109 lines
3.4 KiB
C#
109 lines
3.4 KiB
C#
using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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using System;
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namespace AlienAttack.MonoGame.Things.Enemies.Mines;
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public abstract class Mine : MoveableSprite
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{
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public const int Width = 65;
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public const int Height = 64;
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protected float Rotation = 0;
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protected abstract string CoverColor { get; }
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public Mine(int x, int y) : base(x, y)
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{
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Origin = new(30, 33);
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BoundBox = new(10, 14, 40, 38);
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YVelocity = 1;
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XVelocity = 0;
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}
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public override void Draw(SpriteDrawArgs args)
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{
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DrawRotor(args);
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DrawCover(args);
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//DrawCollisionBox(args);
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}
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private void DrawRotor(SpriteDrawArgs args)
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{
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Texture2D texture = args.Content.Load<Texture2D>("Sprites/Rotor");
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args.SpriteBatch.Draw(texture, Position, null, DrawColor, Rotation, Origin, 1f, SpriteEffects.None, 1);
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}
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private void DrawCover(SpriteDrawArgs args)
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{
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Texture2D texture = args.Content.Load<Texture2D>($"Sprites/Cover_{CoverColor}");
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args.SpriteBatch.Draw(texture, Position, null, DrawColor, Rotation, Origin, 1f, SpriteEffects.None, 1);
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}
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private void DrawCollisionBox(SpriteDrawArgs args)
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{
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//var pixel = DebugPixel; // static cached
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Texture2D pixel = new Texture2D(args.SpriteBatch.GraphicsDevice, 1, 1);
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pixel.SetData(new[] { Color.White });
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//Rectangle r = GetWorldCollisionBox();
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Color c = Color.LimeGreen; // debug color
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// Top
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args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.X, CollisionBox.Y, CollisionBox.Width, 1), c);
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// Bottom
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args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.X, CollisionBox.Bottom - 1, CollisionBox.Width, 1), c);
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// Left
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args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.X, CollisionBox.Y, 1, CollisionBox.Height), c);
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// Right
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args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.Right - 1, CollisionBox.Y, 1, CollisionBox.Height), c);
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}
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//Rectangle GetWorldCollisionBox()
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//{
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// int x = (int)(XPosition - Origin.X + BoundBox.X);
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// int y = (int)(YPosition - Origin.Y + BoundBox.Y);
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// return new Rectangle(x, y, BoundBox.Width, BoundBox.Height);
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//}
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public override sealed void Update(SpriteUpdateContext context)
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{
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base.Update(context);
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CollisionBox = new Rectangle((int)XPosition + BoundBox.X - (int)Origin.X, (int)YPosition + BoundBox.Y - (int)Origin.Y, BoundBox.Width, BoundBox.Height);
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float xDiff = (XPosition + Origin.X) - (context.Player.XPosition + context.Player.Origin.X);
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float yDiff = (YPosition + Origin.Y) - (context.Player.YPosition + context.Player.Origin.Y);
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double distance = Math.Sqrt(xDiff * xDiff + yDiff * yDiff);
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if (distance < 100)
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{
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IsDead = true;
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SpawnExplosion(context);
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return;
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}
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if (YPosition - Origin.Y > context.ViewTransform.ScreenHeight)
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{
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IsDead = true;
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return;
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}
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Rotation += 0.01f;
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if (Rotation > 360f)
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{
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Rotation = 0;
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}
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}
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private void SpawnExplosion(SpriteUpdateContext context)
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{
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context.SpawnSprite(new Explosion((int)XPosition, (int)YPosition, XVelocity, YVelocity));
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context.AudioManager.PlayExplosion();
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}
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} |