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                 *** Tempest's BUILD Tutorial ***
                     Lesson 9 : Making bridges
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Purpose:
   A Tutorial on making bridges in Duke Nukem 3D using Build.

Step 1:
   Surprisingly, bridges are made out of sprites in Build. First
   you need to know that sprites have different "modes". I'm not
   sure what to call it, though. I'll try to explain. Insert a
   sprite in 3D-mode by pointing at the floor and pressing S.
   Select a suitable "bridge"-texture by pressing V twice. Now 
   move around the sprite. You will notice that the sprite will
   rotate with you, always facing you. Now point at the sprite and
   press R. Move around the sprite and you'll see that it has
   become a "flat" sprite. It will not face you anymore whenever you
   move. Please refer to the example map (bridges.map) to see the
   effect. Pressing R again will put the sprite flat on the floor.
   Another press will put the sprite back into it's "normal" state.
   If you insert a sprite on a wall, then the sprite will start out
   flat. Try it and see.

Step 2:
   A bridge is made out of sprites. You can resize sprites by using
   the 2, 4, 6 and 8 on the keypad. You can flip sprites by pressing
   F. Create the pieces of your bridge and move them into position,
   forming your bridge. The parts of the bridge must be blockable,
   or you will fall through the bridge. Point at a sprite and press B.
   You'll see the color of the sprite change in 2D-mode. You can
   make bridges fall apart by assigning the sprites a hi-tag of 254.
   In 2D-mode point at a sprite and press Alt-H. That's it. Now,
   Build isn't very good at clipping sprites when they're bunched up
   together like in a bridge, so you'll have to experiment a bit to
   make your bridge look acceptable. 

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 Cho Yan Wong (aka Tempest)
 pwong@pobox.leidenuniv.nl
 http://www.wi.leidenuniv.nl/~cwong/myindex.html 
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