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2548 - teach 'print' to print integers

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Still can't print non-integer numbers, so this is a bit hacky.

The big consequence is that you can't print literal characters anymore
because of our rules about how we pick which variant to statically
dispatch to. You have to save to a character variable first.

Maybe I can add an annotation to literals..
This commit is contained in:
Kartik K. Agaram 2015-12-28 08:44:36 -08:00
parent e94453100d
commit bbe0801ab1
16 changed files with 164 additions and 98 deletions
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126
081print.mu
View File

@ -187,7 +187,8 @@ recipe print screen:address:screen, c:character -> screen:address:screen [
scenario print-character-at-top-left [
run [
1:address:screen <- new-fake-screen 3/width, 2/height
1:address:screen <- print 1:address:screen, 97 # 'a'
11:character <- copy 97/a
1:address:screen <- print 1:address:screen, 11:character/a
2:address:array:screen-cell <- get *1:address:screen, data:offset
3:array:screen-cell <- copy *2:address:array:screen-cell
]
@ -202,7 +203,8 @@ scenario print-character-at-top-left [
scenario print-character-in-color [
run [
1:address:screen <- new-fake-screen 3/width, 2/height
1:address:screen <- print 1:address:screen, 97/a, 1/red
11:character <- copy 97/a
1:address:screen <- print 1:address:screen, 11:character/a, 1/red
2:address:array:screen-cell <- get *1:address:screen, data:offset
3:array:screen-cell <- copy *2:address:array:screen-cell
]
@ -217,8 +219,10 @@ scenario print-character-in-color [
scenario print-backspace-character [
run [
1:address:screen <- new-fake-screen 3/width, 2/height
1:address:screen <- print 1:address:screen, 97 # 'a'
1:address:screen <- print 1:address:screen, 8 # backspace
11:character <- copy 97/a
1:address:screen <- print 1:address:screen, 11:character/a
12:character <- copy 8/backspace
1:address:screen <- print 1:address:screen, 12:character/backspace
2:number <- get *1:address:screen, cursor-column:offset
3:address:array:screen-cell <- get *1:address:screen, data:offset
4:array:screen-cell <- copy *3:address:array:screen-cell
@ -235,9 +239,12 @@ scenario print-backspace-character [
scenario print-extra-backspace-character [
run [
1:address:screen <- new-fake-screen 3/width, 2/height
1:address:screen <- print 1:address:screen, 97 # 'a'
1:address:screen <- print 1:address:screen, 8 # backspace
1:address:screen <- print 1:address:screen, 8 # backspace
11:character <- copy 97/a
1:address:screen <- print 1:address:screen, 11:character/a
12:character <- copy 8/backspace
1:address:screen <- print 1:address:screen, 12:character/backspace
12:character <- copy 8/backspace
1:address:screen <- print 1:address:screen, 12:character/backspace
2:number <- get *1:address:screen, cursor-column:offset
3:address:array:screen-cell <- get *1:address:screen, data:offset
4:array:screen-cell <- copy *3:address:array:screen-cell
@ -254,9 +261,12 @@ scenario print-extra-backspace-character [
scenario print-character-at-right-margin [
run [
1:address:screen <- new-fake-screen 2/width, 2/height
1:address:screen <- print 1:address:screen, 97 # 'a'
1:address:screen <- print 1:address:screen, 98 # 'b'
1:address:screen <- print 1:address:screen, 99 # 'c'
11:character <- copy 97/a
1:address:screen <- print 1:address:screen, 11:character/a
12:character <- copy 98/b
1:address:screen <- print 1:address:screen, 12:character/b
13:character <- copy 99/b
1:address:screen <- print 1:address:screen, 13:character/c
2:number <- get *1:address:screen, cursor-column:offset
3:address:array:screen-cell <- get *1:address:screen, data:offset
4:array:screen-cell <- copy *3:address:array:screen-cell
@ -275,8 +285,10 @@ scenario print-character-at-right-margin [
scenario print-newline-character [
run [
1:address:screen <- new-fake-screen 3/width, 2/height
1:address:screen <- print 1:address:screen, 97 # 'a'
1:address:screen <- print 1:address:screen, 10/newline
10:character <- copy 10/newline
11:character <- copy 97/a
1:address:screen <- print 1:address:screen, 11:character/a
1:address:screen <- print 1:address:screen, 10:character/newline
2:number <- get *1:address:screen, cursor-row:offset
3:number <- get *1:address:screen, cursor-column:offset
4:address:array:screen-cell <- get *1:address:screen, data:offset
@ -295,9 +307,10 @@ scenario print-newline-character [
