WorldViz User Forum  

Go Back   WorldViz User Forum > Vizard

Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old 06-07-2010, 11:03 AM
Enlil Enlil is offline
Member
 
Join Date: May 2008
Posts: 61
UserAvatar questions

Hello, I am using the ideas from
http://vizworkshop.com/articles/walkthrough_app
with the intent of making a moving collide capsule to move the camera with.

The code looks like this:
Code:
import viz

class UserSkeleton(viz.EventClass):
    def __init__(self, eye_height, HeadObjectName, move_speed, turn_speed):
        viz.EventClass.__init__(self)
        self.TurnSpeed = turn_speed
        self.MoveSpeed = move_speed
        print "Move speed: " + str(move_speed)
        self.CollideCapsule = viz.addGroup()
        self.CollideCapsule.setPosition(0,1,0)
        self.Feet = viz.addGroup(self.CollideCapsule)
        self.ChestAndCalibration = viz.addGroup(self.Feet)
        self.ChestAndCalibration.setPosition([0,0,0])
        self.HeadNode = viz.addGroup(self.ChestAndCalibration)
        self.HeadNode.setPosition([0, eye_height-1.2, 0])
        self.EyeNode = viz.addGroup(self.HeadNode)
        self.EyeNode.setPosition([0,.08,.1])
        
        self.ball = viz.add('ball.wrl')
        self.ball.setScale([.1,.1,.1])
        print "HeadNode position: " + str(self.HeadNode.getPosition(viz.ABS_GLOBAL))
        self.HeadObject = viz.add('biohead_talk.vzf')
        self.HeadObject.alpha(.5)
        #self.physicShape = self.CollideCapsule.collideCapsule(euler=[0,90,0], radius=.36, length=1, friction=.00000001, hardness=.0000001, bounce=0)
        self.physicShape = self.CollideCapsule.collideCapsule(euler=[0,90,0], radius=.36, length=1, friction=.1, hardness=.0000001, bounce=0)
        #self.physicShape = self.CollideCapsule.collideBox([.25, 1, .25])
        self.velMotor = self.CollideCapsule.addVelocity(velocity=[0,0,0], maxForce=100, gravity=False)

        self.mouseDx = 0
        self.mouseDy = 0
        self.callback(viz.MOUSE_MOVE_EVENT, self.onMouseMove)
        
        vizact.onupdate(viz.PRIORITY_PHYSICS-1, self.updatePrePhysics)
        vizact.onupdate(viz.PRIORITY_PHYSICS+1, self.updatePostPhysics)
    def updatePrePhysics(self):
        throttle = vizmat.Vector([0,0,0])
        ## rotation Control for feet
        yawChange = self.mouseDx * self.TurnSpeed
        # move distance
        throttleChange = self.mouseDy * self.MoveSpeed
        #print "move speed: " + str(throttleChange) + " Move speed: " + str(self.MoveSpeed) + " Dy: " + str(self.mouseDy)
        #discard old mouse movement and start collecting new mouse input
        self.mouseDx = 0
        self.mouseDy = 0
        
        feetEuler = self.Feet.getEuler(viz.ABS_GLOBAL)
        feetEuler[0] = feetEuler[0] + yawChange
        feetEuler[1] = 0 #no pitch
        feetEuler[2] = 0 #no roll
        self.Feet.setEuler(feetEuler, viz.ABS_GLOBAL)
            
