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<pre id='vimCodeElement'>
<span class="Comment"># Editor widget: takes a string and screen coordinates, modifying them in place.</span>
<span class="muRecipe">recipe</span> main [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
open-console
width:number<span class="Special"> <- </span>display-width
height:number<span class="Special"> <- </span>display-height
divider:number, _<span class="Special"> <- </span>divide-with-remainder width:number, <span class="Constant">2:literal</span>
draw-vertical <span class="Constant">0:literal/screen</span>, divider:number, <span class="Constant">0:literal/top</span>, height:number
in:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abcdef</span>
<span class="Constant">def</span>
<span class="Constant">ghi</span>
<span class="Constant">jkl</span>
<span class="Constant">]</span>
editor:address:editor-data<span class="Special"> <- </span>new-editor in:address:array:character, <span class="Constant">0:literal/screen</span>, <span class="Constant">0:literal/top</span>, <span class="Constant">0:literal/left</span>, divider:number/right
event-loop <span class="Constant">0:literal/screen</span>, <span class="Constant">0:literal/events</span>, editor:address:editor-data
close-console
]
<span class="muScenario">scenario</span> editor-initially-prints-string-to-screen [
assume-screen <span class="Constant">10:literal/width</span>, <span class="Constant">5:literal/height</span>
run [
s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span>
new-editor s:address:array:character, screen:address, <span class="Constant">0:literal/top</span>, <span class="Constant">0:literal/left</span>, <span class="Constant">5:literal/right</span>
]
screen-should-contain [
<span class="Constant"> .abc .</span>
<span class="Constant"> . .</span>
]
]
<span class="SalientComment">## In which we introduce the editor data structure, and show how it displays</span>
<span class="SalientComment">## text to the screen.</span>
container editor-data [
<span class="Comment"># doubly linked list of characters</span>
data:address:duplex-list
<span class="Comment"># location of top-left of screen inside data (scrolling)</span>
top-of-screen:address:duplex-list
<span class="Comment"># location of cursor inside data</span>
cursor:address:duplex-list
screen:address:screen
<span class="Comment"># raw bounds of display area on screen</span>
top:number
left:number
bottom:number
right:number
<span class="Comment"># raw screen coordinates of cursor</span>
cursor-row:number
cursor-column:number
]
<span class="Comment"># editor:address, screen:address <- new-editor s:address:array:character, screen:address, top:number, left:number, bottom:number</span>
<span class="Comment"># creates a new editor widget and renders its initial appearance to screen.</span>
<span class="Comment"># top/left/right constrain the screen area available to the new editor.</span>
<span class="Comment"># right is exclusive.</span>
<span class="muRecipe">recipe</span> new-editor [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
s:address:array:character<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Comment"># no clipping of bounds</span>
top:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
right:number<span class="Special"> <- </span>subtract right:number, <span class="Constant">1:literal</span>
result:address:editor-data<span class="Special"> <- </span>new editor-data:type
<span class="Comment"># initialize screen-related fields</span>
sc:address:address:screen<span class="Special"> <- </span>get-address result:address:editor-data/deref, screen:offset
sc:address:address:screen/deref<span class="Special"> <- </span>copy screen:address
x:address:number<span class="Special"> <- </span>get-address result:address:editor-data/deref, top:offset
x:address:number/deref<span class="Special"> <- </span>copy top:number
x:address:number<span class="Special"> <- </span>get-address result:address:editor-data/deref, left:offset
x:address:number/deref<span class="Special"> <- </span>copy left:number
x:address:number<span class="Special"> <- </span>get-address result:address:editor-data/deref, right:offset
x:address:number/deref<span class="Special"> <- </span>copy right:number
<span class="Comment"># initialize bottom to top for starters</span>
x:address:number<span class="Special"> <- </span>get-address result:address:editor-data/deref, bottom:offset
x:address:number/deref<span class="Special"> <- </span>copy top:number
<span class="Comment"># initialize cursor</span>
x:address:number<span class="Special"> <- </span>get-address result:address:editor-data/deref, cursor-row:offset
x:address:number/deref<span class="Special"> <- </span>copy top:number
x:address:number<span class="Special"> <- </span>get-address result:address:editor-data/deref, cursor-column:offset
x:address:number/deref<span class="Special"> <- </span>copy left:number
<span class="Comment"># early exit if s is empty</span>
<span class="muControl">reply-unless</span> s:address:array:character, result:address:editor-data
len:number<span class="Special"> <- </span>length s:address:array:character/deref
<span class="muControl">reply-unless</span> len:number, result:address:editor-data
