Dogcows Code - chaz/carfire/blob - CarFire/CarFire/CarFire/Game.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Linq;
   4 using System.Text;
   5 using Microsoft.Xna.Framework;
   6 using Microsoft.Xna.Framework.Content;
   7 using Microsoft.Xna.Framework.Graphics;
   8 using Microsoft.Xna.Framework.Input;
   9
  10 namespace CarFire
  11 {
  12     /// <summary>
  13     /// Container class for the whole state of the game.
  14     /// </summary>
  15     public class GameState
  16     {
  17         #region Public Properties
  18         private const int hitMonsterScore = 20;
  19         private const int killMonsterScore = 100;
  20         public int HitMonsterScore { get { return hitMonsterScore; } }
  21         public int KillMonsterScore { get { return killMonsterScore; } }
  22
  23         public long FrameNumber { get { return mFrameNumber; } }
  24
  25         public long Checksum { get { return mChecksum; } }
  26
  27         public int NumberOfPlayers { get { return mNumberOfPlayers; } }
  28
  29         public Map Map;
  30         public List<IEntity> Entities = new List<IEntity>();
  31         public List<Projectile> mProjectiles = new List<Projectile>();
  32         public Player[] mCharacters;
  33         public Display mDisplay;
  34         public AI AIData;
  35         #endregion
  36
  37
  38         #region Public Methods
  39
  40         /// <summary>
  41         /// Construct a game state container with the number of players.
  42         /// </summary>
  43         /// <param name="numPlayers">Number of players.</param>
  44         public GameState(int numPlayers)
  45         {
  46             mNumberOfPlayers = numPlayers;
  47             mFrameNumber = 0;
  48
  49             mCharacters = new Player[numPlayers];
  50
  51             mIsGameOver = new bool[numPlayers];
  52             mIsTerminated = new bool[numPlayers];
  53
  54             mMouseLocation = new Point[numPlayers];
  55             mMouseButton = new bool[numPlayers];
  56             mKeysDown = new List<Keys>[numPlayers];
  57             for (int i = 0; i < numPlayers; i++) mKeysDown[i] = new List<Keys>();
  58
  59             mKeypressCount = new int[numPlayers];
  60             mElapsedTime = 0;
  61             mChecksum = 0;
  62         }
  63
  64
  65         /// <summary>
  66         /// Should be called by the Game class to advance the state
  67         /// to the next frame.
  68         /// </summary>
  69         /// <param name="inputs">The inputs that occurred to be
  70         /// applied this coming frame.</param>
  71         /// <param name="milliseconds">Milliseconds; used for the checksum.</param>
  72         public void AdvanceFrame(NextInputs inputs, long milliseconds)
  73         {
  74             mFrameNumber++;
  75             mElapsedTime += milliseconds;
  76
  77             for (int player = 0; player < NumberOfPlayers; player++)
  78             {
  79                 if (inputs.IsMousePressedChanged[player])
  80                 {
  81                     mMouseButton[player] = inputs.MousePressed[player];
  82                 }
  83
  84                 if (inputs.IsMouseLocationChanged[player])
  85                 {
  86                     mMouseLocation[player] = inputs.MouseLocation[player];
  87                 }
  88
  89                 foreach (Keys k in inputs.KeysPressed[player])
  90                 {
  91                     if (!mKeysDown[player].Contains(k))
  92                     {
  93                         mKeysDown[player].Add(k);
  94                         mKeypressCount[player]++;
  95                     }
  96                 }
  97
  98                 foreach (Keys k in inputs.KeysReleased[player]) mKeysDown[player].Remove(k);
  99             }
 100
 101             ComputeChecksum();
 102         }
 103
 104
 105         /// <summary>
 106         /// Get the mouse location for a player.
