ScriptInstance create(ScriptWorld& sw, UnitId unit, const ScriptDesc& desc)
{
CE_ASSERT(!hash_map::has(sw._map, unit), "Unit already has script component");
u32 script_i = hash_map::get(sw._cache
, desc.script_resource
, UINT32_MAX
);
ScriptWorld::ScriptData sd;
sd.module_ref = LUA_REFNIL;
if (script_i != UINT32_MAX)
{
sd = sw._script[script_i];
}
else
{
script_i = array::size(sw._script);
sw._resource_manager->load(RESOURCE_TYPE_SCRIPT, desc.script_resource);
sw._resource_manager->flush();
const LuaResource* lr = (LuaResource*)sw._resource_manager->get(RESOURCE_TYPE_SCRIPT, desc.script_resource);
LuaStack stack = sw._lua_environment->execute(lr);
stack.push_value(0);
sd.module_ref = luaL_ref(stack.L, LUA_REGISTRYINDEX);
array::push_back(sw._script, sd);
hash_map::set(sw._cache, desc.script_resource, script_i);
}
ScriptWorld::InstanceData data;
data.unit = unit;
data.script_i = script_i;
u32 instance_i = array::size(sw._data);
array::push_back(sw._data, data);
hash_map::set(sw._map, unit, instance_i);
LuaStack stack(sw._lua_environment->L);
lua_rawgeti(stack.L, LUA_REGISTRYINDEX, sd.module_ref);
lua_getfield(stack.L, -1, "spawned");
stack.push_world(sw._world);
stack.push_table(1);
stack.push_key_begin(1);
stack.push_unit(unit);
stack.push_key_end();
stack.call(0);
return script_world_internal::make_instance(instance_i);
}
