X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fcarfire;a=blobdiff_plain;f=CarFire%2FCarFire%2FCarFire%2FMap.cs;h=8c744bad3e8a96962288d966ea47c991911d099a;hp=95a8c2c9b75253b17cc4debd169d312ca3cf43f5;hb=af9deb873b24dadd0d509ce199fc6cac2b3efbc9;hpb=c8f76edcbc66e1466db1cfef4bc314a7261670e8

diff --git a/CarFire/CarFire/CarFire/Map.cs b/CarFire/CarFire/CarFire/Map.cs
index 95a8c2c..8c744ba 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
 {
@@ -21,6 +22,30 @@ 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;
@@ -33,7 +58,7 @@ namespace CarFire
         /// <summary>
         /// The type of a map helps determine how the map is intended to be used.
         /// </summary>
-        public enum Type
+        public enum Mode
         {
             None,
             Campaign,
@@ -46,7 +71,7 @@ namespace CarFire
         public class Metadata
         {
             public string Name;
-            public Type Type;
+            public Mode Type;
             public string Author;
             public HashSet<int> NumPlayers = new HashSet<int>();
             public string Tileset;
@@ -54,10 +79,20 @@ 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
 
 
-        #region Public Attributes
+        #region Public Properties
 
         /// <summary>
         /// Get the name of the map.
@@ -67,7 +102,7 @@ namespace CarFire
         /// <summary>
         /// Get the type of the map.
         /// </summary>
-        //public Type Type { get { return mData.mMetadata.Type; } }
+        public Mode Type { get { return mData.Metadata.Type; } }
 
         /// <summary>
         /// Get the author of the map.
@@ -92,10 +127,28 @@ namespace CarFire
         // TODO: This should return whatever object we end up using for tilesets.
         public string Tileset { get { return mData.Metadata.Tileset; } }
 
+        /// <summary>
+        /// Get the current grid of open cells.  On the grid, true means
+        /// the cell is open (i.e. an entity can occupy that cell), and false
+        /// means the cell is closed.  Note that, just like Map.IsCellOpen,
+        /// only static scenery is considered; the grid cannot tell you
+        /// whether or not an entity is already occupying the cell.
+        /// </summary>
+        public bool[,] Grid { get { return mData.Grid; } }
+
+        /// <summary>
+        /// Get a list of the raw entity containers loaded with the map.  If you
+        /// want to get the actual entity objects, use Map.GetEntities and
+        /// Map.GetAllEntities instead.
+        /// </summary>
+        public List<RawEntity> RawEntities { get { return mData.Entities; } }
+
 
         /// <summary>
         /// Get and set the coordinate of the grid cell that should be in
-        /// the center of the screen when the map is drawn.
+        /// the center of the screen when the map is drawn.  Setting this
+        /// will change the viewport of the map and will effect the return
+        /// values of Map.GetPointFromCoordinates and Map.GetRectangleFromCoordinates.
         /// </summary>
         public Vector2 CenterCell
         {
@@ -103,6 +156,26 @@ namespace CarFire
             set { mView.CenterCell = value; }
         }
 
+        /// <summary>
+        /// Get and set the zoom of the map view.  The default zoom is
+        /// Map.PixelsToUnitSquares.
+        /// </summary>
+        public float Zoom
+        {
+            get { return mView.Zoom; }
+            set { mView.Zoom = value; }
+        }
+
+
+        /// <summary>
+        /// Get and set the associated game object.
+        /// </summary>
+        public Game Game
+        {
+            get { return mData.Game; }
+            set { mData.Game = value; }
+        }
+
         #endregion
 
 
@@ -111,10 +184,13 @@ namespace CarFire
         /// <summary>
         /// 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)
+        /// <param name="metadata">The metadata.</param>
+        /// <param name="grid">The grid.</param>
+        /// <param name="entities">The entities.</param>
+        public Map(Metadata metadata, char[,] grid, char defaultTile,
+            List<RawEntity> entities, Point[] playerPositions)
         {
-            mData = new Modal(metadata, grid, entities);
+            mData = new Model(metadata, grid, defaultTile, entities, playerPositions);
             mView = new View(mData);
         }
 
@@ -186,7 +262,7 @@ 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 +271,89 @@ namespace CarFire
 
