Function RunScript

engine/gui/src/gui.cpp:2018–2386

    };

    Result RunScript(HScene scene, ScriptFunction script_function, int custom_ref, void* args)
    {
        DM_PROFILE(__FUNCTION__);

        if (scene->m_Script == 0x0)
            return RESULT_OK;

        lua_State* L = scene->m_Context->m_LuaState;
        int top = lua_gettop(L);
        (void)top;

        int lua_ref = scene->m_Script->m_FunctionReferences[script_function];
        if (custom_ref != LUA_NOREF) {
            lua_ref = custom_ref;
        }

        if (lua_ref != LUA_NOREF)
        {
            lua_rawgeti(L, LUA_REGISTRYINDEX, scene->m_InstanceReference);
            dmScript::SetInstance(L);

            if (custom_ref != LUA_NOREF) {
                dmScript::ResolveInInstance(L, custom_ref);
                if (!lua_isfunction(L, -1))
                {
                    // If the script instance is dead we just ignore the callback
                    lua_pop(L, 1);
                    lua_pushnil(L);
                    dmScript::SetInstance(L);
                    dmLogWarning("Failed to call message response callback function, has it been deleted?");
                    return RESULT_OK;
                }
                dmScript::UnrefInInstance(L, custom_ref);
            }
            else
            {
                lua_rawgeti(L, LUA_REGISTRYINDEX, lua_ref);
            }

            assert(lua_isfunction(L, -1));

            lua_rawgeti(L, LUA_REGISTRYINDEX, scene->m_InstanceReference);

            uint32_t arg_count = 1;
            uint32_t ret_count = 0;

            const char* message_name = 0;
            switch (script_function)
            {
            case SCRIPT_FUNCTION_UPDATE:
                {
                    float* dt = (float*)args;
                    lua_pushnumber(L, (lua_Number) *dt);
                    arg_count += 1;
                }
                break;
            case SCRIPT_FUNCTION_ONMESSAGE:
                {