 107         /// </summary>
 108         /// <param name="playerNum">Player Number.</param>
 109         /// <returns>Mouse location.</returns>
 110         public Point GetMouseLocation(int playerNum)
 111         {
 112             return mMouseLocation[playerNum];
 113         }
 114
 115         /// <summary>
 116         /// Get the mouse button state for a player.
 117         /// </summary>
 118         /// <param name="playerNum">Player number.</param>
 119         /// <returns>Mouse button state..</returns>
 120         public bool GetMouseButton(int playerNum)
 121         {
 122             return mMouseButton[playerNum];
 123         }
 124
 125         /// <summary>
 126         /// Get the keyboard state for a player.
 127         /// </summary>
 128         /// <param name="playerNum">Player number.</param>
 129         /// <returns>Keyboard state.</returns>
 130         public List<Keys> GetKeysDown(int playerNum)
 131         {
 132             return mKeysDown[playerNum];
 133         }
 134
 135         #endregion
 136
 137
 138         #region Private Methods
 139
 140         // Calculates a checksum for debugging network synchronization issues.
 141         long ComputeChecksum()
 142         {
 143             mChecksum += FrameNumber;
 144             for (int i = 0; i < NumberOfPlayers; i++)
 145             {
 146                 mChecksum = mChecksum + mKeypressCount[i];
 147                 mChecksum = mChecksum * 3 + (mIsGameOver[i] ? 1 : 2);
 148                 mChecksum = mChecksum * 3 + (mIsTerminated[i] ? 1 : 2);
 149                 foreach (Keys k in mKeysDown[i])
 150                     mChecksum = mChecksum * 257 + (int)k;
 151                 mChecksum = mChecksum * 25789 + mMouseLocation[i].X * 259 + mMouseLocation[i].Y + 375;
 152                 mChecksum = mChecksum * 3 + (mMouseButton[i] ? 1 : 2);
 153
 154             }
 155             mChecksum += mElapsedTime;
 156
 157             return mChecksum;
 158         }
 159
 160         #endregion
 161
 162
 163         #region Private Variables
 164
 165         int mNumberOfPlayers;
 166         public Point[] mMouseLocation;
 167         public bool[] mMouseButton;
 168         public List<Keys>[] mKeysDown;
 169
 170         long mFrameNumber;
 171
 172         bool[] mIsGameOver;
 173         bool[] mIsTerminated;
 174
 175         int[] mKeypressCount;
 176         long mElapsedTime;
 177         long mChecksum;
 178
 179         #endregion
 180     }
 181
 182     /// <summary>
 183     /// Container class for all the inputs for a single frame.
 184     /// </summary>
 185     public class NextInputs
 186     {
 187         public List<Keys>[] KeysPressed;
 188         public List<Keys>[] KeysReleased;
 189         public Point[] MouseLocation;
 190         public bool[] IsMouseLocationChanged;
 191         public bool[] MousePressed;
 192         public bool[] IsMousePressedChanged;
 193
 194         public NextInputs(int numPlayers)
 195         {
 196             KeysPressed = new List<Keys>[numPlayers];
 197             KeysReleased = new List<Keys>[numPlayers];
 198             IsMouseLocationChanged = new bool[numPlayers];
 199             MousePressed = new bool[numPlayers];
 200             IsMousePressedChanged = new bool[numPlayers];
 201             for (int i = 0; i < numPlayers; i++) KeysPressed[i] = new List<Keys>();
 202             for (int i = 0; i < numPlayers; i++) KeysReleased[i] = new List<Keys>();
 203         }
 204     }
 205
 206
 207     /// <summary>
 208     /// The big kahuna.
 209     /// </summary>
 210     public class Game : IDeterministicGame
 211     {
 212         #region Public Properties
 213
 214         /// <summary>
 215         /// Get the content manager associated with this game.
 216         /// </summary>
 217         public ContentManager ContentManager { get { return mContentManager; } }
 218
 219         /// <summary>
 220         /// Get the state.
