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Warn about singleton being a Reference

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(cherry picked from commit e1150bd912)
This commit is contained in:
Pedro J. Estébanez 2020-11-19 11:46:05 +01:00 committed by Rémi Verschelde
parent b9641efc5c
commit 9df6edc7d7
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GPG key ID: C3336907360768E1
2 changed files with 11 additions and 4 deletions
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10
core/engine.cpp
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@ -236,3 +236,13 @@ Engine::Engine() {
_frame_step = 0;
editor_hint = false;
}
Engine::Singleton::Singleton(const StringName &p_name, Object *p_ptr) :
name(p_name),
ptr(p_ptr) {
#ifdef DEBUG_ENABLED
if (Object::cast_to<Reference>(p_ptr)) {
ERR_PRINT("A class intended to be used as a singleton must *not* inherit from Reference.");
}
#endif
}

5
core/engine.h
View file

@ -42,10 +42,7 @@ public:
struct Singleton {
StringName name;
Object *ptr;
Singleton(const StringName &p_name = StringName(), Object *p_ptr = NULL) :
name(p_name),
ptr(p_ptr) {
}
Singleton(const StringName &p_name = StringName(), Object *p_ptr = NULL);
};
private: