public void addTinkersDrawHoveringTextHook(
MethodNode method,
Class<?> hookClass,
String hookMethod,
String hookDesc,
boolean isObfuscated) {
AbstractInsnNode targetNode = null;
// get last drawGradientRect call
for (AbstractInsnNode instruction : method.instructions.toArray()) {
if (instruction.getOpcode() == INVOKEVIRTUAL) {
MethodInsnNode methodInsn = (MethodInsnNode) instruction;
if (methodInsn.desc.equals("(IIIIII)V")) targetNode = instruction;
}
}
if (targetNode == null) {
AppleCore.Log.warn("Could not patch " + method.name + "; target node not found");
return;
}
LocalVariableNode x = ASMHelper.findLocalVariableOfMethod(method, "i1", "I");
LocalVariableNode y = ASMHelper.findLocalVariableOfMethod(method, "j1", "I");
LocalVariableNode w = ASMHelper.findLocalVariableOfMethod(method, "k", "I");
LocalVariableNode h = ASMHelper.findLocalVariableOfMethod(method, "k1", "I");
if (x == null || y == null || w == null || h == null) {
AppleCore.Log.warn("Could not patch " + method.name + "; local variables not found");
return;
}
InsnList toInject = new InsnList();
/*
// equivalent to:
Hooks.onDrawHoveringText(0, 0, 0, 0);
*/
toInject.add(new VarInsnNode(ILOAD, x.index));
toInject.add(new VarInsnNode(ILOAD, y.index));
toInject.add(new VarInsnNode(ILOAD, w.index));
toInject.add(new VarInsnNode(ILOAD, h.index));
toInject.add(
new MethodInsnNode(
INVOKESTATIC, hookClass.getName().replace('.', '/'), hookMethod, hookDesc, false));
method.instructions.insert(targetNode, toInject);
}
@Override
public byte[] transform(String name, String transformedName, byte[] bytes) {
ClassNode classNode = ASMHelper.readClassFromBytes(bytes);
if (transformedName.equals("net.minecraft.client.gui.GuiScreen")) {
MethodNode methodNode =
ASMHelper.findMethodNodeOfClass(
classNode,
"drawHoveringText",
"drawHoveringText",
"(Ljava/util/List;IILnet/minecraft/client/gui/FontRenderer;)V");
if (methodNode != null) {
addDrawHoveringTextHook(methodNode, Hooks.class, "onDrawHoveringText", "(IIII)V");
} else throw new RuntimeException("GuiScreen.drawHoveringText not found");
} else if (name.equals("codechicken.lib.gui.GuiDraw")) {
MethodNode methodNode =
ASMHelper.findMethodNodeOfClass(classNode, "drawTooltipBox", "drawTooltipBox", "(IIII)V");
if (methodNode != null) {
addCodeChickenDrawHoveringTextHook(
methodNode, Hooks.class, "onDrawHoveringText", "(IIII)V");
} else AppleCore.Log.error("drawTooltipBox method in codechicken.lib.gui.GuiDraw not found");
} else if (name.equals("tconstruct.client.gui.NewContainerGui")) {
MethodNode methodNode =
ASMHelper.findMethodNodeOfClass(
classNode, "func_102021_a", "func_102021_a", "(Ljava/util/List;II)V");
if (methodNode != null) {
addTinkersDrawHoveringTextHook(
methodNode, Hooks.class, "onDrawHoveringText", "(IIII)V", false);
} else
AppleCore.Log.error(
"func_102021_a method in tconstruct.client.gui.NewContainerGui not found");
}
return ASMHelper.writeClassToBytes(classNode);
}