Grid based collision detection in shmup game

[longloaf]

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

[Eli Delventhal]

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?

[Gudradain]

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

Games published by our own members! Check 'em out!

[h3ckboy]

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

+1

[Nate]

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

[longloaf]

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).

[Eli Delventhal]

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.

[Xyle]

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