def evolve_playfield(playfield, new_pf, alpaca, verbose=False):
if playfield.min_y is None:
return
bb = BoundingBox(0, 0, 0, 0)
fit_bounding_box(alpaca, bb)
y = playfield.min_y - bb.max_dy
while y <= playfield.max_y - bb.min_dy:
x = playfield.min_x - bb.max_dx
while x <= playfield.max_x - bb.min_dx:
state_id = playfield.get(x, y)
if verbose:
print "state at (%d,%d): %s" % (x, y, state_id)
state_ast = find_state_defn(alpaca, state_id)
if verbose:
print " => %r" % state_ast
classes = state_ast.classes
rules = state_ast.rules
new_state_id = apply_rules(alpaca, playfield, x, y, rules, classes, verbose=verbose)
if new_state_id is None:
new_state_id = state_id
if verbose:
print "new state: %s" % new_state_id
new_pf.set(x, y, new_state_id)
x += 1
y += 1
def evolve_playfield(playfield, new_pf, alpaca):
# XXX TODO + 1, - 1's in here should reflect the maximum
# neighbourhood used by any rule
if playfield.min_y is None:
return
y = playfield.min_y - 1
while y <= playfield.max_y + 1:
x = playfield.min_x - 1
while x <= playfield.max_x + 1:
state_id = playfield.get(x, y)
#print "state at (%d,%d): %s" % (x, y, state_id)
state_ast = find_state_defn(alpaca, state_id)
#print " => %r" % state_ast
new_state_id = eval_rules(alpaca, playfield, x, y, state_ast.children[3])
class_decls = state_ast.children[2]
assert class_decls.type == 'MembershipDecls'
for class_decl in class_decls.children:
assert class_decl.type == 'ClassDecl'
if new_state_id is not None:
break
class_id = class_decl.value
class_ast = find_class_defn(alpaca, class_id)
new_state_id = eval_rules(alpaca, playfield, x, y, class_ast.children[0])
if new_state_id is None:
new_state_id = playfield.get(x, y)
#print "new state: %s" % new_state_id
new_pf.set(x, y, new_state_id)
x += 1
y += 1
def evolve_playfield(playfield, new_pf, alpaca, verbose=False):
if playfield.min_y is None:
return
bb = BoundingBox(0, 0, 0, 0)
fit_bounding_box(alpaca, bb)
y = playfield.min_y - bb.max_dy
while y <= playfield.max_y - bb.min_dy:
x = playfield.min_x - bb.max_dx
while x <= playfield.max_x - bb.min_dx:
state_id = playfield.get(x, y)
if verbose:
print "state at (%d,%d): %s" % (x, y, state_id)
state_ast = find_state_defn(alpaca, state_id)
if verbose:
print " => %r" % state_ast
classes = state_ast.classes
rules = state_ast.rules
new_state_id = apply_rules(alpaca,
playfield,
x,
y,
rules,
classes,
verbose=verbose)
if new_state_id is None:
new_state_id = state_id
if verbose:
print "new state: %s" % new_state_id
new_pf.set(x, y, new_state_id)
x += 1
y += 1
def eval_relation(alpaca, playfield, x, y, state_id, ast):
"""state_id is the ID of a state (possibly from the playfield)
that we want to check. ast is either a StateRef or a ClassDecl.
Returns true iff the state_id satisfies the StateRef or ClassDecl.
"""
if ast.type == "ClassDecl":
class_id = ast.value
state_ast = find_state_defn(alpaca, state_id)
return state_defn_is_a(alpaca, state_ast, class_id)
elif ast.type in ("StateRefEq", "StateRefRel"):
pf_state_id = eval_state_ref(playfield, x, y, ast)
return state_id == pf_state_id
def eval_relation(alpaca, playfield, x, y, state_id, ast, verbose=False):
"""state_id is the ID of a state (possibly from the playfield)
that we want to check. ast is either a StateRef or a ClassDecl.
Returns true iff the state_id satisfies the StateRef or ClassDecl.
"""
if ast.type == 'ClassDecl':
class_id = ast.id
state_ast = find_state_defn(alpaca, state_id)
result = state_defn_is_a(alpaca, state_ast, class_id, verbose=verbose)
if verbose:
print " => checking if {} is_a {}: {}".format(state_id, class_id, result)
return result
elif ast.type in ('StateRefEq', 'StateRefRel'):
pf_state_id = eval_state_ref(playfield, x, y, ast)
return state_id == pf_state_id
def eval_relation(alpaca, playfield, x, y, state_id, ast, verbose=False):
"""state_id is the ID of a state (possibly from the playfield)
that we want to check. ast is either a StateRef or a ClassDecl.
Returns true iff the state_id satisfies the StateRef or ClassDecl.
"""
if ast.type == 'ClassDecl':
class_id = ast.id
state_ast = find_state_defn(alpaca, state_id)
result = state_defn_is_a(alpaca, state_ast, class_id, verbose=verbose)
if verbose:
print " => checking if {} is_a {}: {}".format(
state_id, class_id, result)
return result
elif ast.type in ('StateRefEq', 'StateRefRel'):
pf_state_id = eval_state_ref(playfield, x, y, ast)
return state_id == pf_state_id