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markom |
# ----------------------------------------------------------------------
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# PURPOSE: Class definition for handling toasters via [incr Tcl].
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#
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# AUTHOR: Michael J. McLennan Phone: (610)712-2842
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# AT&T Bell Laboratories E-mail: michael.mclennan@att.com
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#
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# RCS: $Id: Toaster.tcl,v 1.1.1.1 2002-01-16 10:24:47 markom Exp $
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# ----------------------------------------------------------------------
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# Copyright (c) 1993 AT&T Bell Laboratories
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# ======================================================================
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# Permission to use, copy, modify, and distribute this software and its
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# documentation for any purpose and without fee is hereby granted,
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# provided that the above copyright notice appear in all copies and that
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# both that the copyright notice and warranty disclaimer appear in
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# supporting documentation, and that the names of AT&T Bell Laboratories
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# any of their entities not be used in advertising or publicity
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# pertaining to distribution of the software without specific, written
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# prior permission.
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#
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# AT&T disclaims all warranties with regard to this software, including
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# all implied warranties of merchantability and fitness. In no event
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# shall AT&T be liable for any special, indirect or consequential
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# damages or any damages whatsoever resulting from loss of use, data or
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# profits, whether in an action of contract, negligence or other
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# tortuous action, arising out of or in connection with the use or
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# performance of this software.
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# ======================================================================
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itcl_class Toaster {
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inherit Appliance Hazard
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constructor {config} {}
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destructor {
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if {$crumbs > 0} {
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puts stdout "$crumbs crumbs ... what a mess!"
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}
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}
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method config {config} {}
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method toast {nslices} {
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power [expr 0.03*$heat]
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if {$nslices < 1 || $nslices > 2} {
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error "bad number of slices: should be 1 or 2"
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}
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set crumbs [expr $crumbs+$heat*$nslices]
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if {$crumbs >= $maxcrumbs} {
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accident "== FIRE! FIRE! =="
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set crumbs $maxcrumbs
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}
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return [check]
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}
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method clean {} {
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power 0.5
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set crumbs 0
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return [check]
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}
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method check {} {
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set level [expr $crumbs*100.0/$maxcrumbs]
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return [format "crumb tray: %.0f%% full" $level]
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}
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proc resize {newsize} {
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set maxcrumbs $newsize
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}
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public heat 3 {
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if {$heat < 1 || $heat > 5} {
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error "invalid setting $heat: should be 1-5"
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}
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}
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protected crumbs 0
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common maxcrumbs 40
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}
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