private void GhostMove(Ghost ghost)
{
int direction = Direction(ghost);
Invalidate(ghost.GetFrame());
// Moves the ghost based on the direction given by the Direction method
switch (direction)
{
case 1:
{
if (CanGhostMove(Side.left, ghost))
{
ghost.MoveLeft(ClientRectangle);
}
Invalidate(ghost.GetFrame());
break;
}
case 2:
{
if (CanGhostMove(Side.right, ghost))
{
ghost.MoveRight(ClientRectangle);
}
Invalidate(ghost.GetFrame());
break;
}
case 3:
{
if (CanGhostMove(Side.bottom, ghost))
{
ghost.MoveDown(ClientRectangle);
}
Invalidate(ghost.GetFrame());
break;
}
case 4:
{
if (CanGhostMove(Side.top, ghost))
{
ghost.MoveUp(ClientRectangle);
}
Invalidate(ghost.GetFrame());
break;
}
default:
break;
}
}
private bool CanGhostMove(Side aSide, Ghost ghost)
{
int theSide = (int)aSide;
Cell GhostCell = TheMaze.GetCellFromPoint(ghost.Position.X + 10, ghost.Position.Y + 10);
if (GhostCell.Walls[theSide] == 1)
{
if (GhostCell.GetWallRect((int)aSide).IntersectsWith(ghost.GetFrame()))
{
return false; // blocked
}
}
return true;
}
/* The Direction method gives each ghost a direction every time the GhostMove method is called.*/
private int Direction(Ghost ghost)
{
int direction = RandomDirection(1, 4);
if (CanGhostMove(Side.left, ghost) && ghost.prevDirection == 1)
direction = 1;
else
{
if (!CanGhostMove(Side.left, ghost) && ghost.prevDirection == 1)
{
if (!CanGhostMove(Side.top, ghost))
{
if (CanGhostMove(Side.bottom, ghost))
direction = 3;
else
direction = 2;
}
else
direction = 4;
}
}
if (CanGhostMove(Side.right, ghost) && ghost.prevDirection == 2)
direction = 2;
else
{
if (!CanGhostMove(Side.right, ghost) && ghost.prevDirection == 2)
{
if (!CanGhostMove(Side.top, ghost))
{
if (CanGhostMove(Side.bottom, ghost))
direction = 3;
else
direction = 1;
}
else
direction = 4;
}
}
if (CanGhostMove(Side.bottom, ghost) && ghost.prevDirection == 3)
direction = 3;
else
{
if (!CanGhostMove(Side.bottom, ghost) && ghost.prevDirection == 3)
{
if (!CanGhostMove(Side.right, ghost))
{
if (CanGhostMove(Side.left, ghost))
direction = 1;
else
direction = 4;
}
else
direction = 2;
}
}
if (CanGhostMove(Side.top, ghost) && ghost.prevDirection == 4)
direction = 4;
else
{
if (!CanGhostMove(Side.top, ghost) && ghost.prevDirection == 4)
{
if (!CanGhostMove(Side.right, ghost))
{
if (CanGhostMove(Side.left, ghost))
direction = 1;
else
direction = 3;
}
else
direction = 2;
}
}
ghost.prevDirection = direction; // Keep track of the previous direction of each ghost
return direction;
}
/* Checks if the ghost bumped into pacman
If it did, then the game ends. */
public void CheckGhost(Ghost ghost)
{
if (m_bGameDone == false)
{
if (TheEater.GetFrame().IntersectsWith(ghost.GetFrame()))
{
timer1.Stop();
PlaySoundInThread("pacman_dies.wav");
m_bGameDone = true;
int dotsEaten = NumberOfStones - Stones.Count;
MessageBox.Show("Game Over\nDots Eaten: " + dotsEaten);
LogScore(dotsEaten);
DisplayScores();
Invalidate(TheStatusMessage.GetFrame());
Application.Exit();
}
}
}
