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space-invaders: remove hack whereby bitmap was stored in a variable

release
chris.double 2006-03-29 11:23:58 +00:00
parent 231be04a4c
commit e944e23ed5
1 changed files with 14 additions and 17 deletions
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31
contrib/space-invaders/space-invaders.factor
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@ -27,8 +27,6 @@ IN: space-invaders
TUPLE: space-invaders port1 port2i port2o port3o port4lo port4hi port5o bitmap ;
SYMBOL: bitmap
: dip ( x y quot -- y )
#! Showing my Joy roots...
swap >r call r> ; inline
@ -196,9 +194,9 @@ M: invaders-gadget draw-gadget* ( gadget -- )
dup HEX: 1f bitand 8 * 255 swap - ( n y )
swap -5 shift swap 2array ;
: plot-bitmap-pixel ( point color -- )
: plot-bitmap-pixel ( bitmap point color -- )
#! point is a {x y}. color is a {r g b}.
swap bitmap get set-bitmap-pixel ;
swap rot set-bitmap-pixel ;
: within ( n a b - bool )
#! n >= a and n <= b
@ -214,7 +212,7 @@ M: invaders-gadget draw-gadget* ( gadget -- )
{ [ t ] [ 2drop white ] }
} cond ;
: plot-bitmap-bits ( point byte bit -- )
: plot-bitmap-bits ( bitmap point byte bit -- )
#! point is a {x y}.
[ first2 ] dipd
dup swapd -1 * shift 1 bitand 0 =
@ -222,20 +220,20 @@ M: invaders-gadget draw-gadget* ( gadget -- )
[ black ] [ dup get-point-color ] if
plot-bitmap-pixel ;
: do-bitmap-update ( value addr -- )
addr>xy swap ( point value )
[ 0 plot-bitmap-bits ] 2keep
[ 1 plot-bitmap-bits ] 2keep
[ 2 plot-bitmap-bits ] 2keep
[ 3 plot-bitmap-bits ] 2keep
[ 4 plot-bitmap-bits ] 2keep
[ 5 plot-bitmap-bits ] 2keep
[ 6 plot-bitmap-bits ] 2keep
: do-bitmap-update ( bitmap value addr -- )
addr>xy swap
[ 0 plot-bitmap-bits ] 3keep
[ 1 plot-bitmap-bits ] 3keep
[ 2 plot-bitmap-bits ] 3keep
[ 3 plot-bitmap-bits ] 3keep
[ 4 plot-bitmap-bits ] 3keep
[ 5 plot-bitmap-bits ] 3keep
[ 6 plot-bitmap-bits ] 3keep
7 plot-bitmap-bits ;
M: space-invaders update-video ( value addr cpu -- )
over HEX: 2400 >= [
drop do-bitmap-update
space-invaders-bitmap -rot do-bitmap-update
] [
3drop
] if ;
@ -316,13 +314,12 @@ M: right-up-msg handle-invaders-message ( gadget message -- quit? )
#! signal key presses, etc.
[
[ sync-frame ] dip
dup invaders-gadget-cpu space-invaders-bitmap bitmap set
dup invaders-gadget-cpu gui-frame
dup relayout-1
] while-no-messages
dup receive handle-invaders-message [ invaders-process ] unless ;
: run ( -- )
: run ( -- process )
<space-invaders> "invaders.rom" over load-rom
<invaders-gadget> [ set-invaders-gadget-cpu ] keep
dup "Space Invaders" open-window