g->step_delay = parameter[GFX_ARG_STEP_DELAY];
g->direction = parameter[GFX_ARG_DIRECTION];
g->position = parameter[GFX_ARG_POSITION];
+ g->x = parameter[GFX_ARG_X]; // (may be uninitialized,
+ g->y = parameter[GFX_ARG_Y]; // unlike src_x and src_y)
/* this is only used for drawing font characters */
g->draw_xoffset = parameter[GFX_ARG_DRAW_XOFFSET];