Make TextureRef class for holding textures.

Use it in World so that all Terrain-specific configuration can be specified in
one place.

GitOrigin-RevId: 31acf292ae6e438f609a7396e78555e1db9b744e

Shared/Player.cs

@@ -237,7 +237,7 @@ namespace SemiColinGames {
       Vector2 spriteCenter = new Vector2(spriteWidth / 2, spriteHeight / 2 + spriteCenterYOffset);
       SpriteEffects effect = Facing == 1 ?
         SpriteEffects.FlipHorizontally : SpriteEffects.None;
-      spriteBatch.Draw(Textures.Player, position.ToVector2(), textureSource, Color.White, 0f,
+      spriteBatch.Draw(Textures.Player.Get(), position.ToVector2(), textureSource, Color.White, 0f,
         spriteCenter, Vector2.One, effect, 0f);
     }
   }

Shared/Scene.cs

@@ -60,10 +60,10 @@ namespace SemiColinGames {
 
       float xScale = 1f / 16;
       for (int i = 0; i < Textures.Backgrounds.Length; i++) {
-        int yOffset = Textures.Backgrounds[i].Height - camera.Height - 24;
+        int yOffset = Textures.Backgrounds[i].Get().Height - camera.Height - 24;
         Rectangle bgSource = new Rectangle(
           (int) (camera.Left * xScale), yOffset, camera.Width, camera.Height);
-        spriteBatch.Draw(Textures.Backgrounds[i], bgTarget, bgSource, Color.White);
+        spriteBatch.Draw(Textures.Backgrounds[i].Get(), bgTarget, bgSource, Color.White);
         xScale *= 2;
       }
       spriteBatch.End();

Shared/Textures.cs

@@ -1,47 +1,64 @@
 using Microsoft.Xna.Framework.Content;
 using Microsoft.Xna.Framework.Graphics;
 
+using System.Collections.Generic;
+
 namespace SemiColinGames {
+
+  class TextureRef {
+    private static readonly List<TextureRef> allTextures = new List<TextureRef>();
+
+    public static void LoadAll(ContentManager content) {
+      foreach (TextureRef texture in allTextures) {
+        texture.Load(content);
+      }
+    }
+
+    private readonly string contentPath;
+    private Texture2D texture;
+
+    public TextureRef(string contentPath) {
+      allTextures.Add(this);
+      this.contentPath = contentPath;
+    }
+
+    public Texture2D Get() {
+      return texture;
+    }
+
+    private void Load(ContentManager content) {
+      texture = content.Load<Texture2D>(contentPath);
+    }
+  }
+
   class Textures {
 
-    public static Texture2D Player;
-
-    // Backgrounds are indexed by draw order; the first element should be drawn furthest back.
-    public static Texture2D[] Backgrounds = new Texture2D[4];
-
-    public static Texture2D Cemetery;
-    public static Texture2D Crypt;
-    public static Texture2D Dungeon;
-    public static Texture2D Forest;
-    public static Texture2D Garden;
-    public static Texture2D Grassland;
-    public static Texture2D Ruins;
-    public static Texture2D Sewer;
-    public static Texture2D Temple;
-    public static Texture2D Village;
-
     public static SpriteFont DebugFont;
 
