class Backend:
def __init__(self):
self.rules = Rules()
self.curr_state = State(idle=True)
self.pending_subactions = {}
self.last_player_move = ('','')
self.frac = 0
self.next_act_lambda = None
self.message = None
def load(self,filename):
# TODO: need copy?
self.curr_room = room_data.load_room(filename).copy()
self.rules.update(self.curr_room.get_rules())
self.player = self.curr_room.player
def do(self,verb,*arg_objs):
# print (verb,)+tuple(obj.name for obj in arg_objs)
if verb=='move':
assert len(arg_objs)==2
obj = arg_objs[0]
target = arg_objs[1]
if target.can_support:
self.move_obj(target.x,target.y,obj)
else:
self.display_msg("I can't put it there")
if verb=='push':
assert len(arg_objs)==1
offset = arg_objs[0].map_pos() - self.player.map_pos()
dir = dir_from_offset( offset )
if isinstance(dir,Error):
self.display_msg("I need to be next to it to push it")
else:
dir = dir.unwrap()
assert arg_objs[0].pushable
objs = self._pushable_objects(dir)
if objs:
for obj in reversed(objs):
new_pos = obj.map_pos()+offset
self.move_obj(new_pos.x,new_pos.y,obj)
self.curr_state = State(
contexts = {self.player.map_rect():dir},
offsets = {obj.map_rect():dir for obj in objs+[self.player,]},
cleanup_funcs = [lambda:self._finish_move(dir)],
chainable=True)
self.next_act_lambda = lambda: self._begin_facing(dir) # What does this do?
else:
self.display_msg("I can't push it")
elif verb=='examine':
assert len(arg_objs)==1
msg = arg_objs[0].get_examine_text()
self.display_msg( msg if msg else "I don't see anything special")
else:
rule = self.rules.get_rule(verb,*arg_objs)
if not rule:
self.do_default_rule_failure()
else:
# print(self.curr_room.map)
self._do_rule(rule,arg_objs)
# print(self.curr_room.map)
def _pushable_objects(self,dir):
pos = self.player.map_pos()
objs = []
while True:
pos += offset_from_dir(dir)
obj = self.get_obj_at(pos)
if obj.walkable:
return objs
elif obj.pushable:
objs += [obj]
else:
return []
def do_undo(self,undo_event):
print "UNDO"
def do_redo(self,redo_event):
print "REDO"
def _do_rule(self,rule,arg_objs):
new_obj_packs = rule.out_obj_packs
event = Event()
event.verb = rule.verb
event.old_objs = []
event.new_objs = []
event.other_prereqs = []
event.sentence = arg_objs[0].get_verb_sentence_ncase(rule.verb,*arg_objs[1:])
for i,new_pack in enumerate(new_obj_packs):
assert i < len(arg_objs) # TODO: Create completely new objects, eg. wood shavings
old_obj = arg_objs[i]
if new_pack == '_pass':
old_obj.used_in_events_past.append(event)
event.other_prereqs.append(old_obj.copy())
elif new_pack == '_del':
old_obj.used_in_events_past.append(event)
self.remove_obj(old_obj)
event.old_objs.append(old_obj.copy())
else:
new_obj = self.curr_room.defs[new_pack.key].copy()
new_obj.set_state(new_pack.state)
new_obj.created_by_event = [event]
old_obj.used_in_events_past.append(event)
event.old_objs.append(old_obj.copy())
event.new_objs.append(new_obj.copy())
self.convert_obj(old_obj,new_obj)
# TODO: create extra new objs, eg. shavings
# TODO: also work if object is carried
# TODO: create any entirely new objs
for action in rule.out_actions:
# TODO: replace old rules with implementation of actions
if isinstance(action, Endgame):
self.end_game(action.text)
self.store_new_event(event)
