factor/extra/space-invaders/space-invaders.factor

403 lines
11 KiB
Factor
Executable File

! Copyright (C) 2006 Chris Double.
! See http://factorcode.org/license.txt for BSD license.
!
USING:
accessors
alien.c-types
alien.data
arrays
byte-arrays
calendar
combinators
cpu.8080
cpu.8080.emulator
io.files
io.pathnames
kernel
locals
math
math.order
openal
openal.alut
opengl.gl
sequences
ui
ui.gadgets
ui.gestures
ui.render
specialized-arrays
;
QUALIFIED: threads
QUALIFIED: system
SPECIALIZED-ARRAY: uchar
IN: space-invaders
TUPLE: space-invaders < cpu port1 port2i port2o port3o port4lo port4hi port5o bitmap sounds looping? ;
CONSTANT: game-width 224
CONSTANT: game-height 256
: make-opengl-bitmap ( -- array )
game-height game-width 3 * * uchar <c-array> ;
: bitmap-index ( point -- index )
#! Point is a {x y}.
first2 game-width 3 * * swap 3 * + ;
:: set-bitmap-pixel ( bitmap point color -- )
point bitmap-index :> index
color first index bitmap set-nth
color second index 1 + bitmap set-nth
color third index 2 + bitmap set-nth ;
: get-bitmap-pixel ( point array -- color )
#! Point is a {x y}. color is a {r g b}
[ bitmap-index ] dip
[ nth ] 2keep
[ [ 1 + ] dip nth ] 2keep
[ 2 + ] dip nth 3array ;
CONSTANT: SOUND-SHOT 0
CONSTANT: SOUND-UFO 1
CONSTANT: SOUND-BASE-HIT 2
CONSTANT: SOUND-INVADER-HIT 3
CONSTANT: SOUND-WALK1 4
CONSTANT: SOUND-WALK2 5
CONSTANT: SOUND-WALK3 6
CONSTANT: SOUND-WALK4 7
CONSTANT: SOUND-UFO-HIT 8
: init-sound ( index cpu filename -- )
absolute-path swapd [ sounds>> nth AL_BUFFER ] dip
create-buffer-from-wav set-source-param ;
: init-sounds ( cpu -- )
init-openal
[ 9 gen-sources swap sounds<< ] keep
[ SOUND-SHOT "vocab:space-invaders/resources/Shot.wav" init-sound ] keep
[ SOUND-UFO "vocab:space-invaders/resources/Ufo.wav" init-sound ] keep
[ sounds>> SOUND-UFO swap nth AL_LOOPING AL_TRUE set-source-param ] keep
[ SOUND-BASE-HIT "vocab:space-invaders/resources/BaseHit.wav" init-sound ] keep
[ SOUND-INVADER-HIT "vocab:space-invaders/resources/InvHit.Wav" init-sound ] keep
[ SOUND-WALK1 "vocab:space-invaders/resources/Walk1.wav" init-sound ] keep
[ SOUND-WALK2 "vocab:space-invaders/resources/Walk2.wav" init-sound ] keep
[ SOUND-WALK3 "vocab:space-invaders/resources/Walk3.wav" init-sound ] keep
[ SOUND-WALK4 "vocab:space-invaders/resources/Walk4.wav" init-sound ] keep
[ SOUND-UFO-HIT "vocab:space-invaders/resources/UfoHit.wav" init-sound ] keep
f swap looping?<< ;
: cpu-init ( cpu -- cpu )
make-opengl-bitmap over bitmap<<
[ init-sounds ] keep
[ reset ] keep ;
: <space-invaders> ( -- cpu )
space-invaders new cpu-init ;
: play-invaders-sound ( cpu sound -- )
swap sounds>> nth source-play ;
: stop-invaders-sound ( cpu sound -- )
swap sounds>> nth source-stop ;
: read-port1 ( cpu -- byte )
#! Port 1 maps the keys for space invaders
#! Bit 0 = coin slot
#! Bit 1 = two players button
#! Bit 2 = one player button
#! Bit 4 = player one fire
#! Bit 5 = player one left
#! Bit 6 = player one right
[ port1>> dup HEX: FE bitand ] keep
port1<< ;
: read-port2 ( cpu -- byte )
#! Port 2 maps player 2 controls and dip switches
#! Bit 0,1 = number of ships
#! Bit 2 = mode (1=easy, 0=hard)
#! Bit 4 = player two fire
#! Bit 5 = player two left
#! Bit 6 = player two right
#! Bit 7 = show or hide coin info
[ port2i>> HEX: 8F bitand ] keep
port1>> HEX: 70 bitand bitor ;
: read-port3 ( cpu -- byte )
#! Used to compute a special formula
[ port4hi>> 8 shift ] keep
[ port4lo>> bitor ] keep
port2o>> shift -8 shift HEX: FF bitand ;
M: space-invaders read-port ( port cpu -- byte )
#! Read a byte from the hardware port. 'port' should
#! be an 8-bit value.
