private bool WallAt(Point cell, BaseMap map)
{
if (cell.X >= 0 && cell.Y >= 0 && cell.X < map.Size.X && cell.Y < map.Size.Y)
{
return(map.CollisionLayer[cell.X, cell.Y]);
}
else
{
return(false);
}
}
public void MovePlayer(BaseMap map, float? customDeltaTime = null)
{
if (IsAlive)
{
IsMoving = RealMovePlayer(customDeltaTime);
// If the player is moving
if (IsMoving)
{
ComputeWallCollision(map);
}
if (CurrentDirection != PreviousDirection)
{
SendPosition();
}
// Call Update method of DynamicEntity class
base.Update();
PreviousDirection = CurrentDirection;
}
}
protected void ComputeWallCollision(BaseMap map)
{
#region Smooth movement
// If the player want to go to top...
if (CurrentDirection == LookDirection.Up)
{
// ... and that there is a wall
if (WallAt(new Point(CellPosition.X, CellPosition.Y - 1), map))
{
// If he is more on the left side, we lag him to the left
if (IsMoreLeftSide() && !WallAt(new Point(CellPosition.X - 1, CellPosition.Y - 1), map))
{
if (!WallAt(new Point(CellPosition.X - 1, CellPosition.Y), map))
{
Position = new Vector2(Position.X - GetMovementSpeed(), Position.Y);
}
}
else if (IsMoreRightSide() &&
!WallAt(new Point(CellPosition.X + 1, CellPosition.Y - 1), map))
{
if (!WallAt(new Point(CellPosition.X + 1, CellPosition.Y), map))
{
Position = new Vector2(Position.X + GetMovementSpeed(), Position.Y);
}
}
}
// ... and that there is no wall
else
{
// If he is more on the left side
if (IsMoreLeftSide())
{
Position = new Vector2(Position.X + GetMovementSpeed(), Position.Y);
}
// If he is more on the right side
else if (IsMoreRightSide())
{
Position = new Vector2(Position.X - GetMovementSpeed(), Position.Y);
}
}
}
// If the player want to go to bottom and that there is a wall
else if (CurrentDirection == LookDirection.Down)
{
// Wall at the bottom ?
if (WallAt(new Point(CellPosition.X, CellPosition.Y + 1), map))
{
// If he is more on the left side, we lag him to the left
if (IsMoreLeftSide() && !WallAt(new Point(CellPosition.X - 1, CellPosition.Y + 1), map))
{
if (!WallAt(new Point(CellPosition.X - 1, CellPosition.Y), map))
{
Position = new Vector2(Position.X - GetMovementSpeed(), Position.Y);
}
}
else if (IsMoreRightSide() &&
!WallAt(new Point(CellPosition.X + 1, CellPosition.Y + 1), map))
{
if (!WallAt(new Point(CellPosition.X + 1, CellPosition.Y), map))
{
Position = new Vector2(Position.X + GetMovementSpeed(), Position.Y);
}
}
}
else
{
// If he is more on the left side
if (IsMoreLeftSide())
{
Position = new Vector2(Position.X + GetMovementSpeed(), Position.Y);
}
// If he is more on the right side
else if (IsMoreRightSide())
{
Position = new Vector2(Position.X - GetMovementSpeed(), Position.Y);
}
}
}
// If the player want to go to left and that there is a wall
else if (CurrentDirection == LookDirection.Left)
{
if (WallAt(new Point(CellPosition.X - 1, CellPosition.Y), map))
{
// If he is more on the top side, we lag him to the top
if (IsMoreTopSide() && !WallAt(new Point(CellPosition.X - 1, CellPosition.Y - 1), map))
{
if (!WallAt(new Point(CellPosition.X, CellPosition.Y - 1), map))
{
Position = new Vector2(Position.X, Position.Y - GetMovementSpeed());
}
}
else if (IsMoreBottomSide() && !WallAt(new Point(CellPosition.X - 1, CellPosition.Y + 1), map))
{
if (!WallAt(new Point(CellPosition.X, CellPosition.Y + 1), map))
{
Position = new Vector2(Position.X, Position.Y + GetMovementSpeed());
}
}
}
else
{
// If he is more on the top side, we lag him to the bottom
if (IsMoreTopSide())
{
