private static bool IsOwner(ILogicObject areasGroup)
{
if (areasGroup.ClientHasPrivateState)
{
return(true);
}
var areas = LandClaimSystem.ClientGetKnownAreasForGroup(areasGroup);
foreach (var area in areas)
{
if (LandClaimSystem.ClientIsOwnedArea(area))
{
return(true);
}
}
return(false);
}
/// <summary>
/// This check prevents the abuse of the shield mechanic for this layout:
/// * * *
/// * X *
/// * * *
/// Where X is the land claim surrounded by 8 other * land claims (of max tier level),
/// but not connected to them so normally it should provide its own shield.
/// </summary>
public static bool SharedIsLandClaimInsideAnotherBase(ILogicObject areasGroup)
{
var groupAreas = Api.IsServer
? LandClaimAreasGroup.GetPrivateState(areasGroup).ServerLandClaimsAreas
: LandClaimSystem.ClientGetKnownAreasForGroup(areasGroup);
if (groupAreas.Count() > 1)
{
// definitely cannot be inside another base as the base size is limited to 3*3 bases
return(false);
}
// Check whether this area is surrounded by other land claims.
// We will use a flood fill approach.
// First, create and fill an array of tiles occupied by other land claims
// for the max land claim area bounds.
var centerArea = groupAreas.First();
var centerAreaState = LandClaimArea.GetPublicState(centerArea);
var landClaimCenterTilePosition = centerAreaState.LandClaimCenterTilePosition;
var newAreaBounds = LandClaimSystem.SharedCalculateLandClaimAreaBounds(
landClaimCenterTilePosition,
(ushort)(LandClaimSystem.MaxLandClaimSizeWithGraceArea.Value
// reduce the outer bounds as it's the buffer area
- LandClaimSystem.MinPaddingSizeOneDirection * 2));
using var tempListAreas = Api.Shared.GetTempList <ILogicObject>();
{
using var tempList = Api.Shared.GetTempList <ILogicObject>();
LandClaimSystem.SharedGetAreasInBounds(newAreaBounds,
tempList,
addGracePadding: true);
foreach (var area in tempList.AsList())
{
tempListAreas.AddIfNotContains(area);
}
}
if (tempListAreas.Count == 1)
{
// there is only a single area
return(false);
}
var arraySizeX = newAreaBounds.Width + 2;
var arraySizeY = newAreaBounds.Height + 2;
var arrayOffset = new Vector2Int(newAreaBounds.X - 1, newAreaBounds.Y - 1);
var arrayCoverage = new bool[arraySizeX, arraySizeY];
foreach (var otherArea in tempListAreas.AsList())
{
if (ReferenceEquals(centerArea, otherArea))
{
continue;
}
var bounds = LandClaimSystem.SharedGetLandClaimAreaBounds(otherArea, addGracePadding: false);
FillArray(new RectangleInt(bounds.X - arrayOffset.X,
bounds.Y - arrayOffset.Y,
bounds.Width,
bounds.Height));
}
WriteArrayToLog();
// now we have a filled array, detect whether it represents an enclosed space by filling it from the center
var isEnclosed = TestIsEnclosed((arraySizeX / 2, arraySizeY / 2));
//Api.Logger.Dev("Result: " + (isEnclosed ? "Enclosed" : "Not enclosed"));
WriteArrayToLog();
return(isEnclosed);
void FillArray(RectangleInt bounds)
{
var fromX = Math.Max(0, bounds.Left);
var fromY = Math.Max(0, bounds.Bottom);
var toX = Math.Min(arraySizeX, bounds.Right);
var toY = Math.Min(arraySizeY, bounds.Top);
for (var y = fromY; y < toY; y++)
{
for (var x = fromX; x < toX; x++)
{
arrayCoverage[x, y] = true;
}
}
}
bool TestIsEnclosed(Vector2Int startPosition)
{
var stack = new Stack <Vector2Int>();
stack.Push(startPosition);
while (stack.Count > 0)
{
var pos = stack.Pop();
if (pos.X < 0 ||
pos.Y < 0 ||
pos.X >= arraySizeX ||
pos.Y >= arraySizeY)
{
// reached the bound - not enclosed
return(false);
}
if (arrayCoverage[pos.X, pos.Y])
{
// another land claim there or already visited
continue;
}
arrayCoverage[pos.X, pos.Y] = true; // fill it
stack.Push((pos.X - 1, pos.Y));
stack.Push((pos.X + 1, pos.Y));
stack.Push((pos.X, pos.Y - 1));
stack.Push((pos.X, pos.Y + 1));
}
// was unable to reach the bound (filled in the enclosed space)
return(true);
}
void WriteArrayToLog()
{
// we don't need this debug data but it might be useful someday
return;
var sb = new StringBuilder("Coverage array: (Y is reversed)").AppendLine();
for (var y = 0; y < arraySizeY; y++)
{
for (var x = 0; x < arraySizeX; x++)
{
sb.Append(arrayCoverage[x, y] ? "x" : ".");
}
sb.AppendLine();
}
Api.Logger.Dev(sb);
}
}