/// <summary>
/// 删除网格路面
/// </summary>
/// <param name="center"></param>
public void DestroyGridGraph(Vector3Int center)
{
if (dicGridGraph.TryGetValue(center, out GridGraph value))
{
AstarData astarData = AstarPath.active.data;
astarData.RemoveGraph(value);
dicGridGraph.Remove(center);
}
}
/**
* creates the navmesh for our grid
*/
private void CreateGraph()
{
AstarData data = AstarPath.active.data;
var graphs = data.graphs.ToList();
graphs.ForEach(x => data.RemoveGraph(x));
PointGraph graph = data.AddGraph(typeof(PointGraph)) as PointGraph;
AstarPath.active.Scan(graph);
// Make sure we only modify the graph when all pathfinding threads are paused
AstarPath.active.AddWorkItem(new AstarWorkItem(ctx => {
//create the graph
//first make node array
PointNode[,] nodeArray = new PointNode[map.GetUpperBound(0) + 1, map.GetUpperBound(1) + 1];
for (int y = 0; y <= map.GetUpperBound(0); y++)
{
for (int x = 0; x <= map.GetUpperBound(1); x++)
{
nodeArray[x, y] = graph.AddNode((Int3) new Vector3(x, y, 0));
}
}
int connections = 0;
//now connect nodes
for (int y = 0; y <= map.GetUpperBound(0); y++)
{
for (int x = 0; x <= map.GetUpperBound(1); x++)
{
for (int i = x - 1; i <= x + 1; i++)
{
for (int j = y - 1; j <= y + 1; j++)
{
if (InBounds(nodeArray, i, j))
{
nodeArray[x, y].AddConnection(nodeArray[i, j], (uint)map[x, y].MoveCost);
connections++;
}
}
}
}
}
}));
// Run the above work item immediately
AstarPath.active.FlushWorkItems();
}
