def json_load(self, path, additional_vars={}):
import json
self.world.GetGroundBody().userData = {"saveid": 0}
f = open(path, 'r')
worldmodel = json.loads(f.read())
f.close()
# clean world
for joint in self.world.GetJointList():
self.world.DestroyJoint(joint)
for body in self.world.GetBodyList():
if body != self.world.GetGroundBody():
self.world.DestroyBody(body)
# load bodys
for body in worldmodel['bodylist']:
bodyDef = box2d.b2BodyDef()
bodyDef.position = body['position']
bodyDef.userData = body['userData']
bodyDef.angle = body['angle']
newBody = self.world.CreateBody(bodyDef)
#_logger.debug(newBody)
newBody.angularVelocity = body['angularVelocity']
newBody.linearVelocity = body['linearVelocity']
if 'shapes' in body:
for shape in body['shapes']:
if shape['type'] == 'polygon':
polyDef = box2d.b2PolygonDef()
polyDef.setVertices(shape['vertices'])
polyDef.density = shape['density']
polyDef.restitution = shape['restitution']
polyDef.friction = shape['friction']
newBody.CreateShape(polyDef)
if shape['type'] == 'circle':
circleDef = box2d.b2CircleDef()
circleDef.radius = shape['radius']
circleDef.density = shape['density']
circleDef.restitution = shape['restitution']
circleDef.friction = shape['friction']
circleDef.localPosition = shape['localPosition']
newBody.CreateShape(circleDef)
newBody.SetMassFromShapes()
for joint in worldmodel['jointlist']:
if joint['type'] == 'distance':
jointDef = box2d.b2DistanceJointDef()
body1 = self.getBodyWithSaveId(joint['body1'])
anch1 = joint['anchor1']
body2 = self.getBodyWithSaveId(joint['body2'])
anch2 = joint['anchor2']
jointDef.collideConnected = joint['collideConnected']
jointDef.Initialize(body1, body2, anch1, anch2)
jointDef.SetUserData(joint['userData'])
self.world.CreateJoint(jointDef)
if joint['type'] == 'revolute':
jointDef = box2d.b2RevoluteJointDef()
body1 = self.getBodyWithSaveId(joint['body1'])
body2 = self.getBodyWithSaveId(joint['body2'])
anchor = joint['anchor']
jointDef.Initialize(body1, body2, anchor)
jointDef.SetUserData(joint['userData'])
jointDef.enableMotor = joint['enableMotor']
jointDef.motorSpeed = joint['motorSpeed']
jointDef.maxMotorTorque = joint['maxMotorTorque']
self.world.CreateJoint(jointDef)
for (k, v) in worldmodel['additional_vars'].items():
additional_vars[k] = v
for body in self.world.GetBodyList():
del body.userData['saveid'] # remove temporary data
def __init__(self, game, location, bottomGraphicFile, topGraphicFile):
self.jumpTimer = RollCat.initialJumpTimer
self.game = game
self.world = game.world
self.cachedOnGround = False
self.jumpState = RollCat.NO_GROUND_TOUCH
bodyDef = box2d.b2BodyDef()
bodyDef.position.Set(location[0], location[1]+1)
#bodyDef.fixedRotation = True
body = self.world.CreateBody(bodyDef)
shapeDef = box2d.b2PolygonDef()
shapeDef.SetAsBox(1, 1)
shapeDef.density = 1
shapeDef.restitution = 0.3
shapeDef.friction = 1.0
shape = body.CreateShape(shapeDef)
shape.SetUserData(-1)
body.SetMassFromShapes()
self.torso = body
self.torso.SetUserData(ROLLCAT_BODY)
bodyDef3 = box2d.b2BodyDef()
bodyDef3.position.Set(location[0],location[1])
body3 = self.world.CreateBody(bodyDef3)
shapeDef3 = box2d.b2CircleDef()
shapeDef3.radius = 0.95
shapeDef3.density = 1
shapeDef3.restitution = 0.1
shapeDef3.friction = 3.0
shape3 = body3.CreateShape(shapeDef3)
shape3.SetUserData(-1) #don't need
body3.SetMassFromShapes()