idx:number<span class="Special"> <- </span>copy <span class="Constant">0:literal</span>
<span class="Comment"># s is guaranteed to have at least one character, so initialize result's</span>
<span class="Comment"># duplex-list</span>
init:address:address:duplex-list<span class="Special"> <- </span>get-address result:address:editor-data/deref, top-of-screen:offset
init:address:address:duplex-list/deref<span class="Special"> <- </span>copy <span class="Constant">0:literal</span>
c:character<span class="Special"> <- </span>index s:address:array:character/deref, idx:number
idx:number<span class="Special"> <- </span>add idx:number, <span class="Constant">1:literal</span>
init:address:address:duplex-list/deref<span class="Special"> <- </span>push c:character, init:address:address:duplex-list/deref
curr:address:duplex-list<span class="Special"> <- </span>copy init:address:address:duplex-list/deref
<span class="Comment"># now we can start appending the rest, character by character</span>
<span class="Delimiter">{</span>
<span class="CommentedCode">#? $print idx:number, [ vs ], len:number, [ </span>
<span class="CommentedCode">#? ] #? 1</span>
done?:boolean<span class="Special"> <- </span>greater-or-equal idx:number, len:number
<span class="muControl">break-if</span> done?:boolean
c:character<span class="Special"> <- </span>index s:address:array:character/deref, idx:number
<span class="CommentedCode">#? $print [aa: ], c:character, [ </span>
<span class="CommentedCode">#? ] #? 1</span>
insert-duplex c:character, curr:address:duplex-list
<span class="Comment"># next iter</span>
curr:address:duplex-list<span class="Special"> <- </span>next-duplex curr:address:duplex-list
idx:number<span class="Special"> <- </span>add idx:number, <span class="Constant">1:literal</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
<span class="Comment"># initialize cursor to top of screen</span>
y:address:address:duplex-list<span class="Special"> <- </span>get-address result:address:editor-data/deref, cursor:offset
y:address:address:duplex-list/deref<span class="Special"> <- </span>copy init:address:address:duplex-list/deref
<span class="Comment"># perform initial rendering to screen</span>
bottom:address:number<span class="Special"> <- </span>get-address result:address:editor-data/deref, bottom:offset
bottom:address:number/deref, screen:address<span class="Special"> <- </span>render result:address:editor-data, screen:address, top:number, left:number, right:number
<span class="muControl">reply</span> result:address:editor-data
]
<span class="muScenario">scenario</span> editor-initializes-without-data [
assume-screen <span class="Constant">5:literal/width</span>, <span class="Constant">3:literal/height</span>
run [
1:address:editor-data<span class="Special"> <- </span>new-editor <span class="Constant">0:literal/data</span>, screen:address, <span class="Constant">1:literal/top</span>, <span class="Constant">2:literal/left</span>, <span class="Constant">5:literal/right</span>
2:editor-data<span class="Special"> <- </span>copy 1:address:editor-data/deref
]
memory-should-contain [
2<span class="Special"> <- </span>0 <span class="Comment"># data</span>
3<span class="Special"> <- </span>0 <span class="Comment"># pointer into data to top of screen</span>
4<span class="Special"> <- </span>0 <span class="Comment"># pointer into data to cursor</span>
<span class="Comment"># 5 <- screen</span>
6<span class="Special"> <- </span>1 <span class="Comment"># top</span>
7<span class="Special"> <- </span>2 <span class="Comment"># left</span>
8<span class="Special"> <- </span>1 <span class="Comment"># bottom</span>
9<span class="Special"> <- </span>4 <span class="Comment"># right (inclusive)</span>
10<span class="Special"> <- </span>1 <span class="Comment"># cursor row</span>
11<span class="Special"> <- </span>2 <span class="Comment"># cursor column</span>
]
screen-should-contain [
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
]
]
<span class="muRecipe">recipe</span> render [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
top:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
screen-height:number<span class="Special"> <- </span>screen-height screen:address
right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
cursor:address:duplex-list<span class="Special"> <- </span>get editor:address:editor-data/deref, cursor:offset
<span class="Comment"># traversing editor</span>
curr:address:duplex-list<span class="Special"> <- </span>get editor:address:editor-data/deref, top-of-screen:offset
<span class="Comment"># traversing screen</span>
row:number<span class="Special"> <- </span>copy top:number
column:number<span class="Special"> <- </span>copy left:number
move-cursor screen:address, row:number, column:number
<span class="Delimiter">{</span>
<span class="Constant"> +next-character</span>
<span class="CommentedCode">#? $print curr:address:duplex-list, [ </span>
<span class="CommentedCode">#? ] #? 1</span>
<span class="muControl">break-unless</span> curr:address:duplex-list
off-screen?:boolean<span class="Special"> <- </span>greater-or-equal row:number, screen-height:number
<span class="muControl">break-if</span> off-screen?:boolean
<span class="Delimiter">{</span>
