X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=CarFire%2FCarFire%2FCarFire%2FMap.cs;h=ddfa9d5457b309f80a9fd8a48bad537fcee7ff06;hb=c813c24c363d1a397b18f1d99a877071f20f2d2f;hp=ed8c39fd1957986f0014a404d44c702ed982bfe3;hpb=c5daf1d9adca0c3a826dfa2ac7b6d4f8a64c84a3;p=chaz%2Fcarfire

diff --git a/CarFire/CarFire/CarFire/Map.cs b/CarFire/CarFire/CarFire/Map.cs
index ed8c39f..ddfa9d5 100644
--- a/CarFire/CarFire/CarFire/Map.cs
+++ b/CarFire/CarFire/CarFire/Map.cs
@@ -2,11 +2,12 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
-using Microsoft.Xna.Framework;
 using System.IO;
-using System.Text.RegularExpressions;
 using System.Runtime.Serialization;
 using System.Diagnostics;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using System.Reflection;
 
 namespace CarFire
 {
@@ -18,33 +19,441 @@ namespace CarFire
     /// </summary>
     public class Map
     {
-        #region Types
+        // DEBUG: Tilesets not implemented at all.
+        public static Texture2D DefaultTile;
 
-        public class Data
+        #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 string Author;
-            public string Name;
-            public int MinNumPlayers;
-            public int MaxNumPlayers;
-            public Point Dimensions;
-            public string Tileset;        // TODO: this should be a tilemap object
-            public Type Type;
-            public char[,] Grid;
+            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) { }
         }
-        
-        public enum Type
+
+        #endregion
+
+
+        #region Public Constants
+
+        public const float PixelsToUnitSquares = 60.0f;
+
+        #endregion
+
+
+        #region Public Types
+
+        /// <summary>
+        /// The type of a map helps determine how the map is intended to be used.
+        /// </summary>
+        public enum Mode
         {
             None,
             Campaign,
             Battle
         }
 
+        /// <summary>
+        /// The container class for map metadata.
+        /// </summary>
+        public class Metadata
+        {
+            public string Name;
+            public Mode Type;
+            public string Author;
+            public HashSet<int> NumPlayers = new HashSet<int>();
+            public string Tileset;
+            public int GridWidth;
+            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
+
+        /// <summary>
+        /// Get the name of the map.
+        /// </summary>
+        public string Name { get { return mData.Metadata.Name; } }
+
+        /// <summary>
+        /// Get the type of the map.
+        /// </summary>
+        public Mode Type { get { return mData.Metadata.Type; } }
+
+        /// <summary>
+        /// Get the author of the map.
+        /// </summary>
+        public string Author { get { return mData.Metadata.Author; } }
+
+        /// <summary>
+        /// Get a set of integers containing each allowable number of players.
+        /// </summary>
+        public HashSet<int> NumPlayers { get { return mData.Metadata.NumPlayers; } }
+
+        /// <summary>
+        /// Get the width of the map, in grid units.
+        /// </summary>
+        public int Width { get { return mData.Metadata.GridWidth; } }
+
+        /// <summary>
+        /// Get the height of the map, in grid units.
+        /// </summary>
+        public int Height { get { return mData.Metadata.GridHeight; } }
+
+        // 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
+        /// the center of the screen when the map is drawn.
+        /// </summary>
+        public Vector2 CenterCell
+        {
+            get { return mView.CenterCell; }
+            set { mView.CenterCell = value; }
+        }
+
+        #endregion
+
+
+        #region Public Methods
+
+        /// <summary>
+        /// Construct a map with the provided map data.
+        /// </summary>
+        /// <param name="metadata">The metadata.</param>
+        /// <param name="grid">The grid.</param>
+        /// <param name="entities">The entities.</param>
+        public Map(Metadata metadata, char[,] grid, List<RawEntity> entities)
+        {
+            mData = new Modal(metadata, grid, entities);
+            mView = new View(mData);
+        }
+
+
+        /// <summary>
+        /// Draw a representation of the map to the screen.
+        /// </summary>
+        /// <param name="spriteBatch">The jeewiz.</param>
+        public void Draw(SpriteBatch spriteBatch)
+        {
+            mView.Draw(spriteBatch);
+        }
+
+
+        /// <summary>
+        /// Get a point in screen-space from a coordinate in gridspace.
+        /// </summary>
+        /// <param name="x">X-coordinate.</param>
+        /// <param name="y">Y-coordinate.</param>
+        /// <returns>Transformed point.</returns>
+        public Point GetPointFromCoordinates(float x, float y)
+        {
+            return mView.GetPointFromCoordinates(x, y);
+        }
+
+        /// <summary>
+        /// Get a point in screen-space from a coordinate in gridspace.
+        /// </summary>
+        /// <param name="point">X,Y-coordinates.</param>
+        /// <returns>Transformed point.</returns>
+        public Point GetPointFromCoordinates(Vector2 point)
+        {
+            return mView.GetPointFromCoordinates(point.X, point.Y);
+        }
+
+        /// <summary>
+        /// Get a rectangle in screen-space centered around a coordinate in gridspace.
+        /// </summary>
+        /// <param name="x">X-coordinate.</param>
+        /// <param name="y">Y-coordinate.</param>
+        /// <returns>Transformed rectangle.</returns>
+        public Rectangle GetRectangleFromCoordinates(float x, float y)
+        {
+            return mView.GetRectangleFromCoordinates(x, y);
+        }
+
+        /// <summary>
+        /// Get a rectangle in screen-space centered around a coordinate in gridspace.
+        /// </summary>
+        /// <param name="point">X,Y-coordinates.</param>
+        /// <returns>Transformed rectangle.</returns>
+        public Rectangle GetRectangleFromCoordinates(Vector2 point)
+        {
+            return mView.GetRectangleFromCoordinates(point.X, point.Y);
+        }
+
+
+        /// <summary>
+        /// Determine whether or not a cell can be occupied by a game entity.
+        /// </summary>
+        /// <param name="x">X-coordinate.</param>
+        /// <param name="y">Y-coordinate.</param>
+        /// <returns>True if cell can be occupied, false otherwise.</returns>
+        public bool IsCellOpen(int x, int y)
+        {
+            return mData.IsCellOpen(x, y);
+        }
+
+        /// <summary>
+        /// Determine whether or not a cell can be occupied by a game entity.
+        /// </summary>
+        /// <param name="point">X,Y-coordinates.</param>
+        /// <returns>True if cell can be occupied, false otherwise.</returns>
+        public bool IsCellOpen(Point point)
+        {
+            return mData.IsCellOpen(point.X, point.Y);
+        }
+
+
+        /// <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<object> 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>();
+        }
+
         #endregion
 
