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  Grid based collision detection in shmup game  (Read 3727 times)
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Offline longloaf

Senior Newbie


Projects: 3



« Posted 2010-01-06 14:42:19 »


game: http://longloaf.com/shmup2
gameplay video: http://www.youtube.com/watch?v=OM6N8C96acY
grid based collision detection video: http://www.youtube.com/watch?v=mQdBw77RIiQ
Offline Eli Delventhal

JGO Kernel


Medals: 42
Projects: 11
Exp: 10 years


Game Engineer


« Reply #1 - Posted 2010-01-06 15:21:44 »

Looks pretty good. It's impossible to tell how accurate your collision is, but at least you're getting good speed.

How exactly are you accomplishing it? Grid-based initial check and then a distance check for circles, or what?

See my work:
OTC Software
Offline Gudradain
« Reply #2 - Posted 2010-01-06 20:16:50 »

Seems to be only grid base because my shoot sometimes pass through enemy.
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Offline h3ckboy

JGO Coder


Medals: 5



« Reply #3 - Posted 2010-01-06 22:13:38 »

Seems to be only grid base because my shoot sometimes pass through enemy.
+1
Offline Nate

« JGO Bitwise Duke »


Medals: 158
Projects: 4
Exp: 14 years


Esoteric Software


« Reply #4 - Posted 2010-01-06 23:27:33 »

814. Fun! Mouse to aim is a bit hard though.

Offline longloaf

Senior Newbie


Projects: 3



« Reply #5 - Posted 2010-01-08 13:16:10 »

Looks pretty good. It's impossible to tell how accurate your collision is, but at least you're getting good speed.

How exactly are you accomplishing it? Grid-based initial check and then a distance check for circles, or what?
A distance check for circles (enemies, player) and points (bullets).
Offline Eli Delventhal

JGO Kernel


Medals: 42
Projects: 11
Exp: 10 years


Game Engineer


« Reply #6 - Posted 2010-01-08 15:29:15 »

In that case it might be a good idea to use a quadtree collision algorithm rather than a grid based one, or allow a circle to exist in multiple grid spaces so that bullets never pass through them.

See my work:
OTC Software
Offline Xyle
« Reply #7 - Posted 2010-01-10 21:14:53 »

Wow, thats some heart pounding action there! Nice one! I scored 423!  persecutioncomplex

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