Im working on a idle game, the idea is, each click do 1 damage for example, the stone(Pedra) have 10 of life, when his life reaches 0 he will explode, the system will start the fade again and will create a new Object, the arrow(setaDireitaPedraCarvão). When I click the arrow, all collisions with the stone(Pedra) and his visibility becomes off and another ore appears, the coal(Carvão). And the coal have to follow the same rules that stone have. Be clicked until explode and appear again. Each ore/stone gives money when they explode.
But, i don't know why, it doesn't happen. The coal still gives money, but he is invisible, and I don't want this to happen.
What I want to know is why this coal(Carvão) don't fade-in like the stone(Pedra)