[BLIND] Add special case to skip vdistsb to prevent a set-back loop.

~ Observed on PaperSpigot 1.7.10
NoCheatPlus · Dec 8, 2015 · 61d5840 · 61d5840
1 parent 0645922
commit 61d5840
Showing 1 changed file with 10 additions and 2 deletions.
diff --git a/NCPCore/src/main/java/fr/neatmonster/nocheatplus/checks/moving/SurvivalFly.java b/NCPCore/src/main/java/fr/neatmonster/nocheatplus/checks/moving/SurvivalFly.java
@@ -1017,8 +1017,16 @@ else if (data.lastYDist >= 0.0 && yDistance <= 0.0 && yDistance > -GRAVITY_MAX -
                 // Skip if the player could step up.
                 if (yDistance > cc.sfStepHeight || !tags.contains("lostground_couldstep")) {
                     if (data.getOrUseVerticalVelocity(yDistance) == null) {
-                        vDistanceAboveLimit = Math.max(vDistanceAboveLimit, totalVDistViolation);
-                        tags.add("vdistsb");
+                        // Last minute special case.
+                        if (data.lastYDist == Double.MAX_VALUE && hDistance == 0.0 
+                                && yDistance > 0.0 && yDistance < 0.000000005 && Math.abs(totalVDistViolation) < 0.000000005
+                                && !resetFrom && !resetTo && !data.noFallAssumeGround
+                                ) {
+                            // Special case after teleport to in-air (PaperSpigot, might confine further by server type/version).
+                        } else {
+                            vDistanceAboveLimit = Math.max(vDistanceAboveLimit, totalVDistViolation);
+                            tags.add("vdistsb");
+                        }
                     }
                 }
             }