53 lines
1.7 KiB
C#
53 lines
1.7 KiB
C#
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using System.Diagnostics;
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using SixLabors.ImageSharp;
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using SixLabors.ImageSharp.PixelFormats;
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using TanksServer.GameLogic;
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namespace TanksServer.Graphics;
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internal sealed class DrawPowerUpsStep : IDrawStep
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{
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private readonly MapEntityManager _entityManager;
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private readonly bool?[,] _explosiveSprite;
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public DrawPowerUpsStep(MapEntityManager entityManager)
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{
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_entityManager = entityManager;
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using var tankImage = Image.Load<Rgba32>("assets/powerup_explosive.png");
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Debug.Assert(tankImage.Width == tankImage.Height && tankImage.Width == MapService.TileSize);
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_explosiveSprite = new bool?[tankImage.Width, tankImage.Height];
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var whitePixel = new Rgba32(byte.MaxValue, byte.MaxValue, byte.MaxValue, byte.MaxValue);
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for (var y = 0; y < tankImage.Height; y++)
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for (var x = 0; x < tankImage.Width; x++)
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{
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var pixelValue = tankImage[x, y];
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_explosiveSprite[x, y] = pixelValue.A == 0
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? null
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: pixelValue == whitePixel;
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}
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}
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public void Draw(GamePixelGrid pixels)
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{
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foreach (var powerUp in _entityManager.PowerUps)
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{
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var position = powerUp.Bounds.TopLeft;
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for (byte dy = 0; dy < MapService.TileSize; dy++)
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for (byte dx = 0; dx < MapService.TileSize; dx++)
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{
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var pixelState = _explosiveSprite[dx, dy];
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if (!pixelState.HasValue)
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continue;
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var (x, y) = position.GetPixelRelative(dx, dy);
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pixels[x, y].EntityType = pixelState.Value
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? GamePixelEntityType.PowerUp
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: null;
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}
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}
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}
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}
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