int luaopen_physics_collider(lua_State *L)
{
unsigned short group_mask = 1;
unsigned short collision_mask = 1;
// get named arguments
luaL_checktype(L, 1, LUA_TTABLE);
lua_getfield(L, 1, "collision_shape");
check_collision_shape(L, -1);
int collision_shape_ref = luaL_ref(L, LUA_REGISTRYINDEX);
lua_getfield(L, 1, "group_mask");
if(!lua_isnil(L, -1))
{
group_mask = lua_tonumber(L, -1);
lua_pop(L, 1);
}
lua_getfield(L, 1, "collision_mask");
if(!lua_isnil(L, -1))
{
collision_mask = lua_tonumber(L, -1);
lua_pop(L, 1);
}
// get collision world
get_by_field_path(L, LUA_ENVIRONINDEX, "game.collision.get_udata");
lua_call(L, 0, 1);
collision_component *world = *(collision_component **) lua_touserdata(L, -1);
lua_pop(L, 1);
// get self
lua_getfield(L, LUA_ENVIRONINDEX, "self");
int self_ref = luaL_ref(L, LUA_REGISTRYINDEX);
// make collision obect and leave it on top of the stack
collider *c = new collider(
L, world, self_ref, collision_shape_ref, group_mask, collision_mask);
*(collider **)lua_newuserdata(L, sizeof(collision_component *)) = c;
// methods
register_closure(L, "set_collision_shape", collider_set_collision_shape);
register_closure(L, "get_udata", collider_get_udata);
register_closure(L, "on_removal", collider_on_removal);
return 0;
}
void ShadingSystem::register_builtin_closures()
{
for (int cid = 0; cid < NBUILTIN_CLOSURES; ++cid)
{
BuiltinClosure *clinfo = &builtin_closures[cid];
ASSERT(clinfo->id == cid);
register_closure (clinfo->name, cid, clinfo->params, clinfo->prepare, generic_closure_setup, generic_closure_compare);
}
}
int luaopen_physics_physics(lua_State *L)
{
physics_component_s *physics_component =
(physics_component_s *)lua_newuserdata(L, sizeof(physics_component_s));
register_closure(L, "draw", physics_draw);
register_closure(L, "update", physics_update);
//register_closure(L, "add_rigid_body", physics_add_rigid_body);
register_closure(L, "get_udata", physics_get_udata);
physics_component->broadphase = new btDbvtBroadphase();
physics_component->collision_configuration =
new btDefaultCollisionConfiguration();
physics_component->collision_dispatcher =
new btCollisionDispatcher(physics_component->collision_configuration);
physics_component->constraint_solver =
new btSequentialImpulseConstraintSolver();
physics_component->world = new btDiscreteDynamicsWorld(
physics_component->collision_dispatcher,
physics_component->broadphase,
physics_component->constraint_solver,
physics_component->collision_configuration);
physics_component->world->setGravity(btVector3(0, -10, 0));
physics_component->world->setDebugDrawer(new DebugDraw());
// ground
btCollisionShape *ground_shape =
new btStaticPlaneShape(btVector3(0, 1, 0), 0);
btDefaultMotionState *ground_motion_state = new btDefaultMotionState(
btTransform(btQuaternion(0, 0, 0, 1), btVector3(0, 0, 0)));
btRigidBody::btRigidBodyConstructionInfo ground_rigid_body_ci(
0, ground_motion_state, ground_shape, btVector3(0, 0, 0));
btRigidBody *ground_rigid_body = new btRigidBody(ground_rigid_body_ci);
physics_component->world->addRigidBody(ground_rigid_body);
return 0;
}