 221         /// </summary>
 222         public GameState State;
 223
 224         public bool[,] Grid
 225         {
 226             get
 227             {
 228                 bool[,] grid = State.Map.Grid;
 229                 foreach (IEntity entity in State.Entities)
 230                 {
 231                     Point coordinates = entity.Coordinates;
 232                     if (State.Map.IsCellOpen(coordinates)) grid[coordinates.X, coordinates.Y] = false;
 233                 }
 234                 return grid;
 235             }
 236         }
 237
 238         #endregion
 239
 240
 241         #region Public Methods
 242
 243         public IEntity GetEntityAtCoordinates(Point point)
 244         {
 245             foreach (IEntity entity in State.Entities)
 246             {
 247                 if (entity.Coordinates == point) return entity;
 248             }
 249             return null;
 250         }
 251
 252         public Player GetPlayerAtCoordinates(Point point)
 253         {
 254             foreach (Player player in State.mCharacters)
 255             {
 256                 if (player != null && player.Coordinates == point) return player;
 257             }
 258             return null;
 259         }
 260
 261         public bool IsCellOpen(Point point)
 262         {
 263             if (!State.Map.IsCellOpen(point)) return false;
 264             if (GetEntityAtCoordinates(point) != null) return false;
 265             return true;
 266         }
 267
 268         public Game()
 269         {
 270
 271         }
 272         /// <summary>
 273         /// This method should be called whenever the players want to move to a new map.
 274         /// Not implemented yet.  Need some way to get next map.
 275         /// </summary>
 276         public void startNewMap()
 277         {
 278             //TODO somehow get next map
 279             State.Entities.Clear();
 280             //State.Map = State.Map.getNextMap();
 281             for (int i = 0; i < State.mCharacters.Length; i++)
 282             {
 283                 State.mCharacters[i].Coordinates = State.Map.GetStartingPositionForPlayer(i + 1);
 284             }
 285             State.Entities = State.Map.GetAllEntities(this);
 286         }
 287         public void LoadContent(ContentManager contentManager)
 288         {
 289             mContentManager = contentManager;
 290             menu = mContentManager.Load<SpriteFont>("menuFont");
 291
 292         }
 293
 294         public void UnloadContent()
 295         {
 296         }
 297
 298         private int GetPlayerNumber(Object playerIdentifier)
 299         {
 300             for (int i = 0; i < mPlayerIdentifiers.Length; i++)
 301             {
 302                 if (mPlayerIdentifiers[i] == playerIdentifier) return i;
 303             }
 304             throw new Exception("Illegal player identifier" + playerIdentifier);
 305         }
 306
 307         public Vector2 PreferredScreenSize
 308         {
 309             get { return new Vector2(800, 600); }
 310         }
 311
 312         public int MinimumSupportedPlayers
 313         {
 314             get { return 1; }
 315         }
 316
 317         public int MaximumSupportedPlayers
 318         {
 319             get { return 4; }
 320         }
 321
 322         public void ResetGame(object[] playerIdentifiers, object thisPlayer)
 323         {
 324             int numPlayers = playerIdentifiers.Count();
 325
 326             mPlayerIdentifiers = new object[numPlayers];
 327             for (int i = 0; i < numPlayers; i++) mPlayerIdentifiers[i] = playerIdentifiers[i];
 328
 329             mThisPlayerID = GetPlayerNumber(thisPlayer);
 330
 331             State = new GameState(numPlayers);
 332             mInputs = new NextInputs(numPlayers);
 333             State.mDisplay = new Display(this);
 334             State.mDisplay.LoadContent(mContentManager);
 335
 336             // Load the tilemap.
