/// <summary>Harvests resource</summary>
private bool Harvest(Beaver b, string resource)
{
// Don't bother harvesting if it can't hold anymore stuff
if (b.Branches + b.Food >= b.Job.CarryLimit)
{
return(false);
}
bool keepGoing = false;
// Function for finding movement targets
Func <Tile, bool> isTarget = t => t.Spawner != null && t.Spawner.Type == resource && !t.Spawner.HasBeenHarvested && t.Spawner.Health > 3;
// Find nearest resource, skipping current node
IEnumerable <Tile> basePath = this.FindPathCustom(b.Tile,
(t, parent) => {
double cost = this.GetCost(t, parent, b);
if (cost < 0)
{
return(cost);
}
return(this.IsNextTo(t, isTarget) ? 0 : cost);
})
.Skip(1);
// Traverse path
LinkedList <Tile> path = new LinkedList <Tile>(basePath);
while (path.Any())
{
// If can't move anymore
if (b.Moves < b.MoveCost(path.First()) || !b.Move(path.First()))
{
break;
}
path.RemoveFirst();
keepGoing = true;
}
// Try to harvest if next to the target spawner
Tile target = this.GetNeighborWhere(b.Tile, isTarget);
if (target != null && b.Actions > 0)
{
if (AI.Verbose)
{
Console.WriteLine("Harvesting resource");
}
b.Harvest(target.Spawner);
keepGoing = true;
}
return(keepGoing);
}
/// <summary>Gets off the lodge if it's on one</summary>
private bool GetOffLodge(Beaver b)
{
if (b.Tile.LodgeOwner == null)
{
return(false);
}
Tile target = this.GetNeighborWhere(b.Tile, t => t.LodgeOwner == null && b.Moves < b.MoveCost(t));
return(target != null && b.Move(target));
}
/// <summary>Attacks enemy beavers</summary>
private bool Attack(Beaver b)
{
if (b.Actions <= 0)
{
return(false);
}
bool retValue = false;
// Find suitable building spot
Func <Tile, bool> isTarget = t => t.Beaver != null && t.Beaver.Owner != this.Player && t.Beaver.Recruited;
IEnumerable <Tile> pfResult;
if (this.NextLodge == null)
{
// Look for a spot two spaces away from an unclaimed food spot
pfResult = this.FindPathCustom(b.Tile,
(t, parent) => {
double cost = this.GetCost(t, parent, b);
if (cost < 0)
{
return(cost);
}
return(this.IsNextTo(t, isTarget) ? 0 : cost);
})
.Skip(1);
// Look for a spot two spaces away from any unclaimed resource
if (!pfResult.Any())
{
pfResult = this.FindPathCustom(b.Tile,
(t, parent) => {
double cost = this.GetCost(t, parent, b);
if (cost < 0)
{
return(cost);
}
if (isTarget(t))
{
return(0);
}
return(cost);
})
.Skip(1);
}
// Set this as the next lodge spot
if (pfResult.Any())
{
this.NextLodge = pfResult.Last();
}
}
else
{
pfResult = this.FindPathCustom(b.Tile, this.NextLodge).Skip(1);
}
// Traverse path
LinkedList <Tile> path = new LinkedList <Tile>(pfResult);
while (path.Any())
{
// If can't move
if (b.Moves < b.MoveCost(path.First()) || !b.Move(path.First()))
{
break;
}
path.RemoveFirst();
retValue = true;
}
// Try to attack a beaver
Tile target = this.GetNeighborWhere(b.Tile, isTarget);
if (target != null)
{
while (b.Actions > 0 && b.Health > target.Beaver.Job.Damage)
{
b.Attack(target.Beaver);
}
}
return(retValue);
}
/// <summary>Builds lodges</summary>
private bool Build(Beaver b)
{
// Check if it can even build a lodge
if (b.Branches <= 0)
{
return(false);
}
bool retValue = false;
// Find suitable building spot
bool foodOnly = true;
// ReSharper disable once AccessToModifiedClosure
Func <Tile, bool> isTarget = t => t.LodgeOwner == null && t.Spawner == null && t.FlowDirection == null && this.IsNextTo(t, n1 => this.IsNextTo(n1, n2 => n2.Spawner != null && (!foodOnly || n2.Spawner.Type == "food") && !this.ClaimedResources.Contains(n2.Id)));
IEnumerable <Tile> basePath;
if (this.NextLodge == null)
{
// Look for a spot two spaces away from an unclaimed food spot
basePath = this.FindPathCustom(b.Tile,
(t, parent) => {
double cost = this.GetCost(t, parent, b);
if (cost < 0)
{
return(cost);
}
return(isTarget(t) ? 0 : cost);
})
.Skip(1);
// Look for a spot two spaces away from any unclaimed resource
if (!basePath.Any())
{
foodOnly = false;
basePath = this.FindPathCustom(b.Tile,
(t, parent) => {
