Mikepicker

// Constants
const int ZOMBIE_COUNT = 20;  // Pre-allocate memory for hosting 20 zombies
const int SPAWN_FREQ = 3;     // Spawn frequency (in seconds)

// Timer
unsigned int lastSpawnTime = 0, currentTime;

// Global properties
int zombieWidth = 64;
int zombieHeight = 64;

Mikepicker

void render() {
  
  // Render survivor
  SDL_Rect srcSurv = { .x = (survivor.frameX / survivor.animSpeed) * survivor.w, .y = survivor.frameY * survivor.h, .w = survivor.w, .h = survivor.h };
  SDL_Rect dstSurv = { .x = (int)survivor.x, .y = (int)survivor.y, .w = survivor.w, .h = survivor.h };
  SDL_RendererFlip flip = survivor.scaleX == 1 ? SDL_FLIP_NONE : SDL_FLIP_HORIZONTAL;
  SDL_RenderCopyEx(gRenderer, survivor.texture, &srcSurv, &dstSurv, 0, NULL, flip);
  
}

Mikepicker

void update() {

    // Apply gravity
    survivor.vY += world.gravity;
    survivor.y += survivor.vY;

    // Motion
    survivor.x += survivor.vX;

    // If survivor is colliding with the platform..

Mikepicker

struct Survivor {
    float x, y;
    int w, h;
    float vX, vY;
    int scaleX, scaleY;
    int frameX, frameY;
    int animSpeed = 5;
    int speed = 3, jumpSpeed = 10;
    bool animCompleted = false;
    bool shot = false;

Mikepicker

void render() {

  // Clear screen
  SDL_RenderClear(gRenderer);
  
  // Render bullets
  for (int i = 0; i < BULLET_COUNT; i++) {
    if (bullets[i].alive) {
      SDL_Rect dstBullet = { .x = bullets[i].x, .y = bullets[i].y, .w = bulletWidth, .h = bulletHeight };
      SDL_RenderCopy(gRenderer, bulletTexture, NULL, &dstBullet);

Mikepicker

void update() {
  for (int i = 0; i < BULLET_COUNT; i++) {
    if (bullets[i].alive) {
      bullets[i].x += bulletSpeed * bullets[i].dir;

      if (bullets[i].x + bulletWidth < 0 || bullets[i].x > SCREEN_WIDTH) {
          bullets[i].alive = false;
      }
    }
  }

Mikepicker

void shootBullet() {
  for (int i = 0; i < BULLET_COUNT; i++) {
    
    if (!bullets[i].alive) {
      
      if (survivor.scaleX == 1) {
        bullets[i].x = survivor.x + 48;
      } else {
        bullets[i].x = survivor.x + 16;
      }

Mikepicker

bool loadMedia() {
  // Init bullet
  bulletTexture = loadTexture("assets/bullet.png");
  SDL_QueryTexture(bulletTexture, NULL, NULL, &bulletWidth, &bulletHeight);
}

Mikepicker

const int BULLET_COUNT = 10;
SDL_Texture* bulletTexture;
int bulletWidth, bulletHeight;
int bulletSpeed = 20;
struct Bullet {
    int x, y;
    int dir = 1;
    bool alive = false;
};

Mikepicker

void render() {
  
  // Clear screen
  SDL_RenderClear(gRenderer);
  
  // Render survivor
  SDL_Rect srcSurv = { .x = (survivor.frameX / survivor.animSpeed) * survivor.w, .y = survivor.frameY * survivor.h, .w = survivor.w, .h = survivor.h };
  SDL_Rect dstSurv = { .x = survivor.x, .y = survivor.y, .w = survivor.w, .h = survivor.h };
  SDL_RendererFlip flip = survivor.scaleX == 1 ? SDL_FLIP_NONE : SDL_FLIP_HORIZONTAL;
  SDL_RenderCopyEx(gRenderer, survivor.texture, &srcSurv, &dstSurv, 0, NULL, flip);