#tworzymy w narożnikach areny diamentowe pola potrzebne dla bloku beacon, aby ten mógł wypuścić wiązkę światła
    blocks.fill(DIAMOND_BLOCK, world(x,y+4,z),world(x+2,y+4,z+2))
    blocks.fill(DIAMOND_BLOCK, world(x+38,y+4,z),world(x+40,y+4,z+2))
    blocks.fill(DIAMOND_BLOCK, world(x,y+4,z+38),world(x+2,y+4,z+40))
    blocks.fill(DIAMOND_BLOCK, world(x+38,y+4,z+38),world(x+40,y+4,z+40))

    #dodajemy bloki beacon
    blocks.place(BEACON, world(x+1,y+5,z+1))
    blocks.place(BEACON, world(x+39,y+5,z+1))
    blocks.place(BEACON, world(x+1,y+5,z+39))
    blocks.place(BEACON, world(x+39,y+5,z+39))