scenario print-newline-at-bottom-line [
run [
1:address:screen <- new-fake-screen 3/width, 2/height
1:address:screen <- print 1:address:screen, 10/newline
1:address:screen <- print 1:address:screen, 10/newline
1:address:screen <- print 1:address:screen, 10/newline
10:character <- copy 10/newline
1:address:screen <- print 1:address:screen, 10:character/newline
1:address:screen <- print 1:address:screen, 10:character/newline
1:address:screen <- print 1:address:screen, 10:character/newline
2:number <- get *1:address:screen, cursor-row:offset
3:number <- get *1:address:screen, cursor-column:offset
]
@ -310,36 +323,42 @@ scenario print-newline-at-bottom-line [
scenario print-character-at-bottom-right [
run [
1:address:screen <- new-fake-screen 2/width, 2/height
1:address:screen <- print 1:address:screen, 10/newline
1:address:screen <- print 1:address:screen, 97 # 'a'
1:address:screen <- print 1:address:screen, 98 # 'b'
1:address:screen <- print 1:address:screen, 99 # 'c'
1:address:screen <- print 1:address:screen, 10/newline
1:address:screen <- print 1:address:screen, 100 # 'd'
10:character <- copy 10/newline
1:address:screen <- print 1:address:screen, 10:character/newline
11:character <- copy 97/a
1:address:screen <- print 1:address:screen, 11:character/a
12:character <- copy 98/b
1:address:screen <- print 1:address:screen, 12:character/b
13:character <- copy 99/c
1:address:screen <- print 1:address:screen, 13:character/c
1:address:screen <- print 1:address:screen, 10:character/newline
14:character <- copy 100/d
1:address:screen <- print 1:address:screen, 14:character/d
2:number <- get *1:address:screen, cursor-row:offset
3:number <- get *1:address:screen, cursor-column:offset
4:address:array:screen-cell <- get *1:address:screen, data:offset
5:array:screen-cell <- copy *4:address:array:screen-cell
20:array:screen-cell <- copy *4:address:array:screen-cell
]
memory-should-contain [
2 <- 1 # cursor row
3 <- 1 # cursor column
5 <- 4 # width*height
6 <- 0 # unused
7 <- 7 # white
8 <- 0 # unused
9 <- 7 # white
10 <- 97 # 'a'
11 <- 7 # white
12 <- 100 # 'd' over 'b' and 'c' and newline
13 <- 7 # white
14 <- 0
20 <- 4 # width*height
21 <- 0 # unused
22 <- 7 # white
23 <- 0 # unused
24 <- 7 # white
25 <- 97 # 'a'
26 <- 7 # white
27 <- 100 # 'd' over 'b' and 'c' and newline
28 <- 7 # white
29 <- 0
]
]
recipe clear-line screen:address:screen -> screen:address:screen [
local-scope
load-ingredients
space:character <- copy 0/nul
# if x exists, clear line in fake screen
{
break-unless screen
@ -351,7 +370,7 @@ recipe clear-line screen:address:screen -> screen:address:screen [
right:number <- subtract width, 1
done?:boolean <- greater-or-equal *column, right
break-if done?
print screen, [ ] # implicitly updates 'column'
print screen, space # implicitly updates 'column'
loop
}
# now back to where the cursor was
@ -395,29 +414,30 @@ scenario clear-line-erases-printed-characters [
run [
1:address:screen <- new-fake-screen 3/width, 2/height
# print a character
1:address:screen <- print 1:address:screen, 97 # 'a'
10:character <- copy 97/a
1:address:screen <- print 1:address:screen, 10:character/a
# move cursor to start of line
1:address:screen <- move-cursor 1:address:screen, 0/row, 0/column
# clear line
1:address:screen <- clear-line 1:address:screen
2:address:array:screen-cell <- get *1:address:screen, data:offset
3:array:screen-cell <- copy *2:address:array:screen-cell
20:array:screen-cell <- copy *2:address:array:screen-cell
]
# screen should be blank
memory-should-contain [
3 <- 6 # width*height
4 <- 0
5 <- 7
6 <- 0
7 <- 7
8 <- 0
9 <- 7
10 <- 0
11 <- 7
12 <- 0
13 <- 7
14 <- 0
15 <- 7
20 <- 6 # width*height
21 <- 0
22 <- 7
23 <- 0
24 <- 7
25 <- 0
26 <- 7
27 <- 0
28 <- 7
29 <- 0
30 <- 7
31 <- 0
32 <- 7
]
]
@ -641,8 +661,7 @@ scenario print-text-stops-at-right-margin [
recipe print-integer screen:address:screen, n:number -> screen:address:screen [
local-scope
screen:address:screen <- next-ingredient
n:number <- next-ingredient
load-ingredients
color:number, color-found?:boolean <- next-ingredient
{
# default color to white
@ -659,3 +678,10 @@ recipe print-integer screen:address:screen, n:number -> screen:address:screen [
s:address:array:character <- to-text n
screen <- print screen, s, color, bg-color
]
# for now, we can only print integers
recipe print screen:address:screen, n:number -> screen:address:screen [
local-scope
load-ingredients
screen <- print-integer screen, n
]

