Methods instead of Sensors

Game Engine Game Engine Support and Discussion
1

Hey community,

is it possible to code BGE scripts more like scripting in Unity/Godot? I mean calling events or overwrite methods instead of adding sensors and connecting it to a script via Blenders GUI?

2

Yes. use the Python controller to activate scripts. Scripts for the BGE are written in Python.

3

Sorry, but I meant inside a script.

for example, in unity you have methods like Update() or OnTriggerEnter() which you overwrite to execute code on specific events.

4

Try UpBge, it got the py components. They are similar to what you want.
Links: https://pythonapi.upbge.org/bge.types.KX_PythonComponent.html
https://doc.upbge.org/releases.php?id=0.0.6

5

we also have Collison callback and predraw callback and postdraw callback

a ‘generalized’ sensor could monitor many objects and run logic when conditions dictate using a list it fills


activate =[]
def Ray_Ccd_collision(obj):
    #command meat

commandDict = { 'Ray_CcD_collision':Ray_CcD_collision , etc....}
senslist = [ ['Ray_CcD_collision', object1],['near',object,prop] ]

for entry in senslist:
    command = commandDict[entry[0]]
    return = command(entry[1])
    if returned!=None:
        activate.append(returned)

one could use collision callbacks, but my solution is to spawn a object that is a rigid body and then suspend dynamics / rigid body sim etc depending on the obj being bound to it, and parent the object to it and use a Collison sensor in the object.

added = own.scene.addObject('CollisionSensor',own,0)
added.replaceMesh('shapeboundname',1,1)
v=obj.worldLinearVelocity.copy()
obj.setParent(added)
obj.worldLinearVelocity=v