Miscellany

#define ENEMIES 10

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SDL_Surface *screen, *back, *lifeicon, *gameoverimg, *healthbar;

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CSpriteBase enemybase; // The enemy sprite's base
CBasicEnemy *enemies[ENEMIES]; // Individual enemies

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// Add an enemy onto the screen
void addEnemy()
{
	// We loop through all the spots for enemies
	for (int i=0; i < ENEMIES; i++)
	{
		// If the spot is free
		if (enemies[i] == NULL)
		{
			// Make one enemy out of two
			if (rand() % 2 == 0)
			{
				enemies[i] = new CEnemy2();
				enemies[i]->init(&enemybase, screen);
				
				// mark him as blue (moving up and down)
				enemies[i]->setType(rand()%300+1);
			}
			else
			{
				enemies[i] = new CBasicEnemy;
				enemies[i]->init(&enemybase, screen);
				// mark him as purple
				enemies[i]->setType(0);
			}

			// we stop the animation on the enemy sprite for safety
			// (so that it wouldn's start blinking blue and purple all the time)
			enemies[i]->stopAnim();
			// We give the enemy a random y coordinate so that each enemy
			// pops up at a different location...
			enemies[i]->set(800, 40+rand()%470);
			// We also give the enemy random speed and life values
			enemies[i]->setSpeed(rand()%4+1);
			enemies[i]->setLife(rand()%3+1);

			// fill in the spot
			enemies[i]->setVisible(1);
			return;
		}
	}
}

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// The main function...
int main(int argc, char *argv[])
{

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	enemybase.init("data/sprites", "enemy");

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	for (int i=0; i<ENEMIES; i++)
	{
		enemies[i] = NULL;
	}

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	// Loop while done equals true
	int done=0;
	while (done == 0)
	{
		
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		// If the game isn't paused nor over then
		if (!paused && !gameover)
		{
			
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			// If 3/4 seconds have passed since the last enemy came out
			if (sdlgt-elast>750)
			{
				// Add a new enemy
				addEnemy();
				// Mark the time when this enemy came out
				elast=(Uint32)sdlgt;
			}

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	}

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	// We loop through all the spots for enemies
	for (int i=0; i < ENEMIES; i++)
	{
		// If the spot is free
		if (enemies[i] != NULL)
		{
			delete enemies[i];
			enemies[i] = NULL;
		}
	}
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	return 0;
}