Add magic dehacked comment to enable long cheat sequences (also for Chex

Quest support)

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 1160

1 files changed, 19 insertions, 1 deletions

diff --git a/src/deh_cheat.c b/src/deh_cheat.c
index 28f32572..f501adbf 100644
--- a/src/deh_cheat.c
+++ b/src/deh_cheat.c
@@ -108,10 +108,28 @@ static void DEH_CheatParseLine(deh_context_t *context, char *line, void *tag)
 
     i = 0;
 
-    while (i<cheat->seq->sequence_len && unsvalue[i] != 0 && unsvalue[i] != 0xff)
+    while (unsvalue[i] != 0 && unsvalue[i] != 0xff)
     {
+        // If the cheat length exceeds the Vanilla limit, stop.  This
+        // does not apply if we have the limit turned off.
+
+        if (!deh_allow_long_cheats && i >= cheat->seq->sequence_len)
+        {
+            DEH_Warning(context, "Cheat sequence longer than supported by "
+                                 "Vanilla dehacked");
+            break;
+        }
+
         cheat->seq->sequence[i] = unsvalue[i];
         ++i;
+
+        // Absolute limit - don't exceed
+
+        if (i >= MAX_CHEAT_LEN - cheat->seq->parameter_chars)
+        {
+            DEH_Error(context, "Cheat sequence too long!");
+            return;
+        }
     }
 
     cheat->seq->sequence[i] = '\0';