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Add a method returning the closest edge cell matching a condition to Map

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This commit is contained in:
Oliver Brakmann
2016-02-27 23:21:27 +01:00
parent f547a4b6e9
commit be3bd52474
1 changed files with 39 additions and 12 deletions
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51
OpenRA.Game/Map/Map.cs
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@@ -250,6 +250,7 @@ namespace OpenRA
[FieldLoader.Ignore] public ProjectedCellRegion ProjectedCellBounds;
[FieldLoader.Ignore] public CellRegion AllCells;
public List<CPos> AllEdgeCells { get; private set; }
void AssertExists(string filename)
{
@@ -392,6 +393,8 @@ namespace OpenRA
CustomTerrain = new CellLayer<byte>(this);
foreach (var uv in AllCells.MapCoords)
CustomTerrain[uv] = byte.MaxValue;
AllEdgeCells = UpdateEdgeCells();
}
void InitializeCellProjection()
@@ -1056,20 +1059,44 @@ namespace OpenRA
return edge.V == Bounds.Bottom ? unProjected.MaxBy(x => x.V) : unProjected.MinBy(x => x.V);
}
public CPos ChooseClosestMatchingEdgeCell(CPos cell, Func<CPos, bool> match)
{
return AllEdgeCells.OrderBy(c => (cell - c).Length).FirstOrDefault(c => match(c));
}
List<CPos> UpdateEdgeCells()
{
var edgeCells = new List<CPos>();
var unProjected = new List<MPos>();
var bottom = Bounds.Bottom - 1;
for (var u = Bounds.Left; u < Bounds.Right; u++)
{
unProjected = Unproject(new PPos(u, Bounds.Top));
if (unProjected.Any())
edgeCells.Add(unProjected.MinBy(x => x.V).ToCPos(Grid.Type));
unProjected = Unproject(new PPos(u, bottom));
if (unProjected.Any())
edgeCells.Add(unProjected.MaxBy(x => x.V).ToCPos(Grid.Type));
}
for (var v = Bounds.Top; v < Bounds.Bottom; v++)
{
unProjected = Unproject(new PPos(Bounds.Left, v));
if (unProjected.Any())
edgeCells.Add((v == bottom ? unProjected.MaxBy(x => x.V) : unProjected.MinBy(x => x.V)).ToCPos(Grid.Type));
unProjected = Unproject(new PPos(Bounds.Right - 1, v));
if (unProjected.Any())
edgeCells.Add((v == bottom ? unProjected.MaxBy(x => x.V) : unProjected.MinBy(x => x.V)).ToCPos(Grid.Type));
}
return edgeCells;
}
public CPos ChooseRandomEdgeCell(MersenneTwister rand)
{
List<MPos> cells;
do
{
var isU = rand.Next(2) == 0;
var edge = rand.Next(2) == 0;
var u = isU ? rand.Next(Bounds.Left, Bounds.Right) : (edge ? Bounds.Left : Bounds.Right);
var v = !isU ? rand.Next(Bounds.Top, Bounds.Bottom) : (edge ? Bounds.Top : Bounds.Bottom);
cells = Unproject(new PPos(u, v));
} while (!cells.Any());
return cells.Random(rand).ToCPos(Grid.Type);
return AllEdgeCells.Random(rand);
}
public WDist DistanceToEdge(WPos pos, WVec dir)