X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=CarFire%2FCarFire%2FCarFire%2FMap.cs;h=3b10663d089a9f06242b68aa0082625a40876cf5;hb=acee761b9ba231f96187ebd7e051491a867287dc;hp=95a8c2c9b75253b17cc4debd169d312ca3cf43f5;hpb=c8f76edcbc66e1466db1cfef4bc314a7261670e8;p=chaz%2Fcarfire

diff --git a/CarFire/CarFire/CarFire/Map.cs b/CarFire/CarFire/CarFire/Map.cs
index 95a8c2c..3b10663 100644
--- a/CarFire/CarFire/CarFire/Map.cs
+++ b/CarFire/CarFire/CarFire/Map.cs
@@ -7,6 +7,7 @@ using System.Runtime.Serialization;
 using System.Diagnostics;
 using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Graphics;
+using System.Reflection;
 
 namespace CarFire
 {
@@ -21,9 +22,33 @@ namespace CarFire
         // DEBUG: Tilesets not implemented at all.
         public static Texture2D DefaultTile;
 
+        #region Public Exceptions
+
+        /// <summary>
+        /// This exception is thrown during the loading of a map if any
+        /// part of the map file is inconsistent with the expected format
+        /// and order.
+        /// </summary>
+        public class RuntimeException : System.ApplicationException
+        {
+            public RuntimeException() { }
+
+            public RuntimeException(string message) :
+                base(message) { }
+
+            public RuntimeException(string message, System.Exception inner) :
+                base(message, inner) { }
+
+            protected RuntimeException(SerializationInfo info, StreamingContext context) :
+                base(info, context) { }
+        }
+
+        #endregion
+
+
         #region Public Constants
 
-        public const float PixelsToUnitSquares = 64.0f;
+        public const float PixelsToUnitSquares = 8.0f;
 
         #endregion
 
@@ -54,6 +79,16 @@ namespace CarFire
             public int GridHeight;
         }
 
+        /// <summary>
+        /// The container class for information about an entity defined in the map.
+        /// </summary>
+        public class RawEntity
+        {
+            public char Id;
+            public Point Position;
+            public Dictionary<string, string> Attributes = new Dictionary<string, string>();
+        }
+
         #endregion
 
 
@@ -92,6 +127,11 @@ namespace CarFire
         // TODO: This should return whatever object we end up using for tilesets.
         public string Tileset { get { return mData.Metadata.Tileset; } }
 
+        /// <summary>
+        /// Get a list of the raw entity containers loaded with the map.
+        /// </summary>
+        public List<RawEntity> RawEntities { get { return mData.Entities; } }
+
 
         /// <summary>
         /// Get and set the coordinate of the grid cell that should be in
@@ -112,7 +152,7 @@ namespace CarFire
         /// Construct a map with the provided map data.
         /// </summary>
         /// <param name="data">Map data.</param>
-        public Map(Metadata metadata, char[,] grid, Dictionary<char, Dictionary<string, string>> entities)
+        public Map(Metadata metadata, char[,] grid, List<RawEntity> entities)
         {
             mData = new Modal(metadata, grid, entities);
             mView = new View(mData);
@@ -186,7 +226,7 @@ namespace CarFire
         /// <summary>
         /// Determine whether or not a cell can be occupied by a game entity.
         /// </summary>
-        /// <param name="x">X,Y-coordinates.</param>
+        /// <param name="point">X,Y-coordinates.</param>
         /// <returns>True if cell can be occupied, false otherwise.</returns>
         public bool IsCellOpen(Point point)
         {
@@ -195,14 +235,24 @@ namespace CarFire
 
 
         /// <summary>
-        /// Get the entities loaded from the map file.
+        /// Get all the entities loaded from the map file.  Exceptions could be
+        /// thrown if there are entities without associated classes.
         /// </summary>
-        /// <returns>Dictionary of entities.  The keys are the entity
-        /// identifiers and the value is a dictionary of key-value pairs
-        /// associated with that entity.</returns>
-        public Dictionary<char, Dictionary<string, string>> GetEntities()
+        /// <returns>List of entity objects loaded.</returns>
+        public List<object> GetAllEntities()
         {
-            return mData.Entities;
+            return mData.GetAllEntities();
+        }
+
+        /// <summary>
+        /// Get the entities of a certain type loaded from the map file.  Exceptions
+        /// could be thrown if there are entities without associated classes.
+        /// </summary>
+        /// <typeparam name="T">Type of the entity you want a list of.</typeparam>
+        /// <returns>List of entity objects loaded.</returns>
+        public List<T> GetEntities<T>()
+        {
+            return mData.GetEntities<T>();
         }
 
         #endregion
@@ -214,9 +264,9 @@ namespace CarFire
         {
             Metadata mMetadata;
             char[,] mGrid;
-            Dictionary<char, Dictionary<string, string>> mEntities;
+            List<RawEntity> mEntities;
 
-            public Modal(Metadata metadata, char[,] grid, Dictionary<char, Dictionary<string, string>> entities)
+            public Modal(Metadata metadata, char[,] grid, List<RawEntity> entities)
             {
                 Debug.Assert(metadata != null);
                 Debug.Assert(grid != null);
@@ -237,7 +287,7 @@ namespace CarFire
 
 
             public Metadata Metadata { get { return mMetadata; } }
-            public Dictionary<char, Dictionary<string, string>> Entities { get { return mEntities; } }
+            public List<RawEntity> Entities { get { return mEntities; } }
 
 
             public bool IsCellOpen(int x, int y)
@@ -245,6 +295,69 @@ namespace CarFire
                 // TODO: Still need to define characters for types of scenery.
                 return mGrid[x, y] == ' ';
             }
+
+
+            public List<object> GetAllEntities()
+            {
+                List<object> list = new List<object>();
+
+                foreach (RawEntity raw in mEntities)
+                {
+                    if (raw.Attributes.ContainsKey("type"))
+                    {
+                        string typename = raw.Attributes["type"];
+
+                        object[] args = new object[3];
+                        args[0] = raw.Id;
+                        args[1] = raw.Position;
+                        args[2] = raw.Attributes;
+
+                        try
+                        {
+
+                            object entity = Activator.CreateInstance(System.Type.GetType("CarFire." + typename), args);
+                            if (entity != null) list.Add(entity);
+                            else throw new RuntimeException();
+                        }
+#pragma warning disable 0168
+                        catch (System.Exception ex)
+#pragma warning restore 0168
+                        {
+                            throw new RuntimeException("Entity of type " + typename + " not loaded because an entity class can't be found.");
+                        }
+                    }
+                    else
+                    {
+                        Console.WriteLine("Ignoring entity with identifier " + raw.Id + " since it has no type key.");
+                    }
+                }
+
+                return list;
+            }
+
+            public List<T> GetEntities<T>()
+            {
+                System.Type type = typeof(T);
+                List<T> list = new List<T>();
+
+                string typename = typeof(T).Name;
+                foreach (RawEntity raw in mEntities)
+                {
+                    if (raw.Attributes.ContainsKey("type") && typename == raw.Attributes["type"])
+                    {
+                        object[] args = new object[3];
+                        args[0] = raw.Id;
+                        args[1] = raw.Position;
+                        args[2] = raw.Attributes;
+
+                        T entity = (T)Activator.CreateInstance(type, args);
+                        if (entity != null) list.Add(entity);
+                        else throw new RuntimeException("Entity of type " + typename + " not loaded because an entity class can't be found.");
+                    }
+                }
+
+                return list;
+            }
         }
 
         class View