support property DATADIR for data files of games away from binary lauch place

 this solve in a place the #1 problem

Author: mckaygerhard

Makefile

@@ -4,7 +4,7 @@ CONFIG ?= config.default
 
 BINARY    ?= wolf3d
 PREFIX    ?= /usr/local
-MANPREFIX ?= $(PREFIX)
+DATADIR   ?= $(PREFIX)/share/games/wolf3d/
 
 INSTALL         ?= install
 INSTALL_PROGRAM ?= $(INSTALL) -m 555 -s
@@ -27,6 +27,10 @@ CFLAGS += -Wwrite-strings
 CFLAGS += -Wcast-align
 
 
+ifdef DATADIR
+    CFLAGS += -DDATADIR=\"$(DATADIR)\"
+endif
+
 CCFLAGS += $(CFLAGS)
 CCFLAGS += -std=gnu99
 CCFLAGS += -Werror-implicit-function-declaration

id_ca.cpp

@@ -83,13 +83,14 @@ int     numEpisodesMissing = 0;
 char extension[5]; // Need a string, not constant to change cache files
 char graphext[5];
 char audioext[5];
-static const char gheadname[] = "vgahead.";
-static const char gfilename[] = "vgagraph.";
-static const char gdictname[] = "vgadict.";
-static const char mheadname[] = "maphead.";
-static const char mfilename[] = "maptemp.";
-static const char aheadname[] = "audiohed.";
-static const char afilename[] = "audiot.";
+static const char gheadname[] = DATADIR "vgahead.";
+static const char gfilename[] = DATADIR "vgagraph.";
+static const char gdictname[] = DATADIR "vgadict.";
+static const char mheadname[] = DATADIR "maphead.";
+static const char mfilename[] = DATADIR "maptemp.";
+static const char mfilecama[] = DATADIR "gamemaps.";
+static const char aheadname[] = DATADIR "audiohed.";
+static const char afilename[] = DATADIR "audiot.";
 
 void CA_CannotOpen(const char *string);
 
@@ -445,7 +446,7 @@ void CA_RLEWexpand (word *source, word *dest, int32_t length, word rlewtag)
 
 void CAL_SetupGrFile (void)
 {
-    char fname[13];
+    char fname[13 + sizeof(DATADIR)];
     int handle;
     byte *compseg;
 
@@ -547,7 +548,7 @@ void CAL_SetupMapFile (void)
     int     i;
     int handle;
     int32_t length,pos;
-    char fname[13];
+    char fname[13 + sizeof(DATADIR)];
 
 //
 // load maphead.ext (offsets and tileinfo for map file)
@@ -571,7 +572,7 @@ void CAL_SetupMapFile (void)
 // open the data file
 //
 #ifdef CARMACIZED
-    strcpy(fname, "gamemaps.");
+    strcpy(fname, mfilecama);
     strcat(fname, extension);
 
     maphandle = open(fname, O_RDONLY | O_BINARY);
@@ -627,7 +628,7 @@ void CAL_SetupMapFile (void)
 
 void CAL_SetupAudioFile (void)
 {
-    char fname[13];
+    char fname[13 + sizeof(DATADIR)];
 
 //
 // load audiohed.ext (offsets for audio file)

id_pm.cpp

@@ -16,7 +16,7 @@ uint8_t **PMPages;
 
 void PM_Startup()
 {
-    char fname[13] = "vswap.";
+    char fname[13 + sizeof(DATADIR)] = DATADIR "vswap.";
     strcat(fname,extension);
 
     FILE *file = fopen(fname,"rb");

version.h

@@ -2,6 +2,10 @@
 #define _VERSION_H_
 
 #ifndef VERSIONALREADYCHOSEN              // used for batch compiling
+
+#ifndef DATADIR
+#define DATADIR "/usr/share/games/wolf3d/"
+#endif
 
 /* Defines used for different versions */
 

wl_menu.cpp

@@ -4029,12 +4029,12 @@ CheckForEpisodes (void)
 //
 #ifdef JAPAN
 #ifdef JAPDEMO
-    if(!stat("vswap.wj1", &statbuf))
+    if(!stat(DATADIR "vswap.wj1", &statbuf))
     {
         strcpy (extension, "wj1");
         numEpisodesMissing = 5;
 #else
-    if(!stat("vswap.wj6", &statbuf))
+    if(!stat(DATADIR "vswap.wj6", &statbuf))
     {
         strcpy (extension, "wj6");
 #endif
@@ -4052,7 +4052,7 @@ CheckForEpisodes (void)
 // ENGLISH
 //
 #ifdef UPLOAD
-    if(!stat("vswap.wl1", &statbuf))
+    if(!stat(DATADIR "vswap.wl1", &statbuf))
     {
         strcpy (extension, "wl1");
         numEpisodesMissing = 5;
@@ -4061,7 +4061,7 @@ CheckForEpisodes (void)
         Quit ("NO WOLFENSTEIN 3-D DATA FILES to be found!");
 #else
 #ifndef SPEAR
-    if(!stat("vswap.wl6", &statbuf))
+    if(!stat(DATADIR "vswap.wl6", &statbuf))
     {
         strcpy (extension, "wl6");
         NewEmenu[2].active =
@@ -4074,15 +4074,15 @@ CheckForEpisodes (void)
     }
     else
     {
-        if(!stat("vswap.wl3", &statbuf))
+        if(!stat(DATADIR "vswap.wl3", &statbuf))
         {
             strcpy (extension, "wl3");
             numEpisodesMissing = 3;
             NewEmenu[2].active = NewEmenu[4].active = EpisodeSelect[1] = EpisodeSelect[2] = 1;
         }
         else
         {
-            if(!stat("vswap.wl1", &statbuf))
+            if(!stat(DATADIR "vswap.wl1", &statbuf))
             {
                 strcpy (extension, "wl1");
                 numEpisodesMissing = 5;
@@ -4099,28 +4099,28 @@ CheckForEpisodes (void)
 #ifndef SPEARDEMO
     if(param_mission == 0)
     {
-        if(!stat("vswap.sod", &statbuf))
+        if(!stat(DATADIR "vswap.sod", &statbuf))
             strcpy (extension, "sod");
         else
             Quit ("NO SPEAR OF DESTINY DATA FILES TO BE FOUND!");
     }
     else if(param_mission == 1)
     {
-        if(!stat("vswap.sd1", &statbuf))
+        if(!stat(DATADIR "vswap.sd1", &statbuf))
             strcpy (extension, "sd1");
         else
             Quit ("NO SPEAR OF DESTINY DATA FILES TO BE FOUND!");
     }
     else if(param_mission == 2)
     {
-        if(!stat("vswap.sd2", &statbuf))
+        if(!stat(DATADIR "vswap.sd2", &statbuf))
             strcpy (extension, "sd2");
         else
             Quit ("NO SPEAR OF DESTINY DATA FILES TO BE FOUND!");
     }
     else if(param_mission == 3)
     {
-        if(!stat("vswap.sd3", &statbuf))
+        if(!stat(DATADIR "vswap.sd3", &statbuf))
             strcpy (extension, "sd3");
         else
             Quit ("NO SPEAR OF DESTINY DATA FILES TO BE FOUND!");
@@ -4130,7 +4130,7 @@ CheckForEpisodes (void)
     strcpy (graphext, "sod");
     strcpy (audioext, "sod");
 #else
-    if(!stat("vswap.sdm", &statbuf))
+    if(!stat(DATADIR "vswap.sdm", &statbuf))
     {
         strcpy (extension, "sdm");
     }