Creature.h

#ifndef CREATURE_H
#define CREATURE_H

#include "SolidObject.h"
#include "Timer.h"

enum class CollisionState
{
    None = 0x0,

    FromAbove = 0x1,

    FromBelow = 0x2,

    FromLeft = 0x4,

    FromRight = 0x8
};

inline CollisionState operator| (CollisionState a, CollisionState b)
{
    // Cast to int first otherwise we'll just end up recursing
    return static_cast<CollisionState>(static_cast<int>(a) | static_cast<int>(b));
}

inline CollisionState operator& (CollisionState a, CollisionState b)
{
    return static_cast<CollisionState>(static_cast<int>(a)& static_cast<int>(b));
}

inline CollisionState& operator|= (CollisionState& a, CollisionState b)
{
    return a = a | b;
}

class Creature :
    public SolidObject
{
public:
    Creature(double x = 0.0, double y = 0.0, double width = 1.0, double height = 1.0, Uint8 health = 1);
    
    virtual ~Creature();

    void savePrevious() override;

    void moveBy(double x, double y);
    
    void hurt(Sint8 damage);

    void setSpeedVector(double x, double y);
    
    void addCollisionState(CollisionState state);

    virtual void onCollision(SolidObject* collider);

    Uint8 getHealth() const;

    bool getIsAlive() const;
    
    bool getIsInvulnerable() const;

    bool getWasInvulnerable() const;

    double getSpeedX() const;

    double getSpeedY() const;
    
    CollisionState getCollisionState() const;

    Creature& operator=(Creature const&) = delete;

protected:
    Uint8 health;
    
    Uint32 const invFrames;

    bool isAlive;

    bool isInvulnerable;
    
    bool wasInvulnerable;
    
    double speedX;

    double speedY;

    CollisionState collisionState;

    Timer invTimer;
};

#endif // CREATURE_H