common.h

   1 /*
   2  * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
   3  */
   4
   5 #ifndef COMMON_H
   6 #define COMMON_H
   7
   8 #define VG_TIMESTEP_FIXED (1.0/60.0)
   9 #define VG_3D
  10 #define VG_FRAMEBUFFER_RESIZE 1
  11 #include "vg/vg.h"
  12 #include "anyascii/anyascii.h"
  13
  14 typedef struct ray_hit ray_hit;
  15 struct ray_hit
  16 {
  17    float dist;
  18    u32 *tri;
  19    v3f pos, normal;
  20 };
  21
  22 static int network_scores_updated = 0;
  23
  24 static u32 utf8_byte0_byte_count( u8 char0 )
  25 {
  26    for( u32 k=2; k<4; k++ )
  27    {
  28       if( !(char0 & (0x80 >> k)) )
  29          return k;
  30    }
  31
  32    return 0;
  33 }
  34
  35 static void str_utf8_collapse( const char *str, char *buf, u32 length )
  36 {
  37    if( length == 0 )
  38    {
  39       strncpy( buf, "User", length );
  40       return;
  41    }
  42
  43    u8 *ustr = (u8 *)str;
  44    u32 utf32_code = 0x00000000;
  45    u32 i=0, j=0, utf32_byte_ct=0;
  46
  47    for(;i < length-1;)
  48    {
  49       if( ustr[i] == 0x00 )
  50          break;
  51
  52       if( ustr[i] & 0x80 )
  53       {
  54          if( utf32_byte_ct )
  55          {
  56             utf32_byte_ct --;
  57             utf32_code |= (ustr[i] & 0x3F) << (utf32_byte_ct*6);
  58
  59             if( !utf32_byte_ct )
  60             {
  61                const char *match;
  62                size_t chars = anyascii( utf32_code, &match );
  63
  64                for( u32 k=0; k<VG_MIN(chars, length-1-j); k++ )
  65                {
  66                   buf[ j++ ] = (u8)match[k];
  67                }
  68             }
  69          }
  70          else
  71          {
  72             utf32_byte_ct = utf8_byte0_byte_count( ustr[i] )-1;
  73             utf32_code = ustr[i] & (0x3F >> utf32_byte_ct);
  74             utf32_code <<= utf32_byte_ct*6;
  75          }
  76       }
  77       else
  78       {
  79          utf32_byte_ct = 0x00;
  80          buf[j ++] = str[i];
  81       }
  82
  83       i++;
  84    }
  85
  86    buf[j] = 0x00;
  87 }
  88
  89 #endif /* COMMON_H */