terrain boundaries - GameCreators Forum

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xix psycho xix

16

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Joined: 15th Sep 2008

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Posted: 17th Sep 2008 01:04

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i was wondering if anyone could tell me how to go about setting up boundaries for a terrain. I have a 512x512 bitmap that I am loading as a terrain, and i am scaling it and setting boundaries using an object like so:

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dbSetTerrainScale (TERRAIN_1, 100.0f, 6.0f, 100.0f);

dbMakeObjectBox (LEVEL_BOUNDS, dbGetTerrainXSize (TERRAIN_1)*100, 1000, dbGetTerrainZSize (TERRAIN_1)*100);
dbPositionObject (LEVEL_BOUNDS, 0, dbGetTerrainGroundHeight (TERRAIN_1, 0, 0), 0);

and then I am checking for collisions with this object, at which point an object will be either prevented from going any further or the object will turn. Am I doing this right?

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AlexI

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Joined: 31st Dec 2004

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Posted: 17th Sep 2008 02:45

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You could just make sure that the object doesnt go past a certain distance e.g

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if (dbObjectPositionX(car)>500) { dbPositionObject(car,500,dbObjectPositionY(car),dbObjectPostionZ(car)); }

if (dbObjectPositionX(car)<-500) { dbPositionObject(car,-500,dbObjectPositionY(car),dbObjectPostionZ(car)); }

if (dbObjectPositionZ(car)<-500) { dbPositionObject(car,dbObjectPositionX(car),dbObjectPositionY(car),-500); }

if (dbObjectPositionZ(car)>500) { dbPositionObject(car,dbObjectPositionX(car),dbObjectPositionY(car),500); }

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xix psycho xix

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Posted: 17th Sep 2008 03:05

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how could i do that for terrains that i dont know the size of? Say that i would use dbLoadTerrain to load one of three, all of which were different sizes, and i wanted to make sure that the object stayed within the bounds of all of them.

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xix psycho xix

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Posted: 17th Sep 2008 06:05

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Is there anything that I can do to make that flexible? What if i want to load different heightmaps of different sizes? Say i want to load one that is 512x512 and another 256x256, but i scale them both like so: dbScaleTerrain (TERRAIN, 100.0, 6.0, 100.0)

Now, these objects will have different edges, so how can i make that in my code? Use something like dbGetTerrainXSize (TERRAIN)?

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Dark GDK / terrain boundaries