 337             Texture2D mapTiles = mContentManager.Load<Texture2D>("graphics/wallAndFloorTilesNoEdgeScale");
 338             Tilemap tilemap = new Tilemap(mapTiles, 10, 7);
 339             tilemap.SetTile(' ', new Point(4, 5), TileFlags.Default);
 340             tilemap.SetTile('`', new Point(0, 1), TileFlags.Closed | TileFlags.Wall);
 341             tilemap.SetTile('~', new Point(1, 1), TileFlags.Closed | TileFlags.Wall);
 342             tilemap.SetTile('!', new Point(3, 1), TileFlags.Closed | TileFlags.Wall);
 343             tilemap.SetTile('@', new Point(4, 1), TileFlags.Closed | TileFlags.Wall);
 344             tilemap.SetTile('#', new Point(5, 1), TileFlags.Closed | TileFlags.Wall);
 345             tilemap.SetTile('$', new Point(6, 1), TileFlags.Closed | TileFlags.Wall);
 346             tilemap.SetTile('%', new Point(8, 1), TileFlags.Closed | TileFlags.Wall);
 347             tilemap.SetTile('^', new Point(9, 1), TileFlags.Closed | TileFlags.Wall);
 348             tilemap.SetTile('&', new Point(0, 2), TileFlags.Closed | TileFlags.Wall);
 349             tilemap.SetTile('=', new Point(1, 2), TileFlags.Closed | TileFlags.Wall);
 350             tilemap.SetTile('*', new Point(2, 2), TileFlags.Closed | TileFlags.Wall);
 351             tilemap.SetTile('(', new Point(4, 2), TileFlags.Closed | TileFlags.Wall);
 352             tilemap.SetTile(')', new Point(0, 3), TileFlags.Closed | TileFlags.Wall);
 353             tilemap.SetTile('_', new Point(2, 3), TileFlags.Closed | TileFlags.Wall);
 354             tilemap.SetTile('-', new Point(9, 3), TileFlags.Closed | TileFlags.Wall);
 355             tilemap.SetTile(',', new Point(1, 4), TileFlags.Default);
 356             tilemap.SetTile('+', new Point(2, 4), TileFlags.Default);
 357             tilemap.SetTile('[', new Point(3, 4), TileFlags.Default);
 358             tilemap.SetTile(']', new Point(4, 4), TileFlags.Default);
 359             tilemap.SetTile('{', new Point(5, 4), TileFlags.Default);
 360             tilemap.SetTile('}', new Point(6, 4), TileFlags.Default);
 361             tilemap.SetTile('\\', new Point(8, 4), TileFlags.Default);
 362             tilemap.SetTile('|', new Point(9, 4), TileFlags.Default);
 363             tilemap.SetTile(';', new Point(0, 5), TileFlags.Default);
 364             tilemap.SetTile(':', new Point(1, 5), TileFlags.Default);
 365             tilemap.SetTile('\'', new Point(2, 5), TileFlags.Default);
 366             tilemap.SetTile('"', new Point(3, 5), TileFlags.Default);
 367             tilemap.SetTile('.', new Point(5, 5), TileFlags.Default);
 368             tilemap.SetTile('<', new Point(6, 5), TileFlags.Default);
 369             tilemap.SetTile('>', new Point(7, 5), TileFlags.Default);
 370             tilemap.SetTile('/', new Point(8, 5), TileFlags.Default);
 371             tilemap.SetTile('?', new Point(9, 5), TileFlags.Default);
 372             Map.Tilemap = tilemap;
 373
 374             // Load the first map.