21
082scenario_screen.cc
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@ -9,7 +9,8 @@
scenario screen-in-scenario [
assume-screen 5/width, 3/height
run [
screen:address:screen <- print screen:address:screen, 97 # 'a'
1:character <- copy 97/a
screen:address:screen <- print screen:address:screen, 1:character/a
]
screen-should-contain [
# 01234
@ -23,8 +24,10 @@ scenario screen-in-scenario [
scenario screen-in-scenario-unicode-color [
assume-screen 5/width, 3/height
run [
screen:address:screen <- print screen:address:screen, 955/greek-small-lambda, 1/red
screen:address:screen <- print screen:address:screen, 97/a
1:character <- copy 955/greek-small-lambda
screen:address:screen <- print screen:address:screen, 1:character/lambda, 1/red
2:character <- copy 97/a
screen:address:screen <- print screen:address:screen, 2:character/a
]
screen-should-contain [
# 01234
@ -39,8 +42,10 @@ scenario screen-in-scenario-unicode-color [
scenario screen-in-scenario-color [
assume-screen 5/width, 3/height
run [
screen:address:screen <- print screen:address:screen, 955/greek-small-lambda, 1/red
screen:address:screen <- print screen:address:screen, 97/a, 7/white
1:character <- copy 955/greek-small-lambda
screen:address:screen <- print screen:address:screen, 1:character/lambda, 1/red
2:character <- copy 97/a
screen:address:screen <- print screen:address:screen, 2:character/a, 7/white
]
# screen-should-contain shows everything
screen-should-contain [
@ -72,7 +77,8 @@ scenario screen-in-scenario-color [
scenario screen-in-scenario-error [
assume-screen 5/width, 3/height
run [
screen:address:screen <- print screen:address:screen, 97 # 'a'
1:character <- copy 97/a
screen:address:screen <- print screen:address:screen, 1:character/a
]
screen-should-contain [
# 01234
@ -90,7 +96,8 @@ scenario screen-in-scenario-error [
scenario screen-in-scenario-color [
assume-screen 5/width, 3/height
run [
screen:address:screen <- print screen:address:screen, 97/a, 1/red
1:character <- copy 97/a
screen:address:screen <- print screen:address:screen, 1:character/a, 1/red
]
screen-should-contain-in-color 2/green, [
# 01234

6
083scenario_screen_test.mu
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@ -3,7 +3,8 @@
scenario print-character-at-top-left-2 [
assume-screen 3/width, 2/height
run [
screen:address:screen <- print screen:address:screen, 97/a
1:character <- copy 97/a
screen:address:screen <- print screen:address:screen, 1:character/a
]
screen-should-contain [
.a .
@ -15,7 +16,8 @@ scenario clear-line-erases-printed-characters-2 [
assume-screen 5/width, 3/height
run [
# print a character
screen:address:screen <- print screen:address:screen, 97/a
1:character <- copy 97/a
screen:address:screen <- print screen:address:screen, 1:character/a
# move cursor to start of line
screen:address:screen <- move-cursor screen:address:screen, 0/row, 0/column
# clear line