double cost = this.GetCost(t, parent, b);
if (cost < 0)
{
return(cost);
}
return(isTarget(t) ? 0 : cost);
})
.Skip(1);
}
// Set this as the next lodge spot
if (basePath.Any())
{
this.NextLodge = basePath.Last();
}
}
else
{
basePath = this.FindPathCustom(b.Tile, this.NextLodge).Skip(1);
}
// Traverse path
LinkedList <Tile> path = new LinkedList <Tile>(basePath);
while (path.Any())
{
// If can't move
if (b.Moves < b.MoveCost(path.First()) || !b.Move(path.First()))
{
break;
}
path.RemoveFirst();
retValue = true;
}
// Try to build a lodge
Tile target = b.Tile;
if (isTarget(b.Tile))
{
if (b.Actions > 0 && target.Branches >= this.Player.BranchesToBuildLodge)
{
if (AI.Verbose)
{
Console.WriteLine("Building lodge");
}
b.BuildLodge();
this.NextLodge = null;
retValue = true;
// Set nearby food source as "claimed"
// TODO: If the lodge is destroyed, unclaim those sources
IEnumerable <Tile> sources = from n1 in new[] { target.TileNorth, target.TileEast, target.TileSouth, target.TileWest }
where n1 != null
from n2 in new[] { n1.TileNorth, n1.TileEast, n1.TileSouth, n1.TileWest }
where n2?.Spawner != null
select n2;
foreach (Tile source in sources)
{
this.ClaimedResources.Add(source.Id);
}
}
else if (b.Actions > 0 && b.Branches > 0)
{
if (AI.Verbose)
{
Console.WriteLine("Dropping branches for lodge");
}
b.Drop(target, nameof(b)); // branches
retValue = true;
}
}
return(retValue);
}
/// <summary>Picks up resource from owned lodges</summary>
private bool Pickup(Beaver b, string resource)
{
if (b.Branches + b.Food >= b.Job.CarryLimit)
{
return(false);
}
bool keepGoing = false;
// Go to nearest lodge with the given resource
Func <Tile, bool> isTarget = t => t.LodgeOwner == this.Player && resource == "branches" ? t.Branches > 0 : t.Food > 0;
// Find nearest resource, skipping current node
IEnumerable <Tile> basePath = this.FindPathCustom(b.Tile,
(t, parent) => {
double cost = this.GetCost(t, parent, b);
if (cost < 0)
{
return(cost);
}
if (this.IsNextTo(t, isTarget))
{
return(0);
}
return(cost);
})
.Skip(1);
// Traverse path
LinkedList <Tile> path = new LinkedList <Tile>(basePath);
while (path.Any())
{
// If can't move anymore
if (b.Moves < b.MoveCost(path.First()) || !b.Move(path.First()))
{
break;
}
path.RemoveFirst();
keepGoing = true;
}
// Try to pick up resources if next to the target lodge
Tile target = this.GetNeighborWhere(b.Tile, isTarget);
if (target != null && b.Actions > 0)
{
int amount = resource == "food" ? target.Food : target.Branches;
if (target.LodgeOwner == this.Player)
{
amount--;
}
amount = Math.Min(amount, b.Job.CarryLimit - b.Branches - b.Food);
if (amount > 0)
{
if (AI.Verbose)
{
Console.WriteLine("Picking up resource");
}
b.Pickup(target, resource, amount);
keepGoing = true;
}
}
return(keepGoing);
}
/// <summary>Stores carried resources in lodges</summary>
private bool Store(Beaver b)
{
// Don't bother storing if it doesn't have a full inventory
if (b.Branches + b.Food < b.Job.CarryLimit)
{
return(false);
}
bool retValue = false;
// Function for finding movement targets
Func <Tile, bool> isTarget = t => t.LodgeOwner == this.Player;
// Find nearest lodge, skipping current node
IEnumerable <Tile> basePath = this.FindPathCustom(b.Tile,
(t, parent) => {
double cost = this.GetCost(t, parent, b);
if (cost < 0)
{
return(cost);
}
return(this.IsNextTo(t, isTarget) ? 0 : cost);
})
.Skip(1);
// Traverse path
LinkedList <Tile> path = new LinkedList <Tile>(basePath);
while (path.Any())
{
// If can't move anymore
if (b.Moves < b.MoveCost(path.First()) || !b.Move(path.First()))
{
break;
}
path.RemoveFirst();
retValue = true;
}
// Drop off resources at lodge
Tile target = this.GetNeighborWhere(b.Tile, isTarget);
if (target != null && b.Actions > 0)
{
if (AI.Verbose)
{
Console.WriteLine("Dropping resources on lodge");
}
if (b.Branches > 0)
{
b.Drop(target, "b"); // branches
}
if (b.Food > 0)
{
b.Drop(target, "f"); // food
}
retValue = true;
}
return(retValue);
}