I think your primary issue is you’re updating the bullet between every enemy update instead of once for all the the enemy updates. This creates a skew between the visual and what’s really happening. Also, you don’t need to define the Pythagorean formula, turtles already know it! Below is my rework of your code to … Read more
I will try to explain you how would i go to solve problem. if you road looks like on image, you can use pixel collsion only for part of texture (blue circle) no need to check whole image. And then you check collsions only on edges (protruding parts) of car tiny green circles. other way … Read more
Yep – this happens. The way to handle it (you can’t get sprite-kit to NOT call didBegin multiple times in some circumstances) is to make sure that your contact code accommodates this and that handling the contract multiple times does not cause a problem (such as adding to the score multiple times, removing multiple lives, … Read more
Without claiming to rework your design, I added collection of dead invaders(ArmyOfInvaders.deadInvader) to stored those ones, who already shot, and changed InvaderGotShot and DrawItem methods. I got rid of Invader.invader collection and introduced local variable in Invader.InitializeInvader instead of it to prevent misassigning. Please take a look: class Program { static void Main() { Settings.ScreenSettings(); … Read more