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<HTML><HEAD><TITLE>Answer to Exercise 6</TITLE></HEAD>
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<TABLE><TR><TD Valign="top"><IMG SRC="../icons/exercise.gif" ALT="??"><TD bgcolor="#FAA89B"><B>ANSWER TO EXERCISE 6</B><TR><TD><TD>
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Define four objects along the lines of:
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Object white_obj "white wall" compass
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with name "white" "sac" "wall", article "the", door_dir n_to
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and add the following line to <TT>Initialise</TT>:
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remove n_obj; remove e_obj; remove w_obj; remove s_obj;
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(We could even <TT>alias</TT> a new <TT>Property</TT> called <TT>white_to</TT> to be
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<TT>n_to</TT>, and then enter map directions in the source code using
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Mayan direction names.)
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As a fine point of style, turquoise (<I> yax</I>) is the world colour for
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'here', so add a grammar line to make this cause a "look'':
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Verb "turquoise" "yax" * -> Look;
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<HR>Back to <A HREF="../section10.html#ex6">the exercise in section 10</A><HR>
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