+    public static TextureRef Player = new TextureRef("sprites/ccg/ninja_female");
+
+    // Backgrounds are indexed by draw order; the first element should be drawn furthest back.
+    public static TextureRef[] Backgrounds = new TextureRef[] {
+      new TextureRef("backgrounds/szadiart/pf4/background1_day"),
+      new TextureRef("backgrounds/szadiart/pf4/background2a_day"),
+      new TextureRef("backgrounds/szadiart/pf4/background3_day"),
+      new TextureRef("backgrounds/szadiart/pf4/background4_day"),
+    };
+
+    public static TextureRef Cemetery = new TextureRef("tiles/anokolisa/cemetery");
+    public static TextureRef Crypt = new TextureRef("tiles/anokolisa/crypt");
+    public static TextureRef Dungeon = new TextureRef("tiles/anokolisa/dungeon");
+    public static TextureRef Forest = new TextureRef("tiles/anokolisa/forest");
+    public static TextureRef Garden = new TextureRef("tiles/anokolisa/garden");
+    public static TextureRef Grassland = new TextureRef("tiles/anokolisa/grassland");
+    public static TextureRef Ruins = new TextureRef("tiles/anokolisa/ruins");
+    public static TextureRef Sewer = new TextureRef("tiles/anokolisa/sewer");
+    public static TextureRef Temple = new TextureRef("tiles/anokolisa/temple");
+    public static TextureRef Village = new TextureRef("tiles/anokolisa/village");
+
     public static void Load(ContentManager content) {
-      Player = content.Load<Texture2D>("sprites/ccg/ninja_female");
-
-      Backgrounds[0] = content.Load<Texture2D>("backgrounds/szadiart/pf4/background1_day");
-      Backgrounds[1] = content.Load<Texture2D>("backgrounds/szadiart/pf4/background2a_day");
-      Backgrounds[2] = content.Load<Texture2D>("backgrounds/szadiart/pf4/background3_day");
-      Backgrounds[3] = content.Load<Texture2D>("backgrounds/szadiart/pf4/background4_day");
-
-      Cemetery = content.Load<Texture2D>("tiles/anokolisa/cemetery");
-      Crypt = content.Load<Texture2D>("tiles/anokolisa/crypt");
-      Dungeon = content.Load<Texture2D>("tiles/anokolisa/dungeon");
-      Forest = content.Load<Texture2D>("tiles/anokolisa/forest");
-      Garden = content.Load<Texture2D>("tiles/anokolisa/garden");
-      Grassland = content.Load<Texture2D>("tiles/anokolisa/grassland");
-      Ruins = content.Load<Texture2D>("tiles/anokolisa/ruins");
-      Sewer = content.Load<Texture2D>("tiles/anokolisa/sewer");
-      Temple = content.Load<Texture2D>("tiles/anokolisa/temple");
-      Village = content.Load<Texture2D>("tiles/anokolisa/village");
-
       DebugFont = content.Load<SpriteFont>("font");
+      TextureRef.LoadAll(content);
     }
   }
 }

Shared/World.cs

@@ -5,6 +5,7 @@ using System.Collections.Generic;
 using System.Linq;
 
 namespace SemiColinGames {
+
   class Terrain {
 
     public static Terrain FromSymbol(char symbol) {
@@ -17,123 +18,64 @@ namespace SemiColinGames {
 
     private readonly static Dictionary<char, Terrain> mapping = new Dictionary<char, Terrain>();
 
