Tutorial: Land Mine Effect Last edited 2 years ago2022-09-01 11:39:55 UTC

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Land Mine Effect

Remember those landmines from Surface Tension? Discover the secret behind them.

To start make a block brush with the dimensions: 96w 540l 128h. Right click on it and select hollow. I made the wall width 2. Next, place an env_explosion (using the Entity tool or Shift E) in the middle of the hallway on the ground. Right click on it and select properties. Click on Name, I used: mine. The Magnitude is the size of the explosion, and the default is 100. You can give this a bigger number, but be careful. In a large outdoor map a Magnitude of 500-1000 will wipe out everything in a 2000 unit radius.
Finally, place a block brush around the env_explosion. Select the block and right click on it. Click on Tie to Entity in the pop-up list. In the drop down list select trigger_once. Click on target. Type the name of the env_explosion. In this case mine. Now put an info_player_start at one end of the hallway and don't forget a light.

Compile the map. The trigger_once will cause the env_explosion to make an explosion. Because the env_explosion is on the ground, it looks like a land mine exploded.

Just to let you watch the effect, without becoming part of it, I added a monster_zombie to blow up. To get the land mines to work with Monsters, you need to select the Monsters Flag of the trigger_once properties.