geode/loader/src/hooks/DynamicCastFix.cpp

#include <Geode/DefaultInclude.hpp>
#include <Geode/loader/Mod.hpp>

using namespace geode::prelude;

$execute {
    // this replaces the call to __dynamic_cast with a call to our own
    // this is needed because the transitions in cocos uses dynamic cast to check
    // layers, which fail on user layers due to typeinfo not matching

    #if defined(GEODE_IS_MACOS)
        void* dynamicCastAddr = reinterpret_cast<void*>(base::get() + 0x7a7c9f);
        (void) Mod::get()->hook(dynamicCastAddr, &cast::typeinfoCastInternal, "__dynamic_cast");
    #elif defined(GEODE_IS_ANDROID)
        void* handle = dlopen("libcocos2dcpp.so", RTLD_LAZY | RTLD_NOLOAD);
        void* dynamicCastAddr = dlsym(handle, "__dynamic_cast");

        (void)Mod::get()->hook(dynamicCastAddr, &cast::typeinfoCastInternal, "__dynamic_cast");

        dlclose(handle);
    #endif
}