Plants v Zombies should be banned from developers hard drives. Far too addictive :o

Usually I've been able to resist Tower Defense clones but this one gives me the shakes when I'm away from it for too long. I will have to beat it in order to free its hold on me.

I'm glad to hear you had a productive weekend. Mine was sorely, well, not. [grin] What kind of difficulties are you having with implementing decals?

The big problem is clipping; because it's a top-down perspective any kind of intersection with the wall is not appropriate. This makes the logic for floor-mounted decals very complicated, and I haven't yet worked out a good system other than painstakingly figuring out coordinates based on the walls or using a stencil buffer trick of some kind.

Shaders is another idea I had, but I'm not quite sure how to implement decal splatting in a shader. It will need a bit of forethought.