% Rewrote the Preloader mod to now be a dummy mod.

+ Added ASM usage to Preloader.
+ MC Version annotations to both GT++ and it's child mod GT++ Dark world.

4 files changed, 297 insertions, 0 deletions

diff --git a/src/Java/gtPlusPlus/preloader/asm/Modify_OreDict.java b/src/Java/gtPlusPlus/preloader/asm/Modify_OreDict.java
new file mode 100644
index 0000000000..b4a8bf5c00
--- /dev/null
+++ b/src/Java/gtPlusPlus/preloader/asm/Modify_OreDict.java
@@ -0,0 +1,93 @@
+package gtPlusPlus.preloader.asm;
+
+import java.lang.reflect.Field;
+import java.util.*;
+
+import com.google.common.collect.Lists;
+
+import cpw.mods.fml.common.FMLLog;
+import cpw.mods.fml.common.Loader;
+import cpw.mods.fml.common.registry.GameData;
+import gtPlusPlus.core.util.reflect.ReflectionUtils;
+import net.minecraft.item.ItemStack;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.oredict.OreDictionary;
+
+@SuppressWarnings("unchecked")
+public class Modify_OreDict extends OreDictionary{
+
+	static Field stack;
+	static Field id;
+
+    private static Map<Integer, List<Integer>> stackToId; // Calculated from 128 * 0.75
+    private static List<ArrayList<ItemStack>> idToStack; //ToDo: Unqualify to List when possible {1.8}
+	
+    
+    static {
+    	try {
+			stack = ReflectionUtils.getField(OreDictionary.class, "stackToId");
+	    	id = ReflectionUtils.getField(OreDictionary.class, "idToStack");
+	    	stackToId = (Map<Integer, List<Integer>>) stack.get(OreDictionary.class);
+	    	idToStack = (List<ArrayList<ItemStack>>) stack.get(OreDictionary.class);
+		}
+		catch (NoSuchFieldException | IllegalArgumentException | IllegalAccessException e) {}
+    }
+
+	//Utils.LOG_INFO("O-"+(byte) nameField.get(clazz) + " | "+newValue);
+    
+	/**
+     * Registers a ore item into the dictionary.
+     * Raises the registerOre function in all registered handlers.
+     *
+     * @param name The name of the ore
+     * @param id The ID of the ore
+     * @param ore The ore's ItemStack
+     */
+    private static void registerOreImpl(String name, ItemStack ore)
+    {
+        if (name == null || name.isEmpty() || "Unknown".equals(name)) return; //prevent bad IDs.
+        if (ore == null || ore.getItem() == null)
+        {
+            FMLLog.bigWarning("Invalid registration attempt for an Ore Dictionary item with name %s has occurred. The registration has been denied to prevent crashes. The mod responsible for the registration needs to correct this.", name);
+            return; //prevent bad ItemStacks.
+        }
+
+        int oreID = getOreID(name);
+        // HACK: use the registry name's ID. It is unique and it knows about substitutions. Fallback to a -1 value (what Item.getIDForItem would have returned) in the case where the registry is not aware of the item yet
+        // IT should be noted that -1 will fail the gate further down, if an entry already exists with value -1 for this name. This is what is broken and being warned about.
+        // APPARENTLY it's quite common to do this. OreDictionary should be considered alongside Recipes - you can't make them properly until you've registered with the game.
