Add meshnode drawtype.

doc/lua_api.txt

@@ -103,6 +103,7 @@ mods
 |   |-- screenshot.png
 |   |-- description.txt
 |   |-- init.lua
+|   |-- models
 |   |-- textures
 |   |   |-- modname_stuff.png
 |   |   `-- modname_something_else.png
@@ -137,6 +138,9 @@ init.lua:
   minetest.setting_get(name) and minetest.setting_getbool(name) can be used
   to read custom or existing settings at load time, if necessary.
 
+models:
+	Models for entities or meshnodes.
+
 textures, sounds, media:
   Media files (textures, sounds, whatever) that will be transferred to the
   client and will be available for use by the mod.
@@ -430,6 +434,7 @@ Look for examples in games/minimal or games/minetest_game.
 - fencelike
 - raillike
 - nodebox -- See below. EXPERIMENTAL
+- mesh -- use models for nodes
 
 *_optional drawtypes need less rendering time if deactivated (always client side)
 
@@ -469,6 +474,12 @@ A box of a regular node would look like:
 
 type = "leveled" is same as "fixed", but y2 will be automatically set to level from param2
 
+Meshes
+-----------
+If drawtype "mesh" is used tiles should hold model materials textures.
+Only static meshes are implemented.
+For supported model formats see Irrlicht engine documentation.
+    
 Ore types
 ---------------
 These tell in what manner the ore is generated.
@@ -2405,7 +2416,7 @@ Node definition (register_node)
 
     drawtype = "normal", -- See "Node drawtypes"
     visual_scale = 1.0,
-    ^ Supported for drawtypes "plantlike", "signlike", "torchlike".
+    ^ Supported for drawtypes "plantlike", "signlike", "torchlike", "mesh".
     ^ For plantlike, the image will start at the bottom of the node; for the
     ^ other drawtypes, the image will be centered on the node.
     ^ Note that positioning for "torchlike" may still change.
@@ -2439,6 +2450,7 @@ Node definition (register_node)
     light_source = 0, -- Amount of light emitted by node
     damage_per_second = 0, -- If player is inside node, this damage is caused
     node_box = {type="regular"}, -- See "Node boxes"
+    mesh = "model",
     selection_box = {type="regular"}, -- See "Node boxes"
     ^ If drawtype "nodebox" is used and selection_box is nil, then node_box is used
     legacy_facedir_simple = false, -- Support maps made in and before January 2012

src/client.cpp

@@ -2678,7 +2678,7 @@ void Client::afterContentReceived(IrrlichtDevice *device, gui::IGUIFont* font)
 
 	// Update node textures and assign shaders to each tile
 	infostream<<"- Updating node textures"<<std::endl;
-	m_nodedef->updateTextures(m_tsrc, m_shsrc);
+	m_nodedef->updateTextures(this);
 
 	// Preload item textures and meshes if configured to
 	if(g_settings->getBool("preload_item_visuals"))

src/content_mapblock.cpp

@@ -1715,6 +1715,18 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 				makeCuboid(&collector, box, tiles, 6, c, txc);
 			}
 		break;}
+		case NDT_MESH:
+		{
+			v3f pos = intToFloat(p, BS);
+			video::SColor c = MapBlock_LightColor(255, getInteriorLight(n, 1, nodedef), f.light_source);
+			u8 facedir = n.getFaceDir(nodedef);
+			for(u16 j = 0; j < f.mesh_ptr[facedir]->getMeshBufferCount(); j++) {
+				scene::IMeshBuffer *buf = f.mesh_ptr[facedir]->getMeshBuffer(j);
+				collector.append(getNodeTileN(n, p, j, data),
+					(video::S3DVertex *)buf->getVertices(), buf->getVertexCount(),
+					buf->getIndices(), buf->getIndexCount(), pos, c);
+			}
+		break;}
 		}
 	}
 }

