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7 "b_nblocks" store
15 23 71 51 54 99 114
b_nblocks mkarrayp "b_blocks" store
6 3 4 7 2 1 5
b_nblocks mkarrayp "b_blockclrs" store
@defun "b_getblock" { #arg: block idx [0..(b_nblocks-1)]
"b_blocks" swapoutvar swap arridx swap "b_blocks" gstore
}
@defun "b_drawblock" { #args: x y blockidx
dup "blockidx" store
b_getblock "blockbits" store
"y" store
"x" store
blockbits 16 % "row1" store
blockbits 16 / "row2" store
x "xx" store
row1 while
row1 2 % if
xx y blockidx io_gsquare
end
xx 1 + "xx" store
row1 2 / "row1" store
row1 end
y 1 + "y" store
x "xx" store
row2 while
row2 2 % if
xx y blockidx io_gsquare
end
xx 1 + "xx" store
row2 2 / "row2" store
row2 end
}
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