if rule.get_msg():
self.display_msg( rule.get_msg() )
def clear_message(self):
self.message = None
def display_msg(self,msg):
self.message = msg
self.curr_state = MessageState(self)
def store_new_event(self,event):
# currently only stored in links from objects, but may want a list of "initial events" which don't depend on any
pass
def do_default_rule_failure(self):
self.display_msg("I don't know how to do that")
def move_obj(self,x,y,obj):
self.curr_room.map.move_to(x,y,obj)
def delete_obj(self,obj):
self.curr_room.map.remove_obj(obj)
def convert_obj(self,old_obj,new_obj):
self.curr_room.map.convert_obj(old_obj,new_obj)
def end_game(self, msg):
self.message = msg
self.curr_state = EndState(self)
def get_obj_at(self,pos):
return self.curr_room.map.get_mapsquare_at(pos).get_combined_mainobj()
def advance_state(self):
if self.curr_state.endgame:
return
for cleanup_func in self.curr_state.cleanup_funcs:
cleanup_func()
self.curr_state = State(idle=True)
if self.next_act_lambda:
self.next_act_lambda()
self.next_act_lambda = None
else:
self._idle_fidget()
def state_is_idle(self):
return self.curr_state.idle
def state_is_chainable(self):
return self.curr_state.chainable
def start_move(self,dir):
assert dir in 'lrud'
if self.state_is_chainable():
self.next_act_lambda = lambda: self.start_move(dir)
else:
if self.get_obj_at(self.player.map_pos() + offset_from_dir(dir)).walkable:
self.curr_state = State(
contexts = {self.player.map_rect():dir},
offsets = {self.player.map_rect():dir},
cleanup_funcs = [lambda:self._finish_move(dir)],
chainable=True)
self.next_act_lambda = lambda: self._begin_facing(dir) # What does this do?
else:
self._begin_facing(dir)
def finished_state(self,frac):
return self.curr_state.is_done(frac)
def _idle_fidget(self):
# Only do at random intervals
random.seed()
fidget = random.choice(('x','x','x','x','x','x1','x2'))
self.curr_state = State( contexts={self.player.map_rect():fidget},idle=True)
def _finish_move(self,dir):
self.player.x, self.player.y = self.player.map_pos() + offset_from_dir(dir)
# TODO: Use map.move_char()
def _begin_facing(self,dir):
self.curr_state = State(
contexts={self.player.map_rect():"f"+dir},
idle=True,
is_done = lambda frac:frac>=3 )
def get_blit_surfaces(self, frac, tile_size, window=Rect(0,0,15,7)):
blit_surfaces = []
for stratum in self.curr_room.map.get_strata_by_rows():
for row in stratum:
for obj_tuple in row:
for obj in obj_tuple:
contexts = self.curr_state.contexts.iteritems()
offsets = self.curr_state.offsets.iteritems()
curr_contexts =tuple( context for rect,context in contexts if obj.is_in(rect) )
curr_offsets =tuple( offset for rect,offset in offsets if obj.is_in(rect) )
blit_surface = obj.get_surface( tile_size,curr_contexts,curr_offsets,frac )
blit_surface.add_external_offset( obj.map_pos()*tile_size )
blit_surfaces.append(blit_surface)
return blit_surfaces
def get_map_size(self):
return self.curr_room.map.map_size()
class Backend:
def __init__(self):
self.rules = Rules()
self.default_idle_state = ({}, [], dict(idle=True), lambda frac: self._idle_done(frac))
self.curr_state = self.default_idle_state
self.pending_subactions = {}
self.last_player_move = ("", "")
self.frac = 0
self.next_act_lambda = None
def load(self, filename):
