public void PlayerDrawRoute(int pixelX, int pixelY)
{
var startUnit = _units.FindSelectedUnit();
if (startUnit != null)
{
var cube = HexGridMath.HexToCube(HexGridMath.PixelToHex(pixelX, pixelY));
var destination = HexGridMath.CubeToOffset(cube.X, cube.Y, cube.Z);
if (startUnit.Col != destination.Col || startUnit.Row != destination.Row)
{
_shortestPath.ComputeShortestPath((TerrainMap)_terrainMap, startUnit.Col, startUnit.Row, destination.Col, destination.Row, startUnit.UnitType);
if (_shortestPath.WayPoint.Count > 0)
{
_shortestPath.WayPoint.Insert(0, new Offset(startUnit.Col, startUnit.Row));
}
for (int i = 1; i < _shortestPath.WayPoint.Count; i++)
{
GameContent.Sb.Begin(SpriteSortMode.BackToFront, BlendState.AlphaBlend);
GraphicHelpers.DrawLine(_shortestPath.WayPoint[i - 1].ToPixel, _shortestPath.WayPoint[i].ToPixel, Color.Red, 6);
GameContent.Sb.End();
}
}
}
}
public void PlotRoad(int startCol, int startRow, int destCol, int destRow)
{
// find shortest path
_shortestPath.ComputeShortestPath(this, startCol, startRow, destCol, destRow, -1);
// add the starting cell to the path
_shortestPath.WayPoint.Insert(0, new Offset(startCol, startRow));
TerrainCell prevTerrain = null;
Cube prevTerrainCube = null;
foreach (var wayPointOffset in _shortestPath.WayPoint)
{
var terrainCube = HexGridMath.OffsetToCube(wayPointOffset.Col, wayPointOffset.Row);
var terrain = (TerrainCell)Map[FindMapHash(terrainCube.X, terrainCube.Y, terrainCube.Z)];
// figure out which sides of the cell are touching
if (prevTerrain != null)
{
if (prevTerrainCube.Y == terrainCube.Y) // lower left to upper right
{
if (terrainCube.X > prevTerrainCube.X)
{
if (prevTerrain.BackgroundType != 40)
{
prevTerrain.Roads |= RoadType.Road3;
}
if (terrain.BackgroundType != 40)
{
terrain.Roads |= RoadType.Road6;
}
}
else
{
if (prevTerrain.BackgroundType != 40)
{
prevTerrain.Roads |= RoadType.Road6;
}
if (terrain.BackgroundType != 40)
{
terrain.Roads |= RoadType.Road3;
}
}
}
else if (prevTerrainCube.Z == terrainCube.Z) // upper left to lower right
{
if (terrainCube.Y > prevTerrainCube.Y)
{
if (prevTerrain.BackgroundType != 40)
{
prevTerrain.Roads |= RoadType.Road5;
}
if (terrain.BackgroundType != 40)
{
terrain.Roads |= RoadType.Road2;
}
}
else
{
if (prevTerrain.BackgroundType != 40)
{
prevTerrain.Roads |= RoadType.Road2;
}
if (terrain.BackgroundType != 40)
{
terrain.Roads |= RoadType.Road5;
}
}
}
else if (prevTerrainCube.X == terrainCube.X) // vertical line
{
if (terrainCube.Y > prevTerrainCube.Y)
{
if (prevTerrain.BackgroundType != 40)
{
prevTerrain.Roads |= RoadType.Road4;
}
if (terrain.BackgroundType != 40)
{
terrain.Roads |= RoadType.Road1;
}
}
else
{
if (prevTerrain.BackgroundType != 40)
{
prevTerrain.Roads |= RoadType.Road1;
}
if (terrain.BackgroundType != 40)
{
terrain.Roads |= RoadType.Road4;
}
}
}
else
{
// should never get here
System.Diagnostics.Debug.Assert(false);
}
}
prevTerrain = terrain;
prevTerrainCube = terrainCube;
}
}
public void FindShortestPath(ITerrainMap terrainMap, int unitCol, int unitRow, int endCol, int endRow, int unitUnitType)
{
_shortestPath.ComputeShortestPath(terrainMap, unitCol, unitRow, endCol, endRow, unitUnitType);
}