3
chessboard.mu
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@ -149,6 +149,7 @@ recipe print-board screen:address:screen, board:address:array:address:array:char
local-scope
load-ingredients
row:number <- copy 7 # start printing from the top of the board
space:character <- copy 32/space
# print each row
{
done?:boolean <- lesser-than row, 0
@ -166,7 +167,7 @@ recipe print-board screen:address:screen, board:address:array:address:array:char
f:address:array:character <- index *board, col
c:character <- index *f, row
print screen, c
print screen, 32/space
print screen, space
col <- add col, 1
loop
}

6
edit/001-editor.mu
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@ -193,7 +193,8 @@ recipe render screen:address:screen, editor:address:editor-data -> last-row:numb
at-right?:boolean <- equal column, right
break-unless at-right?
# print wrap icon
print screen, 8617/loop-back-to-left, 245/grey
wrap-icon:character <- copy 8617/loop-back-to-left
print screen, wrap-icon, 245/grey
column <- copy left
row <- add row, 1
screen <- move-cursor screen, row, column
@ -227,10 +228,11 @@ recipe render screen:address:screen, editor:address:editor-data -> last-row:numb
recipe clear-line-delimited screen:address:screen, column:number, right:number -> screen:address:screen [
local-scope
load-ingredients
space:character <- copy 32/space
{
done?:boolean <- greater-than column, right
break-if done?
screen <- print screen, 32/space
screen <- print screen, space
column <- add column, 1
loop
}

6
edit/003-shortcuts.mu
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@ -125,7 +125,8 @@ recipe delete-before-cursor editor:address:editor-data, screen:address:screen ->
loop
}
# we're guaranteed not to be at the right margin
screen <- print screen, 32/space
space:character <- copy 32/space
screen <- print screen, space
go-render? <- copy 0/false
]
@ -366,7 +367,8 @@ recipe delete-at-cursor editor:address:editor-data, screen:address:screen -> edi
loop
}
# we're guaranteed not to be at the right margin
screen <- print screen, 32/space
space:character <- copy 32/space
screen <- print screen, space
go-render? <- copy 0/false
]

24
edit/004-programming-environment.mu
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@ -267,7 +267,8 @@ scenario edit-multiple-editors [
]
# show the cursor at the right window
run [
print screen:address:screen, 9251/␣/cursor
8:character/cursor <- copy 9251/␣
print screen:address:screen, 8:character/cursor
]
screen-should-contain [
. run (F4) .
@ -307,7 +308,8 @@ scenario editor-in-focus-keeps-cursor [
assume-console []
run [
event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
print screen:address:screen, 9251/␣/cursor
4:character/cursor <- copy 9251/␣
print screen:address:screen, 4:character/cursor
]
# is cursor at the right place?
screen-should-contain [
@ -322,7 +324,8 @@ scenario editor-in-focus-keeps-cursor [
]
run [
event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
print screen:address:screen, 9251/␣/cursor
4:character/cursor <- copy 9251/␣
print screen:address:screen, 4:character/cursor
]
# cursor should still be right
screen-should-contain [
@ -356,7 +359,8 @@ def]
]
run [
event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
print screen:address:screen, 9251/␣/cursor
4:character/cursor <- copy 9251/␣
print screen:address:screen, 4:character/cursor
]
# cursor moves to end of old line
screen-should-contain [
@ -473,7 +477,8 @@ recipe render screen:address:screen, s:address:array:character, left:number, rig
at-right?:boolean <- equal column, right
break-unless at-right?
# print wrap icon
print screen, 8617/loop-back-to-left, 245/grey
wrap-icon:character <- copy 8617/loop-back-to-left
print screen, wrap-icon, 245/grey
column <- copy left
row <- add row, 1
screen <- move-cursor screen, row, column
@ -488,7 +493,8 @@ recipe render screen:address:screen, s:address:array:character, left:number, rig
{
done?:boolean <- greater-than column, right
break-if done?
print screen, 32/space
space:character <- copy 32/space
print screen, space
column <- add column, 1
loop
}
@ -534,7 +540,8 @@ recipe render-code screen:address:screen, s:address:array:character, left:number
at-right?:boolean <- equal column, right
break-unless at-right?
# print wrap icon
print screen, 8617/loop-back-to-left, 245/grey
wrap-icon:character <- copy 8617/loop-back-to-left
print screen, wrap-icon, 245/grey
column <- copy left
row <- add row, 1
screen <- move-cursor screen, row, column
@ -549,7 +556,8 @@ recipe render-code screen:address:screen, s:address:array:character, left:number
{
done?:boolean <- greater-than column, right
break-if done?
print screen, 32/space
space:character <- copy 32/space
print screen, space
column <- add column, 1
loop
}

