void GritObject::notifyFade (lua_State *L,
const GritObjectPtr &self,
const float fade)
{
if (gritClass==NULL) GRIT_EXCEPT("Object destroyed");
if (!isActivated()) return;
STACK_BASE;
//stack is empty
push_cfunction(L, my_lua_error_handler);
int error_handler = lua_gettop(L);
//stack: err
// call into lua...
//stack: err
getField(L, "setFade");
//stack: err, class, callback
if (lua_isnil(L, -1)) {
// TODO(dcunnin): We should add needsFadeCallbacks.
// This might be part of a genreal overhaul of lod levels, etc.
// no setFade function, do nothing
lua_pop(L, 2);
//stack is empty
STACK_CHECK;
return;
}
//stack: err, callback
// we now have the callback to play with
push_gritobj(L, self); // persistent grit obj
lua_pushnumber(L, fade); // fade
//stack: err, callback, persistent, fade
int status = lua_pcall(L, 2, 0, error_handler);
if (status) {
//stack: err, msg
// pop the error message since the error handler will
// have already printed it out
lua_pop(L, 1);
object_del(L, self);
//stack: err
}
//stack: err
lua_pop(L, 1);
//stack is empty
STACK_CHECK;
}
void GritObject::init (lua_State *L, const GritObjectPtr &self)
{
if (gritClass==NULL) GRIT_EXCEPT("Object destroyed");
STACK_BASE;
//stack is empty
push_cfunction(L, my_lua_error_handler);
int error_handler = lua_gettop(L);
//stack: err
//stack: err
getField(L, "init");
//stack: err, callback
if (lua_isnil(L, -1)) {
lua_pop(L, 2);
//stack is empty
STACK_CHECK;
CERR << "initializing object: \""<<name<<"\": "
<< "class \""<<gritClass->name<<"\" "
<< "does not have init function" << std::endl;
object_del(L, self);
return;
}
// Call the callback.
lua_checkstack(L, 2);
push_gritobj(L, self); // persistent grit obj
//stack: err, callback, persistent
int status = lua_pcall(L, 1, 0, error_handler);
if (status) {
//stack: err, msg
// pop the error message since the error handler will
// have already printed it out
lua_pop(L, 1);
CERR << "Object: \"" << name << "\" raised an error on initialization, so destroying it."
<< std::endl;
// will deactivate us
object_del(L, self);
//stack: err
}
//stack: err
lua_pop(L, 1);
//stack is empty
STACK_CHECK;
}
bool GritObject::stepCallback (lua_State *L, const GritObjectPtr &self, float elapsed)
{
if (gritClass==NULL) GRIT_EXCEPT("Object destroyed");
STACK_BASE;
//stack is empty
push_cfunction(L, my_lua_error_handler);
int error_handler = lua_gettop(L);
//stack: err
getField(L, "stepCallback");
//stack: err, callback
if (lua_isnil(L, -1)) {
lua_pop(L, 2);
//stack is empty
STACK_CHECK;
return false;
}
// Call the callback.
lua_checkstack(L, 2);
push_gritobj(L, self); // persistent grit obj
lua_pushnumber(L, elapsed); // time since last frame
//stack: err, callback, instance, elapsed
int status = lua_pcall(L, 2, 0, error_handler);
if (status) {
//stack: err, msg
// pop the error message since the error handler will
// have already printed it out
lua_pop(L, 1);
//stack: err
}
//stack: err
lua_pop(L, 1);
//stack is empty
STACK_CHECK;
return status == 0;
}
static int rbody_index (lua_State *L)
{
TRY_START
check_args(L, 2);
GET_UD_MACRO(RigidBody, self, 1, RBODY_TAG);
const char *key = luaL_checkstring(L, 2);
if (!::strcmp(key, "force")) {
push_cfunction(L, rbody_force);
} else if (!::strcmp(key, "impulse")) {
push_cfunction(L, rbody_impulse);
} else if (!::strcmp(key, "torque")) {
push_cfunction(L, rbody_torque);
} else if (!::strcmp(key, "torqueImpulse")) {
push_cfunction(L, rbody_torque_impulse);
} else if (!::strcmp(key, "procObjMaterials")) {
std::vector<int> mats;
self.colMesh->getProcObjMaterials(mats);
lua_createtable(L, mats.size(), 0);
for (size_t j=0 ; j<mats.size(); ++j) {
lua_pushstring(L, phys_mats.getMaterial(mats[j])->name.c_str());
lua_rawseti(L, -2, j+1);
}
} else if (!::strcmp(key, "scatter")) {
push_cfunction(L, rbody_scatter);
} else if (!::strcmp(key, "rangedScatter")) {
push_cfunction(L, rbody_ranged_scatter);
} else if (!::strcmp(key, "activate")) {
push_cfunction(L, rbody_activate);
} else if (!::strcmp(key, "deactivate")) {
push_cfunction(L, rbody_deactivate);
} else if (!::strcmp(key, "destroy")) {
push_cfunction(L, rbody_destroy);
} else if (!::strcmp(key, "linearSleepThreshold")) {
lua_pushnumber(L, self.getLinearSleepThreshold());
} else if (!::strcmp(key, "angularSleepThreshold")) {
lua_pushnumber(L, self.getAngularSleepThreshold());