src/mapblock_mesh.cpp

@@ -1428,3 +1428,54 @@ void MeshCollector::append(const TileSpec &tile,
 		p->vertices.push_back(vertices[i]);
 	}
 }
+
+/*
+	MeshCollector - for meshnodes and converted drawtypes.
+*/
+
+void MeshCollector::append(const TileSpec &tile,
+		const video::S3DVertex *vertices, u32 numVertices,
+		const u16 *indices, u32 numIndices,
+		v3f pos, video::SColor c)
+{
+	if(numIndices > 65535)
+	{
+		dstream<<"FIXME: MeshCollector::append() called with numIndices="<<numIndices<<" (limit 65535)"<<std::endl;
+		return;
+	}
+
+	PreMeshBuffer *p = NULL;
+	for(u32 i=0; i<prebuffers.size(); i++)
+	{
+		PreMeshBuffer &pp = prebuffers[i];
+		if(pp.tile != tile)
+			continue;
+		if(pp.indices.size() + numIndices > 65535)
+			continue;
+
+		p = &pp;
+		break;
+	}
+
+	if(p == NULL)
+	{
+		PreMeshBuffer pp;
+		pp.tile = tile;
+		prebuffers.push_back(pp);
+		p = &prebuffers[prebuffers.size()-1];
+	}
+
+	u32 vertex_count = p->vertices.size();
+	for(u32 i=0; i<numIndices; i++)
+	{
+		u32 j = indices[i] + vertex_count;
+		p->indices.push_back(j);
+	}
+	for(u32 i=0; i<numVertices; i++)
+	{
+		video::S3DVertex vert = vertices[i];
+		vert.Pos += pos;
+		vert.Color = c;		
+		p->vertices.push_back(vert);
+	}
+}

src/mapblock_mesh.h

@@ -174,6 +174,10 @@ struct MeshCollector
 	void append(const TileSpec &material,
 			const video::S3DVertex *vertices, u32 numVertices,
 			const u16 *indices, u32 numIndices);
+	void append(const TileSpec &material,
+			const video::S3DVertex *vertices, u32 numVertices,
+			const u16 *indices, u32 numIndices,
+			v3f pos, video::SColor c);
 };
 
