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/hopper-test/wagon-wheel.png")}

spriteset           (spriteset_hopper_wagon_back, "../gfx/8bpp/hopper-test/x1/wagon-hopper-back-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/wagon-hopper-front-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/wagon-hopper-cargo-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, [
  STORE_TEMP((getbits(extra_callback_info1, 8, 8) < 4 ? CB_FLAG_MORE_SPRITES  : 0) + PALETTE_USE_DEFAULT, 0x100),
  getbits(extra_callback_info1, 8, 8)
  ]){
  0: spriteset_wagon_wheel;
  100: spriteset_hopper_wagon_back;
  2: spriteset_hopper_wagon_cargo;
  3: spriteset_hopper_wagon_front;
  return spriteset_hopper_wagon_back;
}

item(FEAT_TRAINS, hopper_wagon, 101){
  property{
    sprite_id:            SPRITE_ID_NEW_TRAIN;
    name:                 string(STR_hopper_wagon_name);
    climates_available:   ALL_CLIMATES;
    introduction_date:    date(1900, 1,1,);
    model_life:           VEHICLE_NEVER_EXPIRES;
    vehicle_life:         255;
    reliability_decay:    5;
    
    refittable_cargo_classes:     ALL_CARGO_CLASSES;
    non_refittable_cargo_classes: bitmask(); 
    cargo_capacity:       60;
    loading_speed:        20;
    
    //speed:                       160 km/h;
    //power:                       5000 hp;
    //tractive_effort_coefficient: 0.5;
    weight:                      40 ton;
    
    air_drag_coefficient:        0;
    extra_power_per_wagon:       0;
    extra_weight_per_wagon:      0;

    track_type:           RAIL;
    //engine_class:         ENGINE_CLASS_STEAM;
    //running_cost_base:    RUNNING_COST_STEAM;
    //visual_effect_and_powered: visual_effect_and_powered(1,2,DISABLE_WAGON_POWER);
    misc_flags:           TRAIN_FLAG_SPRITE_STACK;

    length:               8;
    dual_headed:          0;
    
    cost_factor:          10;
    running_cost_base:    RUNNING_COST_NONE;
    //running_cost_factor:  100;
    refit_cost:           0;
    bitmask_vehicle_info: 0;
    ai_engine_rank:       0;
    ai_special_flag:      AI_FLAG_CARGO;
  }
  graphics{
    default:  switch_hopper_wagon_layers;
    //purchase: spriteset_purchase_engine01;
    additional_text: string(STR_hopper_wagon_purchase);

    //articulated_part: switch_engine01_articulated;

    //purchase_speed:                       160;
    //purchase_power:                       5000;
    //purchase_tractive_effort_coefficient: 128;
    purchase_weight:                      40;

    //speed:                        switch_engine01_speed;
    //power:                        switch_engine01_power;
    //tractive_effort_coefficient:  switch_engine01_TE;
    //weight:                       switch_engine01_weight;
  }
}