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uxn/projects/examples/devices/screen.usm
2021-05-24 22:36:15 +01:00

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2.2 KiB
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( dev/screen )
%RTN { JMP2r }
%MOD { DUP2 DIV MUL SUB }
%2// { #01 SFT2 }
( devices )
|00 @System [ &vector $2 &pad $6 &r $2 &g $2 &b $2 ]
|20 @Screen [ &vector $2 &width $2 &height $2 &pad $2 &x $2 &y $2 &addr $2 &color $1 ]
( variables )
|0000
@center [ &x $2 &y $2 ]
( init )
|0100 ( -> )
( theme )
#025f .System/r DEO2
#0c2f .System/g DEO2
#0da4 .System/b DEO2
( find screen center )
.Screen/width DEI2 2// .center/x STZ2
.Screen/height DEI2 2// .center/y STZ2
( draw )
;draw-table JSR2
;draw-sprites JSR2
;draw-circle JSR2
BRK
@draw-sprites ( -- )
;preview_icn .Screen/addr DEO2
#00 #00
&loop
( move ) OVR #0f AND #40 SFT #02 DIV #00 SWP
.center/x LDZ2 #0040 SUB2 ADD2 .Screen/x DEO2
( move ) OVR #f0 AND #02 DIV #00 SWP
.center/y LDZ2 #0040 SUB2 ADD2 .Screen/y DEO2
( draw ) OVR .Screen/color DEO
( incr ) SWP #01 ADD SWP
NEQk ,&loop JCN
POP2
RTN
@draw-table ( -- )
#00 #10
&loop
OVR #08 MUL #00 SWP ;font-hex ADD2 .Screen/addr DEO2
( x-axis )
OVR #08 MUL #00 SWP
.center/x LDZ2 #0040 SUB2 ADD2 .Screen/x DEO2
.center/y LDZ2 #0050 SUB2 .Screen/y DEO2
( draw ) #21 .Screen/color DEO
( y-axis )
OVR #08 MUL #00 SWP
.center/y LDZ2 #0040 SUB2 ADD2 .Screen/y DEO2
.center/x LDZ2 #0050 SUB2 .Screen/x DEO2
( draw ) #21 .Screen/color DEO
( incr ) SWP #01 ADD SWP
LTHk ,&loop JCN
POP2
RTN
@draw-circle ( -- )
;preview_icn .Screen/addr DEO2
.center/x LDZ2 #0048 ADD2 .Screen/x DEO2
.center/y LDZ2 #0030 ADD2 .Screen/y DEO2
#21 .Screen/color DEO
.center/x LDZ2 #0050 ADD2 .Screen/x DEO2
#61 .Screen/color DEO
.center/x LDZ2 #0048 ADD2 .Screen/x DEO2
.center/y LDZ2 #0038 ADD2 .Screen/y DEO2
#a1 .Screen/color DEO
.center/x LDZ2 #0050 ADD2 .Screen/x DEO2
#f1 .Screen/color DEO
RTN
@preview_icn [
0f38 675f dfbf bfbf 0007 1820 2344 4848
@font-hex
007c 8282 8282 827c 0030 1010 1010 1010
007c 8202 7c80 80fe 007c 8202 1c02 827c
000c 1424 4484 fe04 00fe 8080 7c02 827c
007c 8280 fc82 827c 007c 8202 1e02 0202
007c 8282 7c82 827c 007c 8282 7e02 827c
007c 8202 7e82 827e 00fc 8282 fc82 82fc
007c 8280 8080 827c 00fc 8282 8282 82fc
007c 8280 f080 827c 007c 8280 f080 8080