 // This encodes

src/mesh.cpp

@@ -408,3 +408,219 @@ void setMeshColorByNormalXYZ(scene::IMesh *mesh,
 		}
 	}
 }
+
+void rotateMeshBy6dFacedir(scene::IMesh *mesh, int facedir)
+{		
+	int axisdir = facedir>>2;
+	facedir &= 0x03;
+
+	u16 mc = mesh->getMeshBufferCount();
+	for(u16 j = 0; j < mc; j++)
+	{
+		scene::IMeshBuffer *buf = mesh->getMeshBuffer(j);
+		video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
+		u16 vc = buf->getVertexCount();
+		for(u16 i=0; i<vc; i++)
+		{
+			switch (axisdir)
+			{
+			case 0:
+				if(facedir == 1)
+					vertices[i].Pos.rotateXZBy(-90);
+				else if(facedir == 2)
+					vertices[i].Pos.rotateXZBy(180);
+				else if(facedir == 3)
+					vertices[i].Pos.rotateXZBy(90);
+				break;
+			case 1: // z+
+				vertices[i].Pos.rotateYZBy(90);
+				if(facedir == 1)
+					vertices[i].Pos.rotateXYBy(90);
+				else if(facedir == 2)
+					vertices[i].Pos.rotateXYBy(180);
+				else if(facedir == 3)
+					vertices[i].Pos.rotateXYBy(-90);
+				break;
+			case 2: //z-
+				vertices[i].Pos.rotateYZBy(-90);
+				if(facedir == 1)
+					vertices[i].Pos.rotateXYBy(-90);
+				else if(facedir == 2)
+					vertices[i].Pos.rotateXYBy(180);
+				else if(facedir == 3)
+					vertices[i].Pos.rotateXYBy(90);
+				break;
+			case 3:  //x+
+				vertices[i].Pos.rotateXYBy(-90);
+				if(facedir == 1)
+					vertices[i].Pos.rotateYZBy(90);
+				else if(facedir == 2)
+					vertices[i].Pos.rotateYZBy(180);
+				else if(facedir == 3)
+					vertices[i].Pos.rotateYZBy(-90);
+				break;
+			case 4:  //x-
+				vertices[i].Pos.rotateXYBy(90);
+				if(facedir == 1)
+					vertices[i].Pos.rotateYZBy(-90);
+				else if(facedir == 2)
+					vertices[i].Pos.rotateYZBy(180);
+				else if(facedir == 3)
+					vertices[i].Pos.rotateYZBy(90);
+				break;
+			case 5:
+				vertices[i].Pos.rotateXYBy(-180);
+				if(facedir == 1)
+					vertices[i].Pos.rotateXZBy(90);
+				else if(facedir == 2)
+					vertices[i].Pos.rotateXZBy(180);
+				else if(facedir == 3)
+					vertices[i].Pos.rotateXZBy(-90);
+				break;
+			default:
+				break;
+			}
+		}
+	}
+}
+
+void recalculateBoundingBox(scene::IMesh *src_mesh)
+{
+	core::aabbox3d<f32> bbox;
+	bbox.reset(0,0,0);
+	for(u16 j = 0; j < src_mesh->getMeshBufferCount(); j++)
+	{
+		scene::IMeshBuffer *buf = src_mesh->getMeshBuffer(j);
+		buf->recalculateBoundingBox();
+		if(j == 0)
+			bbox = buf->getBoundingBox();
+		else
+			bbox.addInternalBox(buf->getBoundingBox());
+	}
+	src_mesh->setBoundingBox(bbox);
+}
+
+scene::IMesh* cloneMesh(scene::IMesh *src_mesh)
+{
+	scene::SMesh* dst_mesh = new scene::SMesh();
+	for(u16 j = 0; j < src_mesh->getMeshBufferCount(); j++)
+	{
+		scene::IMeshBuffer *buf = src_mesh->getMeshBuffer(j);
+		video::S3DVertex *vertices = (video::S3DVertex*)buf->getVertices();
+		u16 *indices = (u16*)buf->getIndices();
+		scene::SMeshBuffer *temp_buf = new scene::SMeshBuffer();
+		temp_buf->append(vertices, buf->getVertexCount(),
+			indices, buf->getIndexCount());
+		dst_mesh->addMeshBuffer(temp_buf);
+		temp_buf->drop();
+	}
+	return dst_mesh;					
+}
+
+scene::IMesh* convertNodeboxNodeToMesh(ContentFeatures *f)
+{
+	scene::SMesh* dst_mesh = new scene::SMesh();
+	for (u16 j = 0; j < 6; j++)
+	{
+		scene::IMeshBuffer *buf = new scene::SMeshBuffer();