-    public static Terrain Grass = new Terrain('=', true);
+    public static Terrain Grass = new Terrain('=', true, Textures.Grassland, 3, 0);
-    public static Terrain GrassL = new Terrain('<', true);
+    public static Terrain GrassL = new Terrain('<', true, Textures.Grassland, 2, 0);
-    public static Terrain GrassR = new Terrain('>', true);
+    public static Terrain GrassR = new Terrain('>', true, Textures.Grassland, 4, 0);
-    public static Terrain Rock = new Terrain('.', true);
+    public static Terrain Rock = new Terrain('.', true, Textures.Grassland, 3, 1);
-    public static Terrain RockL = new Terrain('[', true);
+    public static Terrain RockL = new Terrain('[', true, Textures.Grassland, 1, 2);
-    public static Terrain RockR = new Terrain(']', true);
+    public static Terrain RockR = new Terrain(']', true, Textures.Grassland, 5, 2);
-    public static Terrain WaterL = new Terrain('~', false);
+    public static Terrain WaterL = new Terrain('~', false, Textures.Grassland, 9, 2);
-    public static Terrain WaterR = new Terrain('`', false);
+    public static Terrain WaterR = new Terrain('`', false, Textures.Grassland, 10, 2);
-    public static Terrain Block = new Terrain('X', true);
+    public static Terrain Block = new Terrain('X', true, Textures.Ruins, 2, 0);
-    public static Terrain Spike = new Terrain('^', true);
+    public static Terrain Spike = new Terrain('^', true, Textures.Grassland, 11, 8);
-    public static Terrain Wood = new Terrain('_', true);
+    public static Terrain Wood = new Terrain('_', true, Textures.Grassland, 10, 3);
-    public static Terrain WoodL = new Terrain('(', true);
+    public static Terrain WoodL = new Terrain('(', true, Textures.Grassland, 9, 3);
-    public static Terrain WoodR = new Terrain(')', true);
+    public static Terrain WoodR = new Terrain(')', true, Textures.Grassland, 12, 3);
-    public static Terrain WoodVert = new Terrain('|', false);
+    public static Terrain WoodVert = new Terrain('|', false, Textures.Grassland, 9, 5);
-    public static Terrain WoodVertL = new Terrain('/', false);
+    public static Terrain WoodVertL = new Terrain('/', false, Textures.Grassland, 9, 4);
-    public static Terrain WoodVertR = new Terrain('\\', false);
+    public static Terrain WoodVertR = new Terrain('\\', false, Textures.Grassland, 12, 4);
-    public static Terrain WoodBottom = new Terrain('v', false);
+    public static Terrain WoodBottom = new Terrain('v', false, Textures.Grassland, 10, 5);
-    public static Terrain FenceL = new Terrain('d', false);
+    public static Terrain FenceL = new Terrain('d', false, Textures.Grassland, 5, 4);
-    public static Terrain Fence = new Terrain('f', false);
+    public static Terrain Fence = new Terrain('f', false, Textures.Grassland, 6, 4);
-    public static Terrain FencePost = new Terrain('x', false);
+    public static Terrain FencePost = new Terrain('x', false, Textures.Grassland, 7, 4);
-    public static Terrain FenceR = new Terrain('b', false);
+    public static Terrain FenceR = new Terrain('b', false, Textures.Grassland, 8, 4);
-    public static Terrain VineTop = new Terrain('{', false);
+    public static Terrain VineTop = new Terrain('{', false, Textures.Ruins, 12, 5);
-    public static Terrain VineMid = new Terrain(';', false);
+    public static Terrain VineMid = new Terrain(';', false, Textures.Ruins, 12, 6);
-    public static Terrain VineBottom = new Terrain('}', false);
+    public static Terrain VineBottom = new Terrain('}', false, Textures.Ruins, 12, 7);
-    public static Terrain GrassTall = new Terrain('q', false);
+    public static Terrain GrassTall = new Terrain('q', false, Textures.Grassland, 13, 0);
-    public static Terrain GrassShort = new Terrain('w', false);
+    public static Terrain GrassShort = new Terrain('w', false, Textures.Grassland, 14, 0);
-    public static Terrain Shoots = new Terrain('e', false);
+    public static Terrain Shoots = new Terrain('e', false, Textures.Grassland, 15, 0);
-    public static Terrain Bush = new Terrain('r', false);
+    public static Terrain Bush = new Terrain('r', false, Textures.Grassland, 13, 2);
-    public static Terrain Mushroom = new Terrain('t', false);
+    public static Terrain Mushroom = new Terrain('t', false, Textures.Grassland, 17, 2);
 
     public bool IsObstacle { get; private set; }
+    public TextureRef Texture { get; private set; }
+    public Rectangle TextureSource { get; private set; }
 