at-cursor?:boolean<span class="Special"> <- </span>equal curr:address:duplex-list, cursor:address:duplex-list
<span class="muControl">break-unless</span> at-cursor?:boolean
cursor-row:number<span class="Special"> <- </span>copy row:number
cursor-column:number<span class="Special"> <- </span>copy column:number
<span class="Delimiter">}</span>
c:character<span class="Special"> <- </span>get curr:address:duplex-list/deref, value:offset
<span class="Delimiter">{</span>
<span class="Comment"># newline? move to left rather than 0</span>
newline?:boolean<span class="Special"> <- </span>equal c:character, <span class="Constant">10:literal/newline</span>
<span class="muControl">break-unless</span> newline?:boolean
row:number<span class="Special"> <- </span>add row:number, <span class="Constant">1:literal</span>
column:number<span class="Special"> <- </span>copy left:number
move-cursor screen:address, row:number, column:number
curr:address:duplex-list<span class="Special"> <- </span>next-duplex curr:address:duplex-list
<span class="muControl">loop</span> <span class="Constant">+next-character:label</span>
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="Comment"># at right? more than one letter left in the line? wrap</span>
at-right?:boolean<span class="Special"> <- </span>equal column:number, right:number
<span class="muControl">break-unless</span> at-right?:boolean
next-node:address:duplex-list<span class="Special"> <- </span>next-duplex curr:address:duplex-list
<span class="muControl">break-unless</span> next-node:address:duplex-list
next:character<span class="Special"> <- </span>get next-node:address:duplex-list/deref, value:offset
next-character-is-newline?:boolean<span class="Special"> <- </span>equal next:character, <span class="Constant">10:literal/newline</span>
<span class="muControl">break-if</span> next-character-is-newline?:boolean
<span class="Comment"># wrap</span>
print-character screen:address, <span class="Constant">8617:literal/loop-back-to-left</span>, <span class="Constant">245:literal/grey</span>
column:number<span class="Special"> <- </span>copy left:number
row:number<span class="Special"> <- </span>add row:number, <span class="Constant">1:literal</span>
move-cursor screen:address, row:number, column:number
<span class="Comment"># don't increment curr</span>
<span class="muControl">loop</span> <span class="Constant">+next-character:label</span>
<span class="Delimiter">}</span>
print-character screen:address, c:character
curr:address:duplex-list<span class="Special"> <- </span>next-duplex curr:address:duplex-list
column:number<span class="Special"> <- </span>add column:number, <span class="Constant">1:literal</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
move-cursor screen:address, cursor-row:number, cursor-column:number
<span class="muControl">reply</span> row:number, screen:address/same-as-ingredient:1
]
<span class="muScenario">scenario</span> editor-initially-prints-multiple-lines [
assume-screen <span class="Constant">5:literal/width</span>, <span class="Constant">3:literal/height</span>
run [
s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span>
<span class="Constant">def]</span>
new-editor s:address:array:character, screen:address, <span class="Constant">0:literal/top</span>, <span class="Constant">0:literal/left</span>, <span class="Constant">5:literal/right</span>
]
screen-should-contain [
<span class="Constant"> .abc .</span>
<span class="Constant"> .def .</span>
<span class="Constant"> . .</span>
]
]
<span class="muScenario">scenario</span> editor-initially-handles-offsets [
assume-screen <span class="Constant">5:literal/width</span>, <span class="Constant">3:literal/height</span>
run [
s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span>
new-editor s:address:array:character, screen:address, <span class="Constant">0:literal/top</span>, <span class="Constant">1:literal/left</span>, <span class="Constant">5:literal/right</span>
]
screen-should-contain [
<span class="Constant"> . abc .</span>
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
]
]
<span class="muScenario">scenario</span> editor-initially-prints-multiple-lines-at-offset [
assume-screen <span class="Constant">5:literal/width</span>, <span class="Constant">3:literal/height</span>
run [
s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc</span>
<span class="Constant">def]</span>
new-editor s:address:array:character, screen:address, <span class="Constant">0:literal/top</span>, <span class="Constant">1:literal/left</span>, <span class="Constant">5:literal/right</span>
]
screen-should-contain [
<span class="Constant"> . abc .</span>
<span class="Constant"> . def .</span>
<span class="Constant"> . .</span>
]
]
<span class="muScenario">scenario</span> editor-initially-wraps-long-lines [
assume-screen <span class="Constant">5:literal/width</span>, <span class="Constant">3:literal/height</span>
run [
s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc def]</span>
new-editor s:address:array:character, screen:address, <span class="Constant">0:literal/top</span>, <span class="Constant">0:literal/left</span>, <span class="Constant">5:literal/right</span>
]
screen-should-contain [
<span class="Constant"> .abc ↩.</span>
<span class="Constant"> .def .</span>
<span class="Constant"> . .</span>
]