 
         /// <summary>
-        /// Get the entities loaded from the map file.
+        /// Get the starting position of a player.
+        /// </summary>
+        /// <param name="playerNumber">The number of the player (i.e. 1-4).
+        /// This number must be a valid player number.</param>
+        /// <returns>The starting position of the player.</returns>
+        public Point GetStartingPositionForPlayer(int playerNumber)
+        {
+            Debug.Assert(1 <= playerNumber && playerNumber <= NumPlayers.Max());
+            return mData.PlayerPositions[playerNumber];
+        }
+
+
+        /// <summary>
+        /// Get all the entities loaded from the map file.  Exceptions could be
+        /// thrown if there are entities without associated classes.
+        /// </summary>
+        /// <returns>List of entity objects loaded.</returns>
+        public List<IEntity> GetAllEntities()
+        {
+            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>();
+        }
+
+
+        /// <summary>
+        /// Set the tile of a cell.
         /// </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()
+        /// <param name="x">X-coordinate.</param>
+        /// <param name="y">Y-coordinate.</param>
+        /// <param name="tile">The character representing the tile.</param>
+        public void SetCell(int x, int y, char tile)
+        {
+            mData.SetCell(x, y, tile);
+        }
+
+        /// <summary>
+        /// Set the tile of a cell.
+        /// </summary>
+        /// <param name="point">X,Y-coordinates.</param>
+        /// <param name="tile">The character representing the tile.</param>
+        public void SetCell(Point point, char tile)
+        {
+            mData.SetCell(point.X, point.Y, tile);
+        }
+
+
+        /// <summary>
+        /// Clear a cell to the default tile.
+        /// </summary>
+        /// <param name="x">X-coordinate.</param>
+        /// <param name="y">Y-coordinate.</param>
+        public void ClearCell(int x, int y)
         {
-            return mData.Entities;
+            mData.ClearCell(x, y);
+        }
+
+        /// <summary>
+        /// Clear a cell to the default tile.
+        /// </summary>
+        /// <param name="point">X,Y-coordinates.</param>
+        public void ClearCell(Point point)
+        {
+            mData.ClearCell(point.X, point.Y);
+        }
+
+
+        /// <summary>
+        /// Reset the map to the state it was at right after loading.
+        /// </summary>
+        public void Reset()
+        {
+            mData.Reset();
+            mView.Reset();
         }
 
         #endregion
@@ -210,13 +361,18 @@ namespace CarFire
 
         #region Private Types
 
-        class Modal
+        class Model
         {
-            Metadata mMetadata;
-            char[,] mGrid;
-            Dictionary<char, Dictionary<string, string>> mEntities;
+            public Metadata Metadata { get { return mMetadata; } }
+            public List<RawEntity> Entities { get { return mEntities; } }
+            public Point[] PlayerPositions { get { return mPlayerPositions; } }
+            public bool[,] Grid { get { return mBooleanGrid; } }
+
+            public Game Game;
+
 
-            public Modal(Metadata metadata, char[,] grid, Dictionary<char, Dictionary<string, string>> entities)
+            public Model(Metadata metadata, char[,] grid, char defaultTile,
+                List<RawEntity> entities, Point[] playerPositions)
             {
                 Debug.Assert(metadata != null);
                 Debug.Assert(grid != null);
@@ -224,8 +380,12 @@ namespace CarFire
                 Debug.Assert(metadata.GridWidth * metadata.GridHeight == grid.Length);
 
                 mMetadata = metadata;
-                mGrid = grid;
+                mCleanGrid = grid;
+                mDefaultTile = defaultTile;
                 mEntities = entities;
+                mPlayerPositions = playerPositions;
+
+                Reset();
 
 #if DEBUG
                 Console.WriteLine("Loaded map {0} of type {1} written by {2}.",
@@ -236,31 +396,151 @@ namespace CarFire
             }
 
 
-            public Metadata Metadata { get { return mMetadata; } }
-            public Dictionary<char, Dictionary<string, string>> Entities { get { return mEntities; } }
+            public void Reset()
+            {
+                mGrid = (char[,])mCleanGrid.Clone();
+
+                mBooleanGrid = new bool[mMetadata.GridWidth, mMetadata.GridHeight];
+                for (int x = 0; x < mMetadata.GridWidth; x++)
+                {
+                    for (int y = 0; y < mMetadata.GridHeight; y++)
+                    {
+                        mBooleanGrid[x, y] = IsCellOpen(x, y);
+                    }
+                }
+            }
 
