TrenchBroom portal file (.prt) support

[G2Pavon]

A new HLVIS compile parameter -tbprt for fix prt files for TrenchBroom.
The diffs from JACK .prt file is that TB .prt uses a header PRT1 and second line is 0.

Fixed .prt for JACK:

7
6
4 0 6 (208.000000 544.000000 192.000000) (208.000000 544.000000 0.000000) (208.000000 176.000000 0.000000) (208.000000 176.000000 192.000000) 
4 0 1 (688.000000 176.000000 192.000000) (416.000000 176.000000 192.000000) (416.000000 176.000000 0.000000) (688.000000 176.000000 0.000000) 
4 1 2 (512.000000 96.000000 0.000000) (608.000000 96.000000 0.000000) (608.000000 96.000000 128.000000) (512.000000 96.000000 128.000000) 
4 2 3 (512.000000 32.000000 0.000000) (608.000000 32.000000 0.000000) (608.000000 32.000000 128.000000) (512.000000 32.000000 128.000000) 
4 3 4 (416.000000 -304.000000 192.000000) (416.000000 -112.000000 192.000000) (416.000000 -112.000000 0.000000) (416.000000 -304.000000 0.000000) 
4 4 6 (208.000000 -112.000000 0.000000) (208.000000 -304.000000 0.000000) (208.000000 -304.000000 192.000000) (208.000000 -112.000000 192.000000)  

Fixed .prt for TrenchBoom:

PRT1
0
6
4 0 6 (208.000000 544.000000 192.000000) (208.000000 544.000000 0.000000) (208.000000 176.000000 0.000000) (208.000000 176.000000 192.000000) 
4 0 1 (688.000000 176.000000 192.000000) (416.000000 176.000000 192.000000) (416.000000 176.000000 0.000000) (688.000000 176.000000 0.000000) 
4 1 2 (512.000000 96.000000 0.000000) (608.000000 96.000000 0.000000) (608.000000 96.000000 128.000000) (512.000000 96.000000 128.000000) 
4 2 3 (512.000000 32.000000 0.000000) (608.000000 32.000000 0.000000) (608.000000 32.000000 128.000000) (512.000000 32.000000 128.000000) 
4 3 4 (416.000000 -304.000000 192.000000) (416.000000 -112.000000 192.000000) (416.000000 -112.000000 0.000000) (416.000000 -304.000000 0.000000) 
4 4 6 (208.000000 -112.000000 0.000000) (208.000000 -304.000000 0.000000) (208.000000 -304.000000 192.000000) (208.000000 -112.000000 192.000000) 

[oskarlh]

JACK seems to accept the PRT1 (at least I didn't get any error messages), so perhaps it's just as good to always write the PRT1? (Writing this from my work Mac so I can't test with Hammer right now)