From 07e292a5e1cced182274a92d096ae5fd1a408a3d Mon Sep 17 00:00:00 2001
From: joachimschmidt557 <joachim.schmidt557@outlook.com>
Date: Fri, 22 Mar 2019 15:11:56 +0100
Subject: [PATCH] WIP CaptureTheFlag

---
 .../src/game/goals/CaptureTheFlagGoal.java    | 92 +++++++++++++++++--
 1 file changed, 84 insertions(+), 8 deletions(-)

diff --git a/Projektgruppe_175/src/game/goals/CaptureTheFlagGoal.java b/Projektgruppe_175/src/game/goals/CaptureTheFlagGoal.java
index c2f63bd..63a21ed 100644
--- a/Projektgruppe_175/src/game/goals/CaptureTheFlagGoal.java
+++ b/Projektgruppe_175/src/game/goals/CaptureTheFlagGoal.java
@@ -1,6 +1,9 @@
 package game.goals;
 
+import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Collectors;
+import java.util.Random;
 
 import game.Game;
 import game.Goal;
@@ -9,13 +12,20 @@ import game.map.Castle;
 
 public class CaptureTheFlagGoal extends Goal {
 
-	final int ROUND_FOR_DISTRIBUTION = 2;
-	final int MIN_ROUND_FOR_WIN = 2;
+	final static int ROUND_FOR_DISTRIBUTION = 2;
+	final static int MIN_ROUND_FOR_WIN = 2;
+	final static int NUM_FLAG_CASTLES = 4;
 	
 	List<Castle> flagCastles;
 	
+	private static Random random = new Random();
+	private static int newRandomInt(int min, int max) {
+		return min + random.nextInt(max - min + 1);
+	}
+	
 	public CaptureTheFlagGoal() {
-		super("Capture the flag", "");
+		super("Capture the flag", "Derjenige Spieler gewinnt, der zuerst"
+				+ " alle " + NUM_FLAG_CASTLES + " Flaggen-Schlösser erobert.");
 	}
 	
 	@Override
@@ -40,12 +50,23 @@ public class CaptureTheFlagGoal extends Goal {
 		if (game.getRound() < MIN_ROUND_FOR_WIN)
 			return null;
 		
+		if (flagCastles.size() < 1)
+			return null;
+		
+		return
 		// Check if all flag castles belong
 		// to exactly one player
-		
-		
-		return null;
-		
+		flagCastles.stream()
+		    .map(x -> x.getOwner())
+			.reduce(flagCastles.get(0).getOwner(), (x, y) -> {
+				if (x == null || y == null)
+					return null;
+				else if (!x.equals(y))
+					return null;
+				else
+					return x;
+			});
+				
 	}
 
 	@Override
@@ -59,12 +80,67 @@ public class CaptureTheFlagGoal extends Goal {
 	}
 	
 	/**
-	 * Distribute the flag castles
+	 * Distribute the flag castles evenly to
+	 * all players
 	 */
 	private void distributeFlagCastles() {
 		
+		Game game = this.getGame();
+		List<Player> players = game.getPlayers();
+		
+		int numCastlesToDistribute = 
+		/*if*/	NUM_FLAG_CASTLES < players.size() ?
+		/*then*/		players.size() :
+		/*else*/		NUM_FLAG_CASTLES;
+					
+		for (int i = 0; i < players.size(); i++) {
+			
+			int playersLeft = players.size() - i;
+			int numCastlesForPlayer = numCastlesToDistribute / playersLeft;
+			
+			if (numCastlesForPlayer > players.get(i).getCastles(game).size())
+				numCastlesForPlayer = players.get(i).getCastles(game).size();
+			
+			pickRandomCastles(players.get(i).getCastles(game), numCastlesForPlayer)
+				.stream()
+				.forEach(x -> flagCastles.add(x));
+			
+			numCastlesToDistribute -= numCastlesForPlayer;
+			
+		}
+		
+	}
+	
+	/**
+	 * Pick a number of random castles
+	 * @param castles All castles
+	 * @param num The number of castles to choose
+	 * @return The picked castles
+	 */
+	private List<Castle> pickRandomCastles(List<Castle> castles, int num) {
+		
+		int min = 0;
+		int max = castles.size();
+		
+		List<Integer> nums = new ArrayList<Integer>();
+		
+		if (num >= max)
+			return new ArrayList<Castle>(castles);
+		
+		for (int i = 0; i < num; i++) {
+			
+			int newNum = newRandomInt(min, max);
+			while (nums.contains(newNum))
+				newNum = newRandomInt(min, max);
+			nums.add(newNum);
+			
+		}
+		
+		return nums.stream().map(x -> castles.get(x)).collect(Collectors.toList());
 		
 		
 	}
+	
+	
 
 }