+		dst_mesh->addMeshBuffer(buf);
+		buf->drop();
+	}
+	
+	video::SColor c(255,255,255,255);	
+
+	std::vector<aabb3f> boxes = f->node_box.fixed;
+		
+	for(std::vector<aabb3f>::iterator
+			i = boxes.begin();
+			i != boxes.end(); i++)
+	{
+		aabb3f box = *i;
+
+		f32 temp;
+		if (box.MinEdge.X > box.MaxEdge.X)
+			{
+				temp=box.MinEdge.X;
+				box.MinEdge.X=box.MaxEdge.X;
+				box.MaxEdge.X=temp;
+			}
+		if (box.MinEdge.Y > box.MaxEdge.Y)
+			{
+				temp=box.MinEdge.Y;
+				box.MinEdge.Y=box.MaxEdge.Y;
+				box.MaxEdge.Y=temp;
+			}
+		if (box.MinEdge.Z > box.MaxEdge.Z)
+			{
+				temp=box.MinEdge.Z;
+				box.MinEdge.Z=box.MaxEdge.Z;
+				box.MaxEdge.Z=temp;
+			}
+		// Compute texture coords
+		f32 tx1 = (box.MinEdge.X/BS)+0.5;
+		f32 ty1 = (box.MinEdge.Y/BS)+0.5;
+		f32 tz1 = (box.MinEdge.Z/BS)+0.5;
+		f32 tx2 = (box.MaxEdge.X/BS)+0.5;
+		f32 ty2 = (box.MaxEdge.Y/BS)+0.5;
+		f32 tz2 = (box.MaxEdge.Z/BS)+0.5;
+		f32 txc[24] = {
+			// up
+			tx1, 1-tz2, tx2, 1-tz1,
+			// down
+			tx1, tz1, tx2, tz2,
+			// right
+			tz1, 1-ty2, tz2, 1-ty1,
+			// left
+			1-tz2, 1-ty2, 1-tz1, 1-ty1,
+			// back
+			1-tx2, 1-ty2, 1-tx1, 1-ty1,
+			// front
+			tx1, 1-ty2, tx2, 1-ty1,
+		};
+		v3f min = box.MinEdge;
+		v3f max = box.MaxEdge;
+
+		video::S3DVertex vertices[24] =
+		{
+			// up
+			video::S3DVertex(min.X,max.Y,max.Z, 0,1,0, c, txc[0],txc[1]),
+			video::S3DVertex(max.X,max.Y,max.Z, 0,1,0, c, txc[2],txc[1]),
+			video::S3DVertex(max.X,max.Y,min.Z, 0,1,0, c, txc[2],txc[3]),
+			video::S3DVertex(min.X,max.Y,min.Z, 0,1,0, c, txc[0],txc[3]),
+			// down
+			video::S3DVertex(min.X,min.Y,min.Z, 0,-1,0, c, txc[4],txc[5]),
+			video::S3DVertex(max.X,min.Y,min.Z, 0,-1,0, c, txc[6],txc[5]),
+			video::S3DVertex(max.X,min.Y,max.Z, 0,-1,0, c, txc[6],txc[7]),
+			video::S3DVertex(min.X,min.Y,max.Z, 0,-1,0, c, txc[4],txc[7]),
+			// right
+			video::S3DVertex(max.X,max.Y,min.Z, 1,0,0, c, txc[ 8],txc[9]),
+			video::S3DVertex(max.X,max.Y,max.Z, 1,0,0, c, txc[10],txc[9]),
+			video::S3DVertex(max.X,min.Y,max.Z, 1,0,0, c, txc[10],txc[11]),
+			video::S3DVertex(max.X,min.Y,min.Z, 1,0,0, c, txc[ 8],txc[11]),
+			// left
+			video::S3DVertex(min.X,max.Y,max.Z, -1,0,0, c, txc[12],txc[13]),
+			video::S3DVertex(min.X,max.Y,min.Z, -1,0,0, c, txc[14],txc[13]),
+			video::S3DVertex(min.X,min.Y,min.Z, -1,0,0, c, txc[14],txc[15]),
+			video::S3DVertex(min.X,min.Y,max.Z, -1,0,0, c, txc[12],txc[15]),
+			// back
+			video::S3DVertex(max.X,max.Y,max.Z, 0,0,1, c, txc[16],txc[17]),
+			video::S3DVertex(min.X,max.Y,max.Z, 0,0,1, c, txc[18],txc[17]),
+			video::S3DVertex(min.X,min.Y,max.Z, 0,0,1, c, txc[18],txc[19]),
+			video::S3DVertex(max.X,min.Y,max.Z, 0,0,1, c, txc[16],txc[19]),
+			// front
+			video::S3DVertex(min.X,max.Y,min.Z, 0,0,-1, c, txc[20],txc[21]),
+			video::S3DVertex(max.X,max.Y,min.Z, 0,0,-1, c, txc[22],txc[21]),
+			video::S3DVertex(max.X,min.Y,min.Z, 0,0,-1, c, txc[22],txc[23]),
+			video::S3DVertex(min.X,min.Y,min.Z, 0,0,-1, c, txc[20],txc[23]),
+		};
+
+		u16 indices[] = {0,1,2,2,3,0};
+
+		for(u16 j = 0; j < 24; j += 4)
+		{
+			scene::IMeshBuffer *buf = dst_mesh->getMeshBuffer(j / 4);
+			buf->append(vertices + j, 4, indices, 6);
+		}
+	}
+	return dst_mesh;					
+}

