WorldViz User Forum - moving object forward backward

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- - moving object forward backward (https://forum.worldviz.com/showthread.php?t=3338)

Zword

01-13-2011 04:51 AM

moving object forward backward

When the mouse is pointed at the object I want to move it depending on wich key i press. A normal int number works but example +=0.5 does not work.

Code:

Code:

cube = vizshape.addCube()



def moveForward():

        object = viz.pick()

        if object.valid():

                pos += 10

                object.setPosition([pos],0,0)

                print 'move backward'



vizact.onkeydown( 'w', moveForward )



def moveBackward ():

        object = viz.pick()

        if object.valid():

                pos += 10

                object.setPosition([pos],0,0)

        print 'move forward'

        

vizact.onkeydown( 's', moveBackward )

masaki

01-13-2011 11:17 AM

hello,

the setPosition command accepts lists in [x,y,z] format so try object.setPosition([pos,0,0]). if you're trying to go forward and backward, that's normally along the z-axis so you might want to change it to ([0,0,pos]).

Masaki

Zword

01-16-2011 04:43 AM

That is not working. This is the error I get:

Traceback (most recent call last):
File "C:\Program Files (x86)\WorldViz\Vizard30/python\vizact.py", line 3019, in __onkeydown
self._callGroup(self.__keydownmap[key])
File "C:\Program Files (x86)\WorldViz\Vizard30/python\vizact.py", line 2971, in _callGroup
val = e.call(arg)
File "C:\Program Files (x86)\WorldViz\Vizard30/python\vizact.py", line 2794, in _callStatic
return func(*args,**kwargs)
File "Test wall.py", line 39, in moveForward
pos += 0.5
UnboundLocalError: local variable 'pos' referenced before assignment

My code:

Code:

def moveForward():

        object = viz.pick()

        pos += 0.5

        if object.valid():

                object.setPosition([pos,0,0])

                viz.callback(viz.COLLIDE_BEGIN_EVENT,oncollide)



vizact.onkeydown( 'w', moveForward

Jeff	01-18-2011 12:08 PM

You need to assign a value to pos before you add to it:

Code:

import viz

import vizshape

import vizact

viz.go()



cube = vizshape.addCube()

cube.setPosition([0,1.5,3])



pos = 3



def moveForward():

    global pos

    object = viz.pick()

    if object.valid():

        pos += 0.5

        object.setPosition([0,1.5,pos])

        print 'move forward'



vizact.onkeydown( 'w', moveForward )



def moveBackward ():

    global pos

    object = viz.pick()

    if object.valid():

        pos -= 0.5

        object.setPosition([0,1.5,pos])

    print 'move backward'

    

vizact.onkeydown( 's', moveBackward )

Zword

01-20-2011 08:21 AM

Tnx it worked. Tnx for your time

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