Rect testing

src/main.c

@@ -9,9 +9,14 @@
 #include <SDL2/SDL_video.h>
 #include <SDL2/SDL_image.h>
 #include <SDL2/SDL_ttf.h>
+#include <stdlib.h>
+#include "cell.h"
 
 const int SCREEN_WIDTH = 1280;
 const int SCREEN_HEIGHT = 720;
+const int CELL_SIZE = 15;
+const int MAX_X = SCREEN_WIDTH / CELL_SIZE - 1;
+const int MAX_Y = SCREEN_HEIGHT / CELL_SIZE - 1;
 
 typedef struct {
     SDL_Window *window;
@@ -23,6 +28,7 @@ App app;
 
 void Cleanup(void);
 void HandleInput(void);
+int GetIndex(int x, int y, int columns);
 
 int main(int argc, char** argv) {
     memset(&app, 0, sizeof(app));
@@ -34,6 +40,18 @@ int main(int argc, char** argv) {
         return -1;
     }
 
+     if (TTF_Init() < 0) {
+        printf("Failed to init TTF: %s\n", TTF_GetError());
+        return -1;
+    }
+
+    app.font = TTF_OpenFont("/usr/share/fonts/TTF/Hack-Regular.ttf", 14);
+
+    if (app.font == NULL) {
+        printf("Failed to load font\n");
+        return -1;
+    }
+
     app.window = SDL_CreateWindow("SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
 
     if (app.window == NULL){
@@ -50,19 +68,43 @@ int main(int argc, char** argv) {
         return -1;
     }
 
+    SDL_Rect* rect = malloc(sizeof(SDL_Rect));
+    rect->h = CELL_SIZE;
+    rect->w = CELL_SIZE;
+    rect->x = 0;//MAX_X * CELL_SIZE;
+    rect->y = 0;//MAX_Y * CELL_SIZE;
+    Cell* cell = CreateCell(*rect);
+
     while(1){
 
         HandleInput();
 
-        SDL_Delay(16);
+        SDL_Delay(128);
+
+        SDL_SetRenderDrawColor(app.renderer, 0, 0, 0, 255);
+
+        SDL_RenderClear(app.renderer);
+
+        SDL_SetRenderDrawColor(app.renderer, 255, 255, 255, 255);
+
+        rect->x += CELL_SIZE;
+        rect->y += CELL_SIZE;
+
+        if (rect->x / CELL_SIZE > MAX_X) rect->x = 0;
+        if (rect->y / CELL_SIZE > MAX_Y) rect->y = 0;
+
+        SDL_RenderFillRect(app.renderer, rect);
 
         SDL_RenderPresent(app.renderer);
     }
+
+    free(cell);
 }
 
 void Cleanup(void) {
     SDL_DestroyWindow(app.window);
     SDL_DestroyRenderer(app.renderer);
+    TTF_CloseFont(app.font);
     TTF_Quit();
     SDL_Quit();
 }
@@ -82,3 +124,7 @@ void HandleInput(void) {
     }
   }
 }
+
+int GetIndex(int x, int y, int columns) {
+  return x + y * columns;
+}