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             IEntity entity = GetEntityAtCoordinates(point);
 265             if (entity != null && entity.IsCollidable) return false;
 266             return true;
 267         }
 268
 269         public Game()
 270         {
 271
 272         }
 273         /// <summary>
 274         /// This method should be called whenever the players want to move to a new map.
 275         /// Not implemented yet.  Need some way to get next map.
 276         /// </summary>
 277         public void startNewMap()
 278         {
 279             //TODO somehow get next map
 280             State.Entities.Clear();
 281             //State.Map = State.Map.getNextMap();
 282             for (int i = 0; i < State.mCharacters.Length; i++)
 283             {
 284                 State.mCharacters[i].Coordinates = State.Map.GetStartingPositionForPlayer(i + 1);
 285             }
 286             State.Entities = State.Map.GetAllEntities(this);
 287         }
 288         public void LoadContent(ContentManager contentManager)
 289         {
 290             mContentManager = contentManager;
 291             menu = mContentManager.Load<SpriteFont>("menuFont");
 292
 293         }
 294
 295         public void UnloadContent()
 296         {
 297         }
 298
 299         private int GetPlayerNumber(Object playerIdentifier)
 300         {
 301             for (int i = 0; i < mPlayerIdentifiers.Length; i++)
 302             {
 303                 if (mPlayerIdentifiers[i] == playerIdentifier) return i;
 304             }
 305             throw new Exception("Illegal player identifier" + playerIdentifier);
 306         }
 307
 308         public Vector2 PreferredScreenSize
 309         {
 310             get { return new Vector2(800, 600); }
 311         }
 312
 313         public int MinimumSupportedPlayers
 314         {
 315             get { return 1; }
 316         }
 317
 318         public int MaximumSupportedPlayers
 319         {
 320             get { return 4; }
 321         }
 322
 323         public void ResetGame(object[] playerIdentifiers, object thisPlayer)
 324         {
 325             int numPlayers = playerIdentifiers.Count();
 326
 327             mPlayerIdentifiers = new object[numPlayers];
 328             for (int i = 0; i < numPlayers; i++) mPlayerIdentifiers[i] = playerIdentifiers[i];
 329
 330             mThisPlayerID = GetPlayerNumber(thisPlayer);
 331
 332             State = new GameState(numPlayers);
 333             mInputs = new NextInputs(numPlayers);
 334             State.mDisplay = new Display(this);
 335             State.mDisplay.LoadContent(mContentManager);
 336
 337             // Load the tilemap.
 338             Texture2D mapTiles = mContentManager.Load<Texture2D>("graphics/wallAndFloorTilesNoEdgeScale");
 339             Tilemap tilemap = new Tilemap(mapTiles, 10, 7);
 340             tilemap.SetTile(' ', new Point(4, 5), TileFlags.Default);
 341             tilemap.SetTile('`', new Point(0, 1), TileFlags.Closed | TileFlags.Wall);
 342             tilemap.SetTile('~', new Point(1, 1), TileFlags.Closed | TileFlags.Wall);
 343             tilemap.SetTile('!', new Point(3, 1), TileFlags.Closed | TileFlags.Wall);
 344             tilemap.SetTile('@', new Point(4, 1), TileFlags.Closed | TileFlags.Wall);
 345             tilemap.SetTile('#', new Point(5, 1), TileFlags.Closed | TileFlags.Wall);
 346             tilemap.SetTile('$', new Point(6, 1), TileFlags.Closed | TileFlags.Wall);
 347             tilemap.SetTile('%', new Point(8, 1), TileFlags.Closed | TileFlags.Wall);
 348             tilemap.SetTile('^', new Point(9, 1), TileFlags.Closed | TileFlags.Wall);
 349             tilemap.SetTile('&', new Point(0, 2), TileFlags.Closed | TileFlags.Wall);
 350             tilemap.SetTile('=', new Point(1, 2), TileFlags.Closed | TileFlags.Wall);
 351             tilemap.SetTile('*', new Point(2, 2), TileFlags.Closed | TileFlags.Wall);
 352             tilemap.SetTile('(', new Point(4, 2), TileFlags.Closed | TileFlags.Wall);
 353             tilemap.SetTile(')', new Point(0, 3), TileFlags.Closed | TileFlags.Wall);
 354             tilemap.SetTile('_', new Point(2, 3), TileFlags.Closed | TileFlags.Wall);
 355             tilemap.SetTile('-', new Point(9, 3), TileFlags.Closed | TileFlags.Wall);
 356             tilemap.SetTile(',', new Point(1, 4), TileFlags.Default);
 357             tilemap.SetTile('+', new Point(2, 4), TileFlags.Default);
 358             tilemap.SetTile('[', new Point(3, 4), TileFlags.Default);
 359             tilemap.SetTile(']', new Point(4, 4), TileFlags.Default);
 360             tilemap.SetTile('{', new Point(5, 4), TileFlags.Default);
 361             tilemap.SetTile('}', new Point(6, 4), TileFlags.Default);
 362             tilemap.SetTile('\\', new Point(8, 4), TileFlags.Default);
 363             tilemap.SetTile('|', new Point(9, 4), TileFlags.Default);
 364             tilemap.SetTile(';', new Point(0, 5), TileFlags.Default);
 365             tilemap.SetTile(':', new Point(1, 5), TileFlags.Default);
 366             tilemap.SetTile('\'', new Point(2, 5), TileFlags.Default);
 367             tilemap.SetTile('"', new Point(3, 5), TileFlags.Default);
 368             tilemap.SetTile('.', new Point(5, 5), TileFlags.Default);
 369             tilemap.SetTile('<', new Point(6, 5), TileFlags.Default);
 370             tilemap.SetTile('>', new Point(7, 5), TileFlags.Default);
 371             tilemap.SetTile('/', new Point(8, 5), TileFlags.Default);
 372             tilemap.SetTile('?', new Point(9, 5), TileFlags.Default);
 373             Map.Tilemap = tilemap;
 374
 375             // Load the first map.
