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Newcomers DBPro Corner / array collision

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dax24
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Posted: 31st Mar 2004 14:32
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i am a complete begineer to dbpro and i am trying to find some info on how to make a collision with a data file (array). hope this makes sense to people.

i have the code written out, what would i need to do to make a sprite react witht the tiles loaded from the data file?
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dax24
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Posted: 31st Mar 2004 19:07
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also does anybody know how to make a collision work for a sprite and a tile using the code posted above?????

this thing is really hurting my brain
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Scouseknight
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Posted: 31st Mar 2004 19:45 Edited at: 31st Mar 2004 19:45
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You will need to convert the sprite's X and Y positions (which could be anything from 0 to 320 for the X, and 0 to 240 for the Y) to array elements :

PlayerX# = PlayerX# / 16
PlayerY# = PlayerY# / 16

Next, work out the integer values of the above :

PlayerX = Int(PlayerX#)
PlayerY = Int(PlayerY#)

Now, use the PlayerX and PlayerY you have to check the adjacent cells :

PlayerUp = level_tiles(PlayerX, PlayerY-1)
PlayerDown = level_tiles(PlayerX, PlayerY+1)
PlayerLeft = level_tiles(PlayerX-1, PlayerY)
PlayerRight = level_tiles(PlayerX+1,PlayerY)

If you want to see an example of this in action then check out my Pac Man guide which has array-based collision detection along the same lines as yours :

http://darkbasic.thegamecreators.com/?m=forum_view&t=28865&b=7

Hope this helps.

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dax24
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Posted: 2nd Apr 2004 12:12
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thanks for that Scouseknight, helped me out alot.

also, nice tutorial on the pacman game.
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