Fixed grass block item being rendered with its side texture on top

src/main/java/xyz/pixelatedw/finalbeta/WyHelper.java

@@ -1,14 +1,25 @@
 package xyz.pixelatedw.finalbeta;
 
 import java.lang.management.ManagementFactory;
-import java.util.Random;
+import java.lang.reflect.Field;
 
+import net.minecraft.client.Minecraft;
 import net.minecraft.entity.player.Player;
 
 public class WyHelper {
 	
-	public static boolean isDebug()
+	public static Minecraft getInstance()  {
-	{
+		try {
+			Field f = Minecraft.class.getDeclaredField("instance");
+			f.setAccessible(true);
+			return (Minecraft) f.get(null);
+		} catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e) {
+			e.printStackTrace();
+		}
+		return null;
+	}
+	
+	public static boolean isDebug() {
 		return ManagementFactory.getRuntimeMXBean().getInputArguments().toString().indexOf("-agentlib:jdwp") > 0;
 	}
 
@@ -21,7 +32,8 @@ public class WyHelper {
 	}
 
 	public static void cheatCommand(Player player) {
-		Random rand = new Random();
+//		player.dropItem(new ItemInstance(Tile.SNOW));
+//		Random rand = new Random();
 //		player.level.playSound(player, "random.break", 1, (rand.nextFloat() - rand.nextFloat()) * 0.2F + 1.0F);
 		
 //		player.dropItem(new ItemInstance(ItemType.hatchetDiamond, 1), false);

src/main/java/xyz/pixelatedw/finalbeta/mixin/TileMixin.java

@@ -0,0 +1,26 @@
+package xyz.pixelatedw.finalbeta.mixin;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import net.minecraft.tile.Tile;
+
+@Mixin(Tile.class)
+public class TileMixin {
+
+	@Inject(method = "getTextureForSide(I)I", at = @At("HEAD"), cancellable = true)
+	public void getTextureForSide(int i, CallbackInfoReturnable<Integer> ci) {
+		Tile tile = (Tile) (Object) this;
+		if (tile.id == Tile.GRASS.id) {
+			if (i == 1) {
+				ci.setReturnValue(0);
+			} else if (i == 0) {
+				ci.setReturnValue(2);
+			} else {
+				ci.setReturnValue(tile.tex);
+			}
+		}
+	}
+}

src/main/java/xyz/pixelatedw/finalbeta/mixin/TileRendererMixin.java

@@ -1,11 +1,13 @@
 package xyz.pixelatedw.finalbeta.mixin;
 
+import org.lwjgl.opengl.GL11;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
+import net.minecraft.client.colour.GrassColour;
 import net.minecraft.client.render.Tessellator;
 import net.minecraft.client.render.TileRenderer;
 import net.minecraft.tile.Tile;
@@ -16,6 +18,55 @@ public class TileRendererMixin {
 	@Shadow
 	private int field_83;
 
