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(snake) Faster positions

This commit is contained in:
Devine Lu Linvega 2024-03-24 10:55:51 -07:00
parent c73f1e066a
commit 4d329e7e5f
2 changed files with 11 additions and 10 deletions
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projects/examples/demos/res.rom Normal file
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21
projects/examples/demos/snake.tal
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@ -7,8 +7,8 @@
|000
@arena &w $1 &h $1
@apple &x $1 &y $1
@snake &direction $1 &length $1 &dead $1 &x $1 &y $1 &tail $40
@apple &pos &x $1 &y $1
@snake &pos &x $1 &y $1 &direction $1 &length $1 &dead $1 &tail $40
|100
@ -64,7 +64,7 @@
@<move> ( -- )
( | tail )
.snake/x LDZ2 STH2
.snake/pos LDZ2 STH2
.snake/length LDZ #00
&>loop ( -- )
( pop ) DUPk ADD .snake/tail ADD LDZ2 STH2
@ -83,14 +83,15 @@
.snake/x LDZ INC .arena/w LDZ DIVk MUL SUB .snake/x STZ }
POP
( | detect collision with apple )
.snake/x LDZ2 .apple/x LDZ2 NEQ2 ?{
.snake/pos LDZ2 .apple/pos LDZ2 NEQ2 ?{
#00 <draw-apple>
.snake/length LDZ INC .snake/length STZ
<add-apple>
<move> }
( | detect collision with body )
.snake/length LDZ #01
&>loop-body ( -- )
DUPk ADD .snake/tail ADD LDZ2 .snake/x LDZ2 NEQ2 ?{
DUPk ADD .snake/tail ADD LDZ2 .snake/pos LDZ2 NEQ2 ?{
[ LIT2 01 -snake/dead ] STZ
#03 <draw-snake> }
INC GTHk ?&>loop-body
@ -111,14 +112,14 @@
;snake-icns .Screen/addr DEO2
[ LIT2 -snake/tail -snake/length ] LDZ DUP ADD OVR ADD SWP
&>loop ( -- )
LDZk #0005 SFT2 .Screen/x DEO2
INCk LDZ #0005 SFT2 .Screen/y DEO2
LDZ2k #0005 SFT2 .Screen/y DEO2
#0005 SFT2 .Screen/x DEO2
DUPr [ LITr -Screen/sprite ] DEOr
INC INC GTHk ?&>loop
POP2
( | draw head )
.snake/x LDZ #0005 SFT2 .Screen/x DEO2
.snake/y LDZ #0005 SFT2 .Screen/y DEO2
.snake/pos LDZ2 #0005 SFT2 .Screen/y DEO2
#0005 SFT2 .Screen/x DEO2
;snake-icns/face .Screen/addr DEO2
[ LITr -Screen/sprite ] DEOr
JMP2r
@ -126,7 +127,7 @@
@<draw-apple> ( color -- )
.apple/x LDZ #0005 SFT2 .Screen/x DEO2
.apple/y LDZ #0005 SFT2 .Screen/y DEO2
STHk ;apple-chr ;fill-icn [ STHr ?{ SWP2 } POP2 ] .Screen/addr DEO2
STHk ;apple-chr ;fill-icn [ LITr 01 JCNr SWP2 POP2 ] .Screen/addr DEO2
.Screen/sprite DEO
JMP2r