X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fcarfire;a=blobdiff_plain;f=CarFire%2FCarFire%2FCarFire%2FTrigger.cs;fp=CarFire%2FCarFire%2FCarFire%2FTrigger.cs;h=25cc11efa1ff0ead9f574de5231166729f1ac0a0;hp=0000000000000000000000000000000000000000;hb=d167160264cd2c33de81a71039eddbb959c40bb2;hpb=3ca5852a7df47d4129743ed449816c7c7347b699

diff --git a/CarFire/CarFire/CarFire/Trigger.cs b/CarFire/CarFire/CarFire/Trigger.cs
new file mode 100644
index 0000000..25cc11e
--- /dev/null
+++ b/CarFire/CarFire/CarFire/Trigger.cs
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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using Microsoft.Xna.Framework.Content;
+
+namespace CarFire
+{
+    /// <summary>
+    /// A trigger is an invisible entity whose only purpose is
+    /// to check a condition and run a script when the condition
+    /// is right.
+    /// </summary>
+    public class Trigger : IEntity
+    {
+        #region Public Methods
+
+        public Trigger(char identifier, Point position, Dictionary<string, string> info, Game game)
+        {
+            mGame = game;
+            mPrevCondition = false;
+            mCoordinates = position;
+
+            string condition;
+            if (info.TryGetValue("condition", out condition))
+            {
+                mCondition = new Script(condition, game);
+            }
+            else throw new Exception("Triggers must define a condition script.");
+
+            string eventt;
+            if (info.TryGetValue("event", out eventt))
+            {
+                mEvent = new Script(eventt, game);
+            }
+            else throw new Exception("Triggers must define an event script.");
+        }
+
+        public void Update(TimeSpan timeSpan)
+        {
+            Player player = mGame.GetPlayerAtCoordinates(mCoordinates);
+            if (player != null)
+            {
+                bool condition = mCondition.Run(player);
+                if (condition && condition != mPrevCondition)
+                {
+                    mEvent.Run(player);
+                }
+                mPrevCondition = condition;
+            }
+            else
+            {
+                mPrevCondition = false;
+            }
+        }
+
+        public void LoadContent(ContentManager contentManager)
+        {
+            // No implementation needed.
+        }
+
+        public void Draw(SpriteBatch spriteBatch)
+        {
+            // No implementation needed.
+        }
+
+        public Vector2 Position
+        {
+            get { return Vector2.Zero; }
+        }
+
+        public Point Coordinates
+        {
+            get { return new Point(-1, -1); }
+        }
+
+        #endregion
+
+
+        #region Private Variables
+
+        Script mCondition;
+        Script mEvent;
+        Game mGame;
+        bool mPrevCondition;
+        Point mCoordinates;
+
+        #endregion
+    }
+}