 375             State.Map = mContentManager.Load<Map>("Maps/level1");
 376             State.Entities = State.Map.GetAllEntities(this);
 377
 378             //State.AIData = new AI(this);
 379
 380             /*
 381             mPlayers.Clear();
 382             for (int i = 0; i < PlayerIdentifiers.Length; i++)
 383             {
 384                 Human player = new Human(mMap, "");
 385                 mPlayers.Add(player);
 386                 mDisplay.AddCharacters(player);
 387                 mPlayers.Add(player);
 388                 mDisplay.AddCharacters(player);
 389             }
 390             this.playerIdentifiers = PlayerIdentifiers;
 391             for (int i = 0; i < mPlayers.Count; i++)
 392             {
 393                 Point starting = mMap.GetStartingPositionForPlayer(i + 1);
 394                 mPlayers[i].Spawn(new Vector2(starting.X, starting.Y));
 395             }
 396             */
 397         }
 398
 399         public long CurrentFrameNumber
 400         {
 401             get { return State.FrameNumber; }
 402         }
 403
 404         public long CurrentChecksum
 405         {
 406             get { return 0; }
 407         }
 408
 409         public void ApplyKeyInput(object playerIdentifier, Keys key, bool isKeyPressed)
 410         {
 411             //code from Prof Jensen's TestHarness
 412             int player = GetPlayerNumber(playerIdentifier);
 413
 414             if (isKeyPressed && !mInputs.KeysPressed[player].Contains(key))
 415                 mInputs.KeysPressed[player].Add(key);
 416
 417             if (!isKeyPressed && !mInputs.KeysReleased[player].Contains(key))
 418                 mInputs.KeysReleased[player].Add(key);
 419
 420         }
 421
 422         public void ApplyMouseLocationInput(object playerIdentifier, int x, int y)
 423         {
 424
 425         }
 426
 427         public void ApplyMouseButtonInput(object playerIdentifier, bool isButtonPressed)
 428         {
 429
 430         }
 431
 432         public bool IsGameOver(object playerIdentifier)
 433         {
 434             return false;
 435         }
 436
 437         public bool IsTerminated(object playerIdentifier)
 438         {
 439             return false;
 440         }
 441
 442         public long Update(TimeSpan elapsedTime)
 443         {
 444             State.AdvanceFrame(mInputs, elapsedTime.Milliseconds);  // Apply the inputs, advance game state.
 445             State.mDisplay.Update(elapsedTime, mThisPlayerID);
 446             State.Entities.ForEach(delegate(IEntity e) { e.Update(elapsedTime); });
 447             mInputs = new NextInputs(State.NumberOfPlayers);  // Start with inputs cleared on the next frame.
 448             //mDisplay.Update(elapsedTime);
 449             return State.FrameNumber;
 450
 451         }
 452
 453         public long Draw(SpriteBatch spriteBatch)
 454         {
 455             bool allCharactersSelected = true;
 456             for (int i = 0; i < State.NumberOfPlayers; i++)
 457             {
 458                 //If player has not selected a player yet let them select one.
 459                 if (State.mCharacters[i] == null)
 460                 {
 461                     allCharactersSelected = false;
 462                     if (State.GetKeysDown(i).Contains(Keys.M))
 463                     {
 464                         State.mCharacters[i] = new Melee(this, "", State.Map.GetStartingPositionForPlayer(i + 1), i);
 465                         State.mCharacters[i].LoadContent(mContentManager);
 466                     }
 467                     else if (State.GetKeysDown(i).Contains(Keys.R))
 468                     {
 469                         State.mCharacters[i] = new Ranged(this, "", State.Map.GetStartingPositionForPlayer(i + 1), i);
 470                         State.mCharacters[i].LoadContent(mContentManager);
 471                     }
 472                 }
 473             }
 474             if (allCharactersSelected)
 475             {
 476
 477                 State.mDisplay.Draw(spriteBatch);
 478             }
 479             else
 480             {
 481                 spriteBatch.GraphicsDevice.Clear(Color.Black);
 482                 spriteBatch.DrawString(menu, "Press R to select a Ranged Character and M to select a Melee Character", new Vector2(30, 30), Color.RosyBrown);
 483             }
 484             return CurrentFrameNumber;
 485         }
 486
 487         #endregion
 488
 489
 490         #region Private Variables
 491
 492         SpriteFont menu;
 493
 494         ContentManager mContentManager;
 495         NextInputs mInputs;
 496
 497         Object[] mPlayerIdentifiers;
 498         int mThisPlayerID;
 499
 500         #endregion
 501     }
 502 }