Michele Rullo Mikepicker

Computer Engineer & Startupper

Mikepicker / 2-shoot-bullet.cpp

Created November 16, 2017 20:32

Mikepicker / 2-update-bullets.cpp

Created November 16, 2017 20:37

	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 / 2-render-bullets.cpp

Created November 16, 2017 20:41

	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 / 3-velocity.cpp

Created November 17, 2017 17:49

Mikepicker / 3-update.cpp

Last active November 17, 2017 19:33

	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 / 3-render.cpp

Created November 17, 2017 19:51

	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 / 4-zombies.cpp

Created November 18, 2017 13:50

	// 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 / 4-load.cpp

Created November 18, 2017 13:58

	#include <stdlib.h>
	#include <time.h>

	...

	void loadMedia() {

	// Seed random number generator
	srand(time(NULL));

Mikepicker / 4-spawn.cpp

Last active November 18, 2017 14:03

	int randInRange(int min, int max) {
	return rand() % (max + 1 - min) + min;
	}

	void spawnZombie() {
	for (int i = 0; i < ZOMBIE_COUNT; i++) {
	if (!zombies[i].alive) {
	zombies[i].frameX = 0;
	zombies[i].frameY = 0;
	zombies[i].x = randInRange(platform.x, platform.x + platform.w - zombieWidth);

Mikepicker / 4-update.cpp

Created November 18, 2017 14:15

	bool platformCollision(float x, float y, int w, int h) {
	return y + h > platform.y &&
	x + 48 >= platform.x &&
	x + w - 48 <= platform.x + platform.w;
	}

	void update() {

	// Zombies
	for (int i = 0; i < ZOMBIE_COUNT; i++) {