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feat: Adds Map.GetXByDistance (for tracking skill). Fixes negative range checks. (#2252)

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### Summary

Adds `XInRangeByDistance` and `XInBoundsByDistance` methods to `Map.cs`:

**Item Distance Enumeration:**
```cs
ItemDistanceEnumerable<Item> GetItemsInRangeByDistance(Point3D p);
ItemDistanceEnumerable<Item> GetItemsInRangeByDistance(Point3D p, int range);
ItemDistanceEnumerable<T> GetItemsInRangeByDistance<T>(Point3D p) where T : Item;
ItemDistanceEnumerable<T> GetItemsInRangeByDistance<T>(Point3D p, int range) where T : Item;
ItemDistanceEnumerable<Item> GetItemsInRangeByDistance(Point2D p);
ItemDistanceEnumerable<Item> GetItemsInRangeByDistance(Point2D p, int range);
ItemDistanceEnumerable<T> GetItemsInRangeByDistance<T>(Point2D p) where T : Item;
ItemDistanceEnumerable<T> GetItemsInRangeByDistance<T>(Point2D p, int range) where T : Item;
ItemDistanceEnumerable<Item> GetItemsInRangeByDistance(int x, int y, int range);
ItemDistanceEnumerable<T> GetItemsInRangeByDistance<T>(int x, int y, int range) where T : Item;
ItemDistanceEnumerable<Item> GetItemsInBoundsByDistance(Rectangle2D bounds, , bool makeBoundsInclusive = false);
ItemDistanceEnumerable<T> GetItemsInBoundsByDistance<T>(Rectangle2D bounds, bool makeBoundsInclusive = false) where T : Item;
```

**Mobile Distance Enumeration:**
```cs
MobileDistanceEnumerable<Mobile> GetMobilesInRangeByDistance(Point3D p);
MobileDistanceEnumerable<Mobile> GetMobilesInRangeByDistance(Point3D p, int range);
MobileDistanceEnumerable<T> GetMobilesInRangeByDistance<T>(Point3D p) where T : Mobile;
MobileDistanceEnumerable<T> GetMobilesInRangeByDistance<T>(Point3D p, int range) where T : Mobile;
MobileDistanceEnumerable<Mobile> GetMobilesInRangeByDistance(Point2D p);
MobileDistanceEnumerable<Mobile> GetMobilesInRangeByDistance(Point2D p, int range);
MobileDistanceEnumerable<T> GetMobilesInRangeByDistance<T>(Point2D p) where T : Mobile;
MobileDistanceEnumerable<T> GetMobilesInRangeByDistance<T>(Point2D p, int range) where T : Mobile;
MobileDistanceEnumerable<Mobile> GetMobilesInRangeByDistance(int x, int y, int range);
MobileDistanceEnumerable<T> GetMobilesInRangeByDistance<T>(int x, int y, int range) where T : Mobile;
MobileDistanceEnumerable<Mobile> GetMobilesInBoundsByDistance(Rectangle2D bounds, bool makeBoundsInclusive = false);
MobileDistanceEnumerable<T> GetMobilesInBoundsByDistance<T>(Rectangle2D bounds, bool makeBoundsInclusive = false) where T : Mobile;
```

**Client Distance Enumeration:**
```cs
ClientDistanceEnumerable GetClientsInRangeByDistance(Point3D p);
ClientDistanceEnumerable GetClientsInRangeByDistance(Point3D p, int range);
ClientDistanceEnumerable GetClientsInRangeByDistance(Point2D p);
ClientDistanceEnumerable GetClientsInRangeByDistance(Point2D p, int range);
ClientDistanceEnumerable GetClientsInRangeByDistance(int x, int y, int range);
ClientDistanceEnumerable GetClientsInBoundsByDistance(Rectangle2D bounds, bool makeBoundsInclusive = false);
```

**Example Usage:**

How to use `minDistance` to terminate early when all subsequent mobiles in the iteration will be at an increasing min distance.

```csharp
var playerLocation = player.Location;
const int maxRange = 100;
const int maxMobiles = 12;

var closestMobiles = new SortedSet<Mobile>(Comparer<Mobile>.Create((x, y) =>
{
    var distX = x.GetDistanceToSqrt(playerLocation);
    var distY = y.GetDistanceToSqrt(playerLocation);

    int result = distX.CompareTo(distY);
    if (result == 0)
    {
        result = (x?.Serial ?? Serial.MinusOne).CompareTo(y?.Serial ?? Serial.MinusOne);
    }
    return result;
}));

int lastMinDistance = 0;

foreach (var (mobile, minDistance) in map.GetMobilesInRangeByDistance(playerLocation, maxRange))
{
    // Stop if we have enough and distance starts increasing
    if (closestMobiles.Count >= maxMobiles && minDistance > lastMinDistance)
    {
        break;
    }

    closestMobiles.Add(mobile);
    lastMinDistance = minDistance;
}

// Results are already ordered by proximity
foreach (var mobile in closestMobiles)
{
    var actualDistance = mobile.GetDistanceToSqrt(playerLocation);
    Console.WriteLine($"{mobile.Name}: ActualDist={actualDistance:F2}");
}
```
This commit is contained in:
Kamron Batman 2025-11-28 10:57:54 -08:00 • committed by GitHub
parent d3fdb180b3
commit f2ce860c18
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13 changed files with 2415 additions and 12 deletions
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11
Projects/Server/Maps/Map.ClientEnumerator.cs
View file

@ -46,8 +46,12 @@ public partial class Map
GetClientsInRange(p.m_X, p.m_Y, range);
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public ClientBoundsEnumerable GetClientsInRange(int x, int y, int range) =>
GetClientsInBounds(new Rectangle2D(x - range, y - range, range * 2 + 1, range * 2 + 1));
public ClientBoundsEnumerable GetClientsInRange(int x, int y, int range)
{
var clampedRange = Math.Max(0, range);
var edge = clampedRange * 2 + 1;
return GetClientsInBounds(new Rectangle2D(x - clampedRange, y - clampedRange, edge, edge));
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public ClientBoundsEnumerable GetClientsInBounds(Rectangle2D bounds, bool makeBoundsInclusive = false) =>
@ -232,7 +236,6 @@ public partial class Map
throw new InvalidOperationException(CollectionThrowStrings.InvalidOperation_EnumFailedVersion);
}
Mobile m;
NetState current = _current;
ref Rectangle2D bounds = ref _bounds;
var currentSectorX = _currentSectorX;
@ -267,7 +270,7 @@ public partial class Map
current = _linkList._first;
}
m = current.Mobile;
var m = current.Mobile;
if (m?.Deleted == false && bounds.Contains(m.Location))
{
_current = current;