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);
}
