Basic snake.tal

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Devine Lu Linvega 2021-11-02 13:13:59 -07:00
parent 28aaf40e6d
commit 1bf6eaeec0
1 changed files with 194 additions and 0 deletions

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( uxnasm projects/examples/demos/snake.tal bin/snake.rom && uxnemu bin/snake.rom )
%+ { ADD } %- { SUB } %/ { DIV }
%< { LTH } %> { GTH } %= { EQU } %! { NEQ }
%++ { ADD2 } %-- { SUB2 } %// { DIV2 }
%<< { LTH2 } %>> { GTH2 } %== { EQU2 } %!! { NEQ2 }
%2/ { #01 SFT } %2* { #10 SFT }
%8// { #03 SFT2 } %8** { #30 SFT2 }
%MOD { DIVk MUL SUB }
%RTN { JMP2r }
%TOS { #00 SWP }
%SWP? { #01 JCN SWP }
%BRK? { #01 JCN BRK }
%DEBUG { ;print-hex JSR2 #0a .Console/write DEO }
%DEBUG2 { SWP ;print-hex JSR2 ;print-hex JSR2 #0a .Console/write DEO }
( devices )
|00 @System [ &vector $2 &wst $1 &rst $1 &pad $4 &r $2 &g $2 &b $2 &debug $1 &halt $1 ]
|10 @Console [ &vector $2 &read $1 &pad $5 &write $1 &error $1 ]
|20 @Screen [ &vector $2 &width $2 &height $2 &pad $2 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1 ]
|30 @Audio0 [ &vector $2 &position $2 &output $1 &pad $3 &adsr $2 &length $2 &addr $2 &volume $1 &pitch $1 ]
|80 @Controller [ &vector $2 &button $1 &key $1 ]
|b0 @DateTime [ &year $2 &month $1 &day $1 &hour $1 &minute $1 &second $1 &dotw $1 &doty $2 &isdst $1 ]
( variables )
|0000
( program )
@arena
&w $1 &h $1 &timer $1
@apple
&x $1 &y $1
@snake
&direction $1 &length $1
&x $1 &y $1
&tail
|0100 ( -> )
( theme )
#0f2f .System/r DEO2
#0ff2 .System/g DEO2
#0022 .System/b DEO2
( vectors )
;on-frame .Screen/vector DEO2
;on-button .Controller/vector DEO2
( resize )
#00c0 .Screen/width DEO2
#0100 .Screen/height DEO2
.Screen/width DEI2 8// NIP .arena/w STZ
.Screen/height DEI2 8// NIP .arena/h STZ
( put snake )
.arena/w LDZ 2/ #01 - .snake/x STZ
.arena/h LDZ 2/ #01 - .snake/y STZ
;add-apple JSR2
BRK
@on-frame ( -> )
.arena/timer LDZ INC DUP .arena/timer STZ
#06 = BRK?
#00 ;draw-snake JSR2
;move JSR2
#02 ;draw-snake JSR2
( reset ) #00 .arena/timer STZ
BRK
@on-button ( -> )
.Controller/button DEI #04 SFT
DUP #00 = ,&skip JCN
DUP .snake/direction STZ
&skip
POP
BRK
@move ( -- )
( tail )
.snake/x LDZ2 STH2
.snake/length LDZ #00
&loop
DUP 2* .snake/tail + LDZ2 STH2
SWP2r
DUP 2* .snake/tail + STH2r ROT STZ2
INC GTHk ,&loop JCN
POP2
POP2r
.snake/direction LDZ
DUP #01 ! ,&no-up JCN
.snake/y LDZ #01 -
.arena/h LDZ LTHk SWP? POP
.snake/y STZ
&no-up
DUP #02 ! ,&no-down JCN
.snake/y LDZ INC
.arena/h LDZ MOD
.snake/y STZ
&no-down
DUP #04 ! ,&no-left JCN
.snake/x LDZ #01 -
.arena/w LDZ LTHk SWP? POP
.snake/x STZ
&no-left
DUP #08 ! ,&no-right JCN
.snake/x LDZ INC
.arena/w LDZ MOD
.snake/x STZ
&no-right
POP
( detect collision )
.snake/x LDZ .apple/x LDZ ! ,&no-collision JCN
.snake/y LDZ .apple/y LDZ ! ,&no-collision JCN
#00 ;draw-apple JSR2
.snake/length LDZ INC DUP DEBUG .snake/length STZ
;add-apple JSR2
;move JSR2
&no-collision
RTN
@add-apple ( -- )
( seed )
.DateTime/hour DEI2 .DateTime/minute DEI2 MUL2 #1234 MUL2 +
.arena/w LDZ MOD .apple/x STZ
.DateTime/hour DEI2 .DateTime/minute DEI2 MUL2 #abcd MUL2 +
.arena/h LDZ MOD .apple/y STZ
#03 ;draw-apple JSR2
RTN
@draw-snake ( color -- )
.snake/x LDZ TOS 8** .Screen/x DEO2
.snake/y LDZ TOS 8** .Screen/y DEO2
;snake-icns .Screen/addr DEO2
STHk .Screen/sprite DEO
( draw tail )
.snake/length LDZ #00
&loop
DUP 2* .snake/tail + LDZ TOS 8** .Screen/x DEO2
DUP 2* .snake/tail + INC LDZ TOS 8** .Screen/y DEO2
STHkr .Screen/sprite DEO
INC GTHk ,&loop JCN
POP2
POPr
RTN
@draw-apple ( color -- )
.apple/x LDZ TOS 8** .Screen/x DEO2
.apple/y LDZ TOS 8** .Screen/y DEO2
;apple-icn .Screen/addr DEO2
.Screen/sprite DEO
RTN
RTN
@print-hex ( value -- )
STHk #04 SFT ,&parse JSR .Console/write DEO
STHr #0f AND ,&parse JSR .Console/write DEO
RTN
&parse ( value -- char )
DUP #09 GTH ,&above JCN #30 ADD RTN &above #09 SUB #60 ADD RTN
RTN
( assets )
@snake-icns
ffff ffff ffff ffff
@apple-icn
ffff ffff ffff ffff