Richard Suchenwirth 2004-09-16 - Some tweaks to
Rush Hour to make it play well on my
iPaq:
set msg "Rush Hour
by Keith Vetter, September 2004
iPaq port: R. Suchenwirth
Rush Hour is a sliding block puzzle created by Nob Yoshigahara, and is known by numerous other names\
such as \"Car Jam\" and \"Traffic Jam\".
The object of the game is to move the red block out of the grid; but to do so you must move the other\
blocks out of the way."
# http://www.puzzles.com/products/rushhour.htm
# gtlevel: http://alpha.luc.ac.be/Research/Algebra/Members/Gtlevel/gtlevel.html
#
package require Tk
set L(1) {{v 2 3 2} {h 3 0 0} {v 2 0 4} {v 3 1 5} {h 3 2 1} \
{v 2 4 0} {h 3 5 1} {h 2 5 4}}
set L(2) {{v 2 3 2} {h 3 0 3} {h 3 2 2} {v 2 2 5} {v 2 3 3} {h 2 4 4}}
set L(3) {{v 2 4 2} {v 2 0 0} {v 2 0 1} {h 2 0 2} {h 2 0 4} {h 3 1 2} \
{v 2 2 0} {h 2 2 1} {v 3 2 3} {h 2 3 4} {h 2 4 0} {h 3 5 3}}
set L(4) {{v 2 3 2} {v 3 0 3} {h 2 0 4} {h 3 2 0} {v 3 1 5} {v 2 3 0} \
{h 2 3 3} {h 3 5 0}}
set L(5) {{v 2 2 2} {v 2 0 1} {h 2 0 2} {h 2 1 2} {v 2 0 4} {v 2 2 3} \
{h 2 3 0} {h 2 3 4} {v 2 4 0} {h 2 4 2} {h 2 5 2} {v 2 4 5}}
set L(6) {{v 2 2 2} {v 2 1 0} {h 2 1 1} {h 2 1 3} {v 2 2 3} {v 3 2 4} \
{h 2 3 0} {h 2 4 2}}
set L(7) {{v 2 3 2} {v 3 0 5} {h 3 2 0} {v 3 2 3} {h 2 3 0} {v 2 4 0} {h 3 5 1}}
set L(8) {{v 2 3 2} {v 2 0 0} {h 3 0 1} {v 2 0 4} {v 2 0 5} {h 2 1 2} \
{v 3 2 3} {h 2 2 4} {h 2 3 0} {v 2 4 0} {v 2 4 1} {h 2 4 4} \
{h 3 5 2}}
set L(9) {{v 2 4 2} {v 2 0 1} {h 3 0 3} {v 2 1 3} {v 3 1 4} {h 2 2 0} \
{v 2 2 5} {v 3 3 0} {h 3 3 1} {h 2 4 3} {v 2 4 5} {h 2 5 3}}
set L(10) {{v 2 3 2} {v 3 0 0} {v 2 0 1} {h 3 0 2} {v 3 0 5} {v 2 1 3} \
{h 2 2 1} {h 3 3 3} {v 2 4 0} {v 2 4 4} {h 2 5 2}}
set L(11) {{v 2 4 2} {v 2 0 0} {h 3 0 3} {v 2 1 3} {h 2 1 4} {h 2 2 4} \
{h 3 3 0} {v 2 3 3} {v 2 3 4} {v 3 3 5} {h 2 4 0} {h 2 5 3}}
set L(12) {{v 2 4 2} {v 3 0 0} {h 3 0 2} {v 2 1 3} {h 2 2 1} {v 2 2 4} \
{v 2 2 5} {h 2 3 0} {h 2 3 2} {v 2 4 3} {h 2 4 4} {h 2 5 4}}
proc Init {} {
set ::G(ccnt) 0
set ::G(banner) ""
array set ::B {w 6 h 6 exit,row 0 exit,col 2 m 5 m2 5 wall 7}
set ::B(w2) [expr {$::B(w) / 2}]
set ::B(h2) [expr {$::B(h) / 2}]
wm title . "Rush Hour"
canvas .c -width 240 -height 240 -highlightthickness 0
frame .bot -bd 2
set ::B(lvls) {}
for {set i 1} {$i <= 12} {incr i} {
set lvl "Level $i "
append lvl [expr {$i < 4 ? "Beginner" : $i < 7 ? "Intermediate" : \
$i < 10 ? "Advanced" : "Expert"}]
lappend ::B(lvls) $lvl
}
eval tk_optionMenu .lvl ::G(who) $::B(lvls)
trace variable ::G(who) w ChangeLevel
button .reset -text "Reset" -command LoadLevel
button .next -text "Level+" -command NextLevel
button .help -text "Help" -command Help
pack .bot -side bottom -fill both
pack .c -side top -fill both -expand 1
pack .lvl .reset .next -in .bot -side left -expand 1
pack .help -in .bot -side right
bind .c <Configure> {ReCenter %W %h %w}
}
proc ReCenter {W h w} { ;# Called by configure event
set h2 [expr {$h / 2}]
set w2 [expr {$w / 2}]
$W config -scrollregion [list -$w2 -$h2 $w2 $h2]