# TODO: need copy?
self.curr_room = room_data.load_room(filename)
self.rules.update(self.curr_room.get_rules())
self.player = self.curr_room.player
def do(self, verb, *arg_objs):
print (verb,) + tuple(obj.name for obj in arg_objs)
if verb == "move":
assert len(arg_objs) == 2
obj = arg_objs[0]
target = arg_objs[1]
if target.can_support:
self.move_obj(target.x, target.y, obj)
else:
self.print_msg("I can't put it there")
elif verb == "examine":
assert len(arg_objs) == 1
msg = arg_objs[0].get_examine_text()
self.print_msg(msg if msg else "I don't see anything special")
else:
rule = self.rules.get_rule(verb, *arg_objs)
if not rule:
self.do_default_rule_failure()
else:
self._do_rule(rule, arg_objs)
def do_undo(self, undo_event):
print "UNDO"
def do_redo(self, redo_event):
print "REDO"
def _do_rule(self, rule, arg_objs):
new_obj_packs = rule.out_obj_packs
event = Event()
event.verb = rule.verb
event.old_objs = []
event.new_objs = []
event.other_prereqs = []
event.sentence = arg_objs[0].get_verb_sentence_ncase(rule.verb, *arg_objs[1:])
for i, new_pack in enumerate(new_obj_packs):
assert i < len(arg_objs) # TODO: Create completely new objects, eg. wood shavings
old_obj = arg_objs[i]
if new_pack == "_pass":
old_obj.used_in_events_past.append(event)
event.other_prereqs.append(old_obj.copy())
elif new_pack == "_del":
old_obj.used_in_events_past.append(event)
self.remove_obj(old_obj)
event.old_objs.append(old_obj.copy())
else:
new_obj = self.curr_room.defs[new_pack.key].copy()
new_obj.set_state(new_pack.state)
new_obj.created_by_event = [event]
old_obj.used_in_events_past.append(event)
event.old_objs.append(old_obj.copy())
event.new_objs.append(new_obj.copy())
self.convert_obj(old_obj, new_obj)
# TODO: create extra new objs, eg. shavings
# TODO: also work if object is carried
# TODO: create any entirely new objs
self.store_new_event(event)
if rule.get_msg():
self.print_msg(rule.get_msg())
def print_msg(self, msg):
print ">>> " + msg
def store_new_event(self, event):
# currently only stored in links from objects, but may want a list of "initial events" which don't depend on any
pass
def do_default_rule_failure(self):
self.print_msg("I don't know how to do that")
def move_obj(self, x, y, obj):
self.curr_room.map.move_to(x, y, obj)
def delete_obj(self, obj):
self.curr_room.map.remove_obj(obj)
def convert_obj(self, old_obj, new_obj):
self.curr_room.map.convert_obj(old_obj, new_obj)
def get_obj_at(self, pos):
return self.curr_room.map.get_mapsquare_at(pos).get_combined_mainobj()
def advance_state(self):
for func in self.curr_state[1]:
func()
self.curr_state = self.default_idle_state
if self.next_act_lambda:
self.next_act_lambda()
self.next_act_lambda = None
else:
self._idle_fidget()
def state_is_idle(self):
return self.curr_state[2].get("idle")
def state_is_chainable(self):
return self.curr_state[2].get("chainable")
def start_move(self, dir):
assert dir in "lrud"
if self.state_is_chainable():
self.next_act_lambda = lambda: self.start_move(dir)
else:
if self.get_obj_at(self.player.map_pos() + offset_from_dir(dir)).walkable:
self.curr_state = (
{self.player.map_rect(): dir},
[lambda: self._finish_move(dir)],
dict(chainable=True),
)
self.next_act_lambda = lambda: self._begin_facing(dir)
else:
self._begin_facing(dir)
def finished_state(self, frac):
if len(self.curr_state) >= 4:
return self.curr_state[3](frac)
else:
return frac >= 1
def _idle_done(self, frac):
return frac >= 1
def _idle_fidget(self):
# Only do at random intervals
random.seed()
fidget = random.choice(("x", "x", "x", "x", "x", "x1", "x2"))
self.curr_state = ({self.player.map_rect(): fidget}, [], dict(idle=True))
def _finish_move(self, dir):
self.player.x, self.player.y = self.player.map_pos() + offset_from_dir(dir)
# TODO: Use map.move_char()
def _begin_facing(self, dir):
self.curr_state = ({self.player.map_rect(): "f" + dir}, [], dict(idle=True), lambda frac: frac >= 3)
def get_blit_surfaces(self, frac, tile_size, window=Rect(0, 0, 15, 7)):
blit_surfaces = []
for stratum in self.curr_room.map.get_strata_by_rows():
for row in stratum:
for obj_tuple in row:
for obj in obj_tuple:
blit_surface = obj.get_surface(tile_size, self.curr_state[0], frac)
blit_surface.add_external_offset(obj.map_pos() * tile_size)
blit_surfaces.append(blit_surface)
return blit_surfaces
def get_map_size(self):
return self.curr_room.map.map_size()