        ## Translate Control
        throttle.set([0,0,throttleChange])
        
        #throttle.normalize() #<--direction
            
        if throttle.length(): #if throttle not zero
            #move forward in direction of head
            newVel = vizmat.Transform()
            newVel.setTrans(throttle)            
            newVel.postEuler(self.Feet.getEuler(viz.ABS_GLOBAL))
            self.velMotor.setVelocity(newVel.getTrans())
        else:
            self.velMotor.setVelocity([0, 0, 0])


    def updatePostPhysics(self):
        self.CollideCapsule.setEuler([0, 0, 0])
        self.HeadObject.setPosition(self.HeadNode.getPosition(viz.ABS_GLOBAL), viz.ABS_GLOBAL)
        self.HeadObject.setEuler(self.HeadNode.getEuler(viz.ABS_GLOBAL), viz.ABS_GLOBAL)
        viz.MainView.setPosition(self.EyeNode.getPosition(viz.ABS_GLOBAL), viz.ABS_GLOBAL)
        viz.MainView.setEuler(self.EyeNode.getEuler(viz.ABS_GLOBAL))
        #self.ball.setPosition(self.EyeNode.getPosition(viz.ABS_GLOBAL), viz.ABS_GLOBAL)
        #self.ball.setEuler(self.EyeNode.getEuler(viz.ABS_GLOBAL), viz.ABS_GLOBAL)
        #print "Head position: " + str(self.HeadObject.getPosition(viz.ABS_GLOBAL))
        #print "Capsule position: " + str(self.CollideCapsule.getPosition(viz.ABS_GLOBAL))
        #print "Feet position: " + str(self.Feet.getPosition(viz.ABS_GLOBAL))
        #print "HeadNode euler: " + str(self.HeadNode.getEuler(viz.ABS_GLOBAL))
        #print "EyeNode euler: " + str(self.EyeNode.getEuler(viz.ABS_GLOBAL))
        #print "MainView euler: " + str(viz.MainView.getEuler())
        #viz.MainView.lookat(self.HeadNode.getPosition(viz.ABS_GLOBAL))
        
    def onMouseMove(self, e):
        #fuction called twice, once for movement on x axis, once for y axis
        self.mouseDx = self.mouseDx + e.dx
        self.mouseDy = self.mouseDy + e.dy
    

    def setPosition(self, xyz):
        self.feet.setPosition(xyz)
        
    def setEuler(self, euler):
        self.head.setEuler(euler)

if __name__ == '__main__':
    viz.go()
    #viz.move([0, 0, -2])
    viz.phys.enable()
    viz.stepsize(1)
    #viz.phys.setGravity([0,1,0])
    #t = viz.add('tankmaze.wrl')
    t = viz.add( 'playground.wrl' )
    t.setPosition([-10,0,10]) 
    #t = viz.add('C:/AXE/Resource/Rooms/apartment-small3.IVE')
    #t.setScale([.01, .01, .01])
    t.collideMesh(bounce=0, hardness=1, friction=0)
    user = UserSkeleton(1.82, 'biohead_talk.vzf', .4, .1)
    def mykeyboard(key):
        if key == ' ':
            print "Adding thruster: " 
            user.CollideCapsule.addThruster(mode=viz.ABSOLUTE_LOCAL,force=[0,-20,0])
        if key == '1':
            print "Position: " + str(user.HeadNode.getPosition(viz.ABS_GLOBAL))
            print "Adding thruster: " 



    
    viz.callback(viz.KEYBOARD_EVENT,mykeyboard)
Moving the mouse forward moves the view forward, moving from side to side rotates the camera.

It does almost exactly what I want, save for one thing - there are couches in the environment, and the capsule seems to tend to 'climb' up them. Is there any good solution to this using the above method? Or is there some nicer, cleaner method?

Thanks,
Christian
Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Two questions (networking) TrashcanPatrol Vizard 5 05-07-2009 01:46 PM
3 Easy Questions JMOwens Vizard 3 10-03-2007 12:10 PM
General Questions about Vizard: World Viz dav Vizard 5 08-28-2006 03:44 PM
Antialiasing questions oodini Vizard 1 12-06-2005 12:08 PM
Vizard 2.51 beta testing questions Gladsomebeast Vizard 2 03-03-2005 05:09 PM


All times are GMT -7. The time now is 10:58 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright 2002-2018 WorldViz LLC