simplify DrawTanksStep

This commit is contained in:
Vinzenz Schroeter 2024-04-22 20:14:46 +02:00
parent 7bc45d1d58
commit 83ee185c50

View file

@ -4,31 +4,13 @@ using TanksServer.GameLogic;
namespace TanksServer.Graphics;
internal sealed class DrawTanksStep : IDrawStep
internal sealed class DrawTanksStep(MapEntityManager entityManager) : IDrawStep
{
private readonly MapEntityManager _entityManager;
private readonly bool[] _tankSprite;
private readonly int _tankSpriteWidth;
public DrawTanksStep(MapEntityManager entityManager)
{
_entityManager = entityManager;
using var tankImage = Image.Load<Rgba32>("assets/tank.png");
_tankSprite = new bool[tankImage.Height * tankImage.Width];
var whitePixel = new Rgba32(byte.MaxValue, byte.MaxValue, byte.MaxValue, byte.MaxValue);
var i = 0;
for (var y = 0; y < tankImage.Height; y++)
for (var x = 0; x < tankImage.Width; x++, i++)
_tankSprite[i] = tankImage[x, y] == whitePixel;
_tankSpriteWidth = tankImage.Width;
}
private readonly bool[,] _tankSprite = LoadTankSprite();
public void Draw(GamePixelGrid pixels)
{
foreach (var tank in _entityManager.Tanks)
foreach (var tank in entityManager.Tanks)
{
var tankPosition = tank.Bounds.TopLeft;
@ -49,8 +31,21 @@ internal sealed class DrawTanksStep : IDrawStep
{
var x = tankRotation % 4 * (MapService.TileSize + 1);
var y = (int)Math.Floor(tankRotation / 4d) * (MapService.TileSize + 1);
var index = (y + dy) * _tankSpriteWidth + x + dx;
return _tankSprite[index];
return _tankSprite[x + dx, y + dy];
}
private static bool[,] LoadTankSprite()
{
using var tankImage = Image.Load<Rgba32>("assets/tank.png");
var tankSprite = new bool[tankImage.Width, tankImage.Height];
var whitePixel = new Rgba32(byte.MaxValue, byte.MaxValue, byte.MaxValue, byte.MaxValue);
for (var y = 0; y < tankImage.Height; y++)
for (var x = 0; x < tankImage.Width; x++)
tankSprite[x, y] = tankImage[x, y] == whitePixel;
return tankSprite;
}
}