Tween.h

#ifndef TWEEN_H
#define TWEEN_H
 
#include "Etterna/Models/Misc/EnumHelper.h"
 
struct lua_State;
using Lua = lua_State;
 
enum TweenType
{
    TWEEN_LINEAR,     
    TWEEN_ACCELERATE, 
    TWEEN_DECELERATE, 
    TWEEN_SPRING,     
    TWEEN_BEZIER,     
    NUM_TweenType,    
    TweenType_Invalid
};
#define FOREACH_TweenType(tt) FOREACH_ENUM(TweenType, tt)
LuaDeclareType(TweenType);
 
class ITween
{
  public:
    virtual ~ITween() = default;
    [[nodiscard]] virtual auto Tween(float f) const -> float = 0;
    [[nodiscard]] virtual auto Copy() const -> ITween* = 0;
 
    static auto CreateFromType(TweenType iType) -> ITween*;
    static auto CreateFromStack(Lua* L, int iStackPos) -> ITween*;
};
 
#endif