+	// Grass block texture using side textures for top fix
+	@Inject(method = "method_48", at = @At("HEAD"), cancellable = true)
+	public void grassBlockRenderer(Tile arg, int i, float f, CallbackInfo ci) {
+		// Normal Blocks are rendered using this the 0 type, we're using this
+		// just as a safenet in case the tile is not grass
+		int type = arg.method_1621();
+		if (arg.id == Tile.GRASS.id && type == 0) {
+			Tessellator tess = Tessellator.INSTANCE;
+			TileRenderer renderer = (TileRenderer) (Object) this;
+
+			arg.method_1605();
+			GL11.glTranslatef(-0.5F, -0.5F, -0.5F);
+			tess.start();
+			tess.method_1697(0.0F, -1.0F, 0.0F);
+			renderer.method_46(arg, 0.0D, 0.0D, 0.0D, arg.getTextureForSide(0, i));
+			tess.draw();
+
+			// This bit controls the top texture specifically
+			float r = (GrassColour.getColour(0.96, 0.44) >> 16 & 255) / 255.0F;
+			float g = (GrassColour.getColour(0.96, 0.44) >> 8 & 255) / 255.0F;
+			float b = (GrassColour.getColour(0.96, 0.44) & 255) / 255.0F;
+			tess.start();
+			tess.method_1697(0.0F, 1.0F, 0.0F);
+			tess.colour(r * f, g * f, b * f);
+			renderer.method_55(arg, 0.0D, 0.0D, 0.0D, arg.getTextureForSide(1, i));
+			tess.draw();
+
+			tess.start();
+			tess.method_1697(0.0F, 0.0F, -1.0F);
+			renderer.method_61(arg, 0.0D, 0.0D, 0.0D, arg.getTextureForSide(2, i));
+			tess.draw();
+			tess.start();
+			tess.method_1697(0.0F, 0.0F, 1.0F);
+			renderer.method_65(arg, 0.0D, 0.0D, 0.0D, arg.getTextureForSide(3, i));
+			tess.draw();
+			tess.start();
+			tess.method_1697(-1.0F, 0.0F, 0.0F);
+			renderer.method_67(arg, 0.0D, 0.0D, 0.0D, arg.getTextureForSide(4, i));
+			tess.draw();
+			tess.start();
+			tess.method_1697(1.0F, 0.0F, 0.0F);
+			renderer.method_69(arg, 0.0D, 0.0D, 0.0D, arg.getTextureForSide(5, i));
+			tess.draw();
+			GL11.glTranslatef(0.5F, 0.5F, 0.5F);
+			ci.cancel();
+		}
+	}
+
+	// Torch rendering with a bottom texture fix
 	@Inject(method = "method_45", at = @At("HEAD"), cancellable = true)
 	public void torchRenderer(Tile arg, double x, double y, double z, double w, double h, CallbackInfo ci) {
 		Tessellator tess = Tessellator.INSTANCE;
@@ -42,38 +93,38 @@ public class TileRendererMixin {
 		double var34 = z + 0.5D;
 		double var36 = 0.0625D;
 		double var38 = 0.625D;
-		
+
 		tess.vertex(x + w * (1.0D - var38) - var36, y + var38, z + h * (1.0D - var38) - var36, var20, var22);
 		tess.vertex(x + w * (1.0D - var38) - var36, y + var38, z + h * (1.0D - var38) + var36, var20, var26);
 		tess.vertex(x + w * (1.0D - var38) + var36, y + var38, z + h * (1.0D - var38) + var36, var24, var26);
 		tess.vertex(x + w * (1.0D - var38) + var36, y + var38, z + h * (1.0D - var38) - var36, var24, var22);
-		
+
 		tess.vertex(x - var36, y + 1.0D, var32, u, v);
 		tess.vertex(x - var36 + w, y + 0.0D, var32 + h, u, v2);
 		tess.vertex(x - var36 + w, y + 0.0D, var34 + h, u2, v2);
 		tess.vertex(x - var36, y + 1.0D, var34, u2, v);
-		
+
 		tess.vertex(x + var36, y + 1.0D, var34, u, v);
 		tess.vertex(x + w + var36, y + 0.0D, var34 + h, u, v2);
 		tess.vertex(x + w + var36, y + 0.0D, var32 + h, u2, v2);
 		tess.vertex(x + var36, y + 1.0D, var32, u2, v);
-		
+
 		tess.vertex(var28, y + 1.0D, z + var36, u, v);
 		tess.vertex(var28 + w, y + 0.0D, z + var36 + h, u, v2);
 		tess.vertex(var30 + w, y + 0.0D, z + var36 + h, u2, v2);
 		tess.vertex(var30, y + 1.0D, z + var36, u2, v);
-		
+
 		tess.vertex(var30, y + 1.0D, z - var36, u, v);
 		tess.vertex(var30 + w, y + 0.0D, z - var36 + h, u, v2);
 		tess.vertex(var28 + w, y + 0.0D, z - var36 + h, u2, v2);
 		tess.vertex(var28, y + 1.0D, z - var36, u2, v);
-		
+
 		double u3 = u + 0.02734375D;
 		double v3 = v + 0.0434375D;
 		double u4 = u + 0.03515625D;
 		double v4 = v + 0.05125D;
 		double w2 = 0.0625D;
-		
+
 		tess.vertex(x + w * 1.0D - w2, y, z + h * 1.0D + w2, u3, v3);
 		tess.vertex(x + w * 1.0D - w2, y, z + h * 1.0D - w2, u3, v4);
 		tess.vertex(x + w * 1.0D + w2, y, z + h * 1.0D - w2, u4, v4);

src/main/resources/finalbeta.mixins.json

@@ -26,7 +26,8 @@
     "LivingEntityMixin",
     "FurnaceEntityMixin",
     "WorldRendererMixin",
-    "VideoSettingsScreenMixin"
+    "VideoSettingsScreenMixin",
+    "TileMixin"
   ],
   "injectors": {
     "defaultRequire": 1