Agregado paredGlobal
Revert "Agregado paredGlobal"

This reverts commit 49f35e04f83d129cb58bef9561710c623c4f7b5b.
Revert "Agregado objeto Bomber"

This reverts commit 46d243fd7f8be5856c4e3d9f2eb3d3ba0d586dd2.