self.wheel = body3
self.wheel.SetUserData(ROLLCAT_WHEEL)
sensorDef = box2d.b2CircleDef()
sensorDef.radius = 0.9
sensorDef.isSensor = True
sensorDef.localPosition = box2d.b2Vec2(0,-1.1)
sensorShape = self.torso.CreateShape(sensorDef)
sensorShape.SetUserData(ROLLCAT_JUMP_SENSOR)
sensorDef2 = box2d.b2PolygonDef()
sensorDef2.SetAsBox(1.1,1.6,box2d.b2Vec2(0,.5),0)
sensorDef2.isSensor = True
sensorShape2 = self.torso.CreateShape(sensorDef2)
sensorShape2.SetUserData(ROLLCAT_WIN_SENSOR)
jd = box2d.b2RevoluteJointDef()
jd.Initialize(body, body3, box2d.b2Vec2(location[0],location[1]))
revJoint = self.world.CreateJoint(jd).getAsType()
self.axle = revJoint
revJoint.EnableMotor(True)
revJoint.SetMotorSpeed(0)
revJoint.SetMaxMotorTorque(4000)
self.motorSpeed = 0
self.targetAngle = 0
BodySprite(body3,bottomGraphicFile,2, 2, 0, 0, self.game.worldToScreen, self.game.screenToWorld)
BodySprite(body,topGraphicFile,2, 2, 0, 0,self.game.worldToScreen, self.game.screenToWorld)
def json_load(self, path, additional_vars={}):
import json
self.world.GetGroundBody().userData = {"saveid": 0}
f = open(path, 'r')
worldmodel = json.loads(f.read())
f.close()
# clean world
for joint in self.world.GetJointList():
self.world.DestroyJoint(joint)
for body in self.world.GetBodyList():
if body != self.world.GetGroundBody():
self.world.DestroyBody(body)
# load bodys
for body in worldmodel['bodylist']:
bodyDef = box2d.b2BodyDef()
bodyDef.position = body['position']
bodyDef.userData = body['userData']
bodyDef.angle = body['angle']
newBody = self.world.CreateBody(bodyDef)
#_logger.debug(newBody)
newBody.angularVelocity = body['angularVelocity']
newBody.linearVelocity = body['linearVelocity']
if 'shapes' in body:
for shape in body['shapes']:
if shape['type'] == 'polygon':
polyDef = box2d.b2PolygonDef()
polyDef.setVertices(shape['vertices'])
polyDef.density = shape['density']
polyDef.restitution = shape['restitution']
polyDef.friction = shape['friction']
newBody.CreateShape(polyDef)
if shape['type'] == 'circle':
circleDef = box2d.b2CircleDef()
circleDef.radius = shape['radius']
circleDef.density = shape['density']
circleDef.restitution = shape['restitution']
circleDef.friction = shape['friction']
circleDef.localPosition = shape['localPosition']
newBody.CreateShape(circleDef)
newBody.SetMassFromShapes()
for joint in worldmodel['jointlist']:
if joint['type'] == 'distance':
jointDef = box2d.b2DistanceJointDef()
body1 = self.getBodyWithSaveId(joint['body1'])
anch1 = joint['anchor1']
body2 = self.getBodyWithSaveId(joint['body2'])
anch2 = joint['anchor2']
jointDef.collideConnected = joint['collideConnected']
jointDef.Initialize(body1, body2, anch1, anch2)
jointDef.SetUserData(joint['userData'])
self.world.CreateJoint(jointDef)
if joint['type'] == 'revolute':
jointDef = box2d.b2RevoluteJointDef()
body1 = self.getBodyWithSaveId(joint['body1'])
body2 = self.getBodyWithSaveId(joint['body2'])
anchor = joint['anchor']
jointDef.Initialize(body1, body2, anchor)
jointDef.SetUserData(joint['userData'])
jointDef.enableMotor = joint['enableMotor']
jointDef.motorSpeed = joint['motorSpeed']
jointDef.maxMotorTorque = joint['maxMotorTorque']
self.world.CreateJoint(jointDef)
for (k, v) in worldmodel['additional_vars'].items():
additional_vars[k] = v
for body in self.world.GetBodyList():
del body.userData['saveid'] # remove temporary data
