helloworld.py

from math import pi, sin, cos

from direct.showbase.ShowBase import ShowBase
from direct.task import Task
from direct.actor.Actor import Actor
from direct.interval.IntervalGlobal import Sequence
from panda3d.core import Point3
from pandac.PandaModules import *

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

        # Disable camera trackball controls
        #self.disableMouse()

        # Load environment model
        self.environ = self.loader.loadModel("/Developer/Panda3D/models/environment")
        # Reparent the model to render
        self.environ.reparentTo(self.render)
        # Apply scale and position transforms on the model
        self.environ.setScale(0.25, 0.25, 0.25)
        self.environ.setPos(-8, 24, 0)

        # Add the spinCameraTask
        self.taskMgr.add(self.spinCameraTask, "SpinCameraTask")

        # Load and transform the panda actor
        self.pandaActor = Actor("/Developer/Panda3D/models/panda-model", {"walk4": "/Developer/Panda3D/models/panda-walk4"})
        self.pandaActor.setScale(0.015, 0.015, 0.015)
        self.pandaActor.reparentTo(self.render)

        # Loop animation
        self.pandaActor.loop("walk4")

        # Create intervals
        pandaPosInterval1 = self.pandaActor.posInterval(13,
                                                        Point3(0, -10, 0),
                                                        startPos=Point3(0, 10, 0))
        pandaPosInterval2 = self.pandaActor.posInterval(13,
                                                        Point3(0, 10, 0),
                                                        startPos=Point3(0, -10, 0))
        pandaHprInterval1 = self.pandaActor.hprInterval(3,
                                                        Point3(180, 0, 0),
                                                        startHpr=Point3(0, 0, 0))
        pandaHprInterval2 = self.pandaActor.hprInterval(3,
                                                        Point3(0, 0, 0),
                                                        startHpr=Point3(180, 0, 0))

        # Play sequence that coordinates the intervals
        self.pandaPace = Sequence(pandaPosInterval1,
                                  pandaHprInterval1,
                                  pandaPosInterval2,
                                  pandaHprInterval2,
                                  name="pandaPace")


        # Lighting
        dlight = DirectionalLight('my dlight')
        #dlight.setColor(VBase4(0.8, 0.8, 0.5, 1))
        dlnp = self.render.attachNewNode(dlight)
        dlnp.setHpr(0, -60, 0)

        slight = Spotlight('my slight')
        slight.setColor(VBase4(1, 1, 1, 1))
        lens = PerspectiveLens()
        slight.setLens(lens)
        slnp = self.render.attachNewNode(slight)
        slnp.setPos(100, 200, 0)
        slnp.lookAt(self.pandaActor)

        # turn on shadow
        #slight.setShadowCaster(True, 512, 512)
        dlight.setShadowCaster(True, 512, 512)
        self.render.setShaderAuto()

        # turn on lighting effect for the world
        #render.setLight(slnp)
        self.render.setLight(dlnp)

        self.pandaPace.loop()

    def spinCameraTask(self, task):
        angleDegrees = task.time * 6.0
        angleRadians = angleDegrees * (pi / 180.0)
        self.camera.setPos(50 * sin(angleRadians), -50.0 * cos(angleRadians), 3)
        self.camera.setHpr(angleDegrees, 0, 0)
        return Task.cont

app = MyApp()
app.run()