wow, I created ground and fire

config.json

@@ -1,6 +1,6 @@
 {
     "window":
     {
-        "size": [1280,720]
+        "size": -1
     }
 }

config.mk

@@ -1,4 +1,4 @@
 cpp = g++
 build_directory = build
 cppflags = -Wall
-libs = -lSDL2
+libs = -lSDL2 -lSDL2_image

src/game/DinamicObject.h

@@ -0,0 +1,51 @@
+#include "GameObject.h"
+#include <map>
+#include <string>
+#include <vector>
+#include <sys/time.h>
+#include <ctime>
+
+using namespace std;
+
+struct LastFrame
+{
+    string frameName;
+    int frameIndex;
+};
+
+class DinamicObject: public GameObject
+{
+    public:
+        DinamicObject(int x, int y, int w, int h, map<string, vector<SDL_Rect>> animations, int animationFps = 30): GameObject(x, y, w, h)
+        {
+            this->animations = animations;
+            this->frameLenth = 1000/animationFps;
+            this->lastFrameTime = -1;
+            this->lastFrame = {"", 0};
+        }
+        Frame frame()
+        {
+            time_t currentTime;
+            {
+                struct timeval timeNow{};
+                gettimeofday(&timeNow, nullptr);
+                currentTime = (timeNow.tv_sec * 1000) + (timeNow.tv_usec / 1000);
+            }
+
+            if (this->lastFrameTime == -1)
+                this->lastFrameTime = currentTime;
+            
+            int currentFrameIndex = ((this->lastFrame).frameIndex + (currentTime - this->lastFrameTime)/this->frameLenth) % (this->animations)[(this->lastFrame).frameName].size();
+        
+            this->lastFrameTime += (currentFrameIndex - (this->lastFrame).frameIndex) * this->frameLenth;
+            (this->lastFrame).frameIndex = currentFrameIndex;
+
+            return Frame(this->dstrect, animations[(this->lastFrame).frameName][currentFrameIndex]);
+        }
+
+    protected:
+        map<string, vector<SDL_Rect>> animations;
+        int frameLenth;
+        time_t lastFrameTime;
+        LastFrame lastFrame;
+};

src/game/Fire.h

@@ -0,0 +1,10 @@
+#include "DinamicObject.h"
+
+class Fire: public DinamicObject
+{
+    public:
+        Fire(int x, int y): DinamicObject(x, y, 128, 128, map<string, vector<SDL_Rect>>(), 5)
+        {   
+            for (int i = 1; i <= 4; i++) (this->animations)[""].push_back((SDL_Rect){i*16,0,16,16});
+        }
+};

src/game/GameObject.h

@@ -0,0 +1,44 @@
+#ifndef GAMEOBJECT
+#define GAMEOBJECT
+
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_image.h>
+
+class Frame
+{
+    public:
+        Frame(SDL_Rect dstrect, SDL_Rect srcrect, bool mirror = 0, int angle = 0)
+        {
+            this->dstrect = dstrect;
+            this->srcrect = srcrect;
+            this->mirror  = mirror;
+            this->angle   = angle;
+        }
+
+    public:
+        SDL_Rect dstrect;
+        SDL_Rect srcrect;
+        bool mirror;
+        int angle;
+};
+
+class GameObject
+{
+    public:
+        GameObject(int x, int y, int w, int h)
+        {
+            (this->dstrect).x = x;
+            (this->dstrect).y = y;
+            (this->dstrect).w = w;
+            (this->dstrect).h = h;
+        }
+        virtual Frame frame()
+        {
+            return Frame((SDL_Rect){0,0,0,0}, (SDL_Rect){0,0,0,0});
+        }
+
+    protected:
+        SDL_Rect dstrect;     
+};
+
+#endif //GAMEOBJECT

src/game/Ground.h

@@ -0,0 +1,7 @@
+#include "StaticObject.h"
+
+class Ground: public StaticObject
+{
+    public:
+        Ground(int x, int y): StaticObject(x, y, 128, 128, (SDL_Rect){0,0,16,16}){}
+};

src/game/StaticObject.h

@@ -0,0 +1,17 @@
+#include "GameObject.h"
+
+class StaticObject: public GameObject
+{
+    public:
+        StaticObject(int x, int y, int w, int h, SDL_Rect srcrect): GameObject(x, y, w, h)
+        {
+            this->srcrect = srcrect;
+        }
+        Frame frame()
+        {
+            return Frame(this->dstrect, this->srcrect);
+        }
+
+    protected:
+        SDL_Rect srcrect;
+};

src/game/game.cpp

@@ -4,11 +4,18 @@ GameEvent game(Window &window)
 {
     Event event;
 
