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I want to create some constraints in BGE with phyton (between a soft body and a dynamic object) and then remove them after a while. I tried this code to save constraint's id:

import bge

p = bge.logic.getCurrentScene().objects["Plane"].getPhysicsId()

o = bge.logic.getCurrentController().owner

o["c"] = bge.constraints.createConstraint(o.getPhysicsId(), p, 1, 0.0, 0.0, 0.0).getConstraintId()

the constraint created and all of parameters seems to be correct but getConstraintId always returns zero and I can't understand why?

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  • $\begingroup$ also here mentioned that it will returns zero if there isn't a constraint ID but i can't figure out why there shouldn't be a constraint ID? $\endgroup$
    – SRH
    Dec 8, 2015 at 6:29
  • $\begingroup$ the code also works well when I change the soft body (plane) to a rigid body. only when it is soft, there isn't a constraint id! $\endgroup$
    – SRH
    Dec 8, 2015 at 7:15

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As an experience I understand that Blender's Game Engine can't create constraints on Soft Bodies dynamically by bge codes. Actually it creates the constraints but you don't have any access to them.

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