public List<Direction> GetDirection(Location loc1, Location loc2)
{
List<Direction> directions = new List<Direction>();
if (loc1.row < loc2.row)
{
if (loc2.row - loc1.row >= this.rows / 2)
{
directions.Add(Direction.NORTH);
}
else
{
directions.Add(Direction.SOUTH);
}
}
else if (loc1.row > loc2.row)
{
if (loc1.row - loc2.row >= this.rows / 2)
{
directions.Add(Direction.SOUTH);
}
else
{
directions.Add(Direction.NORTH);
}
}
if (loc1.col < loc2.col)
{
if (loc2.col - loc1.col >= this.cols / 2)
{
directions.Add(Direction.WEST);
}
else
{
directions.Add(Direction.EAST);
}
}
else if (loc1.col > loc2.col)
{
if (loc1.col - loc2.col >= this.cols / 2)
{
directions.Add(Direction.WEST);
}
else
{
directions.Add(Direction.EAST);
}
}
return directions;
}
/// <summary>
/// Create a new location constrained by the map size by moving in the direction specified
/// </summary>
/// <param name="loc">original location</param>
/// <param name="direction">direction to move</param>
/// <returns>location created after moving in direction from original location</returns>
public Location GetLocation(Location loc, Direction direction)
{
return new Location((loc.row + this.DIRECTIONS[(int)direction, 0]) % rows, (loc.col + this.DIRECTIONS[(int)direction, 1]) % cols);
}
public bool IsUnoccupied(Location loc)
{
// land, food and dead are unoccupied
if (this.game_map[loc.row, loc.col] == Game.LAND || this.game_map[loc.row, loc.col] == Game.FOOD || this.game_map[loc.row, loc.col] == Game.DEAD)
{
return true;
}
// eg Player A to Z, or Game.Water
return false;
}
// returns the eclidean distance between two locations
public double GetDistance(Location loc1, Location loc2)
{
int d1 = Math.Abs(loc1.row - loc2.row),
d2 = Math.Abs(loc1.col - loc2.col),
dr = Math.Min(d1, this.rows - d1),
dc = Math.Min(d2, this.cols - d2);
return Math.Sqrt(dr * dr + dc * dc);
}