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Collision detection?

Started by EvilNando Aug 11, 2011 at 2:45 PM 2 replies 2.6k views

Original Post

Aug 11, 2011 at 2:45 PM

Im planning to build an isometric game, but given the requirements I see no need to implement a tile grid for rendering the world, instead I was thinking of just displaying one sprite for the land and multiple sprites for the level props (houses, trees...) The problem is I have no idea of a good way to handle collisions in this kind of situation.

My initial thought is to just assign rotated rectangles that somehow match the area where the collision should be

Im open to better alterantives

Tiblanc

Aug 11, 2011 at 5:47 PM

You could give them AABB and use them for collision detection just like you would a 3D game. It depends on your requirements. Sprite based collision detection obviously won't work. You need to build your game like a 3D game.

EvilNando

Author

EvilNando

Aug 11, 2011 at 7:41 PM

well pretty much what I was thinking.. I guess theres no other way

wildbunny

Aug 14, 2011 at 9:05 PM

Hi there,

Take a look at a couple of articles I wrote on the subject:

http://www.wildbunny.co.uk/blog/2011/02/23/2d-isometric-land-breaking-out-of-the-grid/

http://www.wildbunny.co.uk/blog/2011/03/01/2d-isometric-land-%e2%80%93-breaking-out-of-the-grid-part-2/

http://www.wildbunny.co.uk/blog/2011/03/18/2d-isometric-land-breaking-out-of-the-grid-update/

Cheers, Paul.

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