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To make a flamethrower you need to have a flamethrower entity
tied to two brushes, one a `trigger' brush (a brush without the
origin texture), the an `origin' brush (one with the origin texture).
The trigger brush sets off the jet when the player walks into it,
and also sets the player on fire. The origin brush determines where
the jet originates from (an origin field will also work). The player
will ignite after touching the trigger, regardless of where the jet
goes, so you have to be a bit careful to avoid stupid-looking results.
You can aim the jet in the horizontal plane using an angle field,
or in three dimensions using angles (but -1 and -2 for angle
do not work). Three dimensional aiming is a bit tricky,
the angle-field is a triple of numbers saying how the jet is
to be rotated around the Y, Z and X axes in succession (a `mangle').
To aim the jet straight down for example set angles to
90 0 0.
You can control the length of the jet with the speed field, and
the damage it does with the dmg. It can also be targetted,
so that it turns on either when the player walks into its regular
`trigger' brush, or by another trigger. Finally there's a wait
field. A wait-value of -1 makes it work in toggle-mode, turning
on when triggered and off when triggered again, but only by
targetting, not the player touching its regular trigger-brush.
This effect is not however quite as good as it might be, since the
full sound effect is looped, producing a pulsing effect rather than
a continuous whoosh. Otherwise the wait-value determines the time
till the jet will refire, but has no effect on the trigger-brush
igniting the player, so again some care has to be used to avoid
stupid-looking results (in the Raven maps, -1 and .5 are the
wait-values that occur).
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