bullet_example.cpp

void Bullets::Update(Enemies* enemies) {

    for (int i = 0; i < MAX_BULLETS; i++) {
        Bullet* b = & bullets[i];
        if (b->unused) continue;

        // Bullet will be deleted because it exits screen or collides.

        // If we're out of bounds, fuck the death animation if there is one because
        // nobody's going to see an off screen death animation.
        if (IsBulletOutOfBounds(b)) {
            b->unused = true;
            number_of_bullets--;
            continue;
        }

        if (asset_bullets_is_animated[b->type]) {
            bool finished_animation = Animation_Update(& b->animation, (Asset_Ase_Animated*) *(b->asset));

            // If we're in the dead animation, we don't want to check any other logic,
            // except for whether the animation has ended, in which case we can delete the
            // bullet.
            if (b->animation.name == "Death") {
                if (finished_animation) b->unused = true;
                continue;
            }
        }


        Enemy* collided_enemy = HasCollided(b, enemies->enemies);
        if (collided_enemy == NULL) {
            // No collided enemy, so update bullet position and animation and go to next bullet.
            b->x = b->x + cos(b->angle) * b->speed * g_dt;
            b->y = b->y + sin(b->angle) * b->speed * g_dt;

            continue;
        }

        // damage enemy

        collided_enemy->juice_timer = 0.3;

        switch (b->type) {
            case TURRET_BASIC:
                collided_enemy->health -= TURRET_BASIC_DAMAGE;
                break;
            case TURRET_RAPID:
                collided_enemy->health -= TURRET_RAPID_DAMAGE;
                break;
            case TURRET_SNIPER:
                collided_enemy->health -= TURRET_SNIPER_DAMAGE;
                break;
            case TURRET_SPLASH:
                collided_enemy->health -= TURRET_SPLASH_DAMAGE;
                break;
            case TURRET_SLOW:
                collided_enemy->health -= TURRET_SLOW_DAMAGE; // 0 for now.
                collided_enemy->slowdown_timer = TURRET_SLOW_SLOWDOWN_DURATION;
                collided_enemy->slowdown_factor = TURRET_SLOW_SLOWDOWN_FACTOR;
                break;
            default:
                print("Bullet type invalid!");
                break;
        }

        // we're here => bullets hit something, so remove it because it's already hit something.

        // If we have death animation we do the dramatic bullet death, otherwise we just
        // delete the bullet.
        Animation_Tag tag = GetTag((Asset_Ase_Animated*) *(b->asset), "Death");
        if (tag.from != TAG_ERROR_VAL) {
            Animation_Set(& b->animation, (Asset_Ase_Animated*) *(b->asset), "Death");
        }
        else {
            b->unused = true;
            number_of_bullets--;
        }

    }
}