tb_camera.h

#ifndef _TurtleBrains_Camera_h_
#define _TurtleBrains_Camera_h_

#include "../math/tb_vector.h"

namespace TurtleBrains
{
    namespace Graphics
    {

        class Camera;

        void SetActiveCamera(Camera& camera);

        void SetActiveCamera(Camera* camera);

        Camera& GetActiveCamera(void);
        
        class Camera
        {
        public:
            enum IntensityLevel
            {
                kNoShaking,     
                kLightShaking,  
                kMediumShaking, 
                kHeavyShaking   
            };

            Camera(void);

            virtual ~Camera(void);

            void SetPosition(const tbMath::Vector2& cameraPosition);

            const tbMath::Vector2& GetPosition(void) const;

            tbMath::Vector2 GetPositionWithShake(void) const;

            void Update(const float deltaTime);

            void ShakeCamera(const IntensityLevel& shakeIntensity, const float shakeDuration = -1.0f);

            void SetRotation(const float cameraRotation);

            float GetRotation(void) const;

        private:
            tbMath::Vector2 mPosition;
            tbMath::Vector2 mShakeOffset;
            float mRotation;

            float mShakeIntensity;
            float mShakeDuration;
        };

    }; /* namespace Graphics */
}; /* namespace TurtleBrains */

namespace tbGraphics = TurtleBrains::Graphics;

#endif /* _TurtleBrains_Camera_h_ */