camera.h

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2025-2026 Manuel Osorio
#pragma once
 
#include "flint/math/types.h"
 
namespace Flint {
 
  class Camera {
    public:
      Camera() = default;
 
      Camera(Vec2f viewSize, Vec2f worldSize);
 
      void setTargetCenter(Vec2f center);
 
      void setViewSize(Vec2f size);
 
      void setWorldSize(Vec2f size);
 
      void update(float smoothing = 0.25f);
 
      FloatRect getViewRect() const;
 
      Vec2f getCenter() const;
 
      Vec2f screenToWorld(const Vec2f &sp, const Vec2i &screen) const;
 
      void setZoom(float zoom);
 
      float getZoom() const;
 
      void followClamped(const Vec2f &targetPos, const Vec2i &bufferSize, const Vec2i &mapPixelSize,
                         float smoothing = 0.2f);
 
    private:
      float     m_x = 0.f;     
      float     m_y = 0.f;     
      float     m_zoom = 1.f;  
      int       m_screenW = 0; 
      int       m_screenH = 0; 
      FloatRect m_bounds{};    
      float     m_lerp = 1.f;  
      FloatRect m_viewRect{};
 
      void follow(float targetX, float targetY);
      void clampToBounds();
      void updateViewRect();
  };
}