I'm trying to create a simulation in blender of a person walking.

I did a program to advance one leg 1 degree (and return the other 1 deg) after pressing the space bar but I can't see the advance while the game is executing and instead of that, I see the movement until I stop the game. I think it could be because of the pose mode. But I'm not sure. No error is displayed in the console while executing.

I attach some pictures and the code:

  1. Before running the game: 1. Before running the game:

  2. While running the game nothing moves. 2. While running the game nothing moves.

  3. When I stop it after pressing the Spacebar a few times and it leaves the executing screen it appears it what I think is the final position, but nothing happens while executing. enter image description here

  4. Logic Editor: enter image description here

  5. Code:

    import math
    import bpy
    import numpy as np
    import bge
    from bge import logic

    controller = logic.getCurrentController()
    own = controller.owner

    ob = bpy.data.objects['Armature']
    bpy.context.scene.objects.active = ob
    rhip = ob.pose.bones['Thigh.R']
    rleg = ob.pose.bones['Leg.R']
    rfoot= ob.pose.bones['Foot.R']
    lhip = ob.pose.bones['Thigh.L']
    lleg = ob.pose.bones['Leg.L']
    lfoot= ob.pose.bones['Foot.L']
    # Set rotation mode to Euler XYZ, easier to understand
    # than default quaternions
    rhip.rotation_mode = 'XYZ'
    rleg.rotation_mode = 'XYZ'
    rfoot.rotation_mode = 'XYZ'
    lhip.rotation_mode = 'XYZ'
    lleg.rotation_mode = 'XYZ'
    lfoot.rotation_mode = 'XYZ'
    # select axis in ['X','Y','Z']  <--bone local
    axis = 'Z'
    actual_angle = [0,0,0,0,0,0]
    def refresh_angle():
        global actual_angle
        rhip.rotation_euler.rotate_axis(axis, math.radians(angle[0]))
        rleg.rotation_euler.rotate_axis(axis, math.radians(angle[1]))
        rfoot.rotation_euler.rotate_axis(axis, math.radians(angle[2]))
        lhip.rotation_euler.rotate_axis(axis, math.radians(angle[3]))
        lleg.rotation_euler.rotate_axis(axis, math.radians(angle[4]))
        lfoot.rotation_euler.rotate_axis(axis, math.radians(angle[5]))
    if sensors["Spacebar"].positive:


While in the related question i test channel.location.x += 0.1 and channel.location.x += 0.1 but none work all time print (0,0,0) (i try because i never has move a bone), so i read the armature documentation and location. Finally end up with this script.

from bge import logic

armature = logic.getCurrentController().owner
if not hasattr(logic, 'boneLocation'):
    logic.boneLocation = 0
    logic.boneLocation += 0.5
    channel = armature.channels["moveBone.003"]
    channel.location = [logic.boneLocation, 0, 1]

Blender Game Engine Started <Vector (0.5000, 0.0000, 1.0000)> <Vector (1.0000, 0.0000, 1.0000)> <Vector (1.5000, 0.0000, 1.0000)> <Vector (2.0000, 0.0000, 1.0000)> <Vector (2.5000, 0.0000, 1.0000)> <Vector (3.0000, 0.0000, 1.0000)> <Vector (3.5000, 0.0000, 1.0000)> <Vector (4.0000, 0.0000, 1.0000)>

  • $\begingroup$ Thank you very much. The above code its just working for me for translation and not rotation; it doesn't move the full chain of bones like if it where in pose mode. Did you know one way to move one bone by rotation in some quantity of degrees with implicit movement of the full chain of bones?. Reading Armature I think joint_rotation could work, but I have no idea how to implement it. $\endgroup$
    – Juan
    Dec 6 '17 at 17:58
  • $\begingroup$ I would like to help you while i learn how to do it but i am really busy and that may need a lot of time. Also i don't have a single minimum armature to start testing. I made the above just with one bone $\endgroup$ Dec 6 '17 at 23:20

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