diff -r d424c7f8b342 -r e6ef8fe314bd misc/libphyslayer/hwpacksmounter.c
--- a/misc/libphyslayer/hwpacksmounter.c	Sat May 11 21:19:44 2013 -0400
+++ b/misc/libphyslayer/hwpacksmounter.c	Sat May 11 21:50:14 2013 -0400
@@ -33,3 +33,24 @@
 
     PHYSFS_freeList(filesList);
 }
+
+PHYSFS_DECL void hedgewarsMountPackage(char * fileName)
+{
+    int fileNameLength = strlen(fileName);
+    if (fileNameLength > 4)
+        if (strcmp(fileName + fileNameLength - 4, ".hwp") == 0)
+        {
+            const char * dir = PHYSFS_getRealDir(fileName);
+            if(dir)
+            {
+                char * fullPath = (char *)malloc(strlen(dir) + fileNameLength + 2);
+                strcpy(fullPath, dir);
+                strcat(fullPath, "/");
+                strcat(fullPath, fileName);
+
+                PHYSFS_mount(fullPath, NULL, 0);
+
+                free(fullPath);
+            }
+        }
+}