Difference between revisions of "The Script Programming Language"

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[[The Original SCI Documentation]]<br />
+
[[Official SCI Documentation]]<br />
  
 
<div align="center"><span style="font-size: 22pt">The Script Programming Language</span><br />
 
<div align="center"><span style="font-size: 22pt">The Script Programming Language</span><br />
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Date: 4 April 1988</div>
 
Date: 4 April 1988</div>
  
 +
<blockquote>
 +
*[[The Script Programming Language/Introduction | Introduction]]
 
*[[The Script Programming Language/Files | Files]]
 
*[[The Script Programming Language/Files | Files]]
 
*[[The Script Programming Language/Definitions | Definitions]]
 
*[[The Script Programming Language/Definitions | Definitions]]
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*[[The Script Programming Language/Procedures | Procedures]]
 
*[[The Script Programming Language/Procedures | Procedures]]
 
*[[The Script Programming Language/Using SC | Using SC]]
 
*[[The Script Programming Language/Using SC | Using SC]]
 
+
*[[The Script Programming Language/Index | Index]]
&nbsp;
 
 
 
==<br /> Introduction ==
 
 
 
The Script adventure game language is an object-oriented language with a Lisp-like syntax. It is compiled by the sc compiler into the pseudo-code which is used by the interpreter, sci.
 
 
 
We will begin our discussion of the language with its basic Lisp-like characteristics, then go on to the object-oriented parts of the language.
 
 
 
As is Lisp, Script is based on parenthesized expressions which return values. An expression is of the form
 
 
 
<blockquote>
 
<div class="CodeBlockHeader">Code:</div>
 
<syntaxhighlight lang="sci">
 
(procedure [parameter parameter ...]).
 
</syntaxhighlight>
 
 
</blockquote>
 
</blockquote>
  
The parameters to a procedure may themselves be expressions to be evaluated, and may be nested until you lose track of the parentheses.
+
<div align="center">
 +
Chapter:
 +
[[The Script Programming Language/Introduction|1]] |
 +
[[The Script Programming Language/Files|2]] |
 +
[[The Script Programming Language/Definitions|3]] |
 +
[[The Script Programming Language/Data Types and Variables|4]] |
 +
[[The Script Programming Language/Primitive Procedures|5]] |
 +
[[The Script Programming Language/Control Flow|6]] |
 +
[[The Script Programming Language/Procedures|7]] |
 +
[[The Script Programming Language/Using SC|8]] |
 +
[[The Script Programming Language/Index|Index]]
 +
</div><br />
  
Unlike Lisp, the procedure itself may NOT be the result of an evaluation. An example of an expression is
+
* [[Media:SCRIPT.pdf|Download The Script Programming Language in PDF Form]]<br />
  
<blockquote>
 
<div class="CodeBlockHeader">Code:</div>
 
<syntaxhighlight lang="sci">
 
(+ (- y 2) (/ x 3))
 
</syntaxhighlight>
 
</blockquote>
 
  
which would be written in infix notation as
+
&nbsp;
  
<blockquote>
+
<span style="float: left"><span class="Inactive">&lt; Previous: </span></span><span style="float: right">[[The Script Programming Language/Introduction|Next: Introduction &gt;]]</span>
<div class="CodeBlockHeader">Code:</div>
 
<syntaxhighlight lang="sci">
 
      (y - 2) + (x / 3).
 
</syntaxhighlight>
 
</blockquote>
 
  
All expressions are guaranteed to be evaluated from left to right. Thus,
+
&nbsp;
 
 
<blockquote>
 
<div class="CodeBlockHeader">Code:</div>
 
<syntaxhighlight lang="sci">
 
(= x 4)
 
(= y (/ (+= x 4) (/= x 2)))
 
</syntaxhighlight>
 
</blockquote>
 
 
 
will result in y = 2 and x = 4.
 
 
 
Comments in Script begin with a semi-colon, ';', and continue to the end of the line.
 