+    Ground ground(0, 200);
+    Fire fire(-10,72);
+
     while(true)
     {
         if (event == Quit) window.quit();
 
         window.clear();
+
+        window.draw(ground);
+        window.draw(fire);
+
         window.update();
     }
 

src/game/game.h

@@ -1,7 +1,8 @@
 #ifndef GAME
 #define GAME
-
 #include "../window/window.h"
+#include "Ground.h"
+#include "Fire.h"
 
 enum GameEvent { None, Quit, Up, Left, Down, Right };
 

src/spirit.cpp

@@ -4,7 +4,7 @@ int main()
 {
     Config config("./config.json");
     
-    Window window(config.width, config.height, config.windowFlags);
+    Window window(config.width, config.height, 30, config.windowFlags);
 
     while(game(window) != Quit);
 }

src/window/window.cpp

@@ -1,61 +1,58 @@
 #include "window.h"
 
-Window::Window(int width, int height, int windowFlags)
+Window::Window(int width, int height, int windowFps, int windowFlags)
 {
-    if(SDL_Init(SDL_INIT_VIDEO|SDL_INIT_AUDIO) < 0)
+	if (SDL_Init(SDL_INIT_VIDEO) < 0)
-    {
+	{
-        cout << "Failed to initialize the SDL2 library\n";
+		cout << "Couldn't initialize SDL: " << SDL_GetError() << endl;
-        this->quit();
+		exit(1);
-    }
+	}
 
-    this->window = SDL_CreateWindow("Spirit", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, width, height, windowFlags);
+	IMG_Init(IMG_INIT_PNG | IMG_INIT_JPG);
-
-    if(!(this->window))
-    {
-        cout << "Failed to create window: " << SDL_GetError() << "\n";
-        this->quit();
-    }
 
+	this->window = SDL_CreateWindow("Spirit", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, width, height, windowFlags);
     SDL_SetWindowResizable(this->window, SDL_TRUE);
     
-    this->spritesheet = SDL_LoadBMP("./spritesheet.bmp");
+	if (!this->window)
+	{
+        cout << "Failed to open window: " << SDL_GetError() << endl;
+		exit(1);
+	}
     
-    if(!spritesheet)
+	SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
-    {
-        cout << "Failed to open spritesheet file\n";
-        this->quit();
-    }
 
-    this->surface = SDL_GetWindowSurface(this->window);
+	this->renderer = SDL_CreateRenderer(this->window, -1, SDL_RENDERER_ACCELERATED);
 
-    if(!surface)
+	if (!this->renderer)
-    {
+	{
-        cout << "Failed to get the surface from the window" << SDL_GetError() << "\n";
+        cout << "Failed to create renderer: " << SDL_GetError() << endl;
-        this->quit();
+		exit(1);
-    }
+	}
-};
+
+	this->spritesheet = IMG_LoadTexture(this->renderer, "./spritesheet.png");
+	SDL_SetTextureScaleMode(this->spritesheet, SDL_ScaleModeNearest);
+
+	this->windowDelay = 1000/windowFps;
+}
 
 void Window::clear()
 {
-    SDL_FillRect(this->surface, NULL, 0x000000);
+    if (SDL_SetRenderDrawColor(this->renderer, 0, 0, 0, 255))
+        cout << "\n";
+    SDL_RenderClear(this->renderer);
 }
 
-void Window::draw()
+void Window::draw(GameObject &object)
 {
-    SDL_FillRect(this->surface, NULL, 0x000000);
+	Frame frame = object.frame();
+
+	SDL_RenderCopy(this->renderer, this->spritesheet, &(frame.srcrect), &(frame.dstrect));
 }
 
 void Window::update()
 {
-    SDL_UpdateWindowSurface(this->window);
+    SDL_RenderPresent(this->renderer);
-    
+	SDL_Delay(this->windowDelay);
-    this->surface = SDL_GetWindowSurface(this->window);
-
-    if(!surface)
-    {
-        cout << "Failed to get the surface from the window" << SDL_GetError() << "\n";
-        this->quit();
-    }
 }
 
 void Window::quit()

src/window/window.h

@@ -2,24 +2,27 @@
 #define WINDOW
 
 #include <SDL2/SDL.h>
+#include <SDL2/SDL_image.h>
 #include <string>
 #include <iostream>
+#include "../game/GameObject.h"
 
 using namespace std;
 
 class Window
 {
     public:
-        Window(int width, int height, int windowFlags);
+        Window(int width, int height, int windowFps, int windowFlags);
         void clear();
-        void draw();
+        void draw(GameObject &draw);
         void update();
         void quit();
 
     private:
         SDL_Window *window;
-        SDL_Surface *spritesheet;
+        SDL_Renderer *renderer;
-        SDL_Surface *surface;
+        SDL_Texture* spritesheet;
+        int windowDelay;
 };
 
 #endif //WINDOW