Pretty simple city scene. Procedurally generated from just 3 textures, 0 models.
Not depicted of course is the driving. NodePaths are “retreated” in the scene over time. The camera stays fixed.
Very cool. I would love to see the code, if you are perhaps willing to share with the rest of us? (Please consider this an expression of interest in seeing it. 
)
As soon as I posted that, I started editing it. It’s being edited!
One texture is in the Panda models. The other two are linked below. If you have my ‘asynchronous live control’ module you can play with the speed and such with assignment statements on the console; the import and initialization for ‘panda_async’ are commented out near the first and last lines.
from panda3d.core import loadPrcFileData
loadPrcFileData("", "show-frame-rate-meter 1")
import direct.directbase.DirectStart
from panda3d.core import *
from direct.interval.IntervalGlobal import *
from pandac.PandaModules import Filename
#import panda_async
import random as ran
import time
import sys
windtex= loader.loadTexture( 'window.png' )
windtex.setWrapU(Texture.WMRepeat)
windtex.setWrapV(Texture.WMRepeat)
windtex.setMinfilter(Texture.FTLinearMipmapLinear)
windtex.setAnisotropicDegree(2)
streettex= loader.loadTexture( 'street.png' )
streettex.setWrapU(Texture.WMClamp)
streettex.setWrapV(Texture.WMClamp)
streettex.setAnisotropicDegree(2)
skytex= loader.loadTexture( r'samples/Carousel/models/env_sky.jpg' )
skytex.setMinfilter(Texture.FTLinearMipmapLinear)
base.cam.setPos( 2.5, 0, 7 )
objs= [ ]
cardmaker= CardMaker( 'cardmaker' )
skynode= cardmaker.generate( )
sky= render.attachNewNode( skynode )
skydist= 500
sky.setScale( skydist* 2, skydist, skydist )
sky.setPos( -skydist, 1000, 0 )
sky.setTexture( skytex )
class Globals:
pause= False
atten= Point3( .003, .003, .003 ) # attenuation on streetlights
lightpos= [ 1, None, 16 ] # positioning on streelights (symmetrical)
lightcol= Point4( 1, .75, 0, 1 ) # color on streetlights
nightambient= Point4(.1,.05,0,1) # nighttime ambient
lightspacing= 125 # spacing between lights
speed= 5.0
nextposL= 0
nextposR= 0
nextposB= 0
nextlightL= 0
nextlightR= lightspacing/ 2.0
def task( taskob ):
if Globals.pause:
return taskob.cont
rear= 500
speed= Globals.speed
_newobjs= [ ]
for obj in objs: # move all objects
obj.setPos( obj, 0, -speed, 0 )
if obj.getY( )> -30:
_newobjs.append( obj )
else:
if obj.getName( ).startswith( 'streetlight' ):
render.clearLight( obj )
obj.removeNode( )
objs[ : ]= _newobjs
Globals.nextposL-= speed
Globals.nextposR-= speed
Globals.nextposB-= speed
Globals.nextlightL-= speed
Globals.nextlightR-= speed
while Globals.nextposB< rear: # replace the street cards
width= 20
height= 20
Globals.nextposB+= height
group= NodePath( 'group' )
group.reparentTo( render )
objs.append( group )
cardmaker.setUvRange( Point2( 0, 0 ), Point2( 1, 1 ) )
cardnode= cardmaker.generate( )
obj= NodePath( cardnode )
obj.reparentTo( group )
group.setPos( -width/ 2, Globals.nextposB, 5 )
obj.setHpr( 0, -90, 0 )
obj.setColor( 1, 1, 1 )
obj.setScale( width, 1, height )
obj.setTexture( streettex )
while 1: # replace the streetlights (as necessary)
if Globals.nextlightL< rear:
which= 'L'
elif Globals.nextlightR< rear:
