Beginer, I need a Template code Panda3d with tweening.

Scripting Issues
1

Sir,

I’m new on P3D and i come from Blitz3d world.
On Blitz3d i have a standard useful template. I woul like to do the same with P3D.

My Blitz3d code is the following.

;Global variables
t=0
myCam=0
myCube=0
myLight=0
lastFPS=0
FPS=0

; Environment Settings
Graphics3D 640, 480, 0, 2
SetBuffer BackBuffer()
SeedRnd MilliSecs()
AppTitle "My Blitz Application"
t = MilliSecs() + 1000

; Create my app camera, cube and light
myCam=CreateCamera()
myCube=CreateCube()
PositionEntity myCube, 0,0,7
myLight=CreateLight()

; Main loop
While Not KeyDown(1)

    ; Frame rate
    If MilliSecs() >= t Then
        lastFPS = FPS
        FPS = 0
        t = MilliSecs() + 1000
    End If
    FPS = FPS + 1
    
	TurnEntity myCube,.4,-.2,-0.5
    RenderWorld
    
    Text 0,0, "FPS="+lastFPS
    Flip False
	
Wend

EndGraphics
End

Can you help me to translate this on Panda3D, please ?

2

Another fellow blitzer :slight_smile:.

Anyways, there is not an easy way to do tweening in Panda3D, although I have a suspicion that my code posted in the code snippets forum is awful close (just slow as molasses for complex scenes)…it really needs to be rewritten in c++…

Anyways, the best way to do things in Panda is to use delta timing, which can be accessed by creating a task and then using task.dt.

so…in code:

import direct.directbase.DirectStart
from pandac.PandaModules import *

class game(object):
   def __init__(self):
       #do initialization code...
       taskMgr.add(self.update,'update task')
   def update(self,task):
       #called once a frame...
       return task.cont

game()
run()
3

hi patmaba

did you already checked out the hello world in the manual? It shows a simple setup or template with a ‘tweening’ of the camera turning around a panda in a simple environment. For more powerful ‘tweenings’, here called intervals, you would go in the ‘intervals’ section of the manual, clicking here.

enjoy!

4

thanks for your feedback

How to set a FPS to 60 frame per second ?

Doc say about Interval it’s set a time to execute a specific code. It’s like a timer expired.

Second question, what about the createcube from b3d in p3d solution ?