epic/OpenRA
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

FindUnitPathToRange

Browse Source
This commit is contained in:
Chris Forbes
2009-10-26 23:46:13 +13:00
parent fba0cb4cdc
commit 01198a69e4
2 changed files with 34 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
OpenRa.Game/Game.cs
View File

@@ -158,8 +158,19 @@ namespace OpenRa.Game
{
return FindUnits(a - new float2(r, r), a + new float2(r, r))
.Where(x => (x.CenterLocation - a).LengthSquared < r * r);
}
}
public static IEnumerable<int2> FindTilesInCircle(int2 a, int r)
{
var min = a - new int2(r, r);
var max = a + new int2(r, r);
for (var j = min.Y; j <= max.Y; j++)
for (var i = min.X; i <= max.X; i++)
if (r * r >= (new int2(i, j) - a).LengthSquared)
yield return new int2(i, j);
}
public static IEnumerable<Actor> SelectUnitsInBox(float2 a, float2 b)
{
return FindUnits(a, b).Where(x => x.Owner == LocalPlayer && x.traits.Contains<Traits.Mobile>());

30
OpenRa.Game/PathFinder.cs
View File

@@ -1,6 +1,7 @@
using System;
using System.Collections.Generic;
using IjwFramework.Collections;
using System.Linq;
using OpenRa.FileFormats;
using OpenRa.Game.Graphics;
@@ -30,21 +31,32 @@ namespace OpenRa.Game
return FindUnitPath(src, DefaultEstimator(dest), umt);
}
public List<int2> FindUnitPathToRange(int2 src, int2 dest, UnitMovementType umt, int range)
{
var tilesInRange = Game.FindTilesInCircle(dest, range)
.Where(t => Game.IsCellBuildable(t, umt))
.Select(t => t + map.Offset);
var path = FindUnitPath(tilesInRange, DefaultEstimator(dest), umt);
path.Reverse();
return path;
}
List<int2> FindUnitPath( int2 unitLocation, Func<int2,double> estimator, UnitMovementType umt )
{
var startLocation = unitLocation + map.Offset;
var cellInfo = new CellInfo[ 128, 128 ];
for( int x = 0 ; x < 128 ; x++ )
for( int y = 0 ; y < 128 ; y++ )
cellInfo[ x, y ] = new CellInfo( double.PositiveInfinity, new int2( x, y ), false );
return FindUnitPath( new[] {startLocation}, estimator, umt, map.Offset, cellInfo );
return FindUnitPath( new[] {startLocation}, estimator, umt );
}
List<int2> FindUnitPath(IEnumerable<int2> startLocations, Func<int2, double> estimator, UnitMovementType umt, int2 offset, CellInfo[,] cellInfo)
List<int2> FindUnitPath(IEnumerable<int2> startLocations, Func<int2, double> estimator, UnitMovementType umt)
{
var cellInfo = new CellInfo[128, 128];
var offset = map.Offset;
for (int x = 0; x < 128; x++)
for (int y = 0; y < 128; y++)
cellInfo[x, y] = new CellInfo(double.PositiveInfinity, new int2(x, y), false);
var queue = new PriorityQueue<PathDistance>();
foreach (var sl in startLocations)