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import direct.directbase.DirectStart
from pandac.PandaModules import loadPrcFileData
from pandac.PandaModules import *
from pandac.PandaModules import CollisionTraverser,CollisionNode
from pandac.PandaModules import CollisionHandlerQueue,CollisionRay
from pandac.PandaModules import Filename,GeomNode
from pandac.PandaModules import PandaNode,NodePath,Camera,TextNode
from pandac.PandaModules import Vec3,Vec4,BitMask32
from direct.gui.OnscreenText import OnscreenText
from direct.actor.Actor import Actor
from direct.task.Task import Task
from direct.showbase.DirectObject import DirectObject
from pandac.PandaModules import GeoMipTerrain
import random, sys, os, math
 
 
loadPrcFileData("", "interpolate-frames 1")
 
 
# Figure out what directory this program is in.
MYDIR=os.path.abspath(sys.path[0])
MYDIR=Filename.fromOsSpecific(MYDIR).getFullpath()
 
# Function to put instructions on the screen.
def addInstructions(pos, msg):
    return OnscreenText(text=msg, style=1, fg=(1,1,1,1),
            pos=(-1.3, pos), align=TextNode.ALeft, scale = .05,mayChange=True)
 
# Function to put title on the screen.
def addTitle(text):
    return OnscreenText(text=text, style=1, fg=(1,1,1,1),
                    pos=(1.3,-0.95), align=TextNode.ARight, scale = .07)
 
class World(DirectObject):
 
    def __init__(self):
 
#-3,5,0 =)
 
    	self.terrain = GeoMipTerrain("terrain")
        self.terrain.setHeightfield(Filename("models/heightmap2.bmp"))
        self.terrain.getRoot().setSz(15)
        self.terrain.getRoot().reparentTo(render)
        self.terrain.generate()
        self.terrain.getRoot().setPos(0,0,10)
 
        base.win.setClearColor(Vec4(0,0,0,1))
 
        self.picker = CollisionTraverser()
        self.queue = CollisionHandlerQueue()
 
        # Post the instructions
        self.title = addTitle("Panda3D Tutorial: Roaming Ralph (Walking on Uneven Terrain)")
        self.inst1 = addInstructions(0.95, "[ESC]: Quit")
        self.inst2 = addInstructions(0.90, "[Left Arrow]: Rotate Ralph Left")
        self.inst3 = addInstructions(0.85, "[Right Arrow]: Rotate Ralph Right")
        self.inst4 = addInstructions(0.80, "[Up Arrow]: Run Ralph Forward")
        self.inst5 = addInstructions(0.75, "[Down Arrow]: Home")
        self.inst10 = addInstructions(0.60, "!!!")
        self.inst11 = addInstructions(0.50, "...")
        self.inst30 = addInstructions(0.10, " ")
 
        self.loadPicker()
 
        # Create the main character, Ralph
 
        ralphStartPos = (3,5)
 
        self.ralph = Actor("models/ralph",
                                 {"run":"models/ralph-run",
                                  "walk":"models/ralph-walk"})
        self.ralph.reparentTo(render)
        self.ralph.setScale(.5)
 
 
        self.ralph.setTag('pickable', 'R')
 
        # Create a floater object.  We use the "floater" as a temporary
        # variable in a variety of calculations.
        self.floater = NodePath(PandaNode("floater"))
        self.floater.reparentTo(render)
 
        # Accept the control keys for movement and rotation
        self.accept("escape", sys.exit)
        self.accept("shift-mouse1", self.collisionCheck,[1])
        self.accept("shift-mouse3", self.collisionCheck,[2])
        self.accept("shift-mouse2", self.collisionCheck,[3])
 
        taskMgr.add(self.move,"moveTask")
        taskMgr.add(self.ZCord,"moveTask")
 
        # Set up the camera
 
        #~ base.disableMouse()
        base.camera.setPos(0,0,20)
 
        # Game state variables
        self.prevtime = 0
        self.isMoving = False
 
 
        #load s light=========================
 
        plight = PointLight('plight')
        plight.setColor(VBase4(1, 1.3, 1.2, 1))
        plnp = render.attachNewNode(plight)
        plnp.setPos(0, 0, 30)
        render.setLight(plnp)
 
        #~ =============================
 
 
 
    #Records the state of the arrow keys
    def setKey(self, key, value):
        self.keyMap[key] = value
 
    #teleport ralph
    def teleport(self, pos):
        self.ralph.setPos(pos)
 