src/mesh.h

@@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #define MESH_HEADER
 
 #include "irrlichttypes_extrabloated.h"
+#include "nodedef.h"
 #include <string>
 
 /*
@@ -68,5 +69,25 @@ void setMeshColorByNormalXYZ(scene::IMesh *mesh,
 		const video::SColor &colorX,
 		const video::SColor &colorY,
 		const video::SColor &colorZ);
+/*
+	Rotate the mesh by 6d facedir value.
+	Method only for meshnodes, not suitable for entities.
+*/
+void rotateMeshBy6dFacedir(scene::IMesh *mesh, int facedir);
+
+/*
+	Clone the mesh.
+*/
+scene::IMesh* cloneMesh(scene::IMesh *src_mesh);
+
+/*
+	Convert nodebox drawtype node to mesh.
+*/
+scene::IMesh* convertNodeboxNodeToMesh(ContentFeatures *f);
+
+/*
+	Update bounding box for a mesh.
+*/
+void recalculateBoundingBox(scene::IMesh *src_mesh);
 
 #endif

src/nodedef.cpp

@@ -23,6 +23,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "itemdef.h"
 #ifndef SERVER
 #include "tile.h"
+#include "mesh.h"
 #endif
 #include "log.h"
 #include "settings.h"
@@ -31,6 +32,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "util/serialize.h"
 #include "exceptions.h"
 #include "debug.h"
+#include "gamedef.h"
 
 /*
 	NodeBox
@@ -195,6 +197,11 @@ void ContentFeatures::reset()
 	// Unknown nodes can be dug
 	groups["dig_immediate"] = 2;
 	drawtype = NDT_NORMAL;
+	mesh = "";
+#ifndef SERVER
+	for(u32 i = 0; i < 24; i++)
+		mesh_ptr[i] = NULL;
+#endif
 	visual_scale = 1.0;
 	for(u32 i = 0; i < 6; i++)
 		tiledef[i] = TileDef();
@@ -295,6 +302,7 @@ void ContentFeatures::serialize(std::ostream &os, u16 protocol_version)
 	writeU8(os, waving);
 	// Stuff below should be moved to correct place in a version that otherwise changes
 	// the protocol version
+	os<<serializeString(mesh);
 }
 
 void ContentFeatures::deSerialize(std::istream &is)
@@ -363,6 +371,7 @@ void ContentFeatures::deSerialize(std::istream &is)
 	try{
 		// Stuff below should be moved to correct place in a version that
 		// otherwise changes the protocol version
+	mesh = deSerializeString(is);
 	}catch(SerializationError &e) {};
 }
 
@@ -386,7 +395,7 @@ public:
 	virtual content_t set(const std::string &name, const ContentFeatures &def);
 	virtual content_t allocateDummy(const std::string &name);
 	virtual void updateAliases(IItemDefManager *idef);
-	virtual void updateTextures(ITextureSource *tsrc, IShaderSource *shdsrc);
+	virtual void updateTextures(IGameDef *gamedef);
 	void serialize(std::ostream &os, u16 protocol_version);
 	void deSerialize(std::istream &is);
 
@@ -669,12 +678,15 @@ void CNodeDefManager::updateAliases(IItemDefManager *idef)
 }
 
 
-void CNodeDefManager::updateTextures(ITextureSource *tsrc, IShaderSource *shdsrc)
+void CNodeDefManager::updateTextures(IGameDef *gamedef)
 {
 #ifndef SERVER
 	infostream << "CNodeDefManager::updateTextures(): Updating "
 		"textures in node definitions" << std::endl;
 	
