private CellLocation FindNearestCoinOrPowerPill(IReadOnlyCollection <CellLocation> coins, IReadOnlyCollection <CellLocation> powerPills, Distances shortestDistances)
{
var bestTarget = default(CellLocation);
var shortestDistance = int.MaxValue;
foreach (var coin in coins)
{
var distanceToCoin = shortestDistances.DistanceTo(coin);
if (distanceToCoin < shortestDistance)
{
shortestDistance = distanceToCoin;
bestTarget = coin;
}
}
foreach (var pill in powerPills)
{
var distanceToPill = shortestDistances.DistanceTo(pill);
if (distanceToPill < shortestDistance)
{
shortestDistance = distanceToPill;
bestTarget = pill;
}
}
return(bestTarget);
}
private BotGhost?FindNearestGhost(BotGhost[] ghosts, Distances shortestDistances)
{
var closestGhost = default(BotGhost);
var shortestDistance = int.MaxValue;
foreach (var ghost in ghosts.Where(g => !g.Edible))
{
var distanceToGhost = shortestDistances.DistanceTo(ghost.Location);
if (distanceToGhost < shortestDistance)
{
shortestDistance = distanceToGhost;
closestGhost = ghost;
}
}
return(closestGhost);
}
private CellLocation FindNearestCoin(IReadOnlyCollection <CellLocation> coins, Distances shortestDistances)
{
var bestCoin = default(CellLocation);
var shortestDistance = int.MaxValue;
foreach (var coin in coins)
{
var distanceToCoin = shortestDistances.DistanceTo(coin);
if (distanceToCoin < shortestDistance)
{
shortestDistance = distanceToCoin;
bestCoin = coin;
}
}
return(bestCoin);
}
private Direction AvoidGhost(LinkedCell currentLocation,
Distances shortestDistances, Direction bestDirectionToNearestCoin, BotGhost?nearestGhost)
{
if (nearestGhost is object)
{
var distanceToGhost = shortestDistances.DistanceTo(nearestGhost.Location);
if (distanceToGhost < 5)
{
var directionToScaryGhost = shortestDistances.DirectionToTarget(nearestGhost.Location);
if (directionToScaryGhost == bestDirectionToNearestCoin)
{
bestDirectionToNearestCoin = PickDifferentDirection(currentLocation, directionToScaryGhost);
}
}
}
return(bestDirectionToNearestCoin);
}