DrawBoard 1
}
proc ChangeLevel {var1 var2 op} {
if {! [scan $::G(who) "Level %d" lvl]} return
LoadLevel $lvl
}
proc NextLevel {} {
global G B
set n [lsearch $B(lvls) $G(who)]
if {$n == -1} return ;# Not found, shouldn't happen
incr n
if {$n >= [llength $B(lvls)]} {incr n -1} ;# Done them all
set G(who) [lindex $B(lvls) $n] ;# Let trace fire
}
proc LoadLevel {{lvl {}}} {
global G L
if {$lvl == {}} {set lvl $G(lvl)}
set G(state) 0 ;# Playing
set G(lvl) $lvl
set G(ccnt) [llength $L($lvl)]
set G(banner) ""
set id 0
foreach car $L($lvl) {
incr id
set G(car,$id) $car
}
DrawBoard
}
proc DrawBoard {{redraw 0}} {
global S B G
.c delete car banner banner2
if {$redraw} {
.c delete all
# Determine size of everything
set dw [expr {([winfo width .c] - 4*$B(m)) / $B(w)}]
set dh [expr {([winfo height .c] - 4*$B(m)) / $B(h)}]
set B(cell) [expr {$dw < $dh ? $dw : $dh}]
# Outer wall coordinates
foreach {t l . .} [GetCellXY 0 0] break
foreach {r b . .} [GetCellXY $B(w) $B(h)] break
foreach {x0 . x1 .} [GetCellXY $B(exit,row) $B(exit,col)] break
incr t -$B(wall) ; incr l -$B(wall)
incr r $B(wall) ; incr b $B(wall)
set xy [list $x0 $t $l $t $l $b $r $b $r $t $x1 $t]
.c create line $xy -width $B(wall) -tag wall -joinstyle miter
.c create line $x0 $t $x1 $t -width $B(wall) -tag wall -fill red \
-capstyle butt
set x [expr {($x0 + $x1) / 2}]
.c create text $x $t -anchor c -tag exit -text EXIT \
-font {Helvetica 7 bold} -fill yellow
for {set row 0} {$row < $B(h)} {incr row} {
for {set col 0} {$col < $B(w)} {incr col} {
set xy [GetCellXY $row $col]
.c create rect $xy -outline white
}
}
}
# Now draw all the cars
for {set id 1} {$id <= $G(ccnt)} {incr id} {
DrawCar $id
}
if {$G(banner) != ""} {
.c create text 0 0 -tag banner -text $G(banner) \
-font {Times 24 bold} -fill white
set xy [.c bbox banner]
.c create rect $xy -tag banner2 -fill black -outline gold -width 4
.c raise banner
}
}
proc GetCellXY {row col} {
global B
set row [expr {$row - $B(h2)}]
set col [expr {$col - $B(w2)}]
set x0 [expr {$col * $B(cell) + $B(m2)}]
set y0 [expr {$row * $B(cell) + $B(m2)}]
set x1 [expr {($col+1) * $B(cell) - $B(m2)}]
set y1 [expr {($row+1) * $B(cell) - $B(m2)}]
return [list $x0 $y0 $x1 $y1]
}
proc GetCellRowCol {x y} {
set row [expr {int(floor($y / $::B(cell)) + $::B(h2))}]
set col [expr {int(floor($x / $::B(cell)) + $::B(w2))}]
return [list $row $col]
}
proc DrawCar {id} {
.c delete car,$id
foreach {dir len row col} $::G(car,$id) break
if {$dir eq "v"} { ;# Get ending cell
set row2 [expr {$row + $len - 1}]
set col2 $col
} else {
set row2 $row
set col2 [expr {$col + $len - 1}]
}
foreach {x0 y0 . .} [GetCellXY $row $col] break ;# Get coords
foreach {. . x1 y1} [GetCellXY $row2 $col2] break
set color [expr {$id == 1 ? "red" : $dir eq "v" ? "blue" : "green"}]
.c create rect $x0 $y0 $x1 $y1 -tag [list car car,$id] -width 1 -fill $color
.c bind car,$id <Button-1> [list BDown $id %x %y]
.c bind car,$id <B1-Motion> [list BMove $id %x %y]
