ClientMethodHandles.java

package vazkii.botania.client.core.handler;

import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.reflect.Field;

import com.google.common.base.Throwables;

import net.minecraft.client.renderer.RenderGlobal;
import net.minecraft.client.renderer.entity.RenderManager;
import net.minecraftforge.fml.relauncher.ReflectionHelper;
import vazkii.botania.common.Botania;
import vazkii.botania.common.lib.LibObfuscation;

public final class ClientMethodHandles {

	public static final MethodHandle
	renderPosX_getter, renderPosY_getter, renderPosZ_getter, // RenderManager
	starGLCallList_getter, starVBO_getter, glSkyList_getter, skyVBO_getter; // RenderGlobal

	static {
		try {
			Field f = ReflectionHelper.findField(RenderManager.class, LibObfuscation.RENDERPOSX);
			f.setAccessible(true);
			renderPosX_getter = MethodHandles.publicLookup().unreflectGetter(f);

			f = ReflectionHelper.findField(RenderManager.class, LibObfuscation.RENDERPOSY);
			f.setAccessible(true);
			renderPosY_getter = MethodHandles.publicLookup().unreflectGetter(f);

			f = ReflectionHelper.findField(RenderManager.class, LibObfuscation.RENDERPOSZ);
			f.setAccessible(true);
			renderPosZ_getter = MethodHandles.publicLookup().unreflectGetter(f);

			f = ReflectionHelper.findField(RenderGlobal.class, LibObfuscation.STAR_GL_CALL_LIST);
			f.setAccessible(true);
			starGLCallList_getter = MethodHandles.publicLookup().unreflectGetter(f);

			f = ReflectionHelper.findField(RenderGlobal.class, LibObfuscation.STAR_VBO);
			f.setAccessible(true);
			starVBO_getter = MethodHandles.publicLookup().unreflectGetter(f);

			f = ReflectionHelper.findField(RenderGlobal.class, LibObfuscation.GL_SKY_LIST);
			f.setAccessible(true);
			glSkyList_getter = MethodHandles.publicLookup().unreflectGetter(f);

			f = ReflectionHelper.findField(RenderGlobal.class, LibObfuscation.SKY_VBO);
			f.setAccessible(true);
			skyVBO_getter = MethodHandles.publicLookup().unreflectGetter(f);
		} catch (IllegalAccessException e) {
			Botania.LOGGER.fatal("Couldn't initialize client methodhandles! Things will be broken!");
			e.printStackTrace();
			throw Throwables.propagate(e);
		}
	}

	private ClientMethodHandles() {}
}