From e55fe37803a6fa10aea701b422e94252ad679d8d Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sun, 8 Aug 2021 17:23:17 +0200
Subject: [PATCH] gravityLevelDiff is now clamped to [-1,1]

---
 mapeffects.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/mapeffects.cpp b/mapeffects.cpp
index e495a44c..f5d21f16 100644
--- a/mapeffects.cpp
+++ b/mapeffects.cpp
@@ -587,8 +587,12 @@ EX int gravityLevel(cell *c) {
   }
 
 EX int gravityLevelDiff(cell *c, cell *d) {
-  if(c->land != laWestWall || d->land != laWestWall)
-    return gravityLevel(c) - gravityLevel(d);
+  if(c->land != laWestWall || d->land != laWestWall) {
+    int res = gravityLevel(c) - gravityLevel(d);
+    if(res > 1) return 1;
+    if(res < -1) return -1;
+    return res;
+    }
   
   if(shmup::on) return 0;