Position = new Vector2(Position.X, Position.Y + GetMovementSpeed());
}
else if (IsMoreBottomSide())
{
Position = new Vector2(Position.X, Position.Y - GetMovementSpeed());
}
}
}
// If the player want to go to right and that there is a wall
else if (CurrentDirection == LookDirection.Right)
{
if (WallAt(new Point(CellPosition.X + 1, CellPosition.Y), map))
{
// If he is more on the top side, we lag him to the top
if (IsMoreTopSide() && !WallAt(new Point(CellPosition.X + 1, CellPosition.Y - 1), map))
{
if (!WallAt(new Point(CellPosition.X, CellPosition.Y - 1), map))
{
Position = new Vector2(Position.X, Position.Y - GetMovementSpeed());
}
}
else if (IsMoreBottomSide() &&
!WallAt(new Point(CellPosition.X + 1, CellPosition.Y + 1), map))
{
if (!WallAt(new Point(CellPosition.X, CellPosition.Y + 1), map))
{
Position = new Vector2(Position.X, Position.Y + GetMovementSpeed());
}
}
}
else
{
// If he is more on the top side, we lag him to the top
if (IsMoreTopSide())
{
Position = new Vector2(Position.X, Position.Y + GetMovementSpeed());
}
else if (IsMoreBottomSide())
{
Position = new Vector2(Position.X, Position.Y - GetMovementSpeed());
}
}
}
#endregion
#region Wall collision
// -- Vertical check -- //
// Is there a wall on the top ?
if (WallAt(new Point(CellPosition.X, CellPosition.Y - 1), map))
{
// Is there a wall on the bottom ?
if (WallAt(new Point(CellPosition.X, CellPosition.Y + 1), map))
{
// Top collision and Bottom collision
if ((CurrentDirection == LookDirection.Up && IsMoreTopSide()) ||
(CurrentDirection == LookDirection.Down && IsMoreBottomSide()))
{
PositionY = CellPosition.Y * Engine.TileHeight;
}
}
// No wall at the bottom
else
{
// Top collision
if (CurrentDirection == LookDirection.Up && IsMoreTopSide())
{
PositionY = CellPosition.Y * Engine.TileHeight;
}
}
}
// Wall only at the bottom
else if (WallAt(new Point(CellPosition.X, CellPosition.Y + 1), map))
{
// Bottom collision
if (CurrentDirection == LookDirection.Down && IsMoreBottomSide())
{
PositionY = CellPosition.Y * Engine.TileHeight;
}
// To lag him
else if (CurrentDirection == LookDirection.Down)
{
if (IsMoreLeftSide())
{
PositionX += GetMovementSpeed();
}
else if (IsMoreRightSide())
{
PositionX -= GetMovementSpeed();
}
}
}
// -- Horizontal check -- //
// Is there a wall on the left ?
if (WallAt(new Point(CellPosition.X - 1, CellPosition.Y), map))
{
// Is there a wall on the right ?
if (WallAt(new Point(CellPosition.X + 1, CellPosition.Y), map))
{
// Left and right collisions
if ((CurrentDirection == LookDirection.Left && IsMoreLeftSide()) ||
(CurrentDirection == LookDirection.Right && IsMoreRightSide()))
{
PositionX = CellPosition.X * Engine.TileWidth - Engine.TileWidth / 2 +
Engine.TileWidth / 2;
}
}
// Wall only at the left
else
{
// Left collision
if (CurrentDirection == LookDirection.Left && IsMoreLeftSide())
{
PositionX = CellPosition.X * Engine.TileWidth - Engine.TileWidth / 2 +
Engine.TileWidth / 2;
}
}
}
// Wall only at the right
else if (WallAt(new Point(CellPosition.X + 1, CellPosition.Y), map))
{
// Right collision
if (CurrentDirection == LookDirection.Right && IsMoreRightSide())
{
PositionX = CellPosition.X * Engine.TileWidth - Engine.TileWidth / 2 + Engine.TileWidth / 2;
}
}
#endregion
// The player must stay in the map
PositionX = MathHelper.Clamp(Position.X, Engine.TileWidth, (map.Size.X * Engine.TileWidth) - 2 * Engine.TileWidth);
PositionY = MathHelper.Clamp(Position.Y, Engine.TileHeight, (map.Size.Y * Engine.TileHeight) - 2 * Engine.TileWidth);
}