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Interactable: allow specifying arbitrary 2D polygon for mouse interaction.

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This commit is contained in:
michaeldgg2
2024-09-07 21:35:01 +02:00
committed by abcdefg30
parent 833e6bd652
commit 96235654f1
1 changed files with 32 additions and 0 deletions
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32
OpenRA.Mods.Common/Traits/Interactable.cs
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@@ -29,17 +29,31 @@ namespace OpenRA.Mods.Common.Traits
"If null, Bounds will be used instead")]
public readonly WDist[] DecorationBounds = null;
[Desc("Defines a custom 2D polygon for mouse interaction with the actor.",
"If null, Bounds will be used instead",
"Each vertex has two components (so two numbers), which define an x and y offset from the actor center.")]
public readonly int2[] Polygon = null;
public override object Create(ActorInitializer init) { return new Interactable(this); }
}
public class Interactable : INotifyCreated, IMouseBounds
{
readonly InteractableInfo info;
readonly int2 polygonCenterOffset;
IAutoMouseBounds[] autoBounds;
public Interactable(InteractableInfo info)
{
this.info = info;
if (info.Polygon != null)
{
var rect = new Polygon(info.Polygon).BoundingRect;
// Precalculate offset for centering the polygon over the actor
polygonCenterOffset = new int2(-rect.Width / 2, -rect.Height / 2);
}
}
void INotifyCreated.Created(Actor self)
@@ -52,6 +66,21 @@ namespace OpenRA.Mods.Common.Traits
return autoBounds.Select(s => s.AutoMouseoverBounds(self, wr)).FirstOrDefault(r => !r.IsEmpty);
}
int2[] PolygonBounds(Actor self, WorldRenderer wr)
{
var screenVertices = new int2[info.Polygon.Length];
for (var i = 0; i < info.Polygon.Length; i++)
{
var vec = info.Polygon[i] + polygonCenterOffset;
var offset = new int2(vec.X * wr.TileSize.Width / wr.TileScale, vec.Y * wr.TileSize.Height / wr.TileScale);
screenVertices[i] = wr.ScreenPxPosition(self.CenterPosition) + offset;
}
return screenVertices;
}
Polygon Bounds(Actor self, WorldRenderer wr, WDist[] bounds)
{
if (bounds == null)
@@ -70,6 +99,9 @@ namespace OpenRA.Mods.Common.Traits
Polygon IMouseBounds.MouseoverBounds(Actor self, WorldRenderer wr)
{
if (info.Polygon != null)
return new Polygon(PolygonBounds(self, wr));
return Bounds(self, wr, info.Bounds);
}