15
edit/005-sandbox.mu
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@ -253,7 +253,8 @@ recipe render-sandboxes screen:address:screen, sandbox:address:sandbox-data, lef
row <- add row, 1
screen <- move-cursor screen, row, left
clear-line-delimited screen, left, right
print screen, 120/x, 245/grey
delete-icon:character <- copy 120/x
print screen, delete-icon, 245/grey
# save menu row so we can detect clicks to it later
starting-row:address:number <- get-address *sandbox, starting-row-on-screen:offset
*starting-row <- copy row
@ -349,9 +350,11 @@ recipe render-screen screen:address:screen, sandbox-screen:address:screen, left:
column <- copy left
screen <- move-cursor screen, row, column
# initial leader for each row: two spaces and a '.'
print screen, 32/space, 245/grey
print screen, 32/space, 245/grey
print screen, 46/full-stop, 245/grey
space:character <- copy 32/space
print screen, space, 245/grey
print screen, space, 245/grey
full-stop:character <- copy 46/period
print screen, full-stop, 245/grey
column <- add left, 3
{
# print row
@ -372,13 +375,13 @@ recipe render-screen screen:address:screen, sandbox-screen:address:screen, left:
loop
}
# print final '.'
print screen, 46/full-stop, 245/grey
print screen, full-stop, 245/grey
column <- add column, 1
{
# clear rest of current line
line-done?:boolean <- greater-than column, right
break-if line-done?
print screen, 32/space
print screen, space
column <- add column, 1
loop
}

3
edit/008-sandbox-test.mu
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@ -45,7 +45,8 @@ recipe foo [
]
# cursor should remain unmoved
run [
print screen:address:screen, 9251/␣/cursor
4:character/cursor <- copy 9251/␣
print screen:address:screen, 4:character/cursor
]
screen-should-contain [
. run (F4) .

5
edit/009-sandbox-trace.mu
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@ -30,7 +30,8 @@ recipe foo [
]
run [
event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
print screen:address:screen, 9251/␣/cursor
4:character/cursor-icon <- copy 9251/␣
print screen:address:screen, 4:character/cursor-icon
]
# trace now printed and cursor shouldn't have budged
screen-should-contain [
@ -59,7 +60,7 @@ recipe foo [
]
run [
event-loop screen:address:screen, console:address:console, 3:address:programming-environment-data
print screen:address:screen, 9251/␣/cursor
print screen:address:screen, 4:character/cursor-icon
]
# trace hidden again
screen-should-contain [

6
sandbox/001-editor.mu
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@ -193,7 +193,8 @@ recipe render screen:address:screen, editor:address:editor-data -> last-row:numb
at-right?:boolean <- equal column, right
break-unless at-right?
# print wrap icon
print screen, 8617/loop-back-to-left, 245/grey
wrap-icon:character <- copy 8617/loop-back-to-left
print screen, wrap-icon, 245/grey
column <- copy left
row <- add row, 1
screen <- move-cursor screen, row, column
@ -227,10 +228,11 @@ recipe render screen:address:screen, editor:address:editor-data -> last-row:numb
recipe clear-line-delimited screen:address:screen, column:number, right:number -> screen:address:screen [
local-scope
load-ingredients
space:character <- copy 32/space
{
done?:boolean <- greater-than column, right
break-if done?
screen <- print screen, 32/space
screen <- print screen, space
column <- add column, 1
loop
}

6
sandbox/003-shortcuts.mu
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@ -125,7 +125,8 @@ recipe delete-before-cursor editor:address:editor-data, screen:address:screen ->
loop
}
# we're guaranteed not to be at the right margin
screen <- print screen, 32/space
space:character <- copy 32/space
screen <- print screen, space
go-render? <- copy 0/false
]
@ -366,7 +367,8 @@ recipe delete-at-cursor editor:address:editor-data, screen:address:screen -> edi
loop
}
# we're guaranteed not to be at the right margin
screen <- print screen, 32/space
space:character <- copy 32/space
screen <- print screen, space
go-render? <- copy 0/false
]

