ModUtilities.java
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/*
* This file is part of LiteLoader.
* Copyright (C) 2012-16 Adam Mummery-Smith
* All Rights Reserved.
*/
package com.mumfrey.liteloader.util;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.Map;
import org.lwjgl.LWJGLException;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import com.mumfrey.liteloader.client.ducks.IMutableRegistry;
import com.mumfrey.liteloader.client.ducks.IRenderManager;
import com.mumfrey.liteloader.client.ducks.ITileEntityRendererDispatcher;
import com.mumfrey.liteloader.client.overlays.IMinecraft;
import com.mumfrey.liteloader.client.util.PrivateFieldsClient;
import com.mumfrey.liteloader.util.log.LiteLoaderLogger;
import net.minecraft.block.Block;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.entity.Render;
import net.minecraft.client.renderer.entity.RenderManager;
import net.minecraft.client.renderer.tileentity.TileEntityRendererDispatcher;
import net.minecraft.client.renderer.tileentity.TileEntitySpecialRenderer;
import net.minecraft.entity.Entity;
import net.minecraft.init.Blocks;
import net.minecraft.init.Items;
import net.minecraft.item.Item;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.util.ResourceLocation;
/**
* A small collection of useful functions for mods
*
* @author Adam Mummery-Smith
*/
public abstract class ModUtilities
{
/**
* @return true if FML is present in the current environment
*/
public static boolean fmlIsPresent()
{
return ObfuscationUtilities.fmlIsPresent();
}
public static void setWindowSize(int width, int height)
{
try
{
Minecraft mc = Minecraft.getMinecraft();
Display.setDisplayMode(new DisplayMode(width, height));
((IMinecraft)mc).onResizeWindow(width, height);
Display.setVSyncEnabled(mc.gameSettings.enableVsync);
}
catch (LWJGLException ex)
{
ex.printStackTrace();
}
}
/**
* Add a renderer map entry for the specified entity class
*
* @param entityClass
* @param renderer
*/
public static <T extends Entity> void addRenderer(Class<T> entityClass, Render<T> renderer)
{
RenderManager renderManager = Minecraft.getMinecraft().getRenderManager();
Map<Class<? extends Entity>, Render<? extends Entity>> entityRenderMap = ((IRenderManager)renderManager).getRenderMap();
if (entityRenderMap != null)
{
entityRenderMap.put(entityClass, renderer);
}
else
{
LiteLoaderLogger.warning("Attempted to set renderer %s for entity class %s but the operation failed",
renderer.getClass().getSimpleName(), entityClass.getSimpleName());
}
}
public static <T extends TileEntity> void addRenderer(Class<T> tileEntityClass, TileEntitySpecialRenderer<T> renderer)
{
TileEntityRendererDispatcher tileEntityRenderer = TileEntityRendererDispatcher.instance;
try
{
Map<Class<? extends TileEntity>, TileEntitySpecialRenderer<? extends TileEntity>> specialRendererMap
= ((ITileEntityRendererDispatcher)tileEntityRenderer).getSpecialRenderMap();
specialRendererMap.put(tileEntityClass, renderer);
renderer.setRendererDispatcher(tileEntityRenderer);
}
catch (Exception ex)
{
LiteLoaderLogger.warning("Attempted to set renderer %s for tile entity class %s but the operation failed",
renderer.getClass().getSimpleName(), tileEntityClass.getSimpleName());
}
}
/**
* Add a block to the blocks registry
*
* @param blockId Block ID to insert
* @param blockName Block identifier
* @param block Block to register
* @param force Force insertion even if the operation is blocked by FMl
*
* @deprecated Register blocks directly with the registry
*/
@SuppressWarnings("unchecked")
@Deprecated
public static void addBlock(int blockId, ResourceLocation blockName, Block block, boolean force)
{
boolean exists = Block.REGISTRY.containsKey(blockName);
Block existingBlock = Block.REGISTRY.getObject(blockName);
try
{
Block.REGISTRY.register(blockId, blockName, block);
}
catch (IllegalArgumentException ex)
{
if (!force) throw new IllegalArgumentException("Could not register block '" + blockName + "', the operation was blocked by FML.", ex);
if (Block.REGISTRY instanceof IMutableRegistry)
{
((IMutableRegistry<ResourceLocation, Block>)Block.REGISTRY).removeObjectFromRegistry(blockName);
Block.REGISTRY.register(blockId, blockName, block);
}
}
if (exists)
{
try
{
for (Field field : Blocks.class.getDeclaredFields())
{
field.setAccessible(true);
if (field.isAccessible() && Block.class.isAssignableFrom(field.getType()))
{
Block fieldValue = (Block)field.get(null);
if (fieldValue == existingBlock)
{
ModUtilities.setFinalStaticField(field, block);
}
}
}
}
catch (Exception ex)
{
ex.printStackTrace();
}
}
}
/**
* Add an item to the items registry
*
* @param itemId Item ID to insert
* @param itemName Item identifier
* @param item Item to register
* @param force Force insertion even if the operation is blocked by FMl
*
* @deprecated Register items directly with the registry
*/
@SuppressWarnings("unchecked")
@Deprecated
public static void addItem(int itemId, ResourceLocation itemName, Item item, boolean force)
{
boolean exists = Item.REGISTRY.containsKey(itemName);
Item existingItem = Item.REGISTRY.getObject(itemName);
try
{
Item.REGISTRY.register(itemId, itemName, item);
}
catch (IllegalArgumentException ex)
{
if (!force) throw new IllegalArgumentException("Could not register item '" + itemName + "', the operation was blocked by FML.", ex);
if (Block.REGISTRY instanceof IMutableRegistry)
{
((IMutableRegistry<ResourceLocation, Block>)Item.REGISTRY).removeObjectFromRegistry(itemName);
Item.REGISTRY.register(itemId, itemName, item);
}
}
if (exists)
{
try
{
for (Field field : Items.class.getDeclaredFields())
{
field.setAccessible(true);
if (field.isAccessible() && Item.class.isAssignableFrom(field.getType()))
{
Item fieldValue = (Item)field.get(null);
if (fieldValue == existingItem)
{
ModUtilities.setFinalStaticField(field, item);
}
}
}
}
catch (Exception ex) {}
}
}
@SuppressWarnings("unchecked")
public static void addTileEntity(String entityName, Class<? extends TileEntity> tileEntityClass)
{
try
{
Map<String, Class<? extends TileEntity>> nameToClassMap = PrivateFieldsClient.tileEntityNameToClassMap.get(null);
Map<Class<? extends TileEntity>, String> classToNameMap = PrivateFieldsClient.tileEntityClassToNameMap.get(null);
nameToClassMap.put(entityName, tileEntityClass);
classToNameMap.put(tileEntityClass, entityName);
}
catch (Exception ex)
{
ex.printStackTrace();
}
}
private static void setFinalStaticField(Field field, Object value)
throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException
{
Field modifiers = Field.class.getDeclaredField("modifiers");
modifiers.setAccessible(true);
modifiers.setInt(field, field.getModifiers() & ~Modifier.FINAL);
field.set(null, value);
}
}