<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!--Converted with LaTeX2HTML 2002-2-1 (1.71) original version by: Nikos Drakos, CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> <HTML> <HEAD> <TITLE>6 Diagnostics</TITLE> <META NAME="description" CONTENT="6 Diagnostics"> <META NAME="keywords" CONTENT="ifm"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Generator" CONTENT="LaTeX2HTML v2002-2-1"> <META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"> <LINK REL="STYLESHEET" HREF="ifm.css"> <LINK REL="next" HREF="node10.htm"> <LINK REL="previous" HREF="node8.htm"> <LINK REL="up" HREF="ifm.htm"> <LINK REL="next" HREF="node10.htm"> </HEAD> <BODY > <DIV CLASS="navigation"><!--Navigation Panel--> <A NAME="tex2html300" HREF="node10.htm"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.gif"></A> <A NAME="tex2html296" HREF="ifm.htm"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.gif"></A> <A NAME="tex2html290" HREF="node8.htm"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.gif"></A> <A NAME="tex2html298" HREF="node1.htm"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html301" HREF="node10.htm">7 Other IFM Programs</A> <B> Up:</B> <A NAME="tex2html297" HREF="ifm.htm">IFM</A> <B> Previous:</B> <A NAME="tex2html291" HREF="node8.htm">5 Language</A> <B> <A NAME="tex2html299" HREF="node1.htm">Contents</A></B> <BR> <BR></DIV> <!--End of Navigation Panel--> <!--Table of Child-Links--> <A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A> <UL CLASS="ChildLinks"> <LI><A NAME="tex2html302" HREF="node9.htm#SECTION00091000000000000000"><SPAN CLASS="arabic">6</SPAN>.<SPAN CLASS="arabic">1</SPAN> Error Messages</A> <LI><A NAME="tex2html303" HREF="node9.htm#SECTION00092000000000000000"><SPAN CLASS="arabic">6</SPAN>.<SPAN CLASS="arabic">2</SPAN> Warning Messages</A> </UL> <!--End of Table of Child-Links--> <HR> <H1><A NAME="SECTION00090000000000000000"> <SPAN CLASS="arabic">6</SPAN> Diagnostics</A> </H1> <P> This section describes the possible error and warning messages which might be produced by IFM, and what they mean. Note that individual output formats may print their own errors and/or warnings. These lists only cover the standard ones. <P> <H2><A NAME="SECTION00091000000000000000"> <SPAN CLASS="arabic">6</SPAN>.<SPAN CLASS="arabic">1</SPAN> Error Messages</A> </H2> <P> Here's the list of error messages. If any errors occur, no output is produced. <P> <UL> <LI>[<TT>error: invalid repeat count</TT>] <BR> You've given a repeat count of zero or less for a string or direction, which doesn't make much sense. </LI> <LI>[<TT>error: no last room</TT>] <BR> You've given the very first room a <TT>dir</TT> clause. </LI> <LI>[<TT>error: no [type] referred to by 'last'</TT>] <BR> You've said <TT>last</TT> to refer to the last room, item or task that was defined, but none of that type of object have been defined yet. </LI> <LI>[<TT>error: no [type] referred to by 'it'</TT>] <BR> You've said <TT>it</TT> to refer to the last room, item or task tag that was mentioned in the current command, but no tags of that type of object have been mentioned. </LI> <LI>[<TT>error: [type] tag [name] already defined</TT>] <BR> You've given two similar objects the same tag name. </LI> <LI>[<TT>error: [type] tag [name] not defined</TT>] <BR> You've referred to a tag name that hasn't been defined anywhere in the input. </LI> <LI>[<TT>error: [type] tag [name] not yet defined</TT>] <BR> You're referring to a tag at a point where it hasn't yet been defined, in a situation where it must be (e.g. the room <TT>from</TT> clause, or a command that modifies attributes of a previously-defined object). </LI> <LI>[<TT>error: can't modify [name] attribute</TT>] <BR> You're attempting to modify an attribute of an object which can't be changed once it's set (e.g. a tag name). This is because it would create inconsistencies between objects. </LI> <LI>[<TT>error: can't link [name1] and [name2] - different map sections</TT>] <BR> The rooms you're trying to link are on different sections of the map, and have no spatial relation to one another. You might have forgotten to link a previous room in the list. Or you meant to use a <TT>join</TT>. </LI> <LI>[<TT>error: can't link [name] to itself without at least one direction</TT>] <BR> To link a room to itself, you need to specify at least one direction. Otherwise, the link goes nowhere. </LI> <LI>[<TT>error: links between [name1] and [name2] have differing lengths</TT>] <BR> You've defined more than one link or join between the given rooms, but given them different values for the <TT>length</TT> attribute. This isn't allowed. </LI> <LI>[<TT>error: more than one task needs to follow [task] immediately</TT>] <BR> You've given two or more tasks an identical <TT>follow</TT> tag. Only one task can ``follow'' a given task. </LI> <LI>[<TT>error: [num] cyclic task dependencies</TT>] <BR> The game isn't solvable because there's one or more chains of tasks where each must be done before the next, but the last must be done before the first. </LI> <LI>[<TT>error: variable [name] is not defined</TT>] <BR> A customization variable needed by an output format is not defined. You should only see these errors if you have modified or overridden the system initialization file. The remedy is to define the variable somewhere. </LI> </UL> <P> <H2><A NAME="SECTION00092000000000000000"> <SPAN CLASS="arabic">6</SPAN>.<SPAN CLASS="arabic">2</SPAN> Warning Messages</A> </H2> <P> Here's the list of warning messages. If only warnings occur, then output is still produced. <P> <UL> <LI>[<TT>warning: attribute [attr] ignored - no implicit link</TT>] <BR> You've given a room with no <TT>dir</TT> clause an attribute that is associated with that link (e.g.<TT> oneway</TT>). Most likely you're putting the attribute in the wrong place--if you want, say, a join to have one of these attributes, you must define it using the standalone <TT>join</TT> command instead. </LI> <LI>[<TT>warning: link from [name1] to [name2] outside grid</TT>] <BR> The destination room for a link is not in a compass direction from the last specified position. </LI> <LI>[<TT>warning: rooms [name1] and [name2] overlap</TT>] <BR> The coordinates of the specified rooms are the same. </LI> <LI>[<TT>warning: room [name] crossed by link line between [name] and [name]</TT>] <BR> A link line passes through the coordinates of a room. </LI> <LI>[<TT>warning: room [name] has multiple [dir] links</TT>] <BR> More than one link connects to the specified room in a particular direction. </LI> <LI>[<TT>warning: can't solve game ([num] tasks not done)</TT>] <BR> The game is unsolvable according to the current set of tasks. This can be due to part of the map being inaccessible, or IFM stupidly choosing the wrong order of doing things. Hopefully the latter shouldn't happen very often. </LI> <LI>[<TT>warning: can't solve game ([num] tasks ignored)</TT>] <BR> The game is unsolvable because you're explicitly ignoring tasks and/or items, using the <TT>ignore</TT> attribute. </LI> <LI>[<TT>warning: no matching style command</TT>] <BR> You've used <TT>endstyle</TT> without a matching <TT>style</TT>. You probably have too many <TT>endstyle</TT> commands. </LI> <LI>[<TT>warning: unexpected style: [name] (expected [name])</TT>] <BR> You've used <TT>endstyle</TT> with an argument that doesn't match the argument of the corresponding <TT>style</TT>. You might have missed out another <TT>endstyle</TT> somewhere, or have too many. </LI> <LI>[<TT>warning: style [name] referenced but not defined</TT>] <BR> An object in your input uses the specified style, but it isn't defined anywhere and the style definition file <TT>name.ifm</TT> doesn't exist in the search path (or if it does, it doesn't define the required style). </LI> <LI>[<TT>warning: [syntax] is obsolete - use [phrase] instead</TT>] <BR> You've used an obsolete syntax. Consult the documentation and then try the suggested alternative instead. Note that multiple uses of the same obsolete syntax only result in a single warning. </LI> </UL> <P> <DIV CLASS="navigation"><HR> <!--Navigation Panel--> <A NAME="tex2html300" HREF="node10.htm"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.gif"></A> <A NAME="tex2html296" HREF="ifm.htm"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.gif"></A> <A NAME="tex2html290" HREF="node8.htm"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.gif"></A> <A NAME="tex2html298" HREF="node1.htm"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html301" HREF="node10.htm">7 Other IFM Programs</A> <B> Up:</B> <A NAME="tex2html297" HREF="ifm.htm">IFM</A> <B> Previous:</B> <A NAME="tex2html291" HREF="node8.htm">5 Language</A> <B> <A NAME="tex2html299" HREF="node1.htm">Contents</A></B> </DIV> <!--End of Navigation Panel--> </BODY> </HTML>
