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module m_piece
implicit none
type piece
integer, dimension(0:3, 0:3)::blocks
integer::r, c
end type piece
contains
function new_piece()
use m_constants
implicit none
type(piece)::new_piece
real::r
integer::rint
new_piece%r = ROWS-1
new_piece%c = COLUMNS/2-2
call random_number(r)
rint = floor(r*7)
new_piece%blocks = 0
select case (rint)
case (0)
new_piece%blocks(1:2,1:2) = 1
case (1)
new_piece%blocks(:,2) = 1
case (2)
new_piece%blocks(2,1:3) = 1
new_piece%blocks(1,2) = 1
case (3)
new_piece%blocks(1,2:3) = 1
new_piece%blocks(2,1:2) = 1
case (4)
new_piece%blocks(2,2:3) = 1
new_piece%blocks(1,1:2) = 1
case (5)
new_piece%blocks(0:2,1) = 1
new_piece%blocks(2,2) = 1
case (6)
new_piece%blocks(0:2,2) = 1
new_piece%blocks(2,1) = 1
end select
end function
end module m_piece
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