12
sandbox/004-programming-environment.mu
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@ -223,7 +223,8 @@ recipe render screen:address:screen, s:address:array:character, left:number, rig
at-right?:boolean <- equal column, right
break-unless at-right?
# print wrap icon
print screen, 8617/loop-back-to-left, 245/grey
wrap-icon:character <- copy 8617/loop-back-to-left
print screen, wrap-icon, 245/grey
column <- copy left
row <- add row, 1
screen <- move-cursor screen, row, column
@ -238,7 +239,8 @@ recipe render screen:address:screen, s:address:array:character, left:number, rig
{
done?:boolean <- greater-than column, right
break-if done?
print screen, 32/space
space:character <- copy 32/space
print screen, space
column <- add column, 1
loop
}
@ -284,7 +286,8 @@ recipe render-code screen:address:screen, s:address:array:character, left:number
at-right?:boolean <- equal column, right
break-unless at-right?
# print wrap icon
print screen, 8617/loop-back-to-left, 245/grey
wrap-icon:character <- copy 8617/loop-back-to-left
print screen, wrap-icon, 245/grey
column <- copy left
row <- add row, 1
screen <- move-cursor screen, row, column
@ -299,7 +302,8 @@ recipe render-code screen:address:screen, s:address:array:character, left:number
{
done?:boolean <- greater-than column, right
break-if done?
print screen, 32/space
space:character <- copy 32/space
print screen, space
column <- add column, 1
loop
}

15
sandbox/005-sandbox.mu
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@ -234,7 +234,8 @@ recipe render-sandboxes screen:address:screen, sandbox:address:sandbox-data, lef
row <- add row, 1
screen <- move-cursor screen, row, left
clear-line-delimited screen, left, right
print screen, 120/x, 245/grey
delete-icon:character <- copy 120/x
print screen, delete-icon, 245/grey
# save menu row so we can detect clicks to it later
starting-row:address:number <- get-address *sandbox, starting-row-on-screen:offset
*starting-row <- copy row
@ -330,9 +331,11 @@ recipe render-screen screen:address:screen, sandbox-screen:address:screen, left:
column <- copy left
screen <- move-cursor screen, row, column
# initial leader for each row: two spaces and a '.'
print screen, 32/space, 245/grey
print screen, 32/space, 245/grey
print screen, 46/full-stop, 245/grey
space:character <- copy 32/space
print screen, space, 245/grey
print screen, space, 245/grey
full-stop:character <- copy 46/period
print screen, full-stop, 245/grey
column <- add left, 3
{
# print row
@ -353,13 +356,13 @@ recipe render-screen screen:address:screen, sandbox-screen:address:screen, left:
loop
}
# print final '.'
print screen, 46/full-stop, 245/grey
print screen, full-stop, 245/grey
column <- add column, 1
{
# clear rest of current line
line-done?:boolean <- greater-than column, right
break-if line-done?
print screen, 32/space
print screen, space
column <- add column, 1
loop
}

5
sandbox/009-sandbox-trace.mu
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@ -25,7 +25,8 @@ scenario sandbox-click-on-code-toggles-app-trace [
]
run [
event-loop screen:address:screen, console:address:console, 2:address:programming-environment-data
print screen:address:screen, 9251/␣/cursor
4:character/cursor-icon <- copy 9251/␣
print screen:address:screen, 4:character/cursor-icon
]
# trace now printed and cursor shouldn't have budged
screen-should-contain [
@ -54,7 +55,7 @@ scenario sandbox-click-on-code-toggles-app-trace [
]
run [
event-loop screen:address:screen, console:address:console, 2:address:programming-environment-data
print screen:address:screen, 9251/␣/cursor
print screen:address:screen, 4:character/cursor-icon
]
# trace hidden again
screen-should-contain [

3
screen.mu
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@ -5,7 +5,8 @@
recipe main [
open-console
print 0/screen, 97/a, 2/red
10:character <- copy 97/a
print 0/screen, 10:character/a, 2/red
1:number/raw, 2:number/raw <- cursor-position 0/screen
wait-for-event 0/console
clear-screen 0/screen