 376             State.Map = mContentManager.Load<Map>("Maps/level1");
 377             State.Entities = State.Map.GetAllEntities(this);
 378
 379             //State.AIData = new AI(this);
 380
 381             /*
 382             mPlayers.Clear();
 383             for (int i = 0; i < PlayerIdentifiers.Length; i++)
 384             {
 385                 Human player = new Human(mMap, "");
 386                 mPlayers.Add(player);
 387                 mDisplay.AddCharacters(player);
 388                 mPlayers.Add(player);
 389                 mDisplay.AddCharacters(player);
 390             }
 391             this.playerIdentifiers = PlayerIdentifiers;
 392             for (int i = 0; i < mPlayers.Count; i++)
 393             {
 394                 Point starting = mMap.GetStartingPositionForPlayer(i + 1);
 395                 mPlayers[i].Spawn(new Vector2(starting.X, starting.Y));
 396             }
 397             */
 398         }
 399
 400         public long CurrentFrameNumber
 401         {
 402             get { return State.FrameNumber; }
 403         }
 404
 405         public long CurrentChecksum
 406         {
 407             get { return 0; }
 408         }
 409
 410         public void ApplyKeyInput(object playerIdentifier, Keys key, bool isKeyPressed)
 411         {
 412             //code from Prof Jensen's TestHarness
 413             int player = GetPlayerNumber(playerIdentifier);
 414
 415             if (isKeyPressed && !mInputs.KeysPressed[player].Contains(key))
 416                 mInputs.KeysPressed[player].Add(key);
 417
 418             if (!isKeyPressed && !mInputs.KeysReleased[player].Contains(key))
 419                 mInputs.KeysReleased[player].Add(key);
 420
 421         }
 422
 423         public void ApplyMouseLocationInput(object playerIdentifier, int x, int y)
 424         {
 425
 426         }
 427
 428         public void ApplyMouseButtonInput(object playerIdentifier, bool isButtonPressed)
 429         {
 430
 431         }
 432
 433         public bool IsGameOver(object playerIdentifier)
 434         {
 435             return false;
 436         }
 437
 438         public bool IsTerminated(object playerIdentifier)
 439         {
 440             return false;
 441         }
 442
 443         public long Update(TimeSpan elapsedTime)
 444         {
 445             State.AdvanceFrame(mInputs, elapsedTime.Milliseconds);  // Apply the inputs, advance game state.
 446             State.mDisplay.Update(elapsedTime, mThisPlayerID);
 447             State.Entities.ForEach(delegate(IEntity e) { e.Update(elapsedTime); });
 448             mInputs = new NextInputs(State.NumberOfPlayers);  // Start with inputs cleared on the next frame.
 449             //mDisplay.Update(elapsedTime);
 450             return State.FrameNumber;
 451
 452         }
 453
 454         public long Draw(SpriteBatch spriteBatch)
 455         {
 456             bool allCharactersSelected = true;
 457             for (int i = 0; i < State.NumberOfPlayers; i++)
 458             {
 459                 //If player has not selected a player yet let them select one.
 460                 if (State.mCharacters[i] == null)
 461                 {
 462                     allCharactersSelected = false;
 463                     if (State.GetKeysDown(i).Contains(Keys.M))
 464                     {
 465                         State.mCharacters[i] = new Melee(this, "", State.Map.GetStartingPositionForPlayer(i + 1), i);
 466                         State.mCharacters[i].LoadContent(mContentManager);
 467                     }
 468                     else if (State.GetKeysDown(i).Contains(Keys.R))
 469                     {
 470                         State.mCharacters[i] = new Ranged(this, "", State.Map.GetStartingPositionForPlayer(i + 1), i);
 471                         State.mCharacters[i].LoadContent(mContentManager);
 472                     }
 473                 }
 474             }
 475             if (allCharactersSelected)
 476             {
 477
 478                 State.mDisplay.Draw(spriteBatch);
 479             }
 480             else
 481             {
 482                 spriteBatch.GraphicsDevice.Clear(Color.Black);
 483                 spriteBatch.DrawString(menu, "Press R to select a Ranged Character and M to select a Melee Character", new Vector2(30, 30), Color.RosyBrown);
 484             }
 485             return CurrentFrameNumber;
 486         }
 487
 488         #endregion
 489
 490
 491         #region Private Variables
 492
 493         SpriteFont menu;
 494
 495         ContentManager mContentManager;
 496         NextInputs mInputs;
 497
 498         Object[] mPlayerIdentifiers;
 499         int mThisPlayerID;
 500
 501         #endregion
 502     }
 503 }