From f5c00e32e6f32ca1216c72281b547faf372f0179 Mon Sep 17 00:00:00 2001
From: manuel <manuel@mausz.at>
Date: Sun, 17 Apr 2011 21:50:32 +0200
Subject: funny ai implementation

---
 pacman-c++/server.cpp | 63 +++++++++++++++++++++++++++++++++------------------
 1 file changed, 41 insertions(+), 22 deletions(-)

(limited to 'pacman-c++/server.cpp')

diff --git a/pacman-c++/server.cpp b/pacman-c++/server.cpp
index 9baa9ab..516d1f7 100644
--- a/pacman-c++/server.cpp
+++ b/pacman-c++/server.cpp
@@ -54,7 +54,8 @@ bool Server::run()
 void Server::tick()
 {
   //qDebug() << "[Tick] Doing server update";
-  //TODO: add ai here
+  foreach(Color::Color color, m_bots)
+    aiCalculate(m_actors[color]);
   Transmission::map_t map = calculateUpdates();
   updateMap(map);
 
@@ -89,27 +90,7 @@ invalid_direction:
     qDebug() << "[Calc] Actor wants to move: color=" << i.key()
         << "pos=" << mapPosition << "direction=" << direction;
 
-    QPoint newMapPosition = mapPosition;
-    switch (direction)
-    {
-    case Actor::Up:
-      newMapPosition += QPoint(0, -1);
-      break;
-    case Actor::Down:
-      newMapPosition += QPoint(0, 1);
-      break;
-    case Actor::Left:
-      newMapPosition += QPoint(-1, 0);
-      break;
-    case Actor::Right:
-      newMapPosition += QPoint(1, 0);
-      break;
-    case Actor::None:
-      break;
-    default:
-      Q_ASSERT(false);
-    }
-
+    QPoint newMapPosition = mapPosition + Actor::movementToPoint(direction);
     if (newMapPosition.x() < 0)
       newMapPosition.setX(0);
     if (newMapPosition.x() >= visualMap.size())
@@ -308,7 +289,10 @@ bool Server::waitForClientConnections()
   }
 
   for (unsigned int i = (m_maxplayers - m_numbots); i < m_maxplayers; ++i)
+  {
     m_bots.append(Color::order[i]);
+    m_actorMovements[Color::order[i]] = Actor::None;
+  }
 
   qDebug() << "[Server] All Clients connected";
   return true;
@@ -355,6 +339,41 @@ void Server::sendUpdate(Transmission::map_t map)
   }
 }
 
+void Server::aiCalculate(Actor *actor)
+{
+  /* move as long as possible in one direction */
+  if (m_actorMovements[actor->color()] != Actor::None)
+    return;
+
+  QPoint actorpos = CoordToMapPosition(actor->pos().toPoint());
+  QList<Actor::Movement> directions;
+  directions << Actor::Left << Actor::Right << Actor::Up << Actor::Down;
+
+  QMutableListIterator<Actor::Movement> i(directions);
+  while(i.hasNext())
+  {
+    i.next();
+    Actor::Movement direction = i.value();
+    QPoint pos = actorpos + Actor::movementToPoint(direction);
+    if (pos.x() < 0 || pos.x() >= visualMap.size())
+      continue;
+    if (pos.y() < 0 || pos.y() >= visualMap[pos.x()].size())
+      continue;
+    GameEntity *item = visualMap[pos.x()][pos.y()];
+
+    /* check if neighbour is a block */
+    Block *block = qgraphicsitem_cast<Block *>(item);
+    if (block != NULL && block->color() != actor->color())
+    {
+      i.remove();
+      continue;
+    }
+  }
+
+  int rand = (int) (directions.size() * (qrand() / (RAND_MAX + 1.0)));
+  m_actorMovements[actor->color()] = directions.at(rand);
+}
+
 void Server::keyPressUpdate()
 {
   ProtoBuf::KeyPressUpdate packet;
-- 
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