/**
* Roads must be connected to a settlement or another road.
*/
public bool CanPlaceRoad(Player player, int col, int row, BoardGrid.EdgeSpecifier edgeSpec)
{
// Check if connected to a settlement of the same player
bool validbuildingWithNoRoadsNearby = false;
bool validbuildingNearby = false;
List <Vertex> adjacentVertices = boardGrid.GetConnectedVerticesFromEdge(col, row, edgeSpec);
foreach (Vertex vertex in adjacentVertices)
{
Settlement buildingObject = vertex.settlement;
if (buildingObject != null)
{
if (buildingObject != null)
{
if (buildingObject.ownerId == player.GetId())
{
validbuildingNearby = true;
int[] vertexPos = boardGrid.GetVertexPosition(vertex);
if (vertexPos != null)
{
List <Edge> edgesTemp = boardGrid.GetAdjacentEdgesFromVertex(vertexPos[0], vertexPos[1], (BoardGrid.VertexSpecifier)vertexPos[2]);
int roadCount = 0;
foreach (Edge edgeTemp in edgesTemp)
{
if (edgeTemp.road != null)
{
roadCount++;
}
}
if (roadCount == 0)
{
validbuildingWithNoRoadsNearby = true;
}
}
}
}
}
}
// Check if connected to a road of the same player
bool validRoadNearby = false;
List <Edge> adjacentEdges = boardGrid.GetConnectedEdgesFromEdge(col, row, edgeSpec);
foreach (Edge adjacentEdge in adjacentEdges)
{
if (adjacentEdge.road != null)
{
if (adjacentEdge.road.ownerId == player.GetId())
{
// Check that if the road is connected, that it is not interrupted by an enemy settlement
int[] adjacentEdgeCoords = boardGrid.GetEdgeCoordinates(adjacentEdge);
Vertex vertexBetweenRoads = boardGrid.GetVertexBetweenTwoConnectedEdges(col, row, edgeSpec, adjacentEdgeCoords[0], adjacentEdgeCoords[1], (BoardGrid.EdgeSpecifier)adjacentEdgeCoords[2]);
if (vertexBetweenRoads.settlement != null)
{
if (vertexBetweenRoads.settlement.ownerId == player.GetId())
{
validRoadNearby = true;
}
}
else
{
validRoadNearby = true;
}
}
}
}
// If it's the second turn, only let the player place next to the settlement with no road
if (GameManager.Instance.GetTurnCycle() == 2 && !validbuildingWithNoRoadsNearby)
{
return(false);
}
if (!validRoadNearby && !validbuildingNearby)
{
return(false);
}
// Check if cost requirements met
if (!player.CanAffordResourceTransaction(1, 0, 0, 1, 0) && player.freeRoads <= 0)
{
return(false);
}
// Check to see if tile is empty and have enough roads in store
Edge edge = boardGrid.GetEdge(col, row, edgeSpec);
if (edge.road == null && player.storeRoadNum > 0)
{
return(true);
}
else
{
return(false);
}
}