X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fcarfire;a=blobdiff_plain;f=CarFire%2FCarFire%2FCarFire%2FMovementManager.cs;h=3511e4202d1af2e711f2485a81088ee781cfd7f2;hp=e7002035b6509caec0f80f5e5cf980c21190f8d5;hb=af9deb873b24dadd0d509ce199fc6cac2b3efbc9;hpb=681f16a95c1c67bdd40ed16842a70f8e10ba31e1

diff --git a/CarFire/CarFire/CarFire/MovementManager.cs b/CarFire/CarFire/CarFire/MovementManager.cs
index e700203..3511e42 100644
--- a/CarFire/CarFire/CarFire/MovementManager.cs
+++ b/CarFire/CarFire/CarFire/MovementManager.cs
@@ -103,6 +103,24 @@ namespace CarFire
             Update(timeSpan, false, false, false, false);
         }
 
+        /// <summary>
+        /// Update the movement manager with the timeslice and a direction.
+        /// </summary>
+        /// <param name="timeSpan">The timeslice.</param>
+        /// <param name="direction">Direction you want to move.</param>
+        public void Update(TimeSpan timeSpan, Direction direction)
+        {
+            if (direction == Direction.Left) Update(timeSpan, true, false, false, false);
+            else if (direction == Direction.UpperLeft) Update(timeSpan, true, false, true, false);
+            else if (direction == Direction.Up) Update(timeSpan, false, false, true, false);
+            else if (direction == Direction.UpperRight) Update(timeSpan, false, true, true, false);
+            else if (direction == Direction.Right) Update(timeSpan, false, true, false, false);
+            else if (direction == Direction.LowerRight) Update(timeSpan, false, true, false, true);
+            else if (direction == Direction.Down) Update(timeSpan, false, false, false, true);
+            else if (direction == Direction.LowerLeft) Update(timeSpan, true, false, false, true);
+            else Update(timeSpan);
+        }
+
         /// <summary>
         /// Update the movement manager with the timeslice and the directions
         /// the object is supposed to go.  The directions will be ignored if the
@@ -221,6 +239,34 @@ namespace CarFire
             else return Direction.None;
         }
 
+        /// <summary>
+        /// Helper method to get the general Direction type if you want to move
+        /// from one cell to another.
+        /// <param name="a">Starting point.</param>
+        /// <param name="b">Destination point.</param>
+        /// <returns>The direction toward the cell.</returns>
+        public static Direction GetDirection(Point a, Point b)
+        {
+            int dx = b.X - a.X;
+            int dy = b.Y - a.Y;
+
+            if (dx < 0)
+            {
+                if (dy < 0) return Direction.UpperLeft;
+                else if (dy > 0) return Direction.LowerLeft;
+                else return Direction.Left;
+            }
+            else if (dx > 0)
+            {
+                if (dy < 0) return Direction.UpperRight;
+                else if (dy > 0) return Direction.LowerRight;
+                else return Direction.Right;
+            }
+            else if (dy < 0) return Direction.Up;
+            else if (dy > 0) return Direction.Down;
+            else return Direction.None;
+        }
+
         #endregion