aa121dcb2f
Use the covariant return type feature of C# 9 to allow method overrides to be more specific about their return type. By exposing this information, e.g. for Widget.Clone(), callers will have more information. This allows various casts to be removed as the information is now available within the type system.
83 lines
2.0 KiB
C#
83 lines
2.0 KiB
C#
#region Copyright & License Information
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/*
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* Copyright (c) The OpenRA Developers and Contributors
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version. For more
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* information, see COPYING.
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*/
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#endregion
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using System;
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using OpenRA.Graphics;
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using OpenRA.Widgets;
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namespace OpenRA.Mods.Common.Widgets
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{
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public class SpriteWidget : Widget
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{
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public float Scale = 1f;
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public Func<float> GetScale;
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public string Palette = "chrome";
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public Func<string> GetPalette;
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public Func<Sprite> GetSprite;
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protected readonly WorldRenderer WorldRenderer;
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[ObjectCreator.UseCtor]
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public SpriteWidget(WorldRenderer worldRenderer)
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{
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GetPalette = () => Palette;
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GetScale = () => Scale;
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WorldRenderer = worldRenderer;
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}
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protected SpriteWidget(SpriteWidget other)
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: base(other)
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{
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Palette = other.Palette;
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GetPalette = other.GetPalette;
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GetSprite = other.GetSprite;
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WorldRenderer = other.WorldRenderer;
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}
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public override SpriteWidget Clone() { return new SpriteWidget(this); }
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Sprite cachedSprite = null;
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string cachedPalette = null;
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float cachedScale;
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PaletteReference pr;
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float2 offset = float2.Zero;
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public override void Draw()
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{
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var sprite = GetSprite();
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var palette = GetPalette();
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var scale = GetScale();
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if (sprite == null || palette == null)
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return;
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if (sprite != cachedSprite || scale != cachedScale)
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{
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offset = 0.5f * (new float2(RenderBounds.Size) - scale * sprite.Size.XY);
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cachedSprite = sprite;
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cachedScale = scale;
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}
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if (palette != cachedPalette)
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{
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pr = WorldRenderer.Palette(palette);
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cachedPalette = palette;
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}
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Game.Renderer.EnableAntialiasingFilter();
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Game.Renderer.SpriteRenderer.DrawSprite(sprite, pr, RenderOrigin + offset, scale);
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Game.Renderer.DisableAntialiasingFilter();
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}
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}
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}
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