class Forward_Motion(SpriteComponent):
"""Apply velocity or acceleration in the direction the object is facing.
Warning: This component uses a tick_action, so it may be slow."""
#component_info
_set = 'pig'
_type = 'behavior'
_class_list = [Node]
# attributes: ['name','desc'] or ['name', agui, {'doc':'desc', extra info}]
_field_list = [
['speed','Forward velocity or acceleration'],
['accelerate',"If True, 'speed' indicates acceleration.\n"+\
"If False, 'speed' indicates velocity"],
]
#defaults
speed = 200
accelerate = True
offset = 0 # decided to hide this from the component gui, but it still works
actual_offset = 0
tick_action = None
last_rotation = None
last_speed = None
@component_method
def on_added_to_scene(self):
"""Start facing target when object is added to scene"""
self.set_forward_motion()
@component_method
def set_forward_motion(self, speed=None):
"""set_forward_motion(self, speed=None)
speed: set object's forward velocity or acceleration to this value. Defaults to
self.speed
"""
if speed == None:
speed = self.speed
else:
self.speed = speed
if self.speed < 0:
self.actual_offset = self.offset + 180
else:
self.actual_offset = self.offset
self.speed_vector = Vector(0, -speed)
if speed:
if not self.tick_action:
self.tick_action = RealTickFunc(self.update_forward_motion)
self.tick_action.do()
else:
if self.tick_action:
self.tick_action.abort()
self.tick_action = None
self.last_rotation = None
self.last_speed = None
self.set_motion()
@component_method
def on_destroy(self):
"Abort the tick action on destroy"
try:
if self.tick_action:
self.tick_action.abort()
except:
pass
def set_motion(self):
self.speed_vector.direction = self.owner.rotation + self.actual_offset
if self.accelerate:
self.owner.acceleration = self.speed_vector
else:
self.owner.velocity = self.speed_vector
def update_forward_motion(self):
if not self.enabled:
return
if self.owner.rotation == self.last_rotation and\
self.speed == self.last_speed:
return
self.set_motion()
self.last_rotation = self.owner.rotation
self.last_speed = self.speed
class Forward_Motion(SpriteComponent):
"""Apply velocity or acceleration in the direction the object is facing.
Warning: This component uses a tick_action, so it may be slow."""
#component_info
_set = 'pig'
_type = 'behavior'
_class_list = [Node]
# attributes: ['name','desc'] or ['name', agui, {'doc':'desc', extra info}]
_field_list = [
['speed','Forward velocity or acceleration'],
['accelerate',"If True, 'speed' indicates acceleration.\n"+\
"If False, 'speed' indicates velocity"],
]
#defaults
speed = 200
accelerate = True
offset = 0 # decided to hide this from the component gui, but it still works
actual_offset = 0
tick_action = None
last_rotation = None
last_speed = None
@component_method
def on_added_to_scene(self):
"""Start facing target when object is added to scene"""
self.set_forward_motion()
@component_method
def set_forward_motion(self, speed=None):
"""set_forward_motion(self, speed=None)
speed: set object's forward velocity or acceleration to this value. Defaults to
self.speed
"""
if speed == None:
speed = self.speed
else:
self.speed = speed
if self.speed < 0:
self.actual_offset = self.offset + 180
else:
self.actual_offset = self.offset
self.speed_vector = Vector(0, -speed)
if speed:
if not self.tick_action:
self.tick_action = RealTickFunc(self.update_forward_motion)
self.tick_action.do()
else:
if self.tick_action:
self.tick_action.abort()
self.tick_action = None
self.last_rotation = None
self.last_speed = None
self.set_motion()
@component_method
def on_destroy(self):
"Abort the tick action on destroy"
try:
if self.tick_action:
self.tick_action.abort()
except:
pass
def set_motion(self):
self.speed_vector.direction = self.owner.rotation + self.actual_offset
if self.accelerate:
self.owner.acceleration = self.speed_vector
else:
self.owner.velocity = self.speed_vector
def update_forward_motion(self):
if not self.enabled:
return
if self.owner.rotation == self.last_rotation and\
self.speed == self.last_speed:
return
self.set_motion()
self.last_rotation = self.owner.rotation
self.last_speed = self.speed
