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uxn/projects/examples/demos/drool.tal

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Tal
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2021-12-11 16:31:54 +00:00
(
100r animated logo splash screen
by Andrew Alderwick, 2021
based on artwork by Hundred Rabbits
)
2021-12-11 16:28:14 +00:00
( devices )
|00 @System [ &vector $2 &wst $1 &rst $1 &pad $4 &r $2 &g $2 &b $2 &debug $1 &halt $1 ]
|20 @Screen [ &vector $2 &width $2 &height $2 &pad $2 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1 ]
|c0 @DateTime [ &year $2 &month $1 &day $1 &hour $1 &minute $1 &second $1 &dotw $1 &doty $2 &isdst $1 ]
2021-12-11 16:28:14 +00:00
( variables )
|0000
( program )
|0100 @Reset ( -> )
( seed prng (must be nonzero) )
#00 .DateTime/second DEI
#00 .DateTime/minute DEI #60 SFT2 EOR2
#00 .DateTime/hour DEI #c0 SFT2 EOR2 ;prng/x STA2
#00 .DateTime/hour DEI #04 SFT2
#00 .DateTime/day DEI #10 SFT2 EOR2
#00 .DateTime/month DEI #60 SFT2 EOR2
.DateTime/year DEI2 #a0 SFT2 EOR2 ;prng/y STA2
;prng/x LDA2 ;prng/y LDA2 EOR2
;rabbits STH2 #0f05 &loop-x
#0f05 &loop-y
ROTk SWP STH2kr STA2 POP
INC2r INC2r
INC
GTHk ,&loop-y JCN
POP2
INC
GTHk ,&loop-x JCN
POP2 POP2r
( fall through )
@repeat
;init-occupancy JSR2
#00 ;precalc-frame STA
;precalculate-vector .Screen/vector DEO2
BRK
@init-occupancy ( -- )
#1400 &loop-y
#1400 &loop-x
ROTk #00 ;set-occupied JSR2 POP
INC
GTHk ,&loop-x JCN
POP2
INC
GTHk ,&loop-y JCN
POP2
;rabbits
DUP2 #00c8 ADD2 SWP2 &loop-rabbits
LDA2k #01 ;set-occupied JSR2
INC2 INC2
GTH2k ,&loop-rabbits JCN
POP2 POP2
JMP2r
@precalculate-vector ( -> )
,precalculate JSR BRK
@precalculate ( -- )
;rabbits #00c8 OVR ,precalc-frame LDR MUL2 ADD2 ( first rabbit address )
DUP2 #00c8 ADD2 SWP2 &loop-rabbits
DUP2 ,move-rabbit JSR
INC2 INC2
GTH2k ,&loop-rabbits JCN
POP2 POP2
,precalc-frame LDR INC DUP ,precalc-frame STR
#05 EQU JMP JMP2r
;display-init JSR2
;display .Screen/vector DEO2
JMP2r
@precalc-frame $1
@set-occupied ( x y value -- )
STH
#00 SWP #0014 MUL2 ( x yoffset* / value )
ROT #00 SWP ADD2 ( offset* / value )
;occupied ADD2 STH2 STAr
JMP2r
@move-rabbit ( addr* -- )
STH2k LDA2 ( x y / addr* )
DUP2 #00 ,set-occupied JSR
;&possible-moves ( x y possible* / addr* )
OVR2 #01 SUB ,&check-move JSR ( up )
OVR2 #01 ADD ,&check-move JSR ( down )
OVR2 #0100 SUB2 ,&check-move JSR ( left )
OVR2 #0100 ADD2 ,&check-move JSR ( right )
;&possible-moves SUB2 ( x y num-possible-times-2* / addr* )
DUP ,&can-move JCN
POP2
&write ( x y / addr* )
DUP2 #01 ,set-occupied JSR
STH2r #00c8 ADD2 STA2
JMP2r
&can-move ( x y num-possible-times-2* / addr* )
NIP2 ( num-possible-times-2* / addr* )
,prng JSR SWP2 DIV2k MUL2 SUB2 #fe AND ( chosen-move* / addr* )