} else if (!::strcmp(key, "worldPosition")) {
push_v3(L, self.getPosition());
} else if (!::strcmp(key, "worldOrientation")) {
push_quat(L, self.getOrientation());
} else if (!::strcmp(key, "localToWorld")) {
push_cfunction(L, rbody_local_to_world);
} else if (!::strcmp(key, "worldToLocal")) {
push_cfunction(L, rbody_world_to_local);
} else if (!::strcmp(key, "linearVelocity")) {
push_v3(L, self.getLinearVelocity());
} else if (!::strcmp(key, "angularVelocity")) {
push_v3(L, self.getAngularVelocity());
} else if (!::strcmp(key, "getLocalVelocity")) {
push_cfunction(L, rbody_local_vel);
} else if (!::strcmp(key, "contactProcessingThreshold")) {
lua_pushnumber(L, self.getContactProcessingThreshold());
} else if (!::strcmp(key, "linearDamping")) {
lua_pushnumber(L, self.getLinearDamping());
} else if (!::strcmp(key, "angularDamping")) {
lua_pushnumber(L, self.getAngularDamping());
} else if (!::strcmp(key, "mass")) {
lua_pushnumber(L, self.getMass());
} else if (!::strcmp(key, "inertia")) {
push_v3(L, self.getInertia());
} else if (!::strcmp(key, "ghost")) {
lua_pushboolean(L, self.getGhost());
} else if (!::strcmp(key, "numParts")) {
lua_pushnumber(L, self.getNumElements());
} else if (!::strcmp(key, "getPartEnabled")) {
push_cfunction(L, rbody_get_part_enabled);
} else if (!::strcmp(key, "setPartEnabled")) {
push_cfunction(L, rbody_set_part_enabled);
} else if (!::strcmp(key, "getPartPositionInitial")) {
push_cfunction(L, rbody_get_part_position_initial);
} else if (!::strcmp(key, "getPartPositionOffset")) {
push_cfunction(L, rbody_get_part_position_offset);
} else if (!::strcmp(key, "setPartPositionOffset")) {
push_cfunction(L, rbody_set_part_position_offset);
} else if (!::strcmp(key, "getPartOrientationInitial")) {
push_cfunction(L, rbody_get_part_orientation_initial);
} else if (!::strcmp(key, "getPartOrientationOffset")) {
push_cfunction(L, rbody_get_part_orientation_offset);
} else if (!::strcmp(key, "setPartOrientationOffset")) {
push_cfunction(L, rbody_set_part_orientation_offset);
} else if (!::strcmp(key, "meshName")) {
push_string(L, self.colMesh->getName());
} else if (!::strcmp(key, "owner")) {
if (self.owner.isNull()) {
lua_pushnil(L);
} else {
push_gritobj(L, self.owner);
}
} else if (!::strcmp(key, "updateCallback")) {
self.updateCallbackPtr.push(L);
} else if (!::strcmp(key, "stepCallback")) {
self.stepCallbackPtr.push(L);
} else if (!::strcmp(key, "collisionCallback")) {
self.collisionCallbackPtr.push(L);
} else if (!::strcmp(key, "stabiliseCallback")) {
self.stabiliseCallbackPtr.push(L);
} else {
my_lua_error(L, "Not a readable RigidBody member: "+std::string(key));
}
return 1;
TRY_END
}
bool GritObject::deactivate (lua_State *L, const GritObjectPtr &self)
{
if (gritClass==NULL) GRIT_EXCEPT("Object destroyed");
if (!isActivated()) return false;
bool killme = false;
streamer_unlist_as_activated(self);
STACK_BASE;
//stack is empty
push_cfunction(L, my_lua_error_handler);
int error_handler = lua_gettop(L);
//stack: err
//stack: err
getField(L, "deactivate");
//stack: err, callback
if (lua_isnil(L, -1)) {
lua_pop(L, 2);
//stack is empty
CERR << "deactivating object: \""<<name<<"\": "
<< "class \""<<gritClass->name<<"\" "
<< "does not have deactivate function" << std::endl;
luaL_unref(L, LUA_REGISTRYINDEX, lua);
lua = LUA_NOREF;
STACK_CHECK;
// returning true indicates the object will be erased
// to prevent the error reoccuring
return true;
}
//stack: err, callback
// Make the call.
push_gritobj(L, self); // persistent grit obj
//stack: err, callback, self
int status = lua_pcall(L, 1, 1, error_handler);
if (status) {
//stack: err, msg
// pop the error message since the error handler will
// have already printed it out
lua_pop(L, 1);
killme = true;
//stack: err
} else {
//stack: err, killme
killme = 0 != lua_toboolean(L, -1);
lua_pop(L, 1);
//stack: err
}
//stack: err
luaL_unref(L, LUA_REGISTRYINDEX, lua);
lua = LUA_NOREF;
lua_pop(L, 1);
//stack is empty
STACK_CHECK;
return killme;
}
void GritObject::activate (lua_State *L,
const GritObjectPtr &self)
{
if (isActivated()) return;
// can call in from lua after destroyed by deleteObject
if (gritClass==NULL) GRIT_EXCEPT("Object destroyed");
if (!demand.loaded()) {
// If it's not loaded yet then we must have been activated explicitly
// i.e. not via the streamer, which waits until the demand is loaded.
