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# -*- indent-tabs-mode: nil -*-
class CanvasSampleFifteen < Gtk::VBox
PIECE_SIZE = 50
def test_win
0.upto(14) do |i|
if @board[i].nil? || @board[i].num != i
return
end
end
# dialog = Gnome::MessageBox.new("You stud, you win!", Gnome::MessageBox::INFO, "OK")
# dialog.set_modal(true)
# dialog.run_and_close()
end
def piece_event(item, event)
case event.event_type
when Gdk::Event::ENTER_NOTIFY
item.text.set({:fill_color => "white"})
when Gdk::Event::LEAVE_NOTIFY
item.text.set({:fill_color => "black"})
when Gdk::Event::BUTTON_PRESS
y = item.pos / 4
x = item.pos % 4
move = true
if (y > 0) && @board[(y - 1) * 4 + x].nil?
dx = 0.0
dy = -1.0
y -= 1
elsif (y < 3) && @board[(y + 1) * 4 + x].nil?
dx = 0.0
dy = 1.0
y += 1
elsif (x > 0) && @board[y * 4 + x - 1].nil?
dx = -1.0
dy = 0.0
x -= 1
elsif (x < 3) && @board[y * 4 + x + 1].nil?
dx = 1.0
dy = 0.0
x += 1
else
move = false
end
if move
newpos = y * 4 + x
@board[item.pos] = nil
@board[newpos] = item
item.pos = newpos
item.move(dx * PIECE_SIZE, dy * PIECE_SIZE)
test_win()
end
end
end
SCRAMBLE_MOVES = 32
def scramble
srand()
# First, find the blank spot
pos = 0
0.upto(15) do |i|
if @board[i].nil?
pos = i
break
end
end
# "Move the blank spot" around in order to scramble the pieces
0.upto(SCRAMBLE_MOVES) do
dir = rand(4).to_i
x = y = 0
if (dir == 0) && (pos > 3) # up
y = -1
elsif (dir == 1) && (pos < 12) # down
y = 1
elsif (dir == 2) && ((pos % 4) != 0) # left
x = -1
elsif (dir == 3) && ((pos % 4) != 3) # right
x = 1
else
retry
end
oldpos = pos + y * 4 + x;
@board[pos] = @board[oldpos];
@board[oldpos] = nil
@board[pos].pos = pos
@board[pos].move(-x * PIECE_SIZE, -y * PIECE_SIZE)
@canvas.update_now()
pos = oldpos
end
end
def initialize
super(false, 4)
border_width = 4
show()
alignment = Gtk::Alignment.new(0.5, 0.5, 0.0, 0.0)
pack_start(alignment, true, true, 0)
alignment.show()
frame = Gtk::Frame.new
frame.set_shadow_type(Gtk::SHADOW_IN);
alignment.add(frame)
frame.show()
# Create the canvas and board
@canvas = Gnome::Canvas.new()
@canvas.set_size_request(PIECE_SIZE * 4 + 1, PIECE_SIZE * 4 + 1)
@canvas.set_scroll_region(0, 0, PIECE_SIZE * 4 + 1, PIECE_SIZE * 4 + 1)
frame.add(@canvas)
@canvas.show()
@board = Array.new(16)
0.upto(14) do |i|
@board[i] = Piece.new(@canvas.root, {})
@board[i].setup(self, i)
end
@board[15] = nil;
# Scramble button
button = Gtk::Button.new("Scramble")
pack_start(button, false, false, 0)
button.signal_connect("clicked") do |button|
scramble()
end
button.show()
end
class Piece < Gnome::CanvasGroup
attr_reader :text, :num, :pos
attr_writer :pos
def initialize(*arg)
super(*arg)
end
def setup(app, i)
y = i / 4
x = i % 4
self.set({:x => x * PIECE_SIZE,
:y => y * PIECE_SIZE})
Gnome::CanvasRect.new(self,
{:x1 => 0.0,
:y1 => 0.0,
:x2 => PIECE_SIZE,
:y2 => PIECE_SIZE,
:fill_color => get_piece_color(x, y),
:outline_color => "black",
:width_pixels => 0})
@text = Gnome::CanvasText.new(self,
{:text => i.to_s,
:x => PIECE_SIZE / 2.0,
:y => PIECE_SIZE / 2.0,
:font => "Sans bold 24",
:anchor => Gtk::ANCHOR_CENTER,
:fill_color => "black"})
@num = i
@pos = i
self.signal_connect("event") do |item, event|
app.piece_event(item, event)
end
end
private
def get_piece_color(x, y)
r = ((4 - x) * 255) / 4;
g = ((4 - y) * 255) / 4;
b = 128;
return sprintf("#%02x%02x%02x", r, g, b)
end
end
end
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