader_id = shdrsrc->getShader("wielded_shader", TILE_MATERIAL_BASIC, NDT_NORMAL);
+		m_material_type = shdrsrc->getShaderInfo(shader_id).material;
+	}
+
+	// Color-related
+	m_colors.clear();
+	m_base_color = idef->getItemstackColor(item, client);
+
+	// If wield_image is defined, it overrides everything else
+	if (!def.wield_image.empty()) {
+		setExtruded(def.wield_image, def.wield_overlay, def.wield_scale, tsrc,
+			1);
+		m_colors.emplace_back();
+		// overlay is white, if present
+		m_colors.emplace_back(true, video::SColor(0xFFFFFFFF));
+		return;
+	}
+
+	// Handle nodes
+	// See also CItemDefManager::createClientCached()
+	if (def.type == ITEM_NODE) {
+		if (f.mesh_ptr[0]) {
+			// e.g. mesh nodes and nodeboxes
+			mesh = cloneMesh(f.mesh_ptr[0]);
+			postProcessNodeMesh(mesh, f, m_enable_shaders, true,
+				&m_material_type, &m_colors);
+			changeToMesh(mesh);
+			mesh->drop();
+			// mesh is pre-scaled by BS * f->visual_scale
+			m_meshnode->setScale(
+					def.wield_scale * WIELD_SCALE_FACTOR
+					/ (BS * f.visual_scale));
+		} else {
+			switch (f.drawtype) {
+				case NDT_AIRLIKE: {
+					changeToMesh(nullptr);
+					break;
+				}
+				case NDT_PLANTLIKE: {
+					setExtruded(tsrc->getTextureName(f.tiles[0].layers[0].texture_id),
+						tsrc->getTextureName(f.tiles[0].layers[1].texture_id),
+						def.wield_scale, tsrc,
+						f.tiles[0].layers[0].animation_frame_count);
+					// Add color
+					const TileLayer &l0 = f.tiles[0].layers[0];
+					m_colors.emplace_back(l0.has_color, l0.color);
+					const TileLayer &l1 = f.tiles[0].layers[1];
+					m_colors.emplace_back(l1.has_color, l1.color);
+					break;
+				}
+				case NDT_PLANTLIKE_ROOTED: {
+					setExtruded(tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id),
+						"", def.wield_scale, tsrc,
+						f.special_tiles[0].layers[0].animation_frame_count);
+					// Add color
+					const TileLayer &l0 = f.special_tiles[0].layers[0];
+					m_colors.emplace_back(l0.has_color, l0.color);
+					break;
+				}
+				case NDT_NORMAL:
+				case NDT_ALLFACES:
+				case NDT_LIQUID:
+				case NDT_FLOWINGLIQUID: {
+					setCube(f, def.wield_scale);
+					break;
+				}
+				default: {
+					mesh = createSpecialNodeMesh(client, id, &m_colors);
+					changeToMesh(mesh);
+					mesh->drop();
+					m_meshnode->setScale(
+							def.wield_scale * WIELD_SCALE_FACTOR
+							/ (BS * f.visual_scale));
+				}
+			}
+		}
+		u32 material_count = m_meshnode->getMaterialCount();
+		for (u32 i = 0; i < material_count; ++i) {
+			video::SMaterial &material = m_meshnode->getMaterial(i);
+			material.MaterialType = m_material_type;
+			material.setFlag(video::EMF_BACK_FACE_CULLING, true);
+			material.setFlag(video::EMF_BILINEAR_FILTER, m_bilinear_filter);
+			material.setFlag(video::EMF_TRILINEAR_FILTER, m_trilinear_filter);
+		}
+		return;
+	}
+	else if (!def.inventory_image.empty()) {
+		setExtruded(def.inventory_image, def.inventory_overlay, def.wield_scale,
+			tsrc, 1);
+		m_colors.emplace_back();
+		// overlay is white, if present
+		m_colors.emplace_back(true, video::SColor(0xFFFFFFFF));
+		return;
+	}
+
+	// no wield mesh found
+	changeToMesh(nullptr);
+}
+
+void WieldMeshSceneNode::setColor(video::SColor c)
+{
+	assert(!m_lighting);
+	scene::IMesh *mesh = m_meshnode->getMesh();
+	if (!mesh)
+		return;
+
+	u8 red = c.getRed();
+	u8 green = c.getGreen();
+	u8 blue = c.getBlue();
+	u32 mc = mesh->getMeshBufferCount();
+	for (u32 j = 0; j < mc; j++) {
+		video::SColor bc(m_base_color);
+		if ((m_colors.size() > j) && (m_colors[j].override_base))
+			bc = m_colors[j].color;
+		video::SColor buffercolor(255,
+			bc.getRed() * red / 255,
+			bc.getGreen() * green / 255,
+			bc.getBlue() * blue / 255);
