first code commit

2014-06-25 23:27:17 +02:00
parent 554e06176b
commit 3bd402b964
33 changed files with 1591 additions and 0 deletions
--- a/src/main/java/mods/betterfoliage/loader/BetterFoliageTransformer.java
+++ b/src/main/java/mods/betterfoliage/loader/BetterFoliageTransformer.java
@@ -0,0 +1,63 @@
+package mods.betterfoliage.loader;
+
+import mods.betterfoliage.common.util.DeobfNames;
+import net.minecraft.launchwrapper.IClassTransformer;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.objectweb.asm.ClassReader;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.tree.ClassNode;
+import org.objectweb.asm.tree.MethodInsnNode;
+import org.objectweb.asm.tree.MethodNode;
+
+/** Transformer overriding the first line of RenderBlocks.renderBlockByRenderType()
+ * with the following instruction:<br/><br/>
+ * int l = mods.betterfoliage.BlockRenderTypeOverride.getRenderType(block);<br/><br/>
+ * 
+ * @author octarine-noise
+ */
+public class BetterFoliageTransformer implements IClassTransformer {
+
+	Logger log = LogManager.getLogger("BetterFoliageCore");
+	
+	public byte[] transform(String name, String transformedName, byte[] basicClass) {
+    	if (basicClass == null) return null;
+		
+		if (transformedName.equals("net.minecraft.client.renderer.RenderBlocks")) {
+			log.info(String.format("Found class %s", transformedName));
+			ClassNode classNode = new ClassNode();
+	        ClassReader classReader = new ClassReader(basicClass);
+	        classReader.accept(classNode, 0);
+	        
+			for (MethodNode mn : classNode.methods) {
+				boolean found = false;
+				boolean obf = false;
+				if (mn.desc.equals(DeobfNames.RB_RBBRT_SIG_MCP) && (mn.name.equals(DeobfNames.RB_RBBRT_NAME_MCP))) {
+					found = true;
+				} else if (mn.desc.equals(DeobfNames.RB_RBBRT_SIG_OBF) && (mn.name.equals(DeobfNames.RB_RBBRT_NAME_OBF))) {
+					found = true;
+					obf = true;
+				}
+				if (found) {
+					log.info("Overriding RenderBlocks.renderBlockByRenderType()");
+					int invokeNodeIdx = 0;
+					for (int idx = 0; idx < mn.instructions.size(); idx++) if (mn.instructions.get(idx) instanceof MethodInsnNode) {
+						invokeNodeIdx = idx;
+						break;
+					}
+					mn.instructions.remove(mn.instructions.get(invokeNodeIdx));
+					MethodInsnNode replacement = new MethodInsnNode(Opcodes.INVOKESTATIC, "mods/betterfoliage/BlockRenderTypeOverride", "getRenderType", obf ? DeobfNames.BRTO_GRT_SIG_OBF : DeobfNames.BRTO_GRT_SIG_MCP);
+					mn.instructions.insertBefore(mn.instructions.get(invokeNodeIdx), replacement);
+					break;
+				}
+			}
+			
+	        ClassWriter writer = new ClassWriter(0);
+	        classNode.accept(writer);
+	        return writer.toByteArray();
+		}
+		return basicClass;
+	}
+}