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Newcomers DBPro Corner / Simple Gravity Code

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Evilcatt09
20
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Joined: 2nd Oct 2003
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Posted: 24th Apr 2004 06:20
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Can anyone show me a simple couple of lines of code that I can use as gravity for a 2D lunar lander type of game.

I found one tutorial a while ago that had a great lunar lander tutorial, if anyone knows what site this is on I would appreciate it if you could tell me.

Thanks

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apophis
21
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Joined: 14th Jul 2003
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Posted: 24th Apr 2004 06:40
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You could do something like:

ground = get ground height()
landery = object position y(1)
gravity = landery - gound
if landery > ground then move object down 1,gravity

note: I am using 1 for the object number of your lander
Also the move object down command may not always work because it corresponds to the objects forward facing direction.
Hope this helps

-Apophis
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CattleRustler
Retired Moderator
21
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Joined: 8th Aug 2003
Location: case modding at overclock.net
Posted: 24th Apr 2004 15:33 Edited at: 24th Apr 2004 15:33
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in your main loop you can try to move you main object downward by decrementing its Y position a wee bit each pass, but you can use collision on the ground/platform items to stop the object from moving thru them. Gives the appearance of gravity.


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