// Since it's an explicit activation, we better make sure it will work.
try {
demand.immediateLoad();
} catch (Exception &e) {
CERR << e << std::endl;
CERR << "Object: \"" << name << "\" raised an error on activation, so destroying it."
<< std::endl;
// will deactivate us
object_del(L, self);
return;
}
}
STACK_BASE;
//stack is empty
// error handler in case there is a problem during
// the callback
push_cfunction(L, my_lua_error_handler);
int error_handler = lua_gettop(L);
//stack: err
//stack: err
getField(L, "activate");
//stack: err, callback
if (lua_isnil(L, -1)) {
// don't activate it as class does not have activate function
// pop both the error handler and the nil activate function
// and the table
lua_pop(L, 3);
CERR << "activating object: \""<<name<<"\": "
<< "class \""<<gritClass->name<<"\" "
<< "does not have activate function" << std::endl;
object_del(L, self);
STACK_CHECK;
return;
}
//stack: err, callback
STACK_CHECK_N(2);
// Call activate callback:
// push 4 args
lua_checkstack(L, 5);
//stack: err, callback
push_gritobj(L, self); // persistent
//stack: err, callback, persistent
lua_newtable(L); // instance
//stack: err, callback, persistent, instance
lua_pushvalue(L, -1);
//stack: err, callback, persistent, instance, instance
lua = luaL_ref(L, LUA_REGISTRYINDEX); // set up the lua ref to the new instance
//stack: err, callback, persistent, instance
STACK_CHECK_N(4);
// call (2 args), pops function too
int status = lua_pcall(L, 2, 0, error_handler);
if (status) {
STACK_CHECK_N(2);
//stack: err, error
// pop the error message since the error handler will
// have already printed it out
lua_pop(L, 1);
CERR << "Object: \"" << name << "\" raised an error on activation, so destroying it."
<< std::endl;
// will deactivate us
object_del(L, self);
//stack: err
STACK_CHECK_N(1);
} else {
STACK_CHECK_N(1);
//stack: err
streamer_list_as_activated(self);
lastFade = -1;
}
//stack: err
STACK_CHECK_N(1);
lua_pop(L, 1);
//stack is empty
STACK_CHECK;
}
static int gritobj_index (lua_State *L)
{
TRY_START
check_args(L,2);
GET_UD_MACRO(GritObjectPtr,self,1,GRITOBJ_TAG);
std::string key = check_string(L,2);
if (key=="destroy") {
push_cfunction(L,gritobj_destroy);
} else if (key=="activated") {
lua_pushboolean(L,self->isActivated());
} else if (key=="near") {
push_gritobj(L,self->getNearObj());
} else if (key=="far") {
push_gritobj(L,self->getFarObj());
} else if (key=="fade") {
lua_pushnumber(L,self->getFade());
} else if (key=="updateSphere") {
push_cfunction(L,gritobj_update_sphere);
} else if (key=="pos") {
push_v3(L, self->getPos());
} else if (key=="renderingDistance") {
lua_pushnumber(L, self->getR());
} else if (key=="deactivate") {
push_cfunction(L,gritobj_deactivate);
} else if (key=="activate") {
push_cfunction(L,gritobj_activate);
} else if (key=="instance") {
self->pushLuaTable(L);
} else if (key=="addDiskResource") {
push_cfunction(L,gritobj_add_disk_resource);
} else if (key=="reloadDiskResources") {
push_cfunction(L,gritobj_reload_disk_resource);
/*
} else if (key=="getAdvancePrepareHints") {
push_cfunction(L,gritobj_get_advance_prepare_hints);
*/
} else if (key=="destroyed") {
lua_pushboolean(L,self->getClass()==NULL);
} else if (key=="class") {
GritClass *c = self->getClass();
if (c==NULL) my_lua_error(L,"GritObject destroyed");
push_gritcls(L,c);
} else if (key=="className") {
GritClass *c = self->getClass();
if (c==NULL) my_lua_error(L,"GritObject destroyed");
lua_pushstring(L,c->name.c_str());
} else if (key=="name") {
lua_pushstring(L,self->name.c_str());
} else if (key=="needsFrameCallbacks") {
lua_pushboolean(L,self->getNeedsFrameCallbacks());
} else if (key=="needsStepCallbacks") {
lua_pushboolean(L,self->getNeedsStepCallbacks());
} else if (key=="dump") {
self->userValues.dump(L);
} else {
GritClass *c = self->getClass();
if (c==NULL) my_lua_error(L,"GritObject destroyed");
const char *err = self->userValues.luaGet(L);
if (err) my_lua_error(L, err);
if (!lua_isnil(L,-1)) return 1;
lua_pop(L,1);
// try class instead
c->get(L,key);
}
return 1;
TRY_END
}