WIP fixes to ragdoll simple physics mode (see #895). When simple physics is enabled, only the collider of the character moves and all the limbs and joints are disabled. This caused "attempted to move pulljoint anchor extremely far" errors, because the game still attempted to move the limbs to the collider via pull joints. TODO: do more testing to make sure simple physics doesn't cause other physics errors, fix dragging in simple physics mode.

Barotrauma/BarotraumaShared/Source/Characters/Animation/HumanoidAnimController.cs

@@ -516,17 +516,30 @@ namespace Barotrauma
 
         void UpdateStandingSimple()
         {
-            movement = MathUtils.SmoothStep(movement, TargetMovement, movementLerp);
-
-            if (inWater && movement.LengthSquared() > 0.00001f)
-            {
-                movement = Vector2.Normalize(movement);
-            }
-
-            if (Math.Abs(movement.X)<0.005f)
+            if (Math.Abs(movement.X) < 0.005f)
             {
                 movement.X = 0.0f;
             }
+
+            if (InWater)
+            {
+                if (inWater && movement.LengthSquared() > 0.00001f)
+                {
+                    movement = Vector2.Normalize(movement);
+                }
+                movement = MathUtils.SmoothStep(movement, TargetMovement, movementLerp);
+                Collider.LinearVelocity = Vector2.Lerp(Collider.LinearVelocity, movement * swimSpeed, movementLerp);
+            }
+            else
+            {
+                movement = MathUtils.SmoothStep(movement, TargetMovement * walkSpeed, movementLerp);
+                if (onGround && (!character.IsRemotePlayer || GameMain.Server != null))
+                {
+                    Collider.LinearVelocity = new Vector2(
+                            movement.X,
+                            Collider.LinearVelocity.Y > 0.0f ? Collider.LinearVelocity.Y * 0.5f : Collider.LinearVelocity.Y);
+                }
+            }
         }
 
         private void ClimbOverObstacles()