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#!/usr/bin/python
import urwid
import sys
import gringo
class Board:
def __init__(self, plan):
self.display = urwid.Text("", align='center')
self.plan = plan
self.current = plan.first()
self.update()
def next(self, button):
self.current = self.plan.next(self.current)
self.update()
def prev(self, button):
self.current = self.plan.prev(self.current)
self.update()
def update(self):
brd = [[" "] * (self.plan.width * 2 + 1) for _ in range(0, (self.plan.height * 2 + 1))]
for (x, y) in self.plan.field:
brd[2 * y + 1][2 * x + 0] = "|"
brd[2 * y + 1][2 * x + 2] = "|"
for (x, y) in self.plan.field:
brd[2 * y + 0][2 * x + 0] = "-"
brd[2 * y + 0][2 * x + 1] = "-"
brd[2 * y + 0][2 * x + 2] = "-"
brd[2 * y + 2][2 * x + 0] = "-"
brd[2 * y + 2][2 * x + 1] = "-"
brd[2 * y + 2][2 * x + 2] = "-"
for (x, y) in self.plan.steps(self.current):
brd[2 * y + 1][2 * x + 1] = "o"
j = self.plan.jumped(self.current)
if j != None:
(x, y) = j
brd[2 * y + 1][2 * x + 1] = ("blue", "o")
j = self.plan.jump(self.current)
if j != None:
(x, y, xx, yy) = j
brd[2 * y + 1][2 * x + 1] = ("red", "o")
brd[2 * yy + 1][2 * xx + 1] = ("green", " ")
markup = []
for row in brd:
markup.extend(row)
markup.append("\n")
self.display.set_text(markup)
class MainWindow:
def __init__(self):
self.loop = None
def exit(self, button):
raise urwid.ExitMainLoop()
def run(self, plan):
c = Board(plan)
ba = urwid.Button("previous")
bb = urwid.Button("quit")
bc = urwid.Button("next")
urwid.connect_signal(bb, 'click', self.exit)
urwid.connect_signal(bc, 'click', c.next)
urwid.connect_signal(ba, 'click', c.prev)
sf = urwid.Text("")
b = urwid.Columns([sf, ('fixed', len(bc.label) + 4, bc), ('fixed', len(ba.label) + 4, ba), ('fixed', len(bb.label) + 4, bb), sf], 1)
f = urwid.Frame(urwid.Filler(c.display), None, b, 'footer')
palette = [
('red', 'black', 'light red'),
('green', 'black', 'light green'),
('blue', 'black', 'light blue'), ]
self.loop = urwid.MainLoop(f, palette)
self.loop.run()
class Plan:
def __init__(self, field, init, jumps):
mx = min([x for (x, y) in field])
my = min([y for (x, y) in field])
self.width = max([x for (x, y) in field]) - mx + 1
self.height = max([y for (x, y) in field]) - my + 1
self.field = [ (x - mx, y - my) for (x, y) in field ]
pjumps = {}
for (t, k) in jumps.items(): pjumps[t] = [ (x - mx, y - my, xx - mx, yy - my) for (x, y, xx, yy) in k ]
self._jumps = []
self._steps = []
self._steps.append([ (x - mx, y - my) for (x, y) in init ])
for t in sorted(pjumps.keys()):
for (x, y, xx, yy) in pjumps[t]:
self._jumps.append((x, y, xx, yy))
self._steps.append(self._steps[-1][:])
self._steps[-1].append((xx, yy))
self._steps[-1].remove((x, y))
self._steps[-1].remove(((x + xx) // 2, (y + yy) // 2))
def jump(self, i):
return self._jumps[i] if i < len(self._jumps) else None
def jumped(self, i):
return None if i <= 0 else self.jump(i - 1)[2:]
def steps(self, i):
return self._steps[i]
def next(self, i):
return i + 1 if i + 1 < len(self._steps) else i
def prev(self, i):
return i - 1 if i - 1 >= 0 else i
def first(self):
return 0
c = gringo.Control()
for f in sys.argv[1:]: c.load(f)
def make_on_model(field, init, jumps):
sx = { "east": 2, "west": -2, "north": 0, "south": 0 }
sy = { "east": 0, "west": 0, "north": -2, "south": 2 }
def on_model(m):
for atom in m.atoms(gringo.Model.ATOMS):
if atom.name() == "field" and len(atom.args()) == 2:
x, y = atom.args()
field.append((x, y))
elif atom.name() == "stone" and len(atom.args()) == 2:
x, y = atom.args()
init.append((x, y))
elif atom.name() == "jump" and len(atom.args()) == 4:
ox, oy, d, t = atom.args()
jumps.setdefault(t, []).append((ox, oy, ox + sx[str(d)], oy + sy[str(d)]))
return False
return on_model
t, field, init, jumps = 0, [], [], {}
on_model = make_on_model(field, init, jumps)
c.ground([("base", [])])
while True:
t += 1
c.ground([("cumulative", [t])])
c.release_external(gringo.Fun("query", [t-1]))
c.assign_external(gringo.Fun("query", [t]), True)
if c.solve(None, on_model) == gringo.SolveResult.SAT:
break
MainWindow().run(Plan(field, init, jumps))
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