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Add ISpriteSequence.Bounds and Animation(WithOffset).ScreenBounds.

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The bounds define the smallest Rectangle that covers all frames within a sequence.
This commit is contained in:
Paul Chote
2017-12-05 16:26:44 +00:00
committed by reaperrr
parent 85c5259361
commit 041431d966
4 changed files with 53 additions and 1 deletions
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30
OpenRA.Mods.Common/Graphics/DefaultSpriteSequence.cs
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@@ -90,6 +90,7 @@ namespace OpenRA.Mods.Common.Graphics
public int ShadowStart { get; private set; }
public int ShadowZOffset { get; private set; }
public int[] Frames { get; private set; }
public Rectangle Bounds { get; private set; }
protected virtual string GetSpriteSrc(ModData modData, TileSet tileSet, string sequence, string animation, string sprite, Dictionary<string, MiniYaml> d)
{
@@ -270,6 +271,17 @@ namespace OpenRA.Mods.Common.Graphics
"{5}: Sequence {0}.{1}'s shadow frames use frames [{2}..{3}], but only [0..{4}] actually exist"
.F(sequence, animation, ShadowStart, ShadowStart + Facings * Stride - 1, sprites.Length - 1,
info.Nodes[0].Location));
var boundSprites = SpriteBounds(sprites, Frames, Start, Facings, Length);
if (ShadowStart > 0)
boundSprites = boundSprites.Concat(SpriteBounds(sprites, Frames, ShadowStart, Facings, Length));
if (boundSprites.Any())
{
Bounds = boundSprites.First();
foreach (var b in boundSprites.Skip(1))
Bounds = Rectangle.Union(Bounds, b);
}
}
catch (FormatException f)
{
@@ -277,6 +289,24 @@ namespace OpenRA.Mods.Common.Graphics
}
}
/// <summary>Returns the bounds of all of the sprites that can appear in this animation</summary>
static IEnumerable<Rectangle> SpriteBounds(Sprite[] sprites, int[] frames, int start, int facings, int length)
{
for (var facing = 0; facing < facings; facing++)
{
for (var frame = 0; frame < length; frame++)
{
var i = frame * facings + facing;
var s = frames != null ? sprites[frames[i]] : sprites[start + i];
if (!s.Bounds.IsEmpty)
yield return new Rectangle(
(int)(s.Offset.X - s.Size.X / 2),
(int)(s.Offset.Y - s.Size.Y / 2),
s.Bounds.Width, s.Bounds.Height);
}
}
}
public Sprite GetSprite(int frame)
{
return GetSprite(Start, frame, 0);