From 33bc4cab3f2a00db14e6d055d6cd55781c9dd2b4 Mon Sep 17 00:00:00 2001
From: Pacien TRAN-GIRARD
Date: Wed, 11 May 2016 18:44:21 +0200
Subject: Implement game state broadcasting

---
 src/ch/epfl/xblast/server/Server.java | 31 +++++++++++++++++++++++++++++--
 1 file changed, 29 insertions(+), 2 deletions(-)

(limited to 'src/ch')

diff --git a/src/ch/epfl/xblast/server/Server.java b/src/ch/epfl/xblast/server/Server.java
index 6d8db2c..4929dd9 100644
--- a/src/ch/epfl/xblast/server/Server.java
+++ b/src/ch/epfl/xblast/server/Server.java
@@ -3,6 +3,7 @@ package ch.epfl.xblast.server;
 import ch.epfl.xblast.Lists;
 import ch.epfl.xblast.PlayerAction;
 import ch.epfl.xblast.PlayerID;
+import ch.epfl.xblast.server.painter.BoardPainter;
 
 import java.io.IOException;
 import java.net.InetSocketAddress;
@@ -26,6 +27,15 @@ public class Server {
 
     private static class Channel {
 
+        private static byte[] toByteArray(List<Byte> l) {
+            byte[] arr = new byte[l.size()];
+
+            for (int i = 0; i < l.size(); ++i)
+                arr[i] = l.get(i);
+
+            return arr;
+        }
+
         private static InetSocketAddress listeningInterface(String host, int port) {
             if (Objects.isNull(host))
                 return new InetSocketAddress(port);
@@ -88,6 +98,15 @@ public class Server {
             return Collections.unmodifiableMap(actions);
         }
 
+        void send(List<Byte> content, SocketAddress dst) {
+            try {
+                ByteBuffer buf = ByteBuffer.wrap(toByteArray(content));
+                this.channel.send(buf, dst);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+
         private Optional<Map.Entry<SocketAddress, Byte>> receiveByte(boolean block) {
             try {
                 ByteBuffer buf = ByteBuffer.allocate(1);
@@ -171,9 +190,8 @@ public class Server {
 
         while (!gameState.isGameOver()) {
             long computationStartTime = System.nanoTime();
-
             gameState = updateGameState(updateGameState(gameState));
-
+            broadcastGameState(gameState);
             delay(REFRESH_RATE - (computationStartTime - System.nanoTime()));
         }
     }
@@ -183,4 +201,13 @@ public class Server {
         return gs.next(events);
     }
 
+    private void broadcastGameState(GameState gs) {
+        List<Byte> serialized = GameStateSerializer.serialize(BoardPainter.DEFAULT_BOARD_PAINTER, gs);
+
+        for (Map.Entry<SocketAddress, PlayerID> client : this.registeredClientsMap.entrySet()) {
+            byte activePlayer = Objects.nonNull(client) ? client.getValue().toByte() : PlayerID.OBSERVER;
+            this.channel.send(Lists.prepended(serialized, activePlayer), client.getKey());
+        }
+    }
+
 }
-- 
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