 
             public bool IsCellOpen(int x, int y)
             {
                 // TODO: Still need to define characters for types of scenery.
-                return mGrid[x, y] == ' ';
+                if (IsOnMap(x, y)) return mGrid[x, y] == ' ';
+                return false;
+            }
+
+            public void SetCell(int x, int y, char tile)
+            {
+                if (IsOnMap(x, y))
+                {
+                    mGrid[x, y] = tile;
+                    mBooleanGrid[x, y] = IsCellOpen(x, y);
+                }
+            }
+
+            public void ClearCell(int x, int y)
+            {
+                SetCell(x, y, mDefaultTile);
             }
+
+            public bool IsOnMap(int x, int y)
+            {
+                return 0 <= x && x < Metadata.GridWidth && 0 <= y && y < Metadata.GridHeight;
+            }
+
+
+            public List<IEntity> GetAllEntities()
+            {
+                List<IEntity> list = new List<IEntity>();
+
+                foreach (RawEntity raw in mEntities)
+                {
+                    if (raw.Attributes.ContainsKey("type"))
+                    {
+                        string typename = raw.Attributes["type"];
+
+                        object[] args = new object[4];
+                        args[0] = raw.Id;
+                        args[1] = raw.Position;
+                        args[2] = raw.Attributes;
+                        args[3] = Game;
+
+                        try
+                        {
+                            IEntity entity = (IEntity)Activator.CreateInstance(System.Type.GetType("CarFire." + typename), args);
+                            if (entity != null)
+                            {
+                                entity.LoadContent(Game.ContentManager);
+                                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[4];
+                        args[0] = raw.Id;
+                        args[1] = raw.Position;
+                        args[2] = raw.Attributes;
+                        args[3] = Game;
+
+                        T entity = (T)Activator.CreateInstance(type, args);
+                        if (entity != null)
+                        {
+                            ((IEntity)entity).LoadContent(Game.ContentManager);
+                            list.Add(entity);
+                        }
+                        else throw new RuntimeException("Entity of type " + typename + " not loaded because an entity class can't be found.");
+                    }
+                }
+
+                return list;
+            }
+
+
+            Metadata mMetadata;
+            char[,] mGrid;
+            char[,] mCleanGrid;
+            bool[,] mBooleanGrid;
+            char mDefaultTile;
+            List<RawEntity> mEntities;
+            Point[] mPlayerPositions;
         }
 
         class View
         {
-            Modal mData;
-
             public Vector2 CenterCell;
-            Viewport mViewport;
+            public float Zoom;
 
 
-            public View(Modal data)
+            public View(Model data)
             {
                 Debug.Assert(data != null);
                 mData = data;
+
+                Reset();
             }
 
+
+            public void Reset()
+            {
+                CenterCell = Vector2.Zero;
+                Zoom = PixelsToUnitSquares;
+            }
+
+
             public void Draw(SpriteBatch spriteBatch)
             {
                 mViewport = spriteBatch.GraphicsDevice.Viewport;
@@ -282,18 +562,30 @@ namespace CarFire
                 }
             }
 
-            /// <summary>
-            /// Get a matrix to transform a point from grid-space to screen coordinates.  This
-            /// method uses the viewport to bound the edges of the map such that the camera
-            /// will not show anything outside of the grid.
-            /// </summary>
-            /// <param name="center">The point to put in the center.</param>
-            /// <returns>The transformation matrix.</returns>
+
+            public Point GetPointFromCoordinates(float x, float y)
+            {
+                Matrix transform = GetTransformation(CenterCell);
+                Vector2 point = Vector2.Transform(new Vector2(x, y), transform);
+
+                return new Point((int)point.X, (int)point.Y);
+            }
+
+            public Rectangle GetRectangleFromCoordinates(float x, float y)
+            {
+                Matrix transform = GetTransformation(CenterCell);
+                Vector2 point = Vector2.Transform(new Vector2(x, y), transform);
+                
+                return new Rectangle((int)Math.Round(point.X, 0), (int)Math.Round(point.Y, 0), (int)Math.Round(Zoom, 0), (int)Math.Round(Zoom, 0));
+            }
+
+
+
             Matrix GetTransformation(Vector2 center)
             {
-                float halfRatio = PixelsToUnitSquares * 0.5f;
+                float halfRatio = Zoom * 0.5f;
                 Matrix transform = Matrix.CreateTranslation(-center.X, -center.Y, 0.0f);
-                transform *= Matrix.CreateScale(PixelsToUnitSquares);
+                transform *= Matrix.CreateScale(Zoom);
                 transform *= Matrix.CreateTranslation(mViewport.Width * 0.5f - halfRatio,
                     mViewport.Height * 0.5f - halfRatio, 0.0f);
 
@@ -314,21 +606,8 @@ namespace CarFire
             }
 
 
-            public Point GetPointFromCoordinates(float x, float y)
-            {
-                Matrix transform = GetTransformation(CenterCell);
-                Vector2 point = Vector2.Transform(new Vector2(x, y), transform);
-
-                return new Point((int)point.X, (int)point.Y);
-            }
-
-            public Rectangle GetRectangleFromCoordinates(float x, float y)
-            {
-                Matrix transform = GetTransformation(CenterCell);
-                Vector2 point = Vector2.Transform(new Vector2(x, y), transform);
-                
-                return new Rectangle((int)point.X, (int)point.Y, (int)PixelsToUnitSquares, (int)PixelsToUnitSquares);
-            }
+            Model mData;
+            Viewport mViewport;
         }
 
         #endregion
@@ -336,7 +615,7 @@ namespace CarFire
 
         #region Private Variables
 
-        Modal mData;
+        Model mData;
         View mView;
 
         #endregion