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Add some world-coordinate helpers.

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This commit is contained in:
Paul Chote
2013-07-20 13:06:13 +12:00
parent 8751d29a9a
commit 1dfc4837d4
3 changed files with 27 additions and 1 deletions
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3
OpenRA.FileFormats/WRange.cs
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@@ -27,6 +27,9 @@ namespace OpenRA
public static WRange operator +(WRange a, WRange b) { return new WRange(a.Range + b.Range); } public static WRange operator +(WRange a, WRange b) { return new WRange(a.Range + b.Range); }
public static WRange operator -(WRange a, WRange b) { return new WRange(a.Range - b.Range); } public static WRange operator -(WRange a, WRange b) { return new WRange(a.Range - b.Range); }
public static WRange operator -(WRange a) { return new WRange(-a.Range); } public static WRange operator -(WRange a) { return new WRange(-a.Range); }
public static WRange operator /(WRange a, int b) { return new WRange(a.Range / b); }
public static WRange operator *(WRange a, int b) { return new WRange(a.Range * b); }
public static WRange operator *(int a, WRange b) { return new WRange(a * b.Range); }
public static bool operator ==(WRange me, WRange other) { return (me.Range == other.Range); } public static bool operator ==(WRange me, WRange other) { return (me.Range == other.Range); }
public static bool operator !=(WRange me, WRange other) { return !(me == other); } public static bool operator !=(WRange me, WRange other) { return !(me == other); }

2
OpenRA.Game/CPos.cs
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@@ -42,6 +42,8 @@ namespace OpenRA
public PPos ToPPos() { return new PPos(Game.CellSize * X, Game.CellSize * Y); } public PPos ToPPos() { return new PPos(Game.CellSize * X, Game.CellSize * Y); }
public WPos CenterPosition { get { return new WPos(1024 * X + 512, 1024 * Y + 512, 0); } } public WPos CenterPosition { get { return new WPos(1024 * X + 512, 1024 * Y + 512, 0); } }
public WPos TopLeft { get { return new WPos(1024 * X, 1024 * Y, 0); } }
public WPos BottomRight { get { return new WPos(1024 * X + 1023, 1024 * Y + 1023, 0); } }
public CPos Clamp(Rectangle r) public CPos Clamp(Rectangle r)
{ {

21
OpenRA.Game/WorldUtils.cs
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@@ -27,6 +27,16 @@ namespace OpenRA
return FindUnits(world, loc, loc).Where(a => !world.FogObscures(a)); return FindUnits(world, loc, loc).Where(a => !world.FogObscures(a));
} }
public static IEnumerable<Actor> FindUnits(this World world, CPos tl, CPos br)
{
return world.FindUnits(tl.TopLeft, br.BottomRight);
}
public static IEnumerable<Actor> FindUnits(this World world, WPos tl, WPos br)
{
return world.FindUnits(PPos.FromWPos(tl), PPos.FromWPos(br));
}
public static IEnumerable<Actor> FindUnits(this World world, PPos a, PPos b) public static IEnumerable<Actor> FindUnits(this World world, PPos a, PPos b)
{ {
var u = PPos.Min(a, b); var u = PPos.Min(a, b);
@@ -34,6 +44,17 @@ namespace OpenRA
return world.WorldActor.Trait<SpatialBins>().ActorsInBox(u,v); return world.WorldActor.Trait<SpatialBins>().ActorsInBox(u,v);
} }
public static Actor ClosestTo(this IEnumerable<Actor> actors, Actor a)
{
var pos = a.CenterPosition;
return actors.OrderBy(b => (b.CenterPosition - pos).LengthSquared).FirstOrDefault();
}
public static Actor ClosestTo(this IEnumerable<Actor> actors, WPos pos)
{
return actors.OrderBy(a => (a.CenterPosition - pos).LengthSquared).FirstOrDefault();
}
public static Actor ClosestTo(this IEnumerable<Actor> actors, PPos px) public static Actor ClosestTo(this IEnumerable<Actor> actors, PPos px)
{ {
return actors.OrderBy( a => (a.CenterLocation - px).LengthSquared ).FirstOrDefault(); return actors.OrderBy( a => (a.CenterLocation - px).LengthSquared ).FirstOrDefault();