[...] Issues: Overbyte 1 (Feb), Overbyte 2 (March). Leave a comment | Trackback No comments [...]

[...] making a guest appearance at the end of the first issue, which resulted in much confusion amongst those on the YYG forums, NAL is back with a couple of [...]

In the Create Event of your player object, create two variables (we’ll call them “hits” and “vuln”) and define them as 0.

In the collision event for the mushroom-type object, set the variable “hits” to 1 (this is assuming collecting more mushrooms/power-ups doesn’t give you more hits), change the sprite to your larger sprite, and destroy the other (that is, the mushroom) object.

In the collision event for the enemy, you’ll want to check both variables (that’s the little stop-sign shaped box w/ the VAR in it in drag-and-drop), first checking “vuln” (and I’ll explain why in a moment) then checking “hits”: if “vuln” is equal to 0, then check if “hits” is equal to 1; if “hits” IS equal to 1, then change the value of “hits” to 0, change the sprite to the smaller sprite, change the value of “vuln” to 1 and set an alarm for however many frames you want the character to be invulnerable– ELSE (that is, if “hits” is not equal to 1) then destroy the player object, restart the room, set lives relative to -1, etc.

In the alarm event we set off during the enemy collision, you’ll change “vuln” back to 0.

The reason why you’d want to use “vuln” is because otherwise the game will keep checking the collision with the enemy object and kill the player almost instantly; while “vuln” is equal to 1, the game won’t enact the other events.

In the future, you really should go somewhere like the GMC forums (gmc.yoyogames.com) with a question like this. I found that they’re very helpful when you’re just trying to find your feet with Game Maker.

Lol’d.