The main feature of UnLua is overriding 'BlueprintEvent', 'AnimNotify', 'RepNotify', 'InputEvent' without helper codes. This document will introduce the two methods to implement overriding.
'Func' is the thunk function.
If replacing the engine's default thunk function with a customized thunk function that calling Lua function, we can override the UFunction.
There is another path to call non-native UFunction:
Replacing thunk function is useless in this case, and we can inject special Opcodes to UFunction to implement overriding.
