diff --git a/source/src/tools.cpp b/source/src/tools.cpp
index edc6017c..462f49df 100644
--- a/source/src/tools.cpp
+++ b/source/src/tools.cpp
@@ -8,6 +8,7 @@
 #include <unistd.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#include <dirent.h>
 #endif
 
 string homedir = "";
@@ -164,6 +165,62 @@ char *loadfile(const char *fn, int *size)
     return buf;
 }
 
+bool listdir(const char *dir, const char *ext, vector<char *> &files)
+{
+    int extsize = ext ? (int)strlen(ext)+1 : 0;
+    #if defined(WIN32)
+    s_sprintfd(pathname)("%s\\*.%s", dir, ext ? ext : "*");
+    WIN32_FIND_DATA FindFileData;
+    HANDLE Find = FindFirstFile(path(pathname), &FindFileData);
+    if(Find != INVALID_HANDLE_VALUE)
+    {
+        do {
+            files.add(newstring(FindFileData.cFileName, (int)strlen(FindFileData.cFileName) - extsize));
+        } while(FindNextFile(Find, &FindFileData));
+        return true;
+    }
+    #else
+    string pathname;
+    s_strcpy(pathname, dir);
+    DIR *d = opendir(path(pathname));
+    if(d)
+    {
+        struct dirent *de;
+        while((de = readdir(d)) != NULL)
+        {
+            if(!ext) files.add(newstring(de->d_name));
+            else
+            {
+                int namelength = (int)strlen(de->d_name) - extsize;
+                if(namelength > 0 && de->d_name[namelength] == '.' && strncmp(de->d_name+namelength+1, ext, extsize-1)==0)
+                    files.add(newstring(de->d_name, namelength));
+            }
+        }
+        closedir(d);
+        return true;
+    }
+    #endif
+    else return false;
+}
+
+int listfiles(const char *dir, const char *ext, vector<char *> &files)
+{
+    int dirs = 0;
+    if(listdir(dir, ext, files)) dirs++;
+    string s;
+    if(homedir[0])
+    {
+        s_sprintf(s)("%s%s", homedir, dir);
+        if(listdir(s, ext, files)) dirs++;
+    }
+    loopv(packagedirs)
+    {
+        s_sprintf(s)("%s%s", packagedirs[i], dir);
+        if(listdir(s, ext, files)) dirs++;
+    }
+    return dirs;
+}
+
 ///////////////////////// misc tools ///////////////////////
 
 bool cmpb(void *b, int n, enet_uint32 c)
diff --git a/source/src/tools.h b/source/src/tools.h
index cf69992a..e5c92335 100644
--- a/source/src/tools.h
+++ b/source/src/tools.h
@@ -98,26 +98,8 @@ struct s_sprintf_f
 #define s_sprintfdlv(d,last,fmt) string d; { va_list ap; va_start(ap, last); formatstring(d, fmt, ap); va_end(ap); }
 #define s_sprintfdv(d,fmt) s_sprintfdlv(d,fmt,fmt)
 
-
 template <class T> void _swap(T &a, T &b) { T t = a; a = b; b = t; }
 
-
-extern char *path(char *s);
-extern const char *parentdir(const char *directory);
-extern bool fileexists(const char *path, const char *mode);
-extern bool createdir(const char *path);
-extern void sethomedir(const char *dir);
-extern void addpackagedir(const char *dir);
-extern const char *findfile(const char *filename, const char *mode);
-extern FILE *openfile(const char *filename, const char *mode);
-#ifndef STANDALONE
-extern gzFile opengzfile(const char *filename, const char *mode);
-#endif
-extern char *loadfile(const char *fn, int *size);
-extern bool cmpb(void *b, int n, enet_uint32 c);
-extern bool cmpf(char *fn, enet_uint32 c);
-extern void endianswap(void *, int, int);
-
 #define loopv(v)    if(false) {} else for(int i = 0; i<(v).length(); i++)
 #define loopvj(v)   if(false) {} else for(int j = 0; j<(v).length(); j++)
 #define loopvk(v)   if(false) {} else for(int k = 0; k<(v).length(); k++)
@@ -484,5 +466,23 @@ inline char *newstring(const char *s, size_t l) { return s_strncpy(newstring(l),
 inline char *newstring(const char *s)           { return newstring(s, strlen(s)); }
 inline char *newstringbuf(const char *s)        { return newstring(s, _MAXDEFSTR-1); }
 
+extern char *path(char *s);
+extern const char *parentdir(const char *directory);
+extern bool fileexists(const char *path, const char *mode);
+extern bool createdir(const char *path);
+extern void sethomedir(const char *dir);
+extern void addpackagedir(const char *dir);
+extern const char *findfile(const char *filename, const char *mode);
+extern FILE *openfile(const char *filename, const char *mode);
+#ifndef STANDALONE
+extern gzFile opengzfile(const char *filename, const char *mode);
+#endif
+extern char *loadfile(const char *fn, int *size);
+extern bool listdir(const char *dir, const char *ext, vector<char *> &files);
+extern int listfiles(const char *dir, const char *ext, vector<char *> &files);
+extern bool cmpb(void *b, int n, enet_uint32 c);
+extern bool cmpf(char *fn, enet_uint32 c);
+extern void endianswap(void *, int, int);
+
 #endif