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Discourage harvesters from wandering too far from the refinery.

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This commit is contained in:
Paul Chote
2019-08-18 15:13:26 +00:00
committed by teinarss
parent 7e4da8ea2c
commit ab94ea9715
2 changed files with 29 additions and 1 deletions
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27
OpenRA.Mods.Common/Activities/FindAndDeliverResources.cs
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@@ -9,6 +9,7 @@
*/
#endregion
using System;
using System.Collections.Generic;
using OpenRA.Activities;
using OpenRA.Mods.Common.Pathfinder;
@@ -175,7 +176,8 @@ namespace OpenRA.Mods.Common.Activities
}
// Determine where to search from and how far to search:
var searchFromLoc = lastHarvestedCell ?? GetSearchFromProcLocation(self);
var procLoc = GetSearchFromProcLocation(self);
var searchFromLoc = lastHarvestedCell ?? procLoc;
var searchRadius = lastHarvestedCell.HasValue ? harvInfo.SearchFromHarvesterRadius : harvInfo.SearchFromProcRadius;
if (!searchFromLoc.HasValue)
{
@@ -185,6 +187,9 @@ namespace OpenRA.Mods.Common.Activities
var searchRadiusSquared = searchRadius * searchRadius;
var procPos = procLoc.HasValue ? (WPos?)self.World.Map.CenterOfCell(procLoc.Value) : null;
var harvPos = self.CenterPosition;
// Find any harvestable resources:
List<CPos> path;
using (var search = PathSearch.Search(self.World, mobile.Locomotor, self, true, loc =>
@@ -194,6 +199,26 @@ namespace OpenRA.Mods.Common.Activities
if ((loc - searchFromLoc.Value).LengthSquared > searchRadiusSquared)
return int.MaxValue;
// Add a cost modifier to harvestable cells to prefer resources that are closer to the refinery.
// This reduces the tendancy for harvesters to move in straight lines
if (procPos.HasValue && harvInfo.ResourceRefineryDirectionPenalty > 0 && harv.CanHarvestCell(self, loc))
{
var pos = self.World.Map.CenterOfCell(loc);
// Calculate harv-cell-refinery angle (cosine rule)
var aSq = (harvPos - procPos.Value).LengthSquared;
var bSq = (pos - procPos.Value).LengthSquared;
var cSq = (pos - harvPos).LengthSquared;
if (bSq > 0 && cSq > 0)
{
var cosA = (int)(1024 * (bSq + cSq - aSq) / (2 * Exts.ISqrt(bSq * cSq)));
// Cost modifier varies between 0 and ResourceRefineryDirectionPenalty
return Math.Abs(harvInfo.ResourceRefineryDirectionPenalty / 2) + harvInfo.ResourceRefineryDirectionPenalty * cosA / 2048;
}
}
return 0;
})
.FromPoint(searchFromLoc.Value)