Make fence gates detect modded walls

src/main/java/jss/notfine/mixins/early/minecraft/faceculling/MixinRenderBlocks.java

@@ -2,11 +2,15 @@
 
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockFence;
+import net.minecraft.block.BlockWall;
 import net.minecraft.client.renderer.RenderBlocks;
+import net.minecraft.init.Blocks;
 import net.minecraft.world.IBlockAccess;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Overwrite;
 import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
 
 @Mixin(value = RenderBlocks.class)
 public abstract class MixinRenderBlocks {
@@ -65,6 +69,22 @@ public boolean renderBlockFence(BlockFence fence, int x, int y, int z) {
         return true;
     }
 
+    /**
+     * @author jss2a98aj
+     * @reason Fix modded wall detection
+     */
+    @Redirect(
+        method = "renderBlockFenceGate(Lnet/minecraft/block/BlockFenceGate;III)Z",
+        at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/world/IBlockAccess;getBlock(III)Lnet/minecraft/block/Block;"
+        ),
+        expect = 4
+    )
+    Block detectModdedWalls(IBlockAccess world, int x, int y, int z) {
+        return world.getBlock(x, y, z) instanceof BlockWall ? Blocks.cobblestone_wall : null;
+    }
+
     @Shadow public IBlockAccess blockAccess;
     @Shadow public boolean field_152631_f;
     @Shadow public abstract void setRenderBounds(double minX, double minY, double minZ, double maxX, double maxY, double maxZ);