+        String registryName = ore.getItem().delegate.name();
+        int hash;
+        if (registryName == null)
+        {
+            FMLLog.bigWarning("A broken ore dictionary registration with name %s has occurred. It adds an item (type: %s) which is currently unknown to the game registry. This dictionary item can only support a single value when"
+                    + " registered with ores like this, and NO I am not going to turn this spam off. Just register your ore dictionary entries after the GameRegistry.\n"
+                    + "TO USERS: YES this is a BUG in the mod "+Loader.instance().activeModContainer().getName()+" report it to them!", name, ore.getItem().getClass());
+            hash = -1;
+        }
+        else
+        {
+            hash = GameData.getItemRegistry().getId(registryName);
+        }
+        if (ore.getItemDamage() != WILDCARD_VALUE)
+        {
+            hash |= ((ore.getItemDamage() + 1) << 16); // +1 so 0 is significant
+        }
+
+        //Add things to the baked version, and prevent duplicates
+        List<Integer> ids = stackToId.get(hash);
+        if (ids != null && ids.contains(oreID)) return;
+        if (ids == null)
+        {
+            ids = Lists.newArrayList();
+            stackToId.put(hash, ids);
+        }
+        ids.add(oreID);
+
+        //Add to the unbaked version
+        ore = ore.copy();
+        idToStack.get(oreID).add(ore);
+        MinecraftForge.EVENT_BUS.post(new OreRegisterEvent(name, ore));
+    }
+	
+}
diff --git a/src/Java/gtPlusPlus/preloader/asm/Preloader_ClassTransformer.java b/src/Java/gtPlusPlus/preloader/asm/Preloader_ClassTransformer.java
new file mode 100644
index 0000000000..330aef318a
--- /dev/null
+++ b/src/Java/gtPlusPlus/preloader/asm/Preloader_ClassTransformer.java
@@ -0,0 +1,88 @@
+package gtPlusPlus.preloader.asm;
+
+import static org.objectweb.asm.Opcodes.ALOAD;
+import static org.objectweb.asm.Opcodes.INVOKESTATIC;
+
+import java.util.Iterator;
+
+import org.objectweb.asm.*;
+import org.objectweb.asm.tree.*;
+
+import gtPlusPlus.core.util.Utils;
+import net.minecraft.launchwrapper.IClassTransformer;
+
+public class Preloader_ClassTransformer implements IClassTransformer {
+
+	@Override
+	public byte[] transform(String name, String transformedName, byte[] basicClass) {
+
+		/*if (name.equals("abq")) {
+			Utils.LOG_ASM("[ASM] INSIDE OBFUSCATED EXPLOSION TRANSFORMER ABOUT TO PATCH: " + name);
+			return patchClassASM(name, basicClass, true);
+		}
+
+		else if (name.equals("net.minecraftforge.oredict.OreDictionary")) {
+			Utils.LOG_ASM("[ASM] INSIDE OREDICT TRANSFORMER ABOUT TO PATCH: " + name);
+			return patchClassASM(name, basicClass, false);
+		}*/
+		return basicClass;
+	}
+
+	public byte[] patchClassASM(String name, byte[] bytes, boolean obfuscated) {
+
+		String targetMethodName = "";
+
+		if(obfuscated == true)
+			targetMethodName ="a";
+		else
+			targetMethodName ="registerOreImpl";
+
+
+		//set up ASM class manipulation stuff. Consult the ASM docs for details
+		ClassNode classNode = new ClassNode();
+		ClassReader classReader = new ClassReader(bytes);
+		classReader.accept(classNode, 0);
+
+
+
+		//Now we loop over all of the methods declared inside the Explosion class until we get to the targetMethodName "doExplosionB"
+
+		// find method to inject into
+		Iterator<MethodNode> methods = classNode.methods.iterator();
+		while(methods.hasNext())
+		{
+			MethodNode m = methods.next();
+			Utils.LOG_ASM("[ASM] Method Name: "+m.name + " Desc:" + m.desc);
+
+			//Check if this is doExplosionB and it's method signature is (Z)V which means that it accepts a boolean (Z) and returns a void (V)
+			if ((m.name.equals(targetMethodName) && m.desc.equals("(Ljava/lang/String;Lnet/minecraft/item/ItemStack;)V")))
+			{
+				Utils.LOG_ASM("[ASM] Inside target method!");
+				// find interesting instructions in method, there is a single FDIV instruction we use as target
+				
+				// make new instruction list
+				InsnList toInject = new InsnList();
+
+				//toInject.add(new VarInsnNode(ALOAD, 0));
+				
+				toInject.add(new VarInsnNode(ALOAD, 1));
+				toInject.add(new MethodInsnNode(INVOKESTATIC, "gtPlusPlus/preloader/Preloader_GT_OreDict", "removeCircuit", "(Lnet/minecraft/item/ItemStack;)Z, false"));
+				toInject.add(new VarInsnNode(Opcodes.IFEQ, 1));
+				toInject.add(new VarInsnNode(Opcodes.RETURN, 0));
+				//toInject.add(new VarInsnNode(org.objectweb.asm.Opcodes.LABEL END, 0));
+
+				// inject new instruction list into method instruction list
+				m.instructions.insert(toInject);
+
+				Utils.LOG_ASM("Patching Complete!");
+				break;
+			}
+		}
+
+		//ASM specific for cleaning up and returning the final bytes for JVM processing.
