window.hpp

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#pragma once
 
#include <iostream>
#include <algorithm>
#include <unordered_set>
 
#include "../util/position.hpp"
#include "../types/types.hpp"
#include "../util/color.hpp"
 
#include "../engine/exception.hpp"
 
#include "key.hpp"
#include "mouse.hpp"
 
struct GLFWwindow;
 
namespace cangine {
    void resizeCallback(GLFWwindow* window, int w, int h);
 
    class Window {
    private:
    double lastTime;            
    int frameCount;             
    int fps;                    
    int instantFps;             
    double lastFrameTime = 0.0; 
    float deltaTime = 0.0f;     
    GLFWwindow* main;           
    static Window* instance;    
    static void _mouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
    static void _mouseEnterCallback(GLFWwindow *window, int e);
    static void _mouseMoveCallback(GLFWwindow *window, double _x, double _y);
 
    public:
    static void _characterCallback(GLFWwindow* window, unsigned int codepoint);
    static std::unordered_set<Key> keysPressed;     
    static std::unordered_set<Key> prevKeysPressed; 
    Dimensions dimensions; 
    Window(int width, int height, std::string title, bool fullscreen = false);
    ~Window();
    bool shouldClose();
    static void _processInput(GLFWwindow* win, int key, int scanCode, int action, int mods);
    static void _scrollCallback(GLFWwindow *window, double xOffset, double yOffset);
    void swapBuffers();
    void pollEvents();
    void loadGLAD();
    void onResize(int w, int h);
    void setTitle(std::string title);
    void fill(const Color &c);
    void beginFrame();
    void endFrame();
    int getFPS();
    int getInstantFPS();
    double getDeltaTime();
    static Window* getInstance();
    };
}