doom

a minimalistic implementation of doom
git clone git://ssnf.xyz/doom
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tables.h (595B)

      1 #ifndef __TABLES__
      2 #define __TABLES__
      3 
      4 #include <math.h>
      5 
      6 #include "m_fixed.h"
      7 	
      8 #define FINEANGLES		8192
      9 #define FINEMASK		(FINEANGLES-1)
     10 #define ANGLETOFINESHIFT	19		
     11 #define ANG45			0x20000000
     12 #define ANG90			0x40000000
     13 #define ANG180		0x80000000
     14 #define ANG270		0xc0000000
     15 #define SLOPERANGE		2048
     16 #define SLOPEBITS		11
     17 #define DBITS			(FRACBITS-SLOPEBITS)
     18 
     19 typedef unsigned angle_t;
     20 
     21 extern fixed_t  finesine[5*FINEANGLES/4];
     22 extern fixed_t* finecosine;
     23 extern fixed_t  finetangent[FINEANGLES/2];
     24 extern angle_t  tantoangle[SLOPERANGE+1];
     25 
     26 int SlopeDiv(unsigned num, unsigned den);
     27 
     28 #endif