+	ITextureSource *tsrc = gamedef->tsrc();
+	IShaderSource *shdsrc = gamedef->getShaderSource();
+
 	bool new_style_water           = g_settings->getBool("new_style_water");
 	bool new_style_leaves          = g_settings->getBool("new_style_leaves");
 	bool connected_glass           = g_settings->getBool("connected_glass");
@@ -771,6 +783,10 @@ void CNodeDefManager::updateTextures(ITextureSource *tsrc, IShaderSource *shdsrc
 			f->backface_culling = false;
 			f->solidness = 0;
 			break;
+		case NDT_MESH:
+			f->solidness = 0;
+			f->backface_culling = false;
+			break;
 		case NDT_TORCHLIKE:
 		case NDT_SIGNLIKE:
 		case NDT_FENCELIKE:
@@ -810,6 +826,34 @@ void CNodeDefManager::updateTextures(ITextureSource *tsrc, IShaderSource *shdsrc
 				tile_shader[j], use_normal_texture,
 				f->tiledef_special[j].backface_culling, f->alpha, material_type);
 		}
+
+		// Meshnode drawtype
+		// Read the mesh and apply scale
+		if ((f->drawtype == NDT_MESH) && (f->mesh != "")) {
+			f->mesh_ptr[0] = gamedef->getMesh(f->mesh);
+			scaleMesh(f->mesh_ptr[0], v3f(f->visual_scale,f->visual_scale,f->visual_scale));
+			recalculateBoundingBox(f->mesh_ptr[0]);
+		}
+
+		//Convert regular nodebox nodes to meshnodes
+		//Change the drawtype and apply scale
+		if ((f->drawtype == NDT_NODEBOX) && 
+				((f->node_box.type == NODEBOX_REGULAR) || (f->node_box.type == NODEBOX_FIXED)) &&
+				(!f->node_box.fixed.empty())) {
+			f->drawtype = NDT_MESH;
+			f->mesh_ptr[0] = convertNodeboxNodeToMesh(f);
+			scaleMesh(f->mesh_ptr[0], v3f(f->visual_scale,f->visual_scale,f->visual_scale));
+			recalculateBoundingBox(f->mesh_ptr[0]);
+		}
+
+		//Cache 6dfacedir rotated clones of meshes
+		if (f->mesh_ptr[0] && (f->param_type_2 == CPT2_FACEDIR)) {
+				for (u16 j = 1; j < 24; j++) {
+					f->mesh_ptr[j] = cloneMesh(f->mesh_ptr[0]);
+					rotateMeshBy6dFacedir(f->mesh_ptr[j], j);
+					recalculateBoundingBox(f->mesh_ptr[j]);
+				}
+			}
 	}
 #endif
 }

src/nodedef.h

@@ -152,6 +152,7 @@ enum NodeDrawType
 	NDT_FIRELIKE, // Draw faces slightly rotated and only on connecting nodes,
 	NDT_GLASSLIKE_FRAMED_OPTIONAL,	// enabled -> connected, disabled -> Glass-like
 									// uses 2 textures, one for frames, second for faces
+	NDT_MESH, // Uses static meshes
 };
 
 #define CF_SPECIAL_COUNT 6
@@ -187,6 +188,10 @@ struct ContentFeatures
 
 	// Visual definition
 	enum NodeDrawType drawtype;
+	std::string mesh;
+#ifndef SERVER
+	scene::IMesh *mesh_ptr[24];
+#endif	
 	float visual_scale; // Misc. scale parameter
 	TileDef tiledef[6];
 	TileDef tiledef_special[CF_SPECIAL_COUNT]; // eg. flowing liquid
@@ -328,8 +333,7 @@ public:
 	/*
 		Update tile textures to latest return values of TextueSource.
 	*/
-	virtual void updateTextures(ITextureSource *tsrc,
-		IShaderSource *shdsrc)=0;
+	virtual void updateTextures(IGameDef *gamedef)=0;
 
 	virtual void serialize(std::ostream &os, u16 protocol_version)=0;
 	virtual void deSerialize(std::istream &is)=0;

src/script/common/c_content.cpp

@@ -281,6 +281,9 @@ ContentFeatures read_content_features(lua_State *L, int index)
 			ScriptApiNode::es_DrawType,NDT_NORMAL);
 	getfloatfield(L, index, "visual_scale", f.visual_scale);
 
+	/* Meshnode model filename */
+	getstringfield(L, index, "mesh", f.mesh);
+
 	// tiles = {}
 	lua_getfield(L, index, "tiles");
 	// If nil, try the deprecated name "tile_images" instead

src/script/cpp_api/s_node.cpp

@@ -45,6 +45,7 @@ struct EnumString ScriptApiNode::es_DrawType[] =
 		{NDT_FENCELIKE, "fencelike"},
 		{NDT_RAILLIKE, "raillike"},
 		{NDT_NODEBOX, "nodebox"},
+		{NDT_MESH, "mesh"},
 		{0, NULL},
 	};