Function GetAtlas

engine/gamesys/src/gamesys/scripts/script_resource.cpp:2828–2906

Get atlas data * Returns the atlas data for an atlas * * @name resource.get_atlas * * @param path [type:hash|string] The path to the atlas resource * * @return data [type:table] A table with the following entries: * * - texture * - geometries * - animations * * Each animation entry also contains a `frames` table with indices into * `geometries`, preserving the frame-to-geometry mappi

 *
 */
static int GetAtlas(lua_State* L)
{
    DM_LUA_STACK_CHECK(L, 1);

    dmhash_t path_hash = dmScript::CheckHashOrString(L, 1);

    TextureSetResource* texture_set_res      = (TextureSetResource*) CheckResource(L, g_ResourceModule.m_Factory, path_hash, "texturesetc");
    dmGameSystemDDF::TextureSet* texture_set = texture_set_res->m_TextureSet;
    assert(texture_set);

    #define SET_LUA_TABLE_FIELD(set_fn, key, val) \
        set_fn(L, val); \
        lua_setfield(L, -2, key);

    lua_newtable(L);

    if (texture_set->m_TextureHash)
    {
        SET_LUA_TABLE_FIELD(dmScript::PushHash, "texture", texture_set->m_TextureHash);
    }
    else
    {
        SET_LUA_TABLE_FIELD(lua_pushstring, "texture", texture_set->m_Texture);
    }

    lua_pushliteral(L, "animations");
    lua_newtable(L);
    {
        for (int i = 0; i < texture_set->m_Animations.m_Count; ++i)
        {
            dmGameSystemDDF::TextureSetAnimation& anim = texture_set->m_Animations[i];

            lua_pushinteger(L, (lua_Integer) (i+1));
            lua_newtable(L);

            SET_LUA_TABLE_FIELD(lua_pushstring, "id", anim.m_Id);
            SET_LUA_TABLE_FIELD(lua_pushinteger, "width", anim.m_Width);
            SET_LUA_TABLE_FIELD(lua_pushinteger, "height", anim.m_Height);
            SET_LUA_TABLE_FIELD(lua_pushinteger, "fps", anim.m_Fps);
            SET_LUA_TABLE_FIELD(lua_pushinteger, "playback", (lua_Integer) DDFPlaybackToGameObjectPlayback(anim.m_Playback));
            SET_LUA_TABLE_FIELD(lua_pushboolean, "flip_horizontal", anim.m_FlipHorizontal);
            SET_LUA_TABLE_FIELD(lua_pushboolean, "flip_vertical", anim.m_FlipVertical);
            lua_pushliteral(L, "frames");
            lua_newtable(L);

            for (uint32_t frame_index = anim.m_Start; frame_index < anim.m_End; ++frame_index)
            {
                uint32_t geometry_index = texture_set->m_FrameIndices[frame_index];
                lua_pushinteger(L, (lua_Integer) (frame_index - anim.m_Start + 1));
                lua_pushinteger(L, (lua_Integer) (geometry_index + 1));
                lua_rawset(L, -3);
            }
            lua_settable(L, -3);

            lua_rawset(L, -3);
        }
    }
    lua_rawset(L, -3);