Tools > POINT & CIRC COLLISION

---

a simple tool to visualize how we can detect collisions between a point and a circle

made by txgruppi

uploaded by txgruppi

added:

updated:

download cartridge

- CLICK TO PLAY -

×

Select a file to add to the computer

3

On keyboard: Arrows keys to move point. Z and X to change circle radius.
On gamepad: Dpad to move point. A and B to change circle radius.

---

2023-05-16: removed sqrt in favor of r^2 as suggested by @congusbongus
2023-01-11: Moved collision check code to its own function

Comments

congusbongus	#19182 You can avoid the costly square root by comparing against r^2
txgruppi	#19226 great tip! thanks!