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#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 <irrlicht.h>
#include "../gameparts.hpp"
#include "cbphysbox.hpp"
#include "bphysmodel.hpp"
#include <client/lua_api/scene/igeneric.hpp>
#include <shared/lua_api/common.hpp>
using namespace irr;
using namespace scene;
using namespace core;
using namespace video;
extern IrrlichtDevice* device;
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());
u32 meshcount = pmesh->getMeshBufferCount();
btTriangleMesh* trimesh = new btTriangleMesh();
for(u32 meshnum = 0; meshnum < meshcount; meshnum++){
IMeshBuffer *b = pmesh->getMeshBuffer(meshnum);
//assert(b->getVertexType() == video::EVT_STANDARD);
u32 bi = b->getIndexCount();
u16 *indices = b->getIndices();
for(u32 i = 0; i < bi; i+= 3){
printf("Getting triangle %u of %u\n",i,bi);
u16 i1 = indices[i];
u16 i2 = indices[i + 1];
u16 i3 = indices[i + 2];
vector3df p1 = b->getPosition(i1);
vector3df p2 = b->getPosition(i2);
vector3df p3 = b->getPosition(i3);
btVector3 b1 = btVector3(p1.X,p1.Y,p1.Z) ;
btVector3 b2 = btVector3(p2.X,p2.Y,p2.Z) ;
btVector3 b3 = btVector3(p3.X,p3.Y,p3.Z) ;
trimesh->addTriangle(b1,b2,b3);
}
}
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, IrrlichtDevice* d){
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;
}
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