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Added texture cache and sprite origins.

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This commit is contained in:
Brian Bicknell
2026-01-14 23:09:13 -05:00
parent fcb4f1cf05
commit 61d51f5188
36 changed files with 319 additions and 83 deletions
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26
AlientAttack.MonoGame/Things/Sprite.cs
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@@ -8,6 +8,7 @@ public class Sprite(float x, float y)
public float XPosition { get; protected set; } = x;
public float YPosition { get; protected set; } = y;
public Vector2 Position => new(XPosition, YPosition);
public Vector2 Origin { get; protected set; }
public Rectangle BoundBox { get; protected set; }
protected Rectangle CollisionBox;
@@ -18,7 +19,8 @@ public class Sprite(float x, float y)
public virtual void Update(SpriteUpdateContext context)
{
CollisionBox = new Rectangle((int)XPosition + BoundBox.X, (int)YPosition + BoundBox.Y, BoundBox.Width, BoundBox.Height);
//CollisionBox = new Rectangle((int)XPosition + BoundBox.X, (int)YPosition + BoundBox.Y, BoundBox.Width, BoundBox.Height);
CollisionBox = new Rectangle((int)(Position.X - Origin.X) + BoundBox.X, (int)(Position.Y - Origin.Y) + BoundBox.Y, BoundBox.Width, BoundBox.Height);
}
public bool Intersects(Sprite sprite)
@@ -29,6 +31,28 @@ public class Sprite(float x, float y)
public virtual void Draw(SpriteDrawArgs args)
{
//spriteBatch.Draw(Texture, Position, DrawColor);
DrawCollisionBox(args);
}
private void DrawCollisionBox(SpriteDrawArgs args)
{
//var pixel = DebugPixel; // static cached
Texture2D pixel = new Texture2D(args.SpriteBatch.GraphicsDevice, 1, 1);
pixel.SetData(new[] { Color.White });
//Rectangle r = GetWorldCollisionBox();
Color c = Color.LimeGreen; // debug color
// Top
args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.X, CollisionBox.Y, CollisionBox.Width, 1), c);
// Bottom
args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.X, CollisionBox.Bottom - 1, CollisionBox.Width, 1), c);
// Left
args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.X, CollisionBox.Y, 1, CollisionBox.Height), c);
// Right
args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.Right - 1, CollisionBox.Y, 1, CollisionBox.Height), c);
}
public virtual void OnCollision(SpriteCollisionContext context)