public Cell findPath(Game2 game)
{
lowestTimeCostToCoinPile = 1000;
lowestTimeCostToLifePack = 1000;
String[,] board = game.board;
var grid = new Grid(10, 10);
// set the obstacles to the Grid from the game
for (int i = 0; i < 10; i++)
{
for (int j = 0; j < 10; j++)
{
// set bricks
if (board[i, j] == "B")
{
grid.brickWalls.Add(new Cell(j, i));
}
// set stones
else if (board[i, j] == "S")
{
grid.stone.Add(new Cell(j, i));
}
// set water
else if (board[i, j] == "W")
{
grid.water.Add(new Cell(j, i));
}
}
}
var gridWithoutWater = new Grid(10, 10);
// set the obstacles to the Grid from the game without water
for (int i = 0; i < 10; i++)
{
for (int j = 0; j < 10; j++)
{
// set bricks
if (board[i, j] == "B")
{
gridWithoutWater.brickWalls.Add(new Cell(j, i));
}
// set stones
else if (board[i, j] == "S")
{
gridWithoutWater.stone.Add(new Cell(j, i));
}
}
}
//remove coin piles that have been accuired by other players.
foreach (var p in game.player)
{
if (p.health == 0) { continue; } //ignore enemy who has just died!!! :v
if (p.playerNumber == game.myPlayerNumber) { continue; } // ignore me
foreach (var c in game.Coin)
{
// catch whether another player is on a coin pile
if (p.playerLocationX == c.locationX && p.playerLocationY == c.locationY)
{
game.Coin.Remove(c);
break;
}
}
}
//remove life packs that have been accuired by other players.
foreach (var p in game.player)
{
if (p.playerNumber == game.myPlayerNumber) { continue; } // ignore me
foreach (var life in game.Lifepacket)
{
// catch whether another player is on a lifepacket
if (p.playerLocationX == life.locationX && p.playerLocationY == life.locationY)
{
game.Lifepacket.Remove(life);
break;
}
}
}
// get my Player's current position
foreach (var p in game.player)
{
if (p.playerNumber == game.myPlayerNumber)
{
game.me = p;
}
}
var start = new Cell(game.me.playerLocationX, game.me.playerLocationY);
//Console.WriteLine("my current location is "+ game.me.playerLocationX + game.me.playerLocationY);
//#################### Begins the Procedure to Get the proper goal to follow. #####################################
/* tips...
value of the coin, lifetime, whether an enemy is also targetting the coin - if he can get it soon,....
if my health is low, high priority to health pack
*/
/* STEPS
1. apply A* for every pack on the board - store each path (stacks), time cost to goal (in s)
2. for each goal, time to goal > life time of goal ? ignore;
(3) pro step - if enemy is goalting this and he can reach it before me ? ignore; ( this will be implemented at the final stage of the development)
(4) now I have reachable goals. if my health is low? lifepack: coin
5. if coin: select the most valuable coin -- to be implemented!!!
6. now you have a precise goal !
/* TO DO
go to the most valuable coin pile from the reachable coinPile list
*/
// ######### Enemy search ###############
for (int i = 0; i < game.totalPlayers; i++)
{
var enemy = game.player[i];
if (enemy.health == 0) { continue; } // ignore dead players
// TO DO :- if enemy die, remove it and gain coin pile (spoil).