 
-        public Map(Data data)
+        #region Private Types
+
+        class Modal
         {
-            Console.WriteLine("Read map " + data.Name + " of type " + data.Type + " written by " + data.Author);
+            Metadata mMetadata;
+            char[,] mGrid;
+            List<RawEntity> mEntities;
+
+            public Modal(Metadata metadata, char[,] grid, List<RawEntity> entities)
+            {
+                Debug.Assert(metadata != null);
+                Debug.Assert(grid != null);
+                Debug.Assert(entities != null);
+                Debug.Assert(metadata.GridWidth * metadata.GridHeight == grid.Length);
+
+                mMetadata = metadata;
+                mGrid = grid;
+                mEntities = entities;
+
+#if DEBUG
+                Console.WriteLine("Loaded map {0} of type {1} written by {2}.",
+                    metadata.Name,
+                    metadata.Type,
+                    metadata.Author);
+#endif
+            }
+
+
+            public Metadata Metadata { get { return mMetadata; } }
+            public List<RawEntity> Entities { get { return mEntities; } }
+
+
+            public bool IsCellOpen(int x, int y)
+            {
+                // 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
+        {
+            Modal mData;
+
+            public Vector2 CenterCell;
+            Viewport mViewport;
+
+
+            public View(Modal data)
+            {
+                Debug.Assert(data != null);
+                mData = data;
+            }
+
+            public void Draw(SpriteBatch spriteBatch)
+            {
+                mViewport = spriteBatch.GraphicsDevice.Viewport;
+
+                // TODO: There is no culling yet, but it runs so fast that it probably won't ever need it.
+                for (int y = 0; y < mData.Metadata.GridHeight; y++)
+                {
+                    for (int x = 0; x < mData.Metadata.GridWidth; x++)
+                    {
+                        if (mData.IsCellOpen(x, y))
+                        {
+                            spriteBatch.Draw(Map.DefaultTile, GetRectangleFromCoordinates(x, y), Color.White);
+                        }
+                        else
+                        {
+                            spriteBatch.Draw(Map.DefaultTile, GetRectangleFromCoordinates(x, y), Color.DarkBlue);
+                        }
+                    }
+                }
+            }
+
+            /// <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>
+            Matrix GetTransformation(Vector2 center)
+            {
+                float halfRatio = PixelsToUnitSquares * 0.5f;
+                Matrix transform = Matrix.CreateTranslation(-center.X, -center.Y, 0.0f);
+                transform *= Matrix.CreateScale(PixelsToUnitSquares);
+                transform *= Matrix.CreateTranslation(mViewport.Width * 0.5f - halfRatio,
+                    mViewport.Height * 0.5f - halfRatio, 0.0f);
+
+                Vector2 topLeft = Vector2.Transform(new Vector2(0.0f, 0.0f), transform);
+                topLeft.X = Math.Max(mViewport.X, topLeft.X);
+                topLeft.Y = Math.Max(mViewport.Y, topLeft.Y);
+                transform *= Matrix.CreateTranslation(-topLeft.X, -topLeft.Y, 0.0f);
+
+                Vector2 bottomRight = Vector2.Transform(new Vector2((float)mData.Metadata.GridWidth,
+                    (float)mData.Metadata.GridHeight), transform);
+                float right = mViewport.X + mViewport.Width;
+                float bottom = mViewport.Y + mViewport.Height;
+                bottomRight.X = Math.Min(right, bottomRight.X) - right;
+                bottomRight.Y = Math.Min(bottom, bottomRight.Y) - bottom;
+                transform *= Matrix.CreateTranslation(-bottomRight.X, -bottomRight.Y, 0.0f);
+
+                return transform;
+            }
+
+
+            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);
+            }
         }
+
+        #endregion
+
+
+        #region Private Variables
+
+        Modal mData;
+        View mView;
+
+        #endregion
     }
 }