    #the same
    def move2(self, pos):
        self.ralph.setPos(pos)
 
    def loadPicker(self):
        #attach a CollisionRay node to the camera
        self.pickerNode = CollisionNode('mouseRay')
        self.pickerNP = camera.attachNewNode(self.pickerNode)
        self.pickerNode.setFromCollideMask(GeomNode.getDefaultCollideMask())
        self.pickerRay = CollisionRay()
        self.pickerNode.addSolid(self.pickerRay)
 
        self.pickerNP.show()
 
        #add collision node (fromObject) to the traverser
        self.picker.addCollider(self.pickerNP, self.queue)
        self.picker.showCollisions(render)
 
        if base.mouseWatcherNode.hasMouse():
            #get the mouse position
            mpos = base.mouseWatcherNode.getMouse()
            #aim the collision ray
            self.pickerRay.setFromLens(base.camNode, mpos.getX(), mpos.getY())
 
 
 
            self.inst30.destroy()
            self.inst30 = addInstructions(-0.50, str(mpos.getX())+"   "+str(mpos.getY()))
            #fire the ray and record, in the queue, any collisions
            self.picker.traverse(render)
 
            if self.queue.getNumEntries() > 0:
                if self.queue.getNumEntries() == 1:
                    self.mytext = "A collision with: _  " \
                    + str(self.queue.getEntry(0).getIntoNodePath()) +" at point of:  _ "  \
                    + str(self.queue.getEntry(0).getInteriorPoint(self.queue.getEntry(0).getIntoNodePath()))
                else:
                    #organize the collisions from first hit to second...
                    self.queue.sortEntries()
                    #output the name of the node paths the ray collided with
                    self.mytext = "A collision occured first with " \
                    + str(self.queue.getEntry(0).getIntoNodePath()) \
                    + " and then with " +  str(self.queue.getEntry(1).getIntoNodePath())
 
 
                self.onCollisionText.setText(self.mytext)
 
 
    def collisionCheck(self,but):
        if base.mouseWatcherNode.hasMouse():
            #get the mouse position
            mpos = base.mouseWatcherNode.getMouse()
            #aim the collision ray
            self.pickerRay.setFromLens(base.camNode, mpos.getX(), mpos.getY())
            self.inst30.destroy()
            self.inst30 = addInstructions(-0.50, str(mpos.getX())+"   "+str(mpos.getY()))
            #fire the ray and record, in the queue, any collisions
            self.picker.traverse(render)
 
            if self.queue.getNumEntries() > 0:
                if but ==1:
                    #self.teleport(self.queue.getEntry(0).getInteriorPoint(self.queue.getEntry(0).getIntoNodePath()))
                    self.moveTo = self.queue.getEntry(0).getInteriorPoint(self.queue.getEntry(0).getIntoNodePath())
                    self.ralph.loop("run")
 
                if but ==2:
                    self.move2(self.queue.getEntry(0).getInteriorPoint(self.queue.getEntry(0).getIntoNodePath()))
 
 
    def move(self, task):
 
        #time saving
        elapsed = task.time - self.prevtime
 
        # save ralph's initial position so that we can restore it,
        # in case he falls off the map or runs into something.
 
        startpos = self.ralph.getPos()
 
        #mose moving =) thanks InternZero
        if hasattr(self, "moveTo"):
            self.ralph.lookAt(self.moveTo)
            self.ralph.setH(self.ralph, 180)
            backward = self.ralph.getNetTransform().getMat().getRow3(1)
            #~ backward.setZ(0)
            backward.normalize()
            self.ralph.setPos(self.ralph.getPos() - backward*(elapsed*5))
            #stop when reach the destination point
            if self.ralph.getPos(render).almostEqual(self.moveTo, 0.05):
                #~ print "Comparison:", self.ralph.getPos(render), self.moveTo
                self.ralph.setPos(self.moveTo)
                self.isMoving = False
                self.ralph.pose("walk",5)
                backward = self.ralph.getNetTransform().getMat().getRow3(1)
                #~ backward.setZ(0)
                backward.normalize()
                del self.moveTo
 
 
        self.inst10.destroy()
        self.inst10 = addInstructions(0.55, str(self.ralph.getPos)+"(ralph position):")
 
        self.inst11.destroy()
        self.inst11 = addInstructions(0.50, str(self.ralph.getPos()))
 
        # Store the task time and continue.
        self.prevtime = task.time
        return Task.cont
 
    def ZCord(self, task):
        # Adjust ralph's Z coordinate.
        z=self.terrain.getElevation(self.ralph.getX(),self.ralph.getY())*self.terrain.getRoot().getSz()
        self.ralph.setPos(self.ralph.getX(),self.ralph.getY(),z)
 
 
 
#suka rabotay!!!
w = World()
run()