moved everything to src/

src/renderer.c

@@ -0,0 +1,64 @@
+#include "renderer.h"
+
+#include <SDL2/SDL.h>
+#include <stdio.h>
+#include "error_codes.h"
+#include "level.h"
+#include "constants.h"
+
+// initializes the window and renderer
+int renderer_init(SDL_Window** window, SDL_Renderer** renderer) {
+    // initialize SDL
+    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
+        (void)printf("SDL Failed to initialize! SDL_Error: %s\n", SDL_GetError());
+        return FAILURE_SDL_INIT;
+    }
+
+    // init the window
+    *window = SDL_CreateWindow("Title", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
+    if (*window == NULL) {
+        (void)printf("Window failed to be created! SDL_Error: %s\n", SDL_GetError());
+        return FAILURE_SDL_WINDOW;
+    }
+
+    // create a renderer
+    *renderer = SDL_CreateRenderer(*window, -1, SDL_RENDERER_PRESENTVSYNC);
+
+    if (*renderer == NULL) {
+        (void)printf("Renderer failed to be created! SDL_Error: %s\n", SDL_GetError());
+        return FAILURE_SDL_RENDERER;
+    }
+
+    return SUCCESS;
+}
+
+// renders the screen
+void renderer_update(RenderData* render_data) {
+    SDL_Renderer* renderer = render_data->renderer;
+    Level* level = render_data->level;
+
+    int success = 0; // if an error occurs, this value is <0
+
+    // render background
+    success |= SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0xFF);
+    success |= SDL_RenderClear(renderer);
+
+    //draw player components
+    success |= SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
+    success |= SDL_RenderFillRectF(renderer, &(SDL_FRect) {level->bouncer.pos.x, level->bouncer.pos.y, level->bouncer.width, 5});
+    success |= SDL_RenderFillRectF(renderer, &(SDL_FRect) {level->ball.pos.x, level->ball.pos.y, level->ball.size, level->ball.size});
+
+    if (success < 0) {
+        printf("something went wrong whilst rendering: %s\n", SDL_GetError());
+        exit(FAILURE_SDL_RENDERER);
+    }
+
+    // present the result to the renderer
+    SDL_RenderPresent(renderer);
+}
+
+void renderer_destroy(SDL_Window* window, SDL_Renderer* renderer) {
+    SDL_DestroyWindow(window);
+    SDL_DestroyRenderer(renderer);
+    SDL_Quit();
+}