private int ShouldLaunchShips(ReadOnlyMap map, ReadOnlyPlanetData source, ReadOnlyPlanetData destination)
{
if (!IsVisible(map, source, destination))
{
return(0);
}
return(source.OwnerId == destination.OwnerId
? ShouldLaunchReinforcementShips(map, source, destination)
: ShouldLaunchAttackShips(map, source, destination));
}
private int ShouldLaunchReinforcementShips(ReadOnlyMap map, ReadOnlyPlanetData source,
ReadOnlyPlanetData destination)
{
var stupidPower = (1 - source.Power) * (1 - _options.ClevernessFactor);
var powerRatio = (source.Power + stupidPower) / destination.Power;
var shouldLaunch = powerRatio < 1;
if (!shouldLaunch)
{
return(0);
}
var ships = (int)Math.Floor(source.Ships * _options.RiskFactor);
return(ships);
}
private IEnumerable <Candidate> GetCandidates(
ReadOnlyMap map,
ReadOnlyPlanetData source,
IEnumerable <ReadOnlyPlanetData> otherPlanets,
ReadOnlyPlanetData myTopPlanet,
ReadOnlyPlanetData topPlanet)
{
return(otherPlanets
.Select(destination => new Candidate
{
Source = source,
Destination = destination,
Ships = ShouldLaunchShips(map, source, destination),
MyTopPlanet = myTopPlanet,
TopPlanet = topPlanet
})
.Where(fleet => fleet.Ships > 0));
}
private int ShouldLaunchAttackShips(ReadOnlyMap map, ReadOnlyPlanetData source, ReadOnlyPlanetData destination)
{
var distance = map.CalculateDistance(source.Position, destination.Position);
var enemyExpectedPower = (destination.Ships + destination.ProductionRate * distance) * destination.Power;
var requiredShips = (int)Math.Ceiling(enemyExpectedPower / source.Power * _options.ClevernessFactor);
var enoughShips = source.Ships >= requiredShips;
if (!enoughShips)
{
return(0);
}
var difference = source.Ships - requiredShips;
if (difference == 0)
{
return(requiredShips);
}
var addition = (int)Math.Floor(difference - _options.RiskFactor * difference);
return(requiredShips + addition);
}
private static double RankPlanet(ReadOnlyPlanetData planet)
{
return(planet.Power * planet.ProductionRate);
}
private bool IsVisible(ReadOnlyMap map, ReadOnlyPlanetData source, ReadOnlyPlanetData destination)
{
var distance = map.CalculateDistance(source.Position, destination.Position);
return(distance < map.MaxDistance * _options.VisionFactor);
}