13.2 Load a sprite atlas and pull the player animation from it.

thirteen_two.monkey

Class Game Extends App
  '......................
  Field current_level:Int
  ' add field to hold new sprite sheet
  Field game_sprite_atlas:ftSpriteAtlas
  '.......................
  Method OnCreate()
    Self.engine = New CustomEngine
    
    play_scene = engine.GetDefaultScene()
    play_layer = engine.GetDefaultLayer()
    play_scene.AddLayer(play_layer)
    
    'Load the sprite sheet before creating the player
    LoadGameSprites()
    CreatePlayer()
    '................
  End
  
  ' load the image into a sprite atlas
  Method LoadGameSprites()
    game_sprite_atlas = New ftSpriteAtlas
    game_sprite_atlas.Load("tutorial_game_sprite_sheet.png", "tutorial_game_sprite_sheet.txt")
  End
  '........................
  
  Method CreatePlayer()
  	' load player sprite from sprite atlas
    Local box:ftObject = engine.CreateAnimImage(game_sprite_atlas.GetImage("player_submarine_anim"), 0, 0, 
    	128, game_sprite_atlas.GetImageHeight("player_submarine_anim"), 3, engine.GetCanvasWidth()/2, engine.GetCanvasHeight()/2)
    box.SetMaxSpeed(20.0)
    box.SetMinSpeed(-20.0)
    box.SetColGroup(PLAYER_GROUP)
    box.SetColType(Self.engine.ctBox)
    box.SetText("PLAYER")
    Local projectile_type:ProjectileType = New ProjectileType()
    Self.player = New Character(box, projectile_type, 0, 3, "PLAYER")
  End
  '..................
End