3D terrain thingi
Blitz3D Forums/Blitz3D Programming/3D terrain thingi
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| Lo all. This is a shot of a project im working on. The problem im having is with the landscape. Its a 3ds model I loaded up, and I need to know what height a part of it is, based on the location of an object like a tree a rock a fence or a sheep.. so that I can make sure the object is on the landscape and not sunk into it. If you know what I mean. Any help is welcome. thanks..  |
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| Simply take a point you know is above the ground (y=1000 ?) and then do a linepick straight down. Then use the pickedY value to get the exact height for positioning. I would recommend placing your object slightly lower (if its a tree or a rock) so that the object looks like it is placed firmly. |
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| would that method be fast enough for something that moves ? ie the sheep running all over the place ? |
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| Yes, it's plenty fast. Every loop do this. 1. Get current sheeps position. 2. Pick from 1 unit above the sheep 2 units below it. 3. Assuming the sheeping isnt moving at warp speed this will return the height of the terrain directly below the sheep. 4. Position the sheep. |
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| I am working on a large terrain myself and I place all objects on the terrain with the following format: PositionEntity Ent01,xx,TerrainY(Terrain,xx,0,zz)+80,zz The +80 can be adjusted to get just the right hight. For tt = 1 To trees Treeb(tt) = CopyEntity(Ent01) ;another tree RotateEntity(Treeb(tt),-90,Rnd(0,320),0) xx=Rnd(10,rd) zz=Rnd(10,rd) ScaleEntity Treeb(tt),4,4,4 PositionEntity Treeb(tt),xx,TerrainY(Terrain,xx,0,zz)+80,zz Next use this to place many copied trees on the terrain. |
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| True, AbbaRue, TerrainY would work on a blitz terrain, but he's using a custom 3ds object |
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