action cc_callback design-resolution animation callfunc initial sequence smoke-test-project third-party-tools animationcache appdelegate.cpp callbacks child-parent director dragon-bones event event-processing events ffmpeg files gifsicle image-processing imagemagick installation keyboard-processing links memory-management moveto origin plist project-structure removeself resolutionpolicy resources scene scrolling skeletal-animation sprite spriteframecache static-images stdbind tag texturepacker textures tiled tileset tmxmap