+		ClassWriter writer = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
+		classNode.accept(writer);
+		return writer.toByteArray();
+	}
+
+}
diff --git a/src/Java/gtPlusPlus/preloader/asm/Preloader_DummyContainer.java b/src/Java/gtPlusPlus/preloader/asm/Preloader_DummyContainer.java
new file mode 100644
index 0000000000..74289f2cf3
--- /dev/null
+++ b/src/Java/gtPlusPlus/preloader/asm/Preloader_DummyContainer.java
@@ -0,0 +1,78 @@
+package gtPlusPlus.preloader.asm;
+
+import java.io.File;
+import java.util.Arrays;
+
+import com.google.common.eventbus.EventBus;
+import com.google.common.eventbus.Subscribe;
+
+import cpw.mods.fml.common.*;
+import cpw.mods.fml.common.Mod.EventHandler;
+import cpw.mods.fml.common.event.*;
+import gtPlusPlus.core.util.Utils;
+import gtPlusPlus.preloader.CORE_Preloader;
+import net.minecraftforge.common.config.Configuration;
+
+public class Preloader_DummyContainer extends DummyModContainer {
+
+	public Preloader_DummyContainer() {
+
+		super(new ModMetadata());
+		ModMetadata meta = getMetadata();
+		meta.modId = CORE_Preloader.MODID;
+		meta.name = CORE_Preloader.NAME;
+		meta.version = CORE_Preloader.VERSION;
+		meta.credits = "Roll Credits ...";
+		meta.authorList = Arrays.asList("Alkalus");
+		meta.description = "";
+		meta.url = "";
+		meta.updateUrl = "";
+		meta.screenshots = new String[0];
+		meta.logoFile = "";
+		meta.dependencies = CORE_Preloader.DEPENDENCIES;
+
+	}
+	
+	@Override
+	public boolean registerBus(EventBus bus, LoadController controller) {
+		bus.register(this);
+		return true;
+	}
+
+	@Subscribe
+	public void modConstruction(FMLConstructionEvent evt){
+
+	}
+
+	@Subscribe
+	public void init(FMLInitializationEvent evt) {
+
+	}
+	
+	@EventHandler
+	public void load(final FMLInitializationEvent e) {
+		Utils.LOG_INFO("Begin resource allocation for " + CORE_Preloader.MODID + " V" + CORE_Preloader.VERSION);
+	}
+	
+	@Subscribe
+	public void preInit(FMLPreInitializationEvent event) {
+		Utils.LOG_INFO("Loading " + CORE_Preloader.MODID + " V" + CORE_Preloader.VERSION);
+		// Handle GT++ Config
+		handleConfigFile(event);
+	}
+
+	@Subscribe
+	public void postInit(FMLPostInitializationEvent evt) {
+		Utils.LOG_INFO("Finished loading GT++ Pre-Loader.");
+	}
+	
+	public static void handleConfigFile(final FMLPreInitializationEvent event) {
+		final Configuration config = new Configuration(
+				new File(event.getModConfigurationDirectory(), "GTplusplus/GTplusplus.cfg"));
+		config.load();
+
+		// Circuits
+		CORE_Preloader.enableOldGTcircuits = config.getBoolean("enableOldGTcircuits", "gregtech", false,
+				"Restores circuits and their recipes from Pre-5.09.28 times.");
+	}
+}
\ No newline at end of file
diff --git a/src/Java/gtPlusPlus/preloader/asm/Preloader_FMLLoadingPlugin.java b/src/Java/gtPlusPlus/preloader/asm/Preloader_FMLLoadingPlugin.java
new file mode 100644
index 0000000000..9070e880e6
--- /dev/null
+++ b/src/Java/gtPlusPlus/preloader/asm/Preloader_FMLLoadingPlugin.java
@@ -0,0 +1,38 @@
+package gtPlusPlus.preloader.asm;
+
+import java.util.Map;
+
+import cpw.mods.fml.relauncher.IFMLLoadingPlugin;
+import cpw.mods.fml.relauncher.IFMLLoadingPlugin.MCVersion;
+
+@MCVersion(value = "1.7.10")
+public class Preloader_FMLLoadingPlugin implements IFMLLoadingPlugin  {
+
+	@Override
+	public String getAccessTransformerClass() {
+		return null;
+	}
+
+	@Override
+	public String[] getASMTransformerClass() {
+		//This will return the name of the class
+		return new String[]{Preloader_ClassTransformer.class.getName()};
+	}
+
+	@Override
+	public String getModContainerClass() {
+		//This is the name of our dummy container
+		return Preloader_DummyContainer.class.getName();
+	}
+
+	@Override
+	public String getSetupClass() {
+		return null;
+	}
+
+	@Override
+	public void injectData(Map<String, Object> data) {
+
+	}
+
+}
\ No newline at end of file