.c bind car,$id <ButtonRelease-1> [list BUp $id %x %y]
}
proc BDown {id x y} {
global CAR G
if {$G(state) != 0} return
unset -nocomplain CAR
set CAR(id) $id
set CAR(x) $x
set CAR(y) $y
foreach {CAR(dir) CAR(len) CAR(row) CAR(col)} $G(car,$id) break
if {$CAR(dir) eq "v"} {
for {set row [expr {$CAR(row)-1}]} {1} {incr row -1} {
if {[WhoIsIn $row $CAR(col)] != 0} break
}
set CAR(row,min) [expr {$row + 1}]
for {set row [expr {$CAR(row)+$CAR(len)}]} {1} {incr row} {
if {[WhoIsIn $row $CAR(col)] != 0} break
}
set CAR(row,max) [expr {$row - 1}]
set CAR(col,min) $CAR(col)
set CAR(col,max) $CAR(col)
} else {
set CAR(row,min) $CAR(row)
set CAR(row,max) $CAR(row)
for {set col [expr {$CAR(col)-1}]} {1} {incr col -1} {
if {[WhoIsIn $CAR(row) $col] != 0} break
}
set CAR(col,min) [expr {$col + 1}]
for {set col [expr {$CAR(col)+$CAR(len)}]} {1} {incr col} {
if {[WhoIsIn $CAR(row) $col] != 0} break
}
set CAR(col,max) [expr {$col - 1}]
}
foreach {x0 y0 . .} [GetCellXY $CAR(row,min) $CAR(col,min)] break
foreach {. . x1 y1} [GetCellXY $CAR(row,max) $CAR(col,max)] break
set CAR(xy) [list $x0 $y0 $x1 $y1]
.c itemconfig car,$id -outline white
}
proc BMove {id x y} {
global CAR
if {$::G(state) != 0} return
foreach {cx0 cy0 cx1 cy1} [.c coords car,$id] break ;# Where we are now
foreach {x0 y0 x1 y1} $CAR(xy) break ;# Limit on motion
set dx [expr {$x - $CAR(x)}]
set dy [expr {$y - $CAR(y)}]
set CAR(x) $x
set CAR(y) $y
if {$CAR(dir) eq "v"} {
set dx 0
if {$cy0 + $dy < $y0 || $cy1 + $dy > $y1} return
} else {
if {$cx0 + $dx < $x0 || $cx1 + $dx > $x1} return
set dy 0
}
.c move car,$id $dx $dy
}
proc BUp {id x y} {
global CAR G B
if {$::G(state) != 0} return
.c itemconfig car,$id -outline black
foreach {cx0 cy0 . .} [.c coords car,$id] break ;# Where we are now
set cx0 [expr {$cx0 + $::B(cell) / 2}]
set cy0 [expr {$cy0 + $::B(cell) / 2}]
foreach {row col} [GetCellRowCol $cx0 $cy0] break
#lset G(car,$id) 2 $row
set G(car,$id) [lreplace $G(car,$id) 2 2 $row]
#lset G(car,$id) 3 $col
set G(car,$id) [lreplace $G(car,$id) 3 3 $col]
DrawCar $id
if {$id == 1 && $row == $B(exit,row) && $col == $B(exit,col)} {
Win
}
}
proc WhoIsIn {row col} {
if {$row < 0 || $col < 0 || $row >= $::B(w) || $col >= $::B(h)} {return 999}
for {set i 1} {$i <= $::G(ccnt)} {incr i} { ;# Loop through all cars
foreach {dir len r c} $::G(car,$i) break;# Get where the car is
if {$dir eq "v"} {
if {$col != $c} continue
if {$row >= $r && $row < $r + $len} { return $i }
} else {
if {$row != $r} continue
if {$col >= $c && $col < $c + $len} { return $i }
}
}
return 0
}
proc Help {} {
tk_messageBox -message $::msg -title "Rush Hour Help"
}
proc Win {} {
set ::G(state) 1
set ::G(banner) " You Won! "
DrawBoard
set bg [.c cget -bg]
for {set i 0} {$i < 4} {incr i} {
foreach color [list white $bg] {
.c config -bg $color
update
after 100
}
}
.c bind banner <Button-1> NextLevel
.c bind banner2 <Button-1> NextLevel
}
Init
update
LoadLevel 1
wm geometry . 240x268+0+0
bind . <Up> {exec wish $argv0 &; exit}
Category Games 
