23 static const char *_cur_grffile;

    23 static const char *_cur_grffile;

    24 static int _cur_spriteid;

    24 static int _cur_spriteid;

    25 

    25 

    26 static int32 _paramlist[0x7f];

    26 static int32 _paramlist[0x7f];

    27 static int _param_max;

    27 static int _param_max;

    28 

    32 

    29 typedef void (*SpecialSpriteHandler)(byte *buf, int len);

    33 typedef void (*SpecialSpriteHandler)(byte *buf, int len);

    30 

    34 

    31 static const int _vehshifts[4] = {

    35 static const int _vehshifts[4] = {

    32 	0,

    36 	0,

   896 			break;

   900 			break;

   897 		case 0x84:

   901 		case 0x84:

   898 			/* XXX: This should be always true (at least until we get multiple loading stages?). */

   902 			/* XXX: This should be always true (at least until we get multiple loading stages?). */

   899 			param_val = 1;

   903 			param_val = 1;

   900 			break;

   904 			break;

   901 		case 0x86:

   909 		case 0x86:

   902 			param_val = _opt.road_side << 4;

   910 			param_val = _opt.road_side << 4;

   903 			break;

   911 			break;

   904 		default:

   912 		default:

   905 			if (param >= 0x80) {

   913 			if (param >= 0x80) {

  1173 	 *

  1181 	 *

  1174 	 * B num           Number of GRFIDs that follow

  1182 	 * B num           Number of GRFIDs that follow

  1175 	 * D grfids        GRFIDs of the files to deactivate */

  1183 	 * D grfids        GRFIDs of the files to deactivate */

  1176 	/* TODO */

  1184 	/* TODO */

  1177 }

  1185 }

  1178 

  1206 

  1179 /* Here we perform initial decoding of some special sprites (as are they

  1207 /* Here we perform initial decoding of some special sprites (as are they

  1180  * described at http://www.ttdpatch.net/src/newgrf.txt, but this is only a very

  1208  * described at http://www.ttdpatch.net/src/newgrf.txt, but this is only a very

  1181  * partial implementation yet; also, we ignore the stages stuff). */

  1209  * partial implementation yet; also, we ignore the stages stuff). */

  1182 /* XXX: We consider GRF files trusted. It would be trivial to exploit OTTD by

  1210 /* XXX: We consider GRF files trusted. It would be trivial to exploit OTTD by

  1201 		/* 0xb */ GRFError,

  1229 		/* 0xb */ GRFError,

  1202 		/* 0xc */ GRFComment,

  1230 		/* 0xc */ GRFComment,

  1203 		/* 0xd */ ParamSet,

  1231 		/* 0xd */ ParamSet,

  1204 		/* 0xe */ GRFInhibit,

  1232 		/* 0xe */ GRFInhibit,

  1205 	};

  1233 	};

  1206 	byte action;

  1235 	byte action;

  1207 	byte *buf = malloc(num);

  1236 	byte *buf = malloc(num);

  1208 	int i;

  1237 	int i;

  1209 

  1238 

  1210 	if (buf == NULL) error("DecodeSpecialSprite: Could not allocate memory");

  1239 	if (buf == NULL) error("DecodeSpecialSprite: Could not allocate memory");

  1211 

  1245 

  1212 	_cur_grffile = filename;

  1246 	_cur_grffile = filename;

  1213 	_cur_spriteid = spriteid;

  1247 	_cur_spriteid = spriteid;

  1214 

  1248 

  1215 	for (i = 0; i != num; i++)

  1249 	for (i = 0; i != num; i++)