swap {
{ 1 [ read-port1 ] }
{ 2 [ read-port2 ] }
{ 3 [ read-port3 ] }
[ 2drop 0 ]
} case ;
: write-port2 ( value cpu -- )
#! Setting this value affects the value read from port 3
port2o<< ;
:: bit-newly-set? ( old-value new-value bit -- bool )
new-value bit bit? [ old-value bit bit? not ] dip and ;
: port3-newly-set? ( new-value cpu bit -- bool )
[ port3o>> swap ] dip bit-newly-set? ;
: port5-newly-set? ( new-value cpu bit -- bool )
[ port5o>> swap ] dip bit-newly-set? ;
: write-port3 ( value cpu -- )
#! Connected to the sound hardware
#! Bit 0 = spaceship sound (looped)
#! Bit 1 = Shot
#! Bit 2 = Your ship hit
#! Bit 3 = Invader hit
#! Bit 4 = Extended play sound
over 0 bit? over looping?>> not and [
dup SOUND-UFO play-invaders-sound
t over looping?<<
] when
over 0 bit? not over looping?>> and [
dup SOUND-UFO stop-invaders-sound
f over looping?<<
] when
2dup 0 port3-newly-set? [ dup SOUND-UFO play-invaders-sound ] when
2dup 1 port3-newly-set? [ dup SOUND-SHOT play-invaders-sound ] when
2dup 2 port3-newly-set? [ dup SOUND-BASE-HIT play-invaders-sound ] when
2dup 3 port3-newly-set? [ dup SOUND-INVADER-HIT play-invaders-sound ] when
port3o<< ;
: write-port4 ( value cpu -- )
#! Affects the value returned by reading port 3
[ port4hi>> ] keep
[ port4lo<< ] keep
port4hi<< ;
: write-port5 ( value cpu -- )
#! Plays sounds
#! Bit 0 = invaders sound 1
#! Bit 1 = invaders sound 2
#! Bit 2 = invaders sound 3
#! Bit 3 = invaders sound 4
#! Bit 4 = spaceship hit
#! Bit 5 = amplifier enabled/disabled
2dup 0 port5-newly-set? [ dup SOUND-WALK1 play-invaders-sound ] when
2dup 1 port5-newly-set? [ dup SOUND-WALK2 play-invaders-sound ] when
2dup 2 port5-newly-set? [ dup SOUND-WALK3 play-invaders-sound ] when
2dup 3 port5-newly-set? [ dup SOUND-WALK4 play-invaders-sound ] when
2dup 4 port5-newly-set? [ dup SOUND-UFO-HIT play-invaders-sound ] when
port5o<< ;
M: space-invaders write-port ( value port cpu -- )
#! Write a byte to the hardware port, where 'port' is
#! an 8-bit value.
swap {
{ 2 [ write-port2 ] }
{ 3 [ write-port3 ] }
{ 4 [ write-port4 ] }
{ 5 [ write-port5 ] }
[ 3drop ]
} case ;
M: space-invaders reset ( cpu -- )
dup call-next-method
0 >>port1
0 >>port2i
0 >>port2o
0 >>port3o
0 >>port4lo
0 >>port4hi
0 >>port5o
drop ;
: gui-step ( cpu -- )
[ read-instruction ] keep ! n cpu
over get-cycles over inc-cycles
[ swap instructions nth call( cpu -- ) ] keep
[ pc>> HEX: FFFF bitand ] keep
pc<< ;
: gui-frame/2 ( cpu -- )
[ gui-step ] keep
[ cycles>> ] keep
over 16667 < [ ! cycles cpu
nip gui-frame/2
] [
[ [ 16667 - ] dip cycles<< ] keep
dup last-interrupt>> HEX: 10 = [
HEX: 08 over last-interrupt<< HEX: 08 swap interrupt
] [
HEX: 10 over last-interrupt<< HEX: 10 swap interrupt
] if
] if ;
: gui-frame ( cpu -- )
dup gui-frame/2 gui-frame/2 ;
: coin-down ( cpu -- )
[ port1>> 1 bitor ] keep port1<< ;
: coin-up ( cpu -- )
[ port1>> 255 1 - bitand ] keep port1<< ;
: player1-down ( cpu -- )
[ port1>> 4 bitor ] keep port1<< ;
: player1-up ( cpu -- )
[ port1>> 255 4 - bitand ] keep port1<< ;
: player2-down ( cpu -- )
[ port1>> 2 bitor ] keep port1<< ;
: player2-up ( cpu -- )
[ port1>> 255 2 - bitand ] keep port1<< ;
: fire-down ( cpu -- )
[ port1>> HEX: 10 bitor ] keep port1<< ;
: fire-up ( cpu -- )
[ port1>> 255 HEX: 10 - bitand ] keep port1<< ;
: left-down ( cpu -- )
[ port1>> HEX: 20 bitor ] keep port1<< ;
: left-up ( cpu -- )
