- projectiles don't stick to colliders

- fixed impacts weaker than the damage threshold giving characters health
- possible to slide down ladders
- improved IndoorsSteeringManager ladder climbing logic

Subsurface/Source/Characters/AI/IndoorsSteeringManager.cs

@@ -90,7 +90,9 @@ namespace Barotrauma
             
             var collider = character.AnimController.Collider;
             //if not in water and the waypoint is between the top and bottom of the collider, no need to move vertically
-            if (!character.AnimController.InWater && diff.Y < collider.height / 2 + collider.radius)
+            if (!character.AnimController.InWater && 
+                character.AnimController.Anim != AnimController.Animation.Climbing &&
+                diff.Y < collider.height / 2 + collider.radius)
             {
                 diff.Y = 0.0f;
             }
@@ -162,20 +164,31 @@ namespace Barotrauma
 
             if (character.AnimController.Anim == AnimController.Animation.Climbing)
             {
-                float x = currentPath.CurrentNode.SimPosition.X - pos.X;
-                float y = (currentPath.CurrentNode.SimPosition.Y) - pos.Y;
+                Vector2 diff = currentPath.CurrentNode.SimPosition - pos;
                 
-                if (Math.Abs(x) < Math.Abs(y) * 10.0f)                    
+                if (currentPath.CurrentNode.Ladders != null)
                 {
-                    x = 0.0f;                    
-                }
-                else if (hull != null)
-                {
-                    if (character.AnimController.GetColliderBottom().Y < hull.Rect.Y - hull.Rect.Height + 10.0f) x = 0.0f;
+                    //climbing ladders -> don't move horizontally
+                    diff.X = 0.0f;
+
+                    //at the same height as the waypoint
+                    if (currentPath.CurrentNode.SimPosition.Y > colliderBottom.Y &&
+                        currentPath.CurrentNode.SimPosition.Y < colliderBottom.Y + collider.height + collider.radius * 2)
+                    {
+                        float heightFromFloor = character.AnimController.GetColliderBottom().Y - character.AnimController.FloorY;
+
+                        //we can safely skip to the next waypoint if the character is at a safe height above the floor,
+                        //or if the next waypoint in the path is also on ladders
+                        if ((heightFromFloor > 0.0f && heightFromFloor < collider.height) || 
+                            (currentPath.NextNode != null && currentPath.NextNode.Ladders != null))
+                        {
+                            currentPath.SkipToNextNode();
+                        }
+                    }
                 }
 
                 character.AnimController.IgnorePlatforms = false;
-                return new Vector2(x,y);
+                return diff;
             }
 
             return currentPath.CurrentNode.SimPosition - pos;

Subsurface/Source/Characters/AI/PathFinder.cs

@@ -172,7 +172,7 @@ namespace Barotrauma
                             start, node.Waypoint.SimPosition, null, 
                             Physics.CollisionWall | Physics.CollisionLevel | Physics.CollisionStairs | Physics.CollisionPlatform);
 
-                        if (body != null && body.UserData is Structure) continue;
+                        if (body != null && body.UserData is Structure && !((Structure)body.UserData).IsPlatform) continue;
                     }
 
                     closestDist = dist;