which= 'R'
else:
break
light= PointLight( 'streetlight pointlight' )
light.setColor( Globals.lightcol )
light.setAttenuation( Globals.atten )
group= NodePath( light )
render.setLight( group )
group.reparentTo( render )
objs.append( group )
width= Globals.lightspacing
if which== 'L':
group.setPos( -Globals.lightpos[ 0 ], Globals.nextlightL, Globals.lightpos[ 2 ] )
Globals.nextlightL+= width
elif which== 'R':
group.setPos( Globals.lightpos[ 0 ], Globals.nextlightR, Globals.lightpos[ 2 ] )
Globals.nextlightR+= width
while 1: # replace the buildings
if Globals.nextposL< rear:
which= 'L'
elif Globals.nextposR< rear:
which= 'R'
else:
break
group= NodePath( 'group' )
group.reparentTo( render )
objs.append( group )
cardmaker.setUvRange( Point2( 0, 0 ), Point2( ran.randint( 2, 20 ), ran.randint( 2, 20 ) ) )
r, g= ran.uniform( .5, 1 ), ran.uniform( .5, 1 )
b= 2- r- g
width= ran.uniform( 10, 20 )
height= ran.uniform( 10, 20 )
cardnode= cardmaker.generate( )
obj= NodePath( cardnode )
obj.reparentTo( group )
obj.setColor( r, g, b )
if which== 'L':
group.setPos( -10, Globals.nextposL, 5 )
obj.setHpr( 90, 0, 0 )
Globals.nextposL+= width
elif which== 'R':
group.setPos( 10, Globals.nextposR+ width, 5 )
obj.setHpr( 270, 0, 0 )
Globals.nextposR+= width
obj.setScale( width, 1, height )
obj.setTexture( windtex )
cardside= cardmaker.generate( )
obj= NodePath( cardside )
obj.reparentTo( group )
obj.setColor( r, g, b )
obj.setScale( width, 1, height )
if which== 'L':
obj.setPos( -width, 0, 0 )
elif which== 'R':
obj.setPos( 0, -width, 0 )
return taskob.cont
base.cam.node( ).getLens( ).setNear( 1 )
base.cam.node( ).getLens( ).setFar( 1001 )
taskMgr.add( task, 'roll task' )
def slow( task ):
time.sleep( .05 )
return task.cont
taskMgr.add( slow, 'slow' )
ambientLight = AmbientLight('ambientLight')
ambientLightNP = render.attachNewNode(ambientLight)
render.setLight(ambientLightNP)
def setlightf( t ):
c1= Point4(1.2,1.2,1.2,1)
c2= Globals.nightambient
c= (c2-c1)*t+c1
ambientLight.setColor( c )
Globals.lightinterval= Sequence(
LerpFunc( setlightf, fromData= 0, toData= 1, duration= 5.0, blendType= 'easeInOut' ),
LerpFunc( setlightf, fromData= 1, toData= 0, duration= 5.0, blendType= 'easeInOut' )
)
Globals.lightinterval.loop( )
def pausefun( ):
Globals.pause= not Globals.pause
if Globals.pause:
Globals.lightinterval.pause( )
else:
Globals.lightinterval.resume( )
base.accept( 'f7', lambda: base.win.saveScreenshot( Filename( 'driving scene 1.png' ) ) )
base.accept( 'f8', lambda: base.win.saveScreenshot( Filename( 'driving scene 2.png' ) ) )
base.accept( 'pause', pausefun )
base.accept( 'escape', sys.exit )
#panda_async.G.__dict__.update( globals( ) )
run( )Window panes: (border matches background)
Street tileage:
Images not loading (they use to my first view).
Cool none the less!
Ah yes I hard coded the images’ paths in the preamble. They’re relative now in an edit of the code.
Thank you very much! I’m sure I’ll find some interesting stuff in there.
I’m trying to add streetlights and I’m getting infuriated. I can’t get the right relative motion… the same formula doesn’t work as for the cards (buildings) because the lights are rotated to face downward. Though pointlights were working.