 
 
== <br />Files ==
 
 
 
== <br /> Definitions ==
 
 
 
==<br /> Data Types and Variables ==
 
 
 
== <br /> Primitive Procedures ==
 
 
 
==<br /> Control Flow ==
 
 
 
==<br /> Procedures ==
 
 
 
==<br /> Using SC ==
 
 
 
The sc compiler is invoked with the command
 
 
 
<blockquote>
 
<div class="CodeBlockHeader">Code:</div>
 
<syntaxhighlight lang="sci">
 
sc file_spec [file_spec] [options]
 
</syntaxhighlight>
 
</blockquote>
 
 
 
Any number of file specifications may be entered on the command line, and a file specification may include wild-card names.
 
 
 
===<br /> Options ===
 
 
====<br /> -l ====
 
<blockquote>Generate an assembly language code listing for the file. This is useful when using the built-in debugger of sci, which lists only the assembly language code, not the source. When compiling filename.sc, the list file is named filename.sl</blockquote>
 
 
 
====<br /> -n ====
 
<blockquote>Turns off 'auto-naming' of objects. As described in Script Classes for Adventure Games, each object has a name, or 'print-string' property, which is how to represent the object textually. Unless the property is explicitly set, the compiler will generate the value for this property automatically, using the object's symbol string for the name. The object names, however, take up space in the heap. While they are useful (almost vital) for debugging, if you're running out of heap in a room, it might help to compile with the -n option to leave the names out.</blockquote>
 
 
====<br /> -oout-dir ====
 
<blockquote>Set the directory for the output file (script.nnn) to out-dir.</blockquote>
 
 
====<br /> -v ====
 
<blockquote>Turns on verbose mode, which prints the number of bytes occupied by various parts of the output file (code, objects, text, etc.).</blockquote>
 
 
====<br /> -z ====
 
<blockquote>Turn off optimization. Not a particularly useful option except for those of us who must maintain the compiler.</blockquote>
 
 
 
== <br />Index ==
 
  
!  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
+
[[Category:SCI Documentation]]
!= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14<br />
+
[[Category:Scripting]]
+  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
++ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
+= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
-  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
-- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
-= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
<nowiki>*</nowiki>  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
<nowiki>*=</nowiki> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
/  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
/= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
^  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
^= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
<  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14<br />
 
<< . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
<<=  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
<= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14<br />
 
=  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
== . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14<br />
 
>  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14<br />
 
>= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14<br />
 
>> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
>>=  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
&  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
&= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
&rest  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20<br />
 
|  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
|= . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
~  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
and  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14<br />
 
arithmetic primitives  . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
array  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9<br />
 
arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  9<br />
 
assignment primitives  . . . . . . . . . . . . . . . . . . . . . . . . . 15<br />
 
base.sh  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4<br />
 
boolean primitives . . . . . . . . . . . . . . . . . . . . . . . . . . . 14<br />
 
break  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17<br />
 
breakif  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17<br />
 
characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12<br />
 
classdef . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4<br />
 
classtbl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4<br />
 
cond . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16<br />
 
conditionals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16<br />
 
contif . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18<br />
 
continue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18<br />
 
define . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6<br />
 
enum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6<br />
 
extern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21<br />
 
for  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17<br />
 
global . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8<br />
 
if . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16<br />
 
include  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5<br />
 
iteration  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17<br />
 
kernal.sh  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4<br />
 
local  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8<br />
 
mod  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13<br />
 
not  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14<br />
 
numbers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8<br />
 
options  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23<br />
 
or . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14<br />
 
pointers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10<br />
 
procedure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19, 20<br />
 
public . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22<br />
 
repeat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17<br />
 
return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16<br />
 
sc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23<br />
 
script#  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5<br />
 
selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4<br />
 
<nowiki>    literal</nowiki> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12<br />
 
SINCLUDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5<br />
 
switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17<br />
 
synonyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7<br />
 
text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10<br />
 
variables  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8<br />
 
<nowiki>    global</nowiki>  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8<br />
 
<nowiki>    local</nowiki> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8<br />
 
<nowiki>    temporary</nowiki> . . . . . . . . . . . . . . . . . . . . . . . . . . .  8, 19<br />
 
vocab.000  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4<br />
 
while  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17<br />
 
word strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11<br />
 

Latest revision as of 20:12, 2 December 2015