spriteset           (spriteset_wagon_wheel, "../gfx/8bpp/hopper-test/x1/wagon-wheel-x1-8bpp.png" )  {template_vehicle8_x1_8bpp(0)}
alternative_sprites (spriteset_wagon_wheel, ZOOM_LEVEL_IN_4X,  BIT_DEPTH_8BPP         ) 	{template_vehicle8_x4(0, "../gfx/8bpp/hopper-test/wagon-wheel-8bpp.png")}
alternative_sprites (spriteset_wagon_wheel, ZOOM_LEVEL_NORMAL, BIT_DEPTH_32BPP        ) 	{template_vehicle8_x1(0, "../gfx/32bpp/hopper-test/x1/wagon-wheel-x1.png")}
alternative_sprites (spriteset_wagon_wheel, ZOOM_LEVEL_IN_4X,  BIT_DEPTH_32BPP        )   {template_vehicle8_x4(0, "../gfx/32bpp/engihopper-testne01/wagon-wheel.png")}

spriteset           (spriteset_hopper_wagon_back, "../gfx/8bpp/hopper-test/x1/engine01_0-x1-8bpp.png" )  {template_vehicle8_x1_8bpp(0)}
alternative_sprites (spriteset_hopper_wagon_back, ZOOM_LEVEL_IN_4X,  BIT_DEPTH_8BPP         ) 	{template_vehicle8_x4(0, "../gfx/8bpp/hopper-test/wagon-hopper-back-8bpp.png")}
alternative_sprites (spriteset_hopper_wagon_back, ZOOM_LEVEL_NORMAL, BIT_DEPTH_32BPP        ) 	{template_vehicle8_x1(0, "../gfx/32bpp/hopper-test/x1/wagon-hopper-back-x1.png")}
alternative_sprites (spriteset_hopper_wagon_back, ZOOM_LEVEL_IN_4X,  BIT_DEPTH_32BPP        )   {template_vehicle8_x4(0, "../gfx/32bpp/hopper-test/wagon-hopper-back.png")}

spriteset           (spriteset_hopper_wagon_front, "../gfx/8bpp/hopper-test/x1/engine01_1-x1-8bpp.png" )  {template_vehicle8_x1_8bpp(0)}
alternative_sprites (spriteset_hopper_wagon_front, ZOOM_LEVEL_IN_4X,  BIT_DEPTH_8BPP         ) 	{template_vehicle8_x4(0, "../gfx/8bpp/hopper-test/wagon-hopper-front-8bpp.png")}
alternative_sprites (spriteset_hopper_wagon_front, ZOOM_LEVEL_NORMAL, BIT_DEPTH_32BPP        ) 	{template_vehicle8_x1(0, "../gfx/32bpp/hopper-test/x1/wagon-hopper-front-x1.png")}
alternative_sprites (spriteset_hopper_wagon_front, ZOOM_LEVEL_IN_4X,  BIT_DEPTH_32BPP        )  {template_vehicle8_x4(0, "../gfx/32bpp/hopper-test/wagon-hopper-front.png")}

spriteset           (spriteset_hopper_wagon_cargo, "../gfx/8bpp/hopper-test/x1/engine01_2-x1-8bpp.png" )  {template_vehicle8_x1_8bpp(0)}
alternative_sprites (spriteset_hopper_wagon_cargo, ZOOM_LEVEL_IN_4X,  BIT_DEPTH_8BPP         )  {template_vehicle8_x4(0, "../gfx/8bpp/hopper-test/wagon-hopper-cargo-8bpp.png")}
alternative_sprites (spriteset_hopper_wagon_cargo, ZOOM_LEVEL_NORMAL, BIT_DEPTH_32BPP        )  {template_vehicle8_x1(0, "../gfx/32bpp/hopper-test/x1/wagon-hopper-cargo-x1.png")}
alternative_sprites (spriteset_hopper_wagon_cargo, ZOOM_LEVEL_IN_4X,  BIT_DEPTH_32BPP        )  {template_vehicle8_x4(0, "../gfx/32bpp/hopper-test/wagon-hopper-cargo.png")}

switch (FEAT_TRAINS,SELF, switch_hopper_wagon_layers, getbits(extra_callback_info1, 8, 8)){
  0: spriteset_wagon_wheel;
  1: spriteset_hopper_wagon_back;
  2: spriteset_hopper_wagon_cargo;
  3: spriteset_hopper_wagon_front;
  return spriteset_hopper_wagon_back;
}