-    private Terrain(char symbol, bool isObstacle) {
+    private Terrain(char symbol, bool isObstacle, TextureRef texture, int x, int y) {
       if (mapping.ContainsKey(symbol)) {
         throw new ArgumentException("already have a terrain with symbol " + symbol);
       }
-      IsObstacle = isObstacle;
       mapping[symbol] = this;
-    }
+      IsObstacle = isObstacle;
-  }
+      Texture = texture;
-
-  class TileFactory {
-
-    struct TextureSource {
-      public Texture2D texture;
-      public Rectangle source;
-
-      public TextureSource(Texture2D texture, Rectangle source) {
-        this.texture = texture;
-        this.source = source;
-      }
-    }
-
-    readonly Dictionary<Terrain, TextureSource> terrainToTexture;
-
-    public TileFactory() {
-      terrainToTexture = new Dictionary<Terrain, TextureSource>() {
-        { Terrain.GrassL, GetTextureSource(Textures.Grassland, 2, 0) },
-        { Terrain.Grass, GetTextureSource(Textures.Grassland, 3, 0) },
-        { Terrain.GrassR, GetTextureSource(Textures.Grassland, 4, 0) },
-        { Terrain.Rock, GetTextureSource(Textures.Grassland, 3, 1) },
-        { Terrain.RockL, GetTextureSource(Textures.Grassland, 1, 2) },
-        { Terrain.RockR, GetTextureSource(Textures.Grassland, 5, 2) },
-        { Terrain.WaterL, GetTextureSource(Textures.Grassland, 9, 2) },
-        { Terrain.WaterR, GetTextureSource(Textures.Grassland, 10, 2) },
-        { Terrain.Block, GetTextureSource(Textures.Ruins, 2, 0) },
-        { Terrain.Spike, GetTextureSource(Textures.Grassland, 11, 8) },
-        { Terrain.Wood, GetTextureSource(Textures.Grassland, 10, 3) },
-        { Terrain.WoodL, GetTextureSource(Textures.Grassland, 9, 3) },
-        { Terrain.WoodR, GetTextureSource(Textures.Grassland, 12, 3) },
-        { Terrain.WoodVert, GetTextureSource(Textures.Grassland, 9, 5) },
-        { Terrain.WoodVertL, GetTextureSource(Textures.Grassland, 9, 4) },
-        { Terrain.WoodVertR, GetTextureSource(Textures.Grassland, 12, 4) },
-        { Terrain.WoodBottom, GetTextureSource(Textures.Grassland, 10, 5) },
-        { Terrain.FenceL, GetTextureSource(Textures.Grassland, 5, 4) },
-        { Terrain.Fence, GetTextureSource(Textures.Grassland, 6, 4) },
-        { Terrain.FencePost, GetTextureSource(Textures.Grassland, 7, 4) },
-        { Terrain.FenceR, GetTextureSource(Textures.Grassland, 8, 4) },
-        { Terrain.VineTop, GetTextureSource(Textures.Ruins, 12, 5) },
-        { Terrain.VineMid, GetTextureSource(Textures.Ruins, 12, 6) },
-        { Terrain.VineBottom, GetTextureSource(Textures.Ruins, 12, 7) },
-        { Terrain.GrassTall, GetTextureSource(Textures.Grassland, 13, 0) },
-        { Terrain.GrassShort, GetTextureSource(Textures.Grassland, 14, 0) },
-        { Terrain.Shoots, GetTextureSource(Textures.Grassland, 15, 0) },
-        { Terrain.Bush, GetTextureSource(Textures.Grassland, 13, 2) },
-        { Terrain.Mushroom, GetTextureSource(Textures.Grassland, 17, 2) },
-      };
-    }
-
-    public Tile MakeTile(Terrain terrain, Rectangle position) {
-      TextureSource textureSource = terrainToTexture[terrain];
-      return new Tile(terrain, position, textureSource.texture, textureSource.source);
-    }
-
-    private TextureSource GetTextureSource(Texture2D texture, int x, int y) {
       int size = World.TileSize;
-      Rectangle position = new Rectangle(x * size, y * size, size, size);
+      TextureSource = new Rectangle(x * size, y * size, size, size);
-      return new TextureSource(texture, position);
     }
   }
   
   class Tile {
-    readonly Texture2D texture;
+    public Tile(Terrain terrain, Rectangle position) {
-    readonly Rectangle textureSource;
-
-    public Tile(Terrain terrain, Rectangle position, Texture2D texture, Rectangle textureSource) {
       Terrain = terrain;
       Position = position;
-      this.texture = texture;
-      this.textureSource = textureSource;
     }
 
     public Rectangle Position { get; private set; }
     public Terrain Terrain { get; private set; }
 
     public void Draw(SpriteBatch spriteBatch) {
-      spriteBatch.Draw(texture, Position.Location.ToVector2(), textureSource, Color.White);
+      spriteBatch.Draw(
+          Terrain.Texture.Get(), Position.Location.ToVector2(), Terrain.TextureSource, Color.White);
     }
   }
 
@@ -157,7 +99,6 @@ namespace SemiColinGames {
     }
 
     public World(string levelSpecification) {
-      TileFactory factory = new TileFactory();
       var tilesList = new List<Tile>();
       var decorationsList = new List<Tile>();
       string[] worldDesc = levelSpecification.Substring(1).Split('\n');
@@ -171,7 +112,7 @@ namespace SemiColinGames {
             Terrain terrain = Terrain.FromSymbol(key);
             if (terrain != null) {
               var position = new Rectangle(i * TileSize, j * TileSize, TileSize, TileSize);
-              Tile tile = factory.MakeTile(terrain, position);
+              Tile tile = new Tile(terrain, position);
               if (tile.Terrain.IsObstacle) {
                 tilesList.Add(tile);
               } else {