screen-should-contain-in-color, <span class="Constant">245:literal/grey</span> [
<span class="Constant"> . ↩.</span>
<span class="Constant"> . .</span>
<span class="Constant"> . .</span>
]
]
<span class="SalientComment">## handling events from the keyboard and mouse</span>
<span class="muRecipe">recipe</span> event-loop [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
console:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="Constant"> +next-event</span>
e:event, console:address, found?:boolean, quit?:boolean<span class="Special"> <- </span>read-event console:address
<span class="muControl">loop-unless</span> found?:boolean
<span class="muControl">break-if</span> quit?:boolean <span class="Comment"># only in tests</span>
trace <span class="Constant">[app]</span>, <span class="Constant">[next-event]</span>
<span class="Delimiter">{</span>
t:address:touch-event<span class="Special"> <- </span>maybe-convert e:event, touch:variant
<span class="muControl">break-unless</span> t:address:touch-event
editor:address:editor-data<span class="Special"> <- </span>move-cursor-in-editor editor:address:editor-data, t:address:touch-event
<span class="muControl">loop</span> <span class="Constant">+next-event:label</span>
<span class="Delimiter">}</span>
c:address:character<span class="Special"> <- </span>maybe-convert e:event, text:variant
assert c:address:character, <span class="Constant">[event was of unknown type; neither keyboard nor mouse]</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
]
<span class="muRecipe">recipe</span> move-cursor-in-editor [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
editor:address:editor-data<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
t:address:touch-event<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
row:address:number<span class="Special"> <- </span>get-address editor:address:editor-data/deref, cursor-row:offset
row:address:number/deref<span class="Special"> <- </span>get t:address:touch-event/deref, row:offset
column:address:number<span class="Special"> <- </span>get-address editor:address:editor-data/deref, cursor-column:offset
column:address:number/deref<span class="Special"> <- </span>get t:address:touch-event/deref, column:offset
<span class="Comment"># todo: adjust 'cursor' pointer into editor data</span>
]
<span class="muScenario">scenario</span> editor-handles-empty-event-queue [
assume-screen <span class="Constant">10:literal/width</span>, <span class="Constant">5:literal/height</span>
assume-console <span class="Constant">[]</span>
run [
s:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span>
editor:address:editor-data<span class="Special"> <- </span>new-editor s:address:array:character, screen:address, <span class="Constant">0:literal/top</span>, <span class="Constant">0:literal/left</span>, <span class="Constant">5:literal/right</span>
event-loop screen:address, console:address, editor:address:editor-data
]
screen-should-contain [
<span class="Constant"> .abc .</span>
<span class="Constant"> . .</span>
]
]
<span class="muScenario">scenario</span> editor-handles-mouse-clicks [
assume-screen <span class="Constant">10:literal/width</span>, <span class="Constant">5:literal/height</span>
assume-console [
left-click 0, 1
]
run [
1:address:array:character<span class="Special"> <- </span>new <span class="Constant">[abc]</span>
2:address:editor-data<span class="Special"> <- </span>new-editor 1:address:array:character, screen:address, <span class="Constant">0:literal/top</span>, <span class="Constant">0:literal/left</span>, <span class="Constant">5:literal/right</span>
event-loop screen:address, console:address, 2:address:editor-data
3:number<span class="Special"> <- </span>get 2:address:editor-data/deref, cursor-row:offset
4:number<span class="Special"> <- </span>get 2:address:editor-data/deref, cursor-column:offset
]
screen-should-contain [
<span class="Constant"> .abc .</span>
<span class="Constant"> . .</span>
]
memory-should-contain [
3<span class="Special"> <- </span>0 <span class="Comment"># cursor is at row 0..</span>
4<span class="Special"> <- </span>1 <span class="Comment"># ..and column 1</span>
]
]
<span class="SalientComment">## helpers for drawing editor borders</span>
<span class="muRecipe">recipe</span> draw-box [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
top:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
bottom:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
color:number, color-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="Comment"># default color to white</span>
<span class="muControl">break-if</span> color-found?:boolean
color:number<span class="Special"> <- </span>copy <span class="Constant">245:literal/grey</span>
<span class="Delimiter">}</span>
<span class="Comment"># top border</span>
draw-horizontal screen:address, top:number, left:number, right:number, color:number
draw-horizontal screen:address, bottom:number, left:number, right:number, color:number
draw-vertical screen:address, left:number, top:number, bottom:number, color:number
draw-vertical screen:address, right:number, top:number, bottom:number, color:number
draw-top-left screen:address, top:number, left:number, color:number
draw-top-right screen:address, top:number, right:number, color:number
