Major Refactoring of Bootstrap Code (#75)

- Refactored boostrap code:
  * Completely reworked item/block/tile registration.
  * Fixed server side startup.
  * Fixed server side startup.
  * More documentation.
  * More heavy cleanup
  * More cleanups.
  * Major refactoring of state mapping and fixes a lot of other issue related to item rendering.
  * Fixes sky chest item models (no item TESR).
  * Only use CachingRotatingBakedModel for tile entities automatically.
  Fix default rotation of quartz pillar for item model.
  * Used method reference instead of lambda for ItemMeshDefinition for multiparts.
  * Removed unnecessary IHasSpecialItemModel
  * Removed unused IconReg class.
  * Updated resource pack version.

src/main/java/appeng/items/misc/ItemCrystalSeedRendering.java

@@ -0,0 +1,85 @@
+package appeng.items.misc;
+
+
+import com.google.common.collect.ImmutableList;
+
+import net.minecraft.client.renderer.ItemMeshDefinition;
+import net.minecraft.client.renderer.block.model.ModelResourceLocation;
+import net.minecraft.util.ResourceLocation;
+import net.minecraftforge.fml.relauncher.Side;
+import net.minecraftforge.fml.relauncher.SideOnly;
+
+import appeng.bootstrap.IItemRendering;
+import appeng.bootstrap.ItemRenderingCustomizer;
+
+
+public class ItemCrystalSeedRendering extends ItemRenderingCustomizer
+{
+
+	private static final ModelResourceLocation[] MODELS_CERTUS = {
+			new ModelResourceLocation( "appliedenergistics2:crystal_seed_certus" ),
+			new ModelResourceLocation( "appliedenergistics2:crystal_seed_certus2" ),
+			new ModelResourceLocation( "appliedenergistics2:crystal_seed_certus3" )
+	};
+	private static final ModelResourceLocation[] MODELS_FLUIX = {
+			new ModelResourceLocation( "appliedenergistics2:crystal_seed_fluix" ),
+			new ModelResourceLocation( "appliedenergistics2:crystal_seed_fluix2" ),
+			new ModelResourceLocation( "appliedenergistics2:crystal_seed_fluix3" )
+	};
+	private static final ModelResourceLocation[] MODELS_NETHER = {
+			new ModelResourceLocation( "appliedenergistics2:crystal_seed_nether" ),
+			new ModelResourceLocation( "appliedenergistics2:crystal_seed_nether2" ),
+			new ModelResourceLocation( "appliedenergistics2:crystal_seed_nether3" )
+	};
+
+	@Override
+	@SideOnly( Side.CLIENT )
+	public void customize( IItemRendering rendering )
+	{
+		rendering.variants( ImmutableList.<ResourceLocation>builder().add( MODELS_CERTUS ).add( MODELS_FLUIX ).add( MODELS_NETHER ).build() );
+		rendering.meshDefinition( getItemMeshDefinition() );
+	}
+
+	private ItemMeshDefinition getItemMeshDefinition()
+	{
+		return is ->
+		{
+			int damage = ItemCrystalSeed.getProgress( is );
+
+			// Split the damage value into crystal type and growth level
+			int type = damage / ItemCrystalSeed.SINGLE_OFFSET;
+			int level = ( damage % ItemCrystalSeed.SINGLE_OFFSET ) / ItemCrystalSeed.LEVEL_OFFSET;
+
+			// Determine which list of models to use based on the type of crystal
+			ModelResourceLocation[] models;
+			switch( type )
+			{
+				case 0:
+					models = MODELS_CERTUS;
+					break;
+				case 1:
+					models = MODELS_NETHER;
+					break;
+				case 2:
+					models = MODELS_FLUIX;
+					break;
+				default:
+					// We use this as the fallback for broken items
+					models = MODELS_CERTUS;
+					break;
+			}
+
+			// Return one of the 3 models based on the level
+			if( level < 0 )
+			{
+				level = 0;
+			}
+			else if( level >= models.length )
+			{
+				level = models.length - 1;
+			}
+
+			return models[level];
+		};
+	}
+}