From b392e7b60ee954f1a8476d2cd2d92538b1873b2f Mon Sep 17 00:00:00 2001
From: Christian Heller <c.heller@plomlompom.de>
Date: Wed, 28 Aug 2013 02:22:58 +0200
Subject: [PATCH] Fixed bug that corrupted record files.

---
 src/main.c |  2 +-
 src/misc.c | 21 +++++++++++++++------
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/src/main.c b/src/main.c
index f811867..1f9d7f7 100644
--- a/src/main.c
+++ b/src/main.c
@@ -131,7 +131,7 @@ int main(int argc, char *argv[])
         if (0 == world.interactive)
         {
             file = fopen(recordfile, "r");
-            exit_err(0 == file, &world, err_o);
+            exit_err(NULL == file, &world, err_o);
             exit_err(read_uint32_bigendian(file, &world.seed), &world, err_r);
         }
 
diff --git a/src/misc.c b/src/misc.c
index 8eda126..88d8316 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -119,7 +119,7 @@ extern void turn_over(struct World * world, char action)
     char * err_write = "Trouble in turn_over() with write_uint8() "
                        "writing to opened file 'record_tmp'.";
     char * err_close = "Trouble in turn_over() with fclose() "
-                       "closing opened file 'record_tmp'.";
+                       "closing opened file 'record'.";
     char * err_unl   = "Trouble in turn_over() with unlink() "
                        "unlinking old file 'record'.";
     char * err_move  = "Trouble in turn_over() with rename() "
@@ -128,14 +128,23 @@ extern void turn_over(struct World * world, char action)
     char * recordfile     = "record";
     if (1 == world->interactive)
     {
-        FILE * file = fopen(recordfile_tmp, "a");
-        exit_err(0 == file, world, err_open);
-        exit_err(write_uint8(action, file), world, err_write);
-        exit_err(fclose(file), world, err_close);
+        FILE * file_old = fopen(recordfile, "r");
+        FILE * file_new = fopen(recordfile_tmp, "w");
+        exit_err(0 == file_old, world, err_open);
+        char c = fgetc(file_old);
+        while (EOF != c)
+        {
+            exit_err(write_uint8(c, file_new), world, err_write);
+            c = fgetc(file_old);
+        }
+        exit_err(fclose(file_old), world, err_close);
+        exit_err(write_uint8(action, file_new), world, err_write);
+        err_close = "Trouble in turn_over() with fclose() "
+                    "closing opened file 'record_tmp'.";
+        exit_err(fclose(file_new), world, err_close);
         exit_err(unlink(recordfile), world, err_unl);
         exit_err(rename(recordfile_tmp, recordfile), world, err_move);
     }
-
     world->turn++;
     rrand_seed(world->seed * world->turn);
     struct Monster * monster;
-- 
2.30.2