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Per Frame Collision

by Andrew Strauch · in Torque X 2D · 07/25/2009 (1:16 pm) · 2 replies

Hi, I am currently developing a 2D side-scrolling action game that has some melee combat in it. I've been looking for a way to do per frame collision on one of my animated sprites. I want to be able to have a different collision polygon per frame when I tell my character to punch or kick. I did find an older forum post (http://www.garagegames.com/community/forums/viewthread/69907), but I was wondering if there was an established way of doing it, or if anyone could point me to an exact method. Thanks for any help you can provide.
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Torque Owner Matthew Hoesterey
#1
07/26/2009 (4:14 pm)
Hi Andrew.

I am currently using a separate hit box object that I manually set to the players position plus an offset each frame.

I am then manually resizing and repositioning the hit box on important frames in my animations.

My game is a fighter so the hit box scaling is a very important part of gameplay and thus I hand tweak it for every attack.

you can do something like
if(AnimatedSprite.CurrentFrame == atkBasic.HitboxResizer1)
{
_myhitBox.HBOffset = new Vector(OffsetXforAtkbasic, offsetYforAtkBasic);
_myhitBox.Size = new Vector(SizeXforAtkbasic, SizeYforAtkBasic);
}

Torque Owner Brian
#2
07/29/2009 (11:35 am)
@Andrew - I kind of cheated on my game. Don't do this on every tick... I recommend only when you check for a punch or kick. Works VERY well but requires tweaking range to what you are doing. T2DScenegraph.FindObjects().

Brian