SFML community forums
Help => General => Topic started by: mikewu63 on April 02, 2017, 02:56:56 pm
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Hello,
I've recently started to learn SFML, and I'm currently working on a 2D game. I already have a player class and a bullet class, but now I'm having problems with spawning the enemies. Basically my idea is to spawn enemies (objects from class Enemy) with a delay of 3000ms. These enemies will spawn at a random position 0 to 600 for X and Y. However with my current code I can only spawn a single enemy object and draw it in the while loop.
This is my current code for the enemy class:
class Enemy {
public:
Enemy(sf::Vector2f size) {
en.setSize(size);
en.setFillColor(sf::Color::Red);
}
//... move();
void setPos(sf::Vector2f pos){
en.setPosition(pos);
}
void drawTo(sf::RenderWindow &win) {
win.draw(en);
}
//... randomPos() and randomPos2() are here
private:
sf::RectangleShape en;
};
And my code to create a new enemy object:
Enemy newEnemyObject({ 20, 20 });
newEnemyObject.setPos({ newEnemyObject.randomPos(), newEnemyObject.randomPos2() });
I obviously can't put it in a function and put it delay on it and set it in the main loop because that will stop the whole program. I thought about threading, but how will I draw it?
Any help would be appreciated
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Use an sf::Clock and check the elapsed time. If it's larger than 3s, add a new sprite to the std::vector and restart the clock.