implement biome color

src/js/net/minecraft/client/world/World.js

@@ -485,8 +485,12 @@ export default class World {
         return MathHelper.calculateCelestialAngle(this.time, partialTicks);
     }
 
-    getTemperature(x, z) {
-        return 1.24;
+    getTemperature(x, y, z) {
+        return 0.75; // TODO implement biomes
+    }
+
+    getHumidity(x, y, z) {
+        return 0.85; // TODO implement biomes
     }
 
     getSkyColor(x, z, partialTicks) {

src/js/net/minecraft/client/world/block/Block.js

@@ -48,6 +48,10 @@ export default class Block {
         return typeId === 0 || !Block.getById(typeId).isSolid();
     }
 
+    getColor(world, x, y, z, face) {
+        return 0xffffff;
+    }
+
     getLightValue() {
         return 0;
     }

src/js/net/minecraft/client/world/block/type/BlockGrass.js

@@ -10,6 +10,22 @@ export default class BlockGrass extends Block {
         this.sound = Block.sounds.grass;
     }
 
+    getColor(world, x, y, z, face) {
+        // Only top face has a biome color
+        if (face !== EnumBlockFace.TOP) {
+            return 0xFFFFFF;
+        }
+
+        // Inventory items have a default color
+        if (world === null) {
+            return 0x7cbd6b;
+        }
+
+        let temperature = world.getTemperature(x, y, z);
+        let humidity = world.getHumidity(x, y, z);
+        return world.minecraft.grassColorizer.getColor(temperature, humidity);
+    }
+
     getTextureForFace(face) {
         switch (face) {
             case EnumBlockFace.TOP:

src/js/net/minecraft/client/world/block/type/BlockLeave.js

@@ -9,6 +9,17 @@ export default class BlockLeave extends Block {
         this.sound = Block.sounds.grass;
     }
 
+    getColor(world, x, y, z, face) {
+        // Inventory items have a default color
+        if (world === null) {
+            return 0 << 16 | 255 << 8 | 0;
+        }
+
+        let temperature = world.getTemperature(x, y, z);
+        let humidity = world.getHumidity(x, y, z);
+        return world.minecraft.grassColorizer.getColor(temperature, humidity);
+    }
+
     getOpacity() {
         return 0.3;
     }