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Replace camera roll CT with mixin magic

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This commit is contained in:
johni0702
2015-08-05 11:42:43 +02:00
parent 4efdc0ebd0
commit 83e5344448
3 changed files with 13 additions and 83 deletions
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82
src/main/java/eu/crushedpixel/replaymod/coremod/CameraRollCT.java
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@@ -1,82 +0,0 @@
package eu.crushedpixel.replaymod.coremod;
import net.minecraft.launchwrapper.IClassTransformer;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.tree.*;
import java.util.ListIterator;
import static org.objectweb.asm.Opcodes.*;
public class CameraRollCT implements IClassTransformer {
private static final String REPLAY_HANDLER = "eu/crushedpixel/replaymod/replay/ReplayHandler";
private static final String CLASS_NAME = "net.minecraft.client.renderer.EntityRenderer";
@Override
public byte[] transform(String name, String transformedName, byte[] bytes) {
if (CLASS_NAME.equals(transformedName)) {
return transform(bytes, name.equals(transformedName) ? "orientCamera" : "g");
}
return bytes;
}
private byte[] transform(byte[] bytes, String name_orientCamera) {
ClassReader classReader = new ClassReader(bytes);
ClassNode classNode = new ClassNode();
classReader.accept(classNode, 0);
boolean success = false;
for (MethodNode m : classNode.methods) {
if ("(F)V".equals(m.desc) && name_orientCamera.equals(m.name)) {
ListIterator<AbstractInsnNode> iter = m.instructions.iterator();
int f = 0;
while (iter.hasNext()) {
AbstractInsnNode node = iter.next();
if ((f == 0 || f == 1) && node.getOpcode() == FCONST_0) {
f++;
} else if ((f == 2) && node instanceof LdcInsnNode && ((LdcInsnNode) node).cst.equals(-0.1f)) {
f++;
} else if (f == 3) {
inject(iter);
success = true;
break;
} else {
f = 0;
}
}
}
}
if (!success) {
throw new NoSuchMethodError();
}
ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS);
classNode.accept(classWriter);
return classWriter.toByteArray();
}
/**
* public void orientCamera(float f) {
* ...
* if (ReplayHandler.isInReplay()) {
* GL11.glRotated(ReplayHandler.getCameraTilt(), 0, 0, 1);
* }
* ...
* }
*/
private void inject(ListIterator<AbstractInsnNode> iter) {
LabelNode l = new LabelNode();
iter.add(new MethodInsnNode(INVOKESTATIC, REPLAY_HANDLER, "isInReplay", "()Z", false));
iter.add(new JumpInsnNode(IFEQ, l));
iter.add(new MethodInsnNode(INVOKESTATIC, REPLAY_HANDLER, "getCameraTilt", "()F", false));
iter.add(new InsnNode(F2D));
iter.add(new LdcInsnNode(0D));
iter.add(new LdcInsnNode(0D));
iter.add(new LdcInsnNode(1D));
iter.add(new MethodInsnNode(INVOKESTATIC, "org/lwjgl/opengl/GL11", "glRotated", "(DDDD)V", false));
iter.add(l);
System.out.println("REPLAY MOD CORE PATCHER: Patched EntityRenderer.orientCamera(F) method");
}
}

1
src/main/java/eu/crushedpixel/replaymod/coremod/LoadingPlugin.java
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@@ -40,7 +40,6 @@ public class LoadingPlugin implements IFMLLoadingPlugin {
@Override
public String[] getASMTransformerClass() {
return new String[]{
CameraRollCT.class.getName(),
ForceChunkLoadingCT.class.getName(),
NoNameTagCT.class.getName(),
SoundManagerCT.class.getName(),

13
src/main/java/eu/crushedpixel/replaymod/mixin/MixinEntityRenderer.java
View File

@@ -234,4 +234,17 @@ public abstract class MixinEntityRenderer implements EntityRendererHandler.IEnti
GlStateManager.translate(0.0F, 0.0F, 0.1F);
}
}
/*
* Misc
*/
@Inject(method = "orientCamera", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/GlStateManager;translate(FFF)V", shift = At.Shift.AFTER, ordinal = 3))
private void setupCameraRoll(float partialTicks, CallbackInfo ci) {
if (ReplayHandler.isInReplay()) {
GL11.glRotated(ReplayHandler.getCameraTilt(), 0D, 0D, 1D);
}
}
}