+		scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+		colorizeMeshBuffer(buf, &buffercolor);
+	}
+}
+
+void WieldMeshSceneNode::render()
+{
+	// note: if this method is changed to actually do something,
+	// you probably should implement OnRegisterSceneNode as well
+}
+
+void WieldMeshSceneNode::changeToMesh(scene::IMesh *mesh)
+{
+	if (!mesh) {
+		scene::IMesh *dummymesh = g_extrusion_mesh_cache->createCube();
+		m_meshnode->setVisible(false);
+		m_meshnode->setMesh(dummymesh);
+		dummymesh->drop();  // m_meshnode grabbed it
+	} else {
+		m_meshnode->setMesh(mesh);
+	}
+
+	m_meshnode->setMaterialFlag(video::EMF_LIGHTING, m_lighting);
+	// need to normalize normals when lighting is enabled (because of setScale())
+	m_meshnode->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, m_lighting);
+	m_meshnode->setVisible(true);
+}
+
+void getItemMesh(Client *client, const ItemStack &item, ItemMesh *result)
+{
+	ITextureSource *tsrc = client->getTextureSource();
+	IItemDefManager *idef = client->getItemDefManager();
+	const NodeDefManager *ndef = client->getNodeDefManager();
+	const ItemDefinition &def = item.getDefinition(idef);
+	const ContentFeatures &f = ndef->get(def.name);
+	content_t id = ndef->getId(def.name);
+
+	FATAL_ERROR_IF(!g_extrusion_mesh_cache, "Extrusion mesh cache is not yet initialized");
+	
+	scene::SMesh *mesh = nullptr;
+
+	// Shading is on by default
+	result->needs_shading = true;
+
+	// If inventory_image is defined, it overrides everything else
+	if (!def.inventory_image.empty()) {
+		mesh = getExtrudedMesh(tsrc, def.inventory_image,
+			def.inventory_overlay);
+		result->buffer_colors.emplace_back();
+		// overlay is white, if present
+		result->buffer_colors.emplace_back(true, video::SColor(0xFFFFFFFF));
+		// Items with inventory images do not need shading
+		result->needs_shading = false;
+	} else if (def.type == ITEM_NODE) {
+		if (f.mesh_ptr[0]) {
+			mesh = cloneMesh(f.mesh_ptr[0]);
+			scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
+			postProcessNodeMesh(mesh, f, false, false, nullptr,
+				&result->buffer_colors);
+		} else {
+			switch (f.drawtype) {
+				case NDT_PLANTLIKE: {
+					mesh = getExtrudedMesh(tsrc,
+						tsrc->getTextureName(f.tiles[0].layers[0].texture_id),
+						tsrc->getTextureName(f.tiles[0].layers[1].texture_id));
+					// Add color
+					const TileLayer &l0 = f.tiles[0].layers[0];
+					result->buffer_colors.emplace_back(l0.has_color, l0.color);
+					const TileLayer &l1 = f.tiles[0].layers[1];
+					result->buffer_colors.emplace_back(l1.has_color, l1.color);
+					break;
+				}
+				case NDT_PLANTLIKE_ROOTED: {
+					mesh = getExtrudedMesh(tsrc,
+						tsrc->getTextureName(f.special_tiles[0].layers[0].texture_id), "");
+					// Add color
+					const TileLayer &l0 = f.special_tiles[0].layers[0];
+					result->buffer_colors.emplace_back(l0.has_color, l0.color);
+					break;
+				}
+				case NDT_NORMAL:
+				case NDT_ALLFACES:
+				case NDT_LIQUID:
+				case NDT_FLOWINGLIQUID: {
+					scene::IMesh *cube = g_extrusion_mesh_cache->createCube();
+					mesh = cloneMesh(cube);
+					cube->drop();
+					scaleMesh(mesh, v3f(1.2, 1.2, 1.2));
+					// add overlays
+					postProcessNodeMesh(mesh, f, false, false, nullptr,
+						&result->buffer_colors);
+					break;
+				}
+				default: {
+					mesh = createSpecialNodeMesh(client, id, &result->buffer_colors);
+					scaleMesh(mesh, v3f(0.12, 0.12, 0.12));
+				}
+			}
+		}
+
+		u32 mc = mesh->getMeshBufferCount();
+		for (u32 i = 0; i < mc; ++i) {
+			scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
+			video::SMaterial &material = buf->getMaterial();
+			material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+			material.setFlag(video::EMF_BILINEAR_FILTER, false);
