Render snow variation of grass blocks

This also increases the average rainfall everywhere so that fucking
deserts are less common

TrueCraft.API/Logic/BlockDescriptor.cs

@@ -1,4 +1,5 @@
 using System;
+using TrueCraft.API.World;
 
 namespace TrueCraft.API.Logic
 {
@@ -8,6 +9,9 @@ namespace TrueCraft.API.Logic
         public byte Metadata;
         public byte BlockLight;
         public byte SkyLight;
+        // Optional
         public Coordinates3D Coordinates;
+        // Optional
+        public IChunk Chunk;
     }
 }

TrueCraft.Client/Rendering/Blocks/GrassRenderer.cs

@@ -3,6 +3,8 @@ using Microsoft.Xna.Framework.Graphics;
 using Microsoft.Xna.Framework;
 using TrueCraft.Core.Logic.Blocks;
 using TrueCraft.API.Logic;
+using TrueCraft.Core.World;
+using TrueCraft.API;
 
 namespace TrueCraft.Client.Rendering.Blocks
 {
@@ -13,11 +15,14 @@ namespace TrueCraft.Client.Rendering.Blocks
             BlockRenderer.RegisterRenderer(GrassBlock.BlockID, new GrassRenderer());
             for (int i = 0; i < Texture.Length; i++)
                 Texture[i] *= new Vector2(16f / 256f);
+            for (int i = 0; i < Texture.Length; i++)
+                SnowTexture[i] *= new Vector2(16f / 256f);
         }
 
         private static Vector2 TextureMap = new Vector2(0, 0);
         private static Vector2 EndsTexture = new Vector2(2, 0);
         private static Vector2 SideTexture = new Vector2(3, 0);
+        private static Vector2 SideTextureSnow = new Vector2(4, 4);
         private static Vector2[] Texture =
         {
             // Positive Z
@@ -51,13 +56,54 @@ namespace TrueCraft.Client.Rendering.Blocks
             EndsTexture,
             EndsTexture + Vector2.UnitX,
         };
+        private static Vector2[] SnowTexture =
+        {
+            // Positive Z
+            SideTextureSnow + Vector2.UnitX + Vector2.UnitY,
+            SideTextureSnow + Vector2.UnitY,
+            SideTextureSnow,
+            SideTextureSnow + Vector2.UnitX,
+            // Negative Z
+            SideTextureSnow + Vector2.UnitX + Vector2.UnitY,
+            SideTextureSnow + Vector2.UnitY,
+            SideTextureSnow,
+            SideTextureSnow + Vector2.UnitX,
+            // Positive X
+            SideTextureSnow + Vector2.UnitX + Vector2.UnitY,
+            SideTextureSnow + Vector2.UnitY,
+            SideTextureSnow,
+            SideTextureSnow + Vector2.UnitX,
+            // Negative X
+            SideTextureSnow + Vector2.UnitX + Vector2.UnitY,
+            SideTextureSnow + Vector2.UnitY,
+            SideTextureSnow,
+            SideTextureSnow + Vector2.UnitX,
+            // Positive Y
+            TextureMap + Vector2.UnitX + Vector2.UnitY,
+            TextureMap + Vector2.UnitY,
+            TextureMap,
+            TextureMap + Vector2.UnitX,
+            // Negative Y
+            EndsTexture + Vector2.UnitX + Vector2.UnitY,
+            EndsTexture + Vector2.UnitY,
+            EndsTexture,
+            EndsTexture + Vector2.UnitX,
+        };
 
         public static readonly Color BiomeColor = new Color(105, 169, 63);
 
-        public override VertexPositionNormalColorTexture[] Render(BlockDescriptor descriptor, Vector3 offset,
+        public override VertexPositionNormalColorTexture[] Render(BlockDescriptor descriptor, Microsoft.Xna.Framework.Vector3 offset,
             Tuple<int, int> textureMap, int indiciesOffset, out int[] indicies)
         {
-            var cube = CreateUniformCube(offset, Texture, indiciesOffset, out indicies, Color.White);
+            var texture = Texture;
+            if (descriptor.Coordinates.Y < World.Height)
+            {
+                if (descriptor.Chunk.GetBlockID(descriptor.Coordinates + Coordinates3D.Up) == SnowfallBlock.BlockID)
+                {
+                    texture = SnowTexture;
+                }
+            }
+            var cube = CreateUniformCube(offset, texture, indiciesOffset, out indicies, Color.White);
             // Apply biome colors to top of cube
             for (int i = (int)(CubeFace.PositiveY) * 4; i < (int)(CubeFace.PositiveY) * 4 + 4; i++)
             {

TrueCraft.Client/Rendering/ChunkRenderer.cs

@@ -131,7 +131,8 @@ namespace TrueCraft.Client.Rendering
                     Metadata = chunk.GetMetadata(coords),
                     BlockLight = chunk.GetBlockLight(coords),
                     SkyLight = chunk.GetSkyLight(coords),
-                    Coordinates = coords
+                    Coordinates = coords,
+                    Chunk = chunk.Chunk
                 };
                 var provider = BlockRepository.GetBlockProvider(descriptor.ID);
                 if (provider.RenderOpaque)

TrueCraft.Client/TrueCraft.Client.csproj

@@ -101,6 +101,7 @@
     <Compile Include="Rendering\Blocks\SugarcaneRenderer.cs" />
     <Compile Include="Rendering\Blocks\VegitationRenderer.cs" />
     <Compile Include="Rendering\VertexPositionNormalColorTexture.cs" />
+    <Compile Include="Rendering\Blocks\WheatRenderer.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>

TrueCraft.Core/Logic/Blocks/SnowBlock.cs

@@ -71,6 +71,8 @@ namespace TrueCraft.Core.Logic.Blocks
 
         public override string DisplayName { get { return "Snow"; } }
 
+        public override TrueCraft.API.BoundingBox? BoundingBox { get { return null; } }
+
         public override Tuple<int, int> GetTextureMap(byte metadata)
         {
             return new Tuple<int, int>(2, 4);

TrueCraft.Core/World/BiomeMap.cs

@@ -24,7 +24,7 @@ namespace TrueCraft.Core.World
             TempNoise.Octaves = 2;
             TempNoise.Lacunarity = 1.3;
             RainNoise.Frequency = 0.03;
-            RainNoise.Octaves = 2;
+            RainNoise.Octaves = 3;
             RainNoise.Amplitude = 5;
             RainNoise.Lacunarity = 1.7;
             TempNoise.Seed = seed;