This is a thing i found and i wanna give you the script for that if you want to make spikes turn with good hitboxes
Step 1:Get Game Maker (duh)
Step 2:Make a Sprite and click on the Button Center in the Sprite
Step 3:Make a Object with that sprite
Step 4:Make a Step Event and paste in that code: image_angle += 5;
Step Final: Your Done! if something didnt worked tell me