Not only have I fixed the evil bugs with the evil pixels, you can now kill them. After debugging what has been the second problem caused by using a variable never initialised, but just pretended:

Foo::Foo(int pretend){

}

Foo::something(){

pretend / 10

}

But they’re gone now. It’s occurred to me that I may need some sort of extra dimension to the game, as basically you walk, press arrow keys and kill pixels. Also, there is no UI, which may hinder players somewhat,

Goodbye!