Python 2.7.7 / Pygame-如何检测鼠标是否在圆圈内？

Question

Hi I am trying to make a punny cookie clicker type game called py clicker and made an invisible circle over the sprite which is a pie. How do I detect if the mouse is within the circle so when the user clicks it checks if it is in the circle and adds one to the counter?

Answer 1

If you know the x,y of the center of the circle and it's radius then you can calculate the distance from the center of the circle to your mouse pointer when you click. If it's greater than the radius then you are outside. There is a built in method that might help called math.hypot that will return the length between two points.

Answer 2

You could try pygame.sprite.collide_circle() . But you will need another Sprite with small radius and mouse position.

Answer 3

您可以使用图形库并使用称为getMouse的方法。