def time_till(self):
"""
离下一次计算的时间
>0时说明还差n秒进行下一次计算
<0时visit会执行一次计算
:return:
"""
return self.last_time or 0. + self.period - now()
def visit(self):
current_time = now()
if self.status != RUNNING:
self.wake_time = current_time + self.wait_time
self.status = RUNNING
else:
if current_time >= self.wake_time:
self.status = SUCCESS
def fire(self):
shot = None
for ammo in self.ammo:
if ammo.type == ShotType.UNUSED:
shot = ammo
break
if not shot:
return
fn = getattr(self, self.currentShotType.lower())
fn and fn(shot)
shot.particle.setPosition(0.0, 1.5, 0.0)
shot.startTime = now()
shot.type = self.currentShotType
def visit(self):
"""
:return:
"""
# 如果没计算过，或者周期到了
do_eval = not self.last_time or not self.period or self.time_till < 0.
if do_eval:
# ---------------------------------------------------
# 遍历子节点
# 找到第一个成功的节点
# ---------------------------------------------------
old_event = None
if self.index is not None:
child = self.children[self.index]
old_event = child if isinstance(child, EventNode) else None
self.last_time = now()
found = False
for index, child in enumerate(self.children):
should_test_anyway = old_event and isinstance(child, EventNode) and old_event.priority <= child.priority
if not found or should_test_anyway:
if child.status == FAILED or child.status == SUCCESS:
child.reset()
child.visit()
cs = child.status
if cs == SUCCESS or cs == RUNNING:
if should_test_anyway and self.index != index:
self.children[self.index].reset()
self.status = cs
found = True
self.index = index
else:
child.reset()
if not found:
self.status = FAILED
else:
# ---------------------------------------------------
# 运行当前节点
# ---------------------------------------------------
if self.index is not None:
child = self.children[self.index]
if child.status == RUNNING:
child.visit()
self.status = child.status
if self.status != RUNNING:
self.last_time = None
def go_to_state(self, state_name, *params):
"""
/
:param state_name:
:param params: Table
:return:
"""
assert state_name in self.sg.states, "TRIED TO GO TO INVALID STATE %s" % state_name
from_state = self.current_state
from_state and from_state.on_exit and from_state.on_exit(
self.inst, state_name)
to_state = self.sg.states[state_name]
self.tags = set(
to_state.tags) if to_state.tags else set() # 拷贝新状态的tags
self.last_state, self.current_state = self.current_state, to_state
to_state.on_enter and to_state.on_enter(self.inst, params)
self.inst.push_event('new_state', Table(state_name=state_name))
self.state_start_time = now()
self.timeline_index = 0 if to_state.timeline else None
SGManager.on_enter_new_state(self)
def __str__(self):
return '{:2.2f}'.format(self.wake_time - now())
def lifetime(self):
return now() - self.startTime
def time_in_state(self):
"""
当前状态开始到现在的时间差
:return:
"""
return now() - self.state_start_time