// Console.WriteLine("Total number of players " + game.totalPlayers);
// Console.WriteLine("Enemy Number " + enemy.playerNumber + " my Num " + game.myPlayerNumber);
if (enemy.playerNumber == game.myPlayerNumber)
{
// Console.WriteLine("In the if,,..Enemy Number " + enemy.playerNumber + " my Num " +game.myPlayerNumber);
continue;
}
Cell goal = new Cell(enemy.playerLocationX, enemy.playerLocationY);
// Console.WriteLine(game.myPlayerNumber+" Enemy Loc "+ goal.x + ","+ goal.y + "Enemy NO " + enemy.playerNumber + " -----------------------------------------------------");
var pathFinder = new PathFinder(gridWithoutWater, start, goal);
//if the enemy is straight to me ( Now I have a life threat )
if (FilterStraightPath(start, goal, pathFinder.cameFrom))
{
game.enemyPresents = true;
if (path.Count != 0)
{
Cell nextCell = path.Pop();
path.Clear();
return nextCell;
}
}
}
// ######### Life Packs search ##########
foreach (var lifePack in game.Lifepacket)
{
// Console.WriteLine("lowestTimeCost= " + lowestTimeCostToLifePack + " timeCostToTarget= " + timeCostToTarget + " lifeTime" + lifePack.lifeTime);
Cell goal = new Cell(lifePack.locationX, lifePack.locationY);
if (start.x == goal.x && start.y == goal.y) // otherwise pathfinder will break
{
// Console.WriteLine("Life Pack Accuired!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
accuiredLifePacket = lifePack;
continue;
}
var pathFinder = new PathFinder(grid, start, goal);
BuildPath(start, goal, pathFinder.cameFrom);
// filter the reachable life packs in time
if (timeCostToTarget <= lifePack.lifeTime && timeCostToTarget < lowestTimeCostToLifePack) // < or <=
{
// Console.WriteLine("New lowest time cost = " + timeCostToTarget);
lowestTimeCostToLifePack = timeCostToTarget;
// keep the backup of the nearest path sequence for now
if (path.Count != 0)
{
pathToNearestLifePack = new Stack<Cell>(path.Reverse());
}
}
}
if (game.Lifepacket.Count != 0)
{
// Console.WriteLine("Life Pack removed!");
game.Lifepacket.Remove(accuiredLifePacket);
}
// ######### Coin Piles search ##########
foreach (var coinPile in game.Coin)
{
// Console.WriteLine("lowestTimeCost= " + lowestTimeCostToCoinPile + " timeCostToTarget= " + timeCostToTarget + " lifeTime" + coinPile.lifeTime);
Cell goal = new Cell(coinPile.locationX, coinPile.locationY);
if (start.x == goal.x && start.y == goal.y) // otherwise pathfinder will break
{
// Console.WriteLine("Coin Accuired!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
accuiredCoin = coinPile;
continue;
}
var pathFinder = new PathFinder(grid, start, goal);
BuildPath(start, goal, pathFinder.cameFrom);
// filter the reachable coins in time
if (timeCostToTarget <= coinPile.lifeTime && timeCostToTarget <= lowestTimeCostToCoinPile) // < or <=
{
// Console.WriteLine("New lowest time cost = " + timeCostToTarget);
lowestTimeCostToCoinPile = timeCostToTarget;
// keep the backup of the nearestpath sequence for now
if (path.Count != 0)
{
pathToNearestCoinPile = new Stack<Cell>(path.Reverse());
}
}
}
if (game.Coin.Count != 0)
{
// Console.WriteLine("Coin removed!");
game.Coin.Remove(accuiredCoin);
}
// ####### take decission to go to the Life pack or the Coin pile
/*
if (game.me.health < 100 )
{
Console.WriteLine("my health is low");
if (pathToNearestLifePack.Count != 0)
{
//get the next cell address to move
var nextCell = pathToNearestLifePack.Pop();
// clear stacks
pathToNearestLifePack.Clear();
path.Clear();
return nextCell;
}
}*/
if (lowestTimeCostToCoinPile < lowestTimeCostToLifePack)
{
if (pathToNearestCoinPile.Count != 0)
{
//get the next cell address to move
var nextCell = pathToNearestCoinPile.Pop();
// clear stacks
pathToNearestCoinPile.Clear();
path.Clear();
return nextCell;
}
else
{
// if there aren't any coins on the board
path.Clear();
return start;
}
}
if (pathToNearestLifePack.Count != 0)
{
//get the next cell address to move
var nextCell = pathToNearestLifePack.Pop();
// clear stacks
pathToNearestLifePack.Clear();
path.Clear();
return nextCell;
}
else
{
// if there aren't any life packs on the board
path.Clear();
return start;
}
}
/// <summary>
/// Parse the server message of life packets appearences
/// </summary>
/// <param name="text"></param>
/// <returns></returns>
public int lifePacks(String text)
{
text = text.Remove(text.Length - 1); //remove #
text = text.Remove(0, 2); // remove L and :
string[] tokens = text.Split(':');
lifePacket LifePacket = new lifePacket(int.Parse(tokens[0].Substring(0, 1)), int.Parse(tokens[0].Substring(2, 1)), int.Parse(tokens[1]) / (1000), game.gameClock);
// Console.WriteLine("***LifePacket*** life time = " + LifePacket.lifeTime + " X,Y " + LifePacket.locationX + "," + LifePacket.locationY);
game.Lifepacket.Add(LifePacket);
return 0;
}