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oo::class create town {
constructor {} {
my variable power foods buildings
set power 0
set foods {}
set buildings {}
}
method status {} {
my variable power foods buildings
set houses [lmap b $buildings {
expr {[$b is house] ? $b : [continue]}
}]
set popn 0
foreach h $houses {incr popn [$h occupancy]}
return "Town power: $power, food: [llength $foods], houses: [llength $houses], popn: $popn/[expr [llength $houses] * 4]"
}
method update {} {
my variable power buildings
set power [expr max($power - 2, 0)]
foreach b $buildings {$b update [self]}
}
method crank {} {
my variable power
incr power 10
puts "You turn the crank awhile, the lights flicker."
}
method takefood {} {
my variable foods
if [expr [llength $foods] > 0] {
set choice [expr int(rand() * [llength $foods])]
set food [lindex $foods $choice]
set foods [lreplace $foods $choice $choice]
puts "You take [$food title] from the town's food supply."
return $food
}
}
method putfood {food} {
my variable foods
puts "You add [$food title] to the town's food supply."
lappend foods $food
}
method build {what} {
my variable buildings
switch $what {
house {lappend buildings [house new]}
}
}
}
oo::class create building {
method is {{what {}}} {
my variable type
if {$what != {}} {
return [expr {$type == $what}]
} else {
return $type
}
}
}
oo::class create house {
superclass building
constructor {} {
my variable type occupants
set type house
set occupants 0
puts "You put up a wooden cabin."
}
method occupancy {} {
my variable occupants
return $occupants
}
method update {town} {
my variable occupants
if {$occupants < 4 && [expr int(rand() * 6) == 0]} {
incr occupants
}
}
}
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