[ port1>> 255 HEX: 20 - bitand ] keep port1<< ;
: right-down ( cpu -- )
[ port1>> HEX: 40 bitor ] keep port1<< ;
: right-up ( cpu -- )
[ port1>> 255 HEX: 40 - bitand ] keep port1<< ;
TUPLE: invaders-gadget < gadget cpu quit? windowed? ;
invaders-gadget H{
{ T{ key-down f f "ESC" } [ t over quit?<< dup windowed?>> [ close-window ] [ drop ] if ] }
{ T{ key-down f f "BACKSPACE" } [ cpu>> coin-down ] }
{ T{ key-up f f "BACKSPACE" } [ cpu>> coin-up ] }
{ T{ key-down f f "1" } [ cpu>> player1-down ] }
{ T{ key-up f f "1" } [ cpu>> player1-up ] }
{ T{ key-down f f "2" } [ cpu>> player2-down ] }
{ T{ key-up f f "2" } [ cpu>> player2-up ] }
{ T{ key-down f f "UP" } [ cpu>> fire-down ] }
{ T{ key-up f f "UP" } [ cpu>> fire-up ] }
{ T{ key-down f f "LEFT" } [ cpu>> left-down ] }
{ T{ key-up f f "LEFT" } [ cpu>> left-up ] }
{ T{ key-down f f "RIGHT" } [ cpu>> right-down ] }
{ T{ key-up f f "RIGHT" } [ cpu>> right-up ] }
} set-gestures
: <invaders-gadget> ( cpu -- gadget )
invaders-gadget new
swap >>cpu
f >>quit? ;
M: invaders-gadget pref-dim* drop { 224 256 } ;
M: invaders-gadget draw-gadget* ( gadget -- )
0 0 glRasterPos2i
1.0 -1.0 glPixelZoom
[ 224 256 GL_RGB GL_UNSIGNED_BYTE ] dip
cpu>> bitmap>> glDrawPixels ;
CONSTANT: black { 0 0 0 }
CONSTANT: white { 255 255 255 }
CONSTANT: green { 0 255 0 }
CONSTANT: red { 255 0 0 }
: addr>xy ( addr -- point )
#! Convert video RAM address to base X Y value. point is a {x y}.
HEX: 2400 - ! n
dup HEX: 1f bitand 8 * 255 swap - ! n y
swap -5 shift swap 2array ;
: plot-bitmap-pixel ( bitmap point color -- )
#! point is a {x y}. color is a {r g b}.
set-bitmap-pixel ;
: get-point-color ( point -- color )
#! Return the color to use for the given x/y position.
first2
{
{ [ dup 184 238 between? pick 0 223 between? and ] [ 2drop green ] }
{ [ dup 240 247 between? pick 16 133 between? and ] [ 2drop green ] }
{ [ dup 247 215 - 247 184 - between? pick 0 223 between? and ] [ 2drop red ] }
[ 2drop white ]
} cond ;
: plot-bitmap-bits ( bitmap point byte bit -- )
#! point is a {x y}.
[ first2 ] 2dip
dup swapd -1 * shift 1 bitand 0 =
[ - 2array ] dip
[ black ] [ dup get-point-color ] if
plot-bitmap-pixel ;
: 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 >= [
bitmap>> -rot do-bitmap-update
] [
3drop
] if ;
: sync-frame ( micros -- micros )
#! Sleep until the time for the next frame arrives.
1000 60 / >fixnum + gmt timestamp>micros - dup 0 >
[ milliseconds threads:sleep ] [ drop threads:yield ] if gmt timestamp>micros ;
: invaders-process ( micros gadget -- )
#! Run a space invaders gadget inside a
#! concurrent process. Messages can be sent to
#! signal key presses, etc.
dup quit?>> [
2drop
] [
[ sync-frame ] dip
[ cpu>> gui-frame ] keep
[ relayout-1 ] keep
invaders-process
] if ;
M: invaders-gadget graft* ( gadget -- )
dup cpu>> init-sounds
f over quit?<<
[ gmt timestamp>micros swap invaders-process ] curry
"Space invaders" threads:spawn drop ;
M: invaders-gadget ungraft* ( gadget -- )
t swap quit?<< ;
: (run) ( title cpu rom-info -- )
over load-rom* <invaders-gadget> t >>windowed? swap open-window ;
CONSTANT: rom-info {
{ HEX: 0000 "invaders/invaders.h" }
{ HEX: 0800 "invaders/invaders.g" }
{ HEX: 1000 "invaders/invaders.f" }
{ HEX: 1800 "invaders/invaders.e" }
}
: run-invaders ( -- )
[
"Space Invaders" <space-invaders> rom-info (run)
] with-ui ;
MAIN: run-invaders