Upbge python code animations and raycast

Game Engine Game Engine Support and Discussion
1

How do you manage armature animations with python and no logic bricks ?
Same for raycast how can it be done with code and no logic bricks ?
Is there some documentation about using collision detection between two rigibody fully in python code ?

It’s hard to find tutorials, most are mixing code and logic bricks, but i didn’t found tutorials made with python code only covering those topics.

2

I found how to animate, adding this script to the armature object

    scene=bge.logic.getCurrentScene()
    cont = bge.logic.getCurrentController()
    own = cont.owner
   
    own.playAction('IDLE', 0, 20, layer=0, play_mode=bge.logic.KX_ACTION_MODE_PING_PONG)

I have raycast working

scene=bge.logic.getCurrentScene() 

start =  scene.objects['start']
end =  scene.objects['end']

hitObject, hitPosition, hitNormal = own.rayCast(end.worldPosition,start.worldPosition,100)

if hitObject:
    print("Object hit:", hitObject, "at", hitPosition, "the normal at that point is", hitNormal)
else: 
    print("hit nothing")

Is missing script how to detect collision between a rigidbody and other physic objects ?

3

This collision code does not work in Upbge 0.3.
Is there a better way ? Can we get all objects colliding insteda of the first one only ?

scene=bge.logic.getCurrentScene()
cont = bge.logic.getCurrentController()
own = cont.owner

def callback_three(object, point, normal):
print(‘Hit by %r at %s with npormal %s’ % (object.name, point, normal))

def callback_one(object):
print(‘Hit by %r’ % object.name)

def register_callback(controller):
own.collisionCallbacks.append(callback_three)
own.collisionCallbacks.append(callback_one)

4

if you need collision contacts, that is the only way to get them (collision callback)

If I get a minute I will make a example or someone else may beat me too it.

if you don’t need the collision contact you can use a logic sensor - collision - to get access to who you are touching but not where.

2 Likes
5

Both examples would be cool, callback and sensor, python only and no logic bricks :smiley:

6

so even if you love python,

for python SENSORS are essential

they are basically callbacks for your python

condition--------Py

you can run pure python but it’s silly,
logic sensors are basically polling stuff in C
you can’t do the same stuff effectively in py.

1 Like