X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fcarfire;a=blobdiff_plain;f=CarFire%2FCarFire%2FCarFire%2FMap.cs;fp=CarFire%2FCarFire%2FCarFire%2FMap.cs;h=b61f2bbcb1eef2f8e0e556efdcff645b3daf5d63;hp=ed8c39fd1957986f0014a404d44c702ed982bfe3;hb=1393586d1e5639ac8f1e9fc8183644050dd54165;hpb=2eb9216eac3321adc2f897068396e7fb1f126089

diff --git a/CarFire/CarFire/CarFire/Map.cs b/CarFire/CarFire/CarFire/Map.cs
index ed8c39f..b61f2bb 100644
--- a/CarFire/CarFire/CarFire/Map.cs
+++ b/CarFire/CarFire/CarFire/Map.cs
@@ -2,11 +2,11 @@
 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;
 
 namespace CarFire
 {
@@ -18,20 +18,21 @@ namespace CarFire
     /// </summary>
     public class Map
     {
-        #region Types
+        // DEBUG: Tilesets not implemented at all.
+        public static Texture2D DefaultTile;
 
-        public class Data
-        {
-            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;
-        }
-        
+        #region Public Constants
+
+        public const float PixelsToUnitSquares = 64.0f;
+
+        #endregion
+
+
+        #region Public Types
+
+        /// <summary>
+        /// The type of a map helps determine how the map is intended to be used.
+        /// </summary>
         public enum Type
         {
             None,
@@ -39,12 +40,301 @@ namespace CarFire
             Battle
         }
 
+        /// <summary>
+        /// The container class for map metadata.
+        /// </summary>
+        public class Metadata
+        {
+            public string Name;
+            public Type Type;
+            public string Author;
+            public HashSet<int> NumPlayers = new HashSet<int>();
+            public string Tileset;
+            public int GridWidth;
+            public int GridHeight;
+        }
+
+        #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 Type Type { get { return mData.mMetadata.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; } }
+
+
+        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="data">Map data.</param>
+        public Map(Metadata metadata, char[,] grid, Dictionary<char, Dictionary<string, string>> 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="x">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 the entities loaded from the map file.
+        /// </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()
+        {
+            return mData.Entities;
+        }
+
         #endregion
 
 
-        public Map(Data data)
+        #region Private Types
+
+        class Modal
+        {
+            Metadata mMetadata;
+            char[,] mGrid;
+            Dictionary<char, Dictionary<string, string>> mEntities;
+
+            public Modal(Metadata metadata, char[,] grid, Dictionary<char, Dictionary<string, string>> 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 Dictionary<char, Dictionary<string, string>> 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] == ' ';
+            }
+        }
+
+        class View
         {
-            Console.WriteLine("Read map " + data.Name + " of type " + data.Type + " written by " + data.Author);
+            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
     }
 }