;&possible-moves ADD2 LDA2
,&write JMP
&check-move ( possible* new-x new-y -- possible'* )
DUP2 ,get-occupied JSR ,&blocked JCN
OVR2r LIT2r 00c8 SUB2r ( possible* new-x new-y / previous-frame-addr* )
&check-history-loop
;rabbits INC2 STH2kr GTH2 ,&history-okay JCN
DUP2 STH2kr LDA2 EQU2 ,&history-clash JCN
LIT2r 00c8 SUB2r
,&check-history-loop JMP
&history-okay
POP2r
OVR2 STA2 INC2 INC2
JMP2r
&history-clash ( possible* new-x new-y / previous-frame-addr* )
POP2r
&blocked ( possible* new-x new-y )
POP2
JMP2r
&possible-moves $10
@get-occupied ( x y -- value )
#00 SWP #0014 MUL2 ( x yoffset* )
ROT #00 SWP ADD2 ( offset* )
;occupied ADD2 LDA
JMP2r
@prng ( -- number* )
LIT2 &x $2
DUP2 #50 SFT2 EOR2
DUP2 #03 SFT2 EOR2
LIT2 &y $2 DUP2 ,&x STR2
DUP2 #01 SFT2 EOR2 EOR2
,&y STR2k POP
JMP2r
@display-init ( -- )
.Screen/width DEI2 #01 SFT2 #0050 SUB2 ;display-rabbit/xoffset STA2
.Screen/height DEI2 #01 SFT2 #0050 SUB2 ;display-rabbit/yoffset STA2
;rabbit-sprite .Screen/addr DEO2
JMP2r
@display-rabbit ( color n counter -- )
OVR LTHk ,&finish JCN
SUB ( color n timeline )
DUP #63 GTH ,&start JCN
#17 DIVk STHk MUL SUB ( color n stage-timeline / frame )
DUP #07 GTH ,&static JCN
( rabbit is in-between two frames )
#08 OVR SUB ,&from-weight STR
,&to-weight STR ( color n / frame )
#00 SWP #10 SFT2 ;rabbits ADD2 #00c8 #00 STHr MUL2 ADD2 ( color from-addr* )
LDA2k STH2 #00c8 ADD2 LDA2
&draw ( color to-x to-y / from-x from-y )
STHr ,&mix JSR LIT2 &yoffset $2 ADD2 .Screen/y DEO2
STHr ,&mix JSR LIT2 &xoffset $2 ADD2 .Screen/x DEO2
.Screen/sprite DEO
JMP2r
&mix ( to-z from-z -- mixed* )
#00 SWP LIT2 00 &from-weight 00 MUL2 ( to-n from-mixed* )
ROT #00 SWP LIT2 00 &to-weight 00 MUL2 ADD2
JMP2r
&finish ( color n counter n )
POP
LITr ff ,&static JMP
&start ( color n counter )
LITr 04
&static ( color n counter / frame )
INCr
POP
#00 SWP #10 SFT2 ;rabbits ADD2 #00c8 #00 STHr MUL2 ADD2
LDA2 STH2k
,&draw JMP
@display-counter $1
@display ( -> )
,display-counter LDR #01 SUB DUP ,display-counter STR
DUP #f0 LTH ,&skip-palette JCN
#ff OVR SUB #00
DUP2 .System/r DEO2
DUP2 .System/g DEO2
.System/b DEO2
&skip-palette
INCk #0000 &clear-loop
ROTk ;display-rabbit JSR2
INC
DUP #64 LTH ,&clear-loop JCN
POP2 POP
#0500 &draw-loop
ROTk ;display-rabbit JSR2
INC
DUP #64 LTH ,&draw-loop JCN
POP2
,&no-finish JCN
;sunset .Screen/vector DEO2
&no-finish
BRK
@sunset ( -> )
;display-counter LDA #02 SUB DUP ;display-counter STA
DUP #1f GTH ,&skip-palette JCN
DUP #01 SFT #00
DUP2 .System/r DEO2
DUP2 .System/g DEO2
.System/b DEO2
#6400 &draw-loop
#05 OVR #00 ;display-rabbit JSR2
INC
GTHk ,&draw-loop JCN
POP2
&skip-palette
,&no-finish JCN
;repeat JMP2
&no-finish
BRK
@rabbit-sprite 003c 7e7e 7e7e 3c00
@occupied $190
@rabbits