diff options
Diffstat (limited to 'src/shared/lua_api/phys/bphysmodel.cpp')
| -rw-r--r-- | src/shared/lua_api/phys/bphysmodel.cpp | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/src/shared/lua_api/phys/bphysmodel.cpp b/src/shared/lua_api/phys/bphysmodel.cpp new file mode 100644 index 0000000..e9fecbf --- /dev/null +++ b/src/shared/lua_api/phys/bphysmodel.cpp @@ -0,0 +1,153 @@ + +#include <stdio.h> +#include <stdlib.h> +#include <vector> +#include <memory> +#include <map> +#include <functional> +#include <list> +extern "C" { + #include <lua.h> + #include <lauxlib.h> + #include <lualib.h> +} +#include <btBulletDynamicsCommon.h> +#include "bphysmodel.hpp" +#include <shared/lua_api/common.hpp> +#include <shared/util/tinyobj.hpp> + +extern btDiscreteDynamicsWorld* World; +extern std::list<btRigidBody*> Objects; + +//newbphysmodel("graphicfile","physicfile",mass,[,{position}][,{lookat}]) +static int newbphysmodel(lua_State* L){ + printf("Creating bphysmodel\n"); + int nargs = lua_gettop(L); + double lx,ly,lz; + double x,y,z; + if(nargs > 4){ + //"graphicsfile","physicsfile",{position},{lookat} + popvector3d(L,&lx,&ly,&lz); + } + if(nargs > 3){ + //"graphicsfile","physicsfile",{position} + popvector3d(L,&x,&y,&z); + } + //"graphicsfile","physicsfile" + + double mass = lua_tonumber(L,-1); + const char *ppath = lua_tostring(L,-2); + //const char *gpath = lua_tostring(L,-3); + lua_pop(L,3); + + //ISceneManager *smgr = device->getSceneManager(); + + //printf("bphysnode, creating the scene node\n"); + + ////Create the scene node + //IMesh *gmesh = smgr->getMesh(gpath); + //ISceneNode *node = smgr->addMeshSceneNode(gmesh,0,-1,vector3df(x,y,z)); + + printf("bphysnode, createing the physics body\n"); + //Create the physics body + //IMesh *pmesh = smgr->getMesh(ppath); + //printf("We have %d mesh buffers\n",pmesh->getMeshBufferCount()); + tinyobj_attrib_t attrib; + tinyobj_shape_t *shapes = NULL; + size_t meshcount; + tinyobj_material_t *materials = NULL; + size_t num_materials; + + size_t data_len = 0; + FILE *objfile = fopen(ppath,"rb"); + fseek(objfile,0,SEEK_END); + data_len = ftell(objfile); + fseek(objfile,0,SEEK_SET); + char *objdata = (char*)malloc(sizeof(char)*data_len); + fread(objdata, sizeof(char), data_len, objfile); + fclose(objfile); + int err = tinyobj_parse_obj(&attrib, &shapes, &meshcount, &materials, &num_materials, objdata, data_len, 0); + if(err != TINYOBJ_SUCCESS){ + printf("Tinyobj failed to load model:%s\n",ppath); + } + //u32 meshcount = pmesh->getMeshBufferCount(); + btTriangleMesh* trimesh = new btTriangleMesh(); + size_t numverts = attrib.num_face_num_verts; + //size_t stride = 9; //9 = 3 position floats + 3 normal floats + 3 color floats + size_t face_offset = 0; + for(size_t i = 0; i < numverts; i++){ + for(size_t j = 0; j < (size_t)attrib.face_num_verts[i] / 3; j++){ + float v[3][3]; //this tri + tinyobj_vertex_index_t idx0, idx1, idx2; + idx0 = attrib.faces[face_offset + 3 * j + 0]; + idx1 = attrib.faces[face_offset + 3 * j + 1]; + idx2 = attrib.faces[face_offset + 3 * j + 2]; + for(short k = 0; k < 3; k++){ + int f0, f1, f2; + f0 = idx0.v_idx; + f1 = idx1.v_idx; + f2 = idx2.v_idx; + v[0][k] = attrib.vertices[3 * (size_t)f0 + k]; + v[1][k] = attrib.vertices[3 * (size_t)f1 + k]; + v[2][k] = attrib.vertices[3 * (size_t)f2 + k]; + } + btVector3 b1,b2,b3; + b1 = btVector3(v[0][0],v[0][1],v[0][2]); + b2 = btVector3(v[1][0],v[1][1],v[1][2]); + b3 = btVector3(v[2][0],v[2][1],v[2][2]); + trimesh->addTriangle(b1,b2,b3); + } + face_offset += (size_t)attrib.face_num_verts[i]; + } + printf("Done building trimesh\n"); + btCollisionShape *shape = new btBvhTriangleMeshShape(trimesh,true); + btTransform tr; + tr.setIdentity(); + tr.setOrigin(btVector3(x,y,z)); + printf("Created default motion shape\n"); + btDefaultMotionState *ms = new btDefaultMotionState(btTransform(tr)); + btVector3 li; + shape->calculateLocalInertia(mass, li); + btRigidBody *rb = new btRigidBody(mass,ms,shape,li); + //rb->setUserPointer((void*) node); + World->addRigidBody(rb); + Objects.push_back(rb); + printf("Rigid body finished\n"); + + //Create the lua representation + lua_newtable(L); + lua_pushlightuserdata(L,rb); + lua_setfield(L,-2,"rigidbody"); + //lua_pushlightuserdata(L,node); + //lua_setfield(L,-2,"node"); + luaL_getmetatable(L,"phys.physmodel"); + lua_setmetatable(L,-2); + printf("finished creating the lua representation\n"); + + return 1; +} + +static const luaL_reg bphysmodel_f[] = { + {"newphysmodel", newbphysmodel}, + {0,0}, +}; + +static const luaL_reg bphysmodel_m[] = { + {0, 0}, +}; + +int bphysmodel_register(lua_State* L){ + + //device = d; + + //printf("bphysmodel registered\n"); + + luaL_newmetatable(L, "phys.physmodel");//{} + luaL_register(L,NULL,bphysmodel_m); + //luaL_register(L,NULL,igeneric_m); //Inherit all the things to do with scene nodes + + lua_getglobal(L,"phys"); + luaL_register(L,NULL,bphysmodel_f); + + return 1; +} |