Question

I’m attempting to determine which sprite a mouse is over in an isometric 2D game. I think my best bet is to draw each sprite a different color into a separate renderTarget2D and turn it into a Texture2D at which point I can get the color data from the mouse point and check it against the drawn sprites.

The problem I’m having with that method though is that I can’t change the color of the individual sprites to a solid color. If I change the Color in the spriteBatch.Draw call, it only tints the color of the sprite rather than drawing it at a solid color so the data I retrieve from the Texture doesn’t help.

Any suggestions or help with drawing those sprites in a solid color?

Answer 1

Don’t do it that way. Creating a new render target and copying the data into the memory even for a mere hundred sprites sixty times per sec is far beyond what current systems can handle.

Simply use the Contains method of the Rectangle structure:

var destination = new Rectangle(100, 100, 50, 50);
bool mouseOver = destination.Contains(mouseX, mouseY);