draw-bottom-left screen:address, bottom:number, left:number, color:number
draw-bottom-right screen:address, bottom:number, right:number, color:number
<span class="Comment"># position cursor inside box</span>
move-cursor screen:address, top:number, left:number
cursor-down screen:address
cursor-right screen:address
]
<span class="muRecipe">recipe</span> draw-horizontal [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
row:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
x:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
color:number, color-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="Comment"># default color to white</span>
<span class="muControl">break-if</span> color-found?:boolean
color:number<span class="Special"> <- </span>copy <span class="Constant">245:literal/grey</span>
<span class="Delimiter">}</span>
move-cursor screen:address, row:number, x:number
<span class="Delimiter">{</span>
continue?:boolean<span class="Special"> <- </span>lesser-than x:number, right:number
<span class="muControl">break-unless</span> continue?:boolean
print-character screen:address, <span class="Constant">9472:literal/horizontal</span>, color:number
x:number<span class="Special"> <- </span>add x:number, <span class="Constant">1:literal</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
]
<span class="muRecipe">recipe</span> draw-vertical [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
col:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
x:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
bottom:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
color:number, color-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="Comment"># default color to white</span>
<span class="muControl">break-if</span> color-found?:boolean
color:number<span class="Special"> <- </span>copy <span class="Constant">245:literal/grey</span>
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
continue?:boolean<span class="Special"> <- </span>lesser-than x:number, bottom:number
<span class="muControl">break-unless</span> continue?:boolean
move-cursor screen:address, x:number, col:number
print-character screen:address, <span class="Constant">9474:literal/vertical</span>, color:number
x:number<span class="Special"> <- </span>add x:number, <span class="Constant">1:literal</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
]
<span class="muRecipe">recipe</span> draw-top-left [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
top:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
color:number, color-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="Comment"># default color to white</span>
<span class="muControl">break-if</span> color-found?:boolean
color:number<span class="Special"> <- </span>copy <span class="Constant">245:literal/grey</span>
<span class="Delimiter">}</span>
move-cursor screen:address, top:number, left:number
print-character screen:address, <span class="Constant">9484:literal/down-right</span>, color:number
]
<span class="muRecipe">recipe</span> draw-top-right [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
top:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
color:number, color-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="Comment"># default color to white</span>
<span class="muControl">break-if</span> color-found?:boolean
color:number<span class="Special"> <- </span>copy <span class="Constant">245:literal/grey</span>
<span class="Delimiter">}</span>
move-cursor screen:address, top:number, right:number
print-character screen:address, <span class="Constant">9488:literal/down-left</span>, color:number
]
<span class="muRecipe">recipe</span> draw-bottom-left [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
bottom:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
left:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
color:number, color-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="Comment"># default color to white</span>
<span class="muControl">break-if</span> color-found?:boolean
color:number<span class="Special"> <- </span>copy <span class="Constant">245:literal/grey</span>
<span class="Delimiter">}</span>
move-cursor screen:address, bottom:number, left:number
print-character screen:address, <span class="Constant">9492:literal/up-right</span>, color:number
]
<span class="muRecipe">recipe</span> draw-bottom-right [
<span class="Constant">default-space</span>:address:array:location<span class="Special"> <- </span>new location:type, <span class="Constant">30:literal</span>
screen:address<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
bottom:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
right:number<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
color:number, color-found?:boolean<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="Comment"># default color to white</span>
<span class="muControl">break-if</span> color-found?:boolean
color:number<span class="Special"> <- </span>copy <span class="Constant">245:literal/grey</span>
<span class="Delimiter">}</span>
move-cursor screen:address, bottom:number, right:number
print-character screen:address, <span class="Constant">9496:literal/up-left</span>, color:number
]
</pre>
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