esselfortium
Cumulonimbus Antagonistic Posting

Posts: 5153
Registered: 01-02 |
Tip 4: How to Make Foolproof Monster Teleports in Boom
I read a post a while back stating that the method of using Boom's conveyor belts to teleport monsters into a map was unreliable: the monster is only given one chance to teleport into the map, and its teleport spot could potentially have a player or another monster standing on it, thus preventing the monster from teleporting in successfully. As a result, the monster would remain stuck in its little off-map sector forever, just getting scrolled continuously into a solid wall, and it'd be impossible to get 100% kills on the level.
Until I read that post, I never even thought of the possibility of such a problem, and I wouldn't be surprised if a lot of other people haven't thought of it either.
The solution is remarkably simple: put the monster in a teleport loop in its off-map starting area.
Here's a visual demonstration of how the setup looks in Doom Builder, with explanations of what everything does. It's mostly just the standard setup, but I figured I might as well explain all of it for anyone who isn't familiar with the technique already:
http://essel.spork-chan.net/gfx/mappingtips/teleport-demo.png
The easiest way to test whether your foolproof Boom teleport has been set up correctly is to place some monsters directly on top of the teleport spots, and make them face away from you, so that they'll just stand in place. Cause the teleport trigger to occur, and wait...the monsters won't teleport in. Now, fire once or move into their line of sight to wake the space-occupying monsters up and make them start walking around. If you've done it correctly, the monsters will be teleported onto the destinations as expected soon afterwards. :)
One thing that's important to keep in mind is that if you're teleporting in multiple monsters from different sectors, each of them needs to have a separate teleport-loop line tag, or else they'll all end up teleporting into each other in one of the dummy teleport-from sectors. It should be possible, though, to just make one wide sector with all of them side by side, individual monster-teleport lines, and a single long silent-teleport line for the loop.
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Last edited by esselfortium on 12-30-11 at 06:53
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