resolved culling issues + crude heater voxel shape

src/main/java/com/simibubi/create/AllShapes.java

@@ -114,6 +114,10 @@ public class AllShapes {
 	BASIN_BLOCK_SHAPE = shape(0, 2, 0, 16, 13, 16).erase(2, 5, 2, 14, 14, 14)
 		.add(2, 0, 2, 14, 2, 14)
 		.build(), 
+		HEATER_BLOCK_SHAPE =
+			shape(2, 0, 2, 14, 16, 14).add(0, 0, 0, 16, 2, 16)
+				.erase(3, 5, 3, 13, 16, 13)
+				.build(),
 		CRUSHING_WHEEL_COLLISION_SHAPE = cuboid(0, 0, 0, 16, 22, 16),
 		MECHANICAL_PROCESSOR_SHAPE = shape(VoxelShapes.fullCube()).erase(4, 0, 4, 12, 16, 12)
 			.build(),

src/main/java/com/simibubi/create/content/contraptions/processing/HeaterBlock.java

@@ -3,6 +3,7 @@ package com.simibubi.create.content.contraptions.processing;
 import javax.annotation.Nullable;
 import javax.annotation.ParametersAreNonnullByDefault;
 
+import com.simibubi.create.AllShapes;
 import com.simibubi.create.AllTileEntities;
 import com.simibubi.create.foundation.block.ITE;
 
@@ -20,6 +21,8 @@ import net.minecraft.util.ActionResultType;
 import net.minecraft.util.Hand;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.BlockRayTraceResult;
+import net.minecraft.util.math.shapes.ISelectionContext;
+import net.minecraft.util.math.shapes.VoxelShape;
 import net.minecraft.world.IBlockReader;
 import net.minecraft.world.World;
 
@@ -74,9 +77,15 @@ public class HeaterBlock extends Block implements ITE<HeaterTileEntity> {
 	@Override
 	public BlockState getStateForPlacement(BlockItemUseContext context) {
 		ItemStack item = context.getItem();
-		return super.getStateForPlacement(context).with(HAS_BLAZE, item.hasTag() && item.getTag()
+		BlockState state = super.getStateForPlacement(context);
-			.contains("has_blaze")
+		return (state != null ? state : getDefaultState()).with(HAS_BLAZE,
-			&& item.getTag()
+			item.hasTag() && item.getTag() != null && item.getTag()
+				.contains("has_blaze") && item.getTag()
 					.getBoolean("has_blaze"));
 	}
+
+	@Override
+	public VoxelShape getShape(BlockState state, IBlockReader reader, BlockPos pos, ISelectionContext context) {
+		return AllShapes.HEATER_BLOCK_SHAPE;
+	}
 }

src/main/java/com/simibubi/create/content/contraptions/processing/HeaterTileEntity.java

@@ -7,6 +7,7 @@ import com.simibubi.create.foundation.tileEntity.TileEntityBehaviour;
 
 import net.minecraft.block.Block;
 import net.minecraft.item.ItemStack;
+import net.minecraft.item.Items;
 import net.minecraft.nbt.CompoundNBT;
 import net.minecraft.tileentity.TileEntityType;
 import net.minecraftforge.common.ForgeHooks;
@@ -64,13 +65,15 @@ public class HeaterTileEntity extends SmartTileEntity {
 	}
 
 	boolean tryUpdateFuel(ItemStack itemStack) {
-		int burnTime = itemStack.getItem()
+		int burnTime = itemStack.getItem() == Items.EGG ? 150 : itemStack.getItem()
 			.getBurnTime(itemStack);
-
 		if (burnTime == -1)
 			burnTime = ForgeHooks.getBurnTime(itemStack);
-		int newFuelLevel = (burnTime > burnTimeRemaining ? 1 : 0); // todo: + (itemStack.getItem() == AllItems.SUPER_SPECIAL_FUEL.get() ? 1 : 0);
+		if (burnTime <= 0)
-		if (newFuelLevel <= fuelLevel) {
+			return false;
+		
+		int newFuelLevel = 1; // todo: + (itemStack.getItem() == AllItems.SUPER_SPECIAL_FUEL.get() ? 1 : 0);
+		if (newFuelLevel < fuelLevel ^ burnTime <= burnTimeRemaining) {
 			return false;
 		}
 		burnTimeRemaining = burnTime;
@@ -87,10 +90,8 @@ public class HeaterTileEntity extends SmartTileEntity {
 		int newHeatLevel = 1 + fuelLevel;
 		if (newHeatLevel != bufferedHeatLevel) {
 			bufferedHeatLevel = newHeatLevel;
-			// Block block = getBlockState().getBlock();
-			// if (block instanceof HeaterBlock)
-			// ((HeaterBlock) block).setLightLevel();
 			markDirty();
+			if(world != null)
 				sendData();
 		}
 	}