X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Fgame_sp%2Fvb_lib.c;h=c2a9fceea2bd0ce0c68f109ec1abc6d18b26e622;hb=572a4bab20b6f36ef1a4782094b27ac5a703a476;hp=d88c8e36061e3d3d67685232923c4c8df4f15e2b;hpb=91c0172a97f1323e573684a456de436332c8ea34;p=rocksndiamonds.git

diff --git a/src/game_sp/vb_lib.c b/src/game_sp/vb_lib.c
index d88c8e36..c2a9fcee 100644
--- a/src/game_sp/vb_lib.c
+++ b/src/game_sp/vb_lib.c
@@ -13,11 +13,30 @@
 
 
 /* helper functions for constructs not supported by C */
+
+#if 1
+
+void *REDIM_1D(int data_size, int first_data_pos, int last_data_pos)
+{
+  /* for a buffer of n elements, first_data_pos is 0 and last_data_pos is n-1 */
+  /* a negative value for "first_data_pos" indicates a preceding buffer zone */
+
+  int data_count = last_data_pos - first_data_pos + 1;
+  int buffer_size = data_size * data_count;
+  int buffer_start = data_size * first_data_pos;
+
+  return (checked_calloc(buffer_size) - buffer_start);
+}
+
+#else
+
 void *REDIM_1D(int a, int b, int c)
 {
   return checked_calloc(a * (c - b + 1));
 }
 
+#endif
+
 void *REDIM_2D(int a, int b, int c, int d, int e)
 {
   return 0;
@@ -72,7 +91,8 @@ boolean STRING_IS_LIKE(char *a, char *b)
 
 void FILE_GET(FILE *file, int offset, void *buffer, int num_bytes)
 {
-  fseek(file, offset - 1, SEEK_SET);
+  if (offset != -1)
+    fseek(file, offset - 1, SEEK_SET);
 
   while (num_bytes--)
     *(byte *)buffer++ = fgetc(file);