Question

我想点击加载的模型并移动它们。我使用了国际象棋示例和熊猫3d教程的代码，没有任何成功。有人可以弄清楚代码是什么问题。

谢谢

 from math import pi, sin, cos
    import sys
    from direct.showbase.ShowBase import ShowBase
    import direct.directbase.DirectStart
    from direct.task import Task
    from panda3d.core import TextNode
    from direct.gui.OnscreenText import OnscreenText
    from panda3d.core import CollisionTraverser, CollisionNode
    from panda3d.core import CollisionHandlerQueue,CollisionRay
    from panda3d.core import Point3,Vec3,Vec4,BitMask32
    from direct.showbase.DirectObject import DirectObject
    from panda3d.core import AmbientLight,DirectionalLight,LightAttrib


    class MyApp(ShowBase):
        def __init__(self):
            ShowBase.__init__(self)


            # quit when esc is pressed
            self.accept('escape',sys.exit)

            #base.disableMouse()


            # load the box model
            self.box = self.loader.loadModel("models/xbox")
            self.box.reparentTo(camera)
            self.box.setScale(2.0, 2.0, 2.0)
            self.box.setPos(8, 50, 0)


            self.keyMap ={"w" :False ,"s" :False,"a":False,"d":False, "mouse1" :False, "mouse3" :False}


            # CollisionTraverser  and a Collision Handler is set up
            self.picker = CollisionTraverser()
            self.pq = CollisionHandlerQueue() 


            self.pickerNode = CollisionNode('mouseRay')
            self.pickerNP = camera.attachNewNode(self.pickerNode)
            self.pickerNode.setFromCollideMask(BitMask32.bit(1))
            self.box.setCollideMask(BitMask32.bit(1)) 

            self.pickerRay = CollisionRay()
            self.pickerNode.addSolid(self.pickerRay)
            self.picker.addCollider(self.pickerNP,self.pq)



            self.mouseTask = taskMgr.add(self.mouseTask, 'mouseTask')
            self.accept("mouse1",self.setKey,["mouse1",True])


        def mouseTask(self,task):
            # check if we have access to the mouse
            if base.mouseWatcherNode.hasMouse():

                # get the mouse position
                mpos = base.mouseWatcherNode.getMouse()

                # set the position of the ray based on the mouse position
                self.pickerRay.setFromLens(base.camNode,mpos.getX(),mpos.getY())
                self.picker.traverse(render)
                # if we have hit something sort the hits so that the closest is first and highlight the node
                if self.pq.getNumEntries() > 0:
                    self.pq.sortEntries()
                    pickedObj = self.picker.getEntry(0).getIntoNodePath()



        def setKey(self,key,value):
            self.keyMap[key] = value


    app = MyApp()
    app.run()

Answer 1

当我找到你的问题时，我只是想做同样的事情。感谢您的代码，它帮助我开始！

我已经设法让它发挥作用：）

只是一句话：你使用一个没有返回的任务，这使任务运行一次。你应该使用：return task.cont

无论如何，这里是panda3d devel（1.8.0 +）的工作代码：

import sys
from direct.showbase.ShowBase import ShowBase
from pandac.PandaModules import *


class MyApp(ShowBase):
    def __init__(self):
        ShowBase.__init__(self)


        # quit when esc is pressed
        self.accept('escape',sys.exit)

        #base.disableMouse()


        # load the box model
        box = self.loader.loadModel("models/box")
        box.reparentTo(render)
        box.setScale(2.0, 2.0, 2.0)
        box.setPos(8, 50, 0)

        panda = base.loader.loadModel("models/panda")
        panda.reparentTo(render)
        panda.setPos(0, 10, 0)
        panda.setScale(0.1, 0.1, 0.1)
        cNodePanda = panda.attachNewNode(CollisionNode('cnode_panda'))
        cNodePanda.node().addSolid(CollisionSphere(0,0,5,5))
        cNodePanda.show()

        # CollisionTraverser  and a Collision Handler is set up
        self.picker = CollisionTraverser()
        self.picker.showCollisions(render)
        self.pq = CollisionHandlerQueue() 

        self.pickerNode = CollisionNode('mouseRay')
        self.pickerNP = camera.attachNewNode(self.pickerNode)
        self.pickerNode.setFromCollideMask(BitMask32.bit(1))
        box.setCollideMask(BitMask32.bit(1)) 
        panda.setCollideMask(BitMask32.bit(1))

        self.pickerRay = CollisionRay()
        self.pickerNode.addSolid(self.pickerRay)
        self.picker.addCollider(self.pickerNP,self.pq)

        self.accept("mouse1",self.mouseClick)


    def mouseClick(self):
        print('mouse click')
        # check if we have access to the mouse
        if base.mouseWatcherNode.hasMouse():

            # get the mouse position
            mpos = base.mouseWatcherNode.getMouse()

            # set the position of the ray based on the mouse position
            self.pickerRay.setFromLens(base.camNode,mpos.getX(),mpos.getY())
            self.picker.traverse(render)
            # if we have hit something sort the hits so that the closest is first and highlight the node
            if self.pq.getNumEntries() > 0:
                self.pq.sortEntries()
                pickedObj = self.pq.getEntry(0).getIntoNodePath()
                print('click on ' + pickedObj.getName())

app = MyApp()
app.run()

无法单击3d对象并移动它们

1 个答案: