breakable_brush
/*QUAKED breakable_brush (1 .5 0) ? KILLALL NOLINK ORDERED TRANSLUCENT INVULNERABLE INVISIBLE PUSHPULL NOTPLAYERDAMAGE

    A brush that explodes. 

NOTPLAYERDAMAGE - players cannot damage this brush

KILLALL - kills any brushes touching this one 

HIERARCH - kills any brushes touching this one 

NOLINK - can touch a KILLALL brush and not be linked to it

INVULNERABLE - if set it can't be hurt

*** VARIABLES ***
health - amount of damage the brush can take before exploding
materialtype - 
0 = STONE
1 = GREYSTONE (default)map 
2 = CLOTH
3 = METAL
4 = FLESH
5 = POTTERY
6 = GLASS
7 = LEAF
8 = WOOD
9 = BROWNSTONE
10 = NONE - just makes smoke


*/

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