+			material.setFlag(video::EMF_TRILINEAR_FILTER, false);
+			material.setFlag(video::EMF_BACK_FACE_CULLING, true);
+			material.setFlag(video::EMF_LIGHTING, false);
+		}
+
+		rotateMeshXZby(mesh, -45);
+		rotateMeshYZby(mesh, -30);
+	}
+	result->mesh = mesh;
+}
+
+
+
+scene::SMesh *getExtrudedMesh(ITextureSource *tsrc,
+	const std::string &imagename, const std::string &overlay_name)
+{
+	// check textures
+	video::ITexture *texture = tsrc->getTextureForMesh(imagename);
+	if (!texture) {
+		return NULL;
+	}
+	video::ITexture *overlay_texture =
+		(overlay_name.empty()) ? NULL : tsrc->getTexture(overlay_name);
+
+	// get mesh
+	core::dimension2d<u32> dim = texture->getSize();
+	scene::IMesh *original = g_extrusion_mesh_cache->create(dim);
+	scene::SMesh *mesh = cloneMesh(original);
+	original->drop();
+
+	//set texture
+	mesh->getMeshBuffer(0)->getMaterial().setTexture(0,
+		tsrc->getTexture(imagename));
+	if (overlay_texture) {
+		scene::IMeshBuffer *copy = cloneMeshBuffer(mesh->getMeshBuffer(0));
+		copy->getMaterial().setTexture(0, overlay_texture);
+		mesh->addMeshBuffer(copy);
+		copy->drop();
+	}
+	// Customize materials
+	for (u32 layer = 0; layer < mesh->getMeshBufferCount(); layer++) {
+		video::SMaterial &material = mesh->getMeshBuffer(layer)->getMaterial();
+		material.TextureLayer[0].TextureWrapU = video::ETC_CLAMP_TO_EDGE;
+		material.TextureLayer[0].TextureWrapV = video::ETC_CLAMP_TO_EDGE;
+		material.setFlag(video::EMF_BILINEAR_FILTER, false);
+		material.setFlag(video::EMF_TRILINEAR_FILTER, false);
+		material.setFlag(video::EMF_BACK_FACE_CULLING, true);
+		material.setFlag(video::EMF_LIGHTING, false);
+		material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
+	}
+	scaleMesh(mesh, v3f(2.0, 2.0, 2.0));
+
+	return mesh;
+}
+
+void postProcessNodeMesh(scene::SMesh *mesh, const ContentFeatures &f,
+	bool use_shaders, bool set_material, const video::E_MATERIAL_TYPE *mattype,
+	std::vector<ItemPartColor> *colors, bool apply_scale)
+{
+	u32 mc = mesh->getMeshBufferCount();
+	// Allocate colors for existing buffers
+	colors->clear();
+	for (u32 i = 0; i < mc; ++i)
+		colors->push_back(ItemPartColor());
+
+	for (u32 i = 0; i < mc; ++i) {
+		const TileSpec *tile = &(f.tiles[i]);
+		scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
+		for (int layernum = 0; layernum < MAX_TILE_LAYERS; layernum++) {
+			const TileLayer *layer = &tile->layers[layernum];
+			if (layer->texture_id == 0)
+				continue;
+			if (layernum != 0) {
+				scene::IMeshBuffer *copy = cloneMeshBuffer(buf);
+				copy->getMaterial() = buf->getMaterial();
+				mesh->addMeshBuffer(copy);
+				copy->drop();
+				buf = copy;
+				colors->push_back(
+					ItemPartColor(layer->has_color, layer->color));
+			} else {
+				(*colors)[i] = ItemPartColor(layer->has_color, layer->color);
+			}
+			video::SMaterial &material = buf->getMaterial();
+			if (set_material)
+				layer->applyMaterialOptions(material);
+			if (mattype) {
+				material.MaterialType = *mattype;
+			}
+			if (layer->animation_frame_count > 1) {
+				const FrameSpec &animation_frame = (*layer->frames)[0];
+				material.setTexture(0, animation_frame.texture);
+			} else {
+				material.setTexture(0, layer->texture);
+			}
+			if (use_shaders) {
+				if (layer->normal_texture) {
+					if (layer->animation_frame_count > 1) {
+						const FrameSpec &animation_frame = (*layer->frames)[0];
+						material.setTexture(1, animation_frame.normal_texture);
+					} else
+						material.setTexture(1, layer->normal_texture);
+				}
+				material.setTexture(2, layer->flags_texture);
+			}
+			if (apply_scale && tile->world_aligned) {
+				u32 n = buf->getVertexCount();
+				for (u32 k = 0; k != n; ++k)
+					buf->getTCoords(k) /= layer->scale;
+			}
+		}
+	}
+}