M7 behaviours on physical animation, optional (L6)

Part of #853. L6: behaviours, optional.

Balance, catch steps, staggers, protective falls, crawl and writhe, rebuilt on L4 with the animation as the reference (Euphoria-style behaviours over a powered ragdoll). They are measured against L5's plain ragdoll and get-up, and ship only where they look better.

Parked until M6 is done: #790 (its steps 3 to 5 are split into M4 and M5), #778, #847, #767, #705, #718, #752 and #625.

Reopened: #891's merge (6fda12b) closed this before its list was met. Not started. The behaviours on top of physical animation (#858) and the get-ups (#859): balance, catch steps and staggers, Euphoria style, as nodes driving L4.

These closed issues are its work, each to be measured on the real figure:

Motion: animation as the reference, physics as the body (compliant muscles with feedforward, balance through the legs, behaviours as layers) #790: the animation as the reference and physics as the body: compliant muscles with feedforward, balance through steps.
motion: no weight shift; a standing figure can't carry its weight over one foot before lifting the other #705: no weight shift. A standing figure can't carry its weight over one foot before lifting the other.
motion: a POWERED figure doesn't follow its animation's footwork; a stance change drags the legs instead of stepping #767: a POWERED figure doesn't follow its animation's footwork; a stance change drags the legs instead of stepping.
motion: a POWERED figure's feet slide along the ground while no step is under way, 50 to 80 cm a shove #778: a POWERED figure's feet slide along the ground while no step is under way, 50 to 80 cm a shove.
motion: shoved again and again, standing figures drift off their spots, 7 cm a cycle and 14 m in an hour of the showcase #847: shoved again and again, standing figures drift off their spots, 7 cm a cycle and 14 m an hour.
motion: after a stagger a figure can stand leaning 0.2 to 0.37 rad for seconds, then stumble with nothing touching it #718: after a stagger, a figure can stand leaning 0.2 to 0.37 rad for seconds, then stumble with nothing pushing it.
motion: a hard side stagger turns the figure 10 to 45 degrees off its heading; test_stagger's 10-degree check (#689) passes by chance #752: a hard side stagger turns the figure 10 to 45° off its heading.
ae3d.motion: a figure on the ground cannot crawl -- a down figure keeps 4% of its arm muscle, and at full muscle its arms move it 0.07-0.18 m in 10 s (the pull never takes the chest's weight) #625: a figure on the ground can't crawl: a down figure keeps 4% of its arm muscle.
What a game's day asks of a figure: sit, lie down, eat, kneel, work, carry, fight, each with the number it is judged by #825: what a game's day asks of a figure (sit, lie down, eat, kneel, work, carry, fight), each with the number it is held to.

Done when each is met and measured.

Reopened: #905's merge (68934a3) closed this, but it carried only the hand-off between writers (animator.pause, resume, share_take, safe behaviour removal). The remaining work is as written above.

motion: heading_off; the POWERED walk in place measured (#938, #968)

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M7 behaviours on physical animation, optional (L6) #861

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M7 behaviours on physical animation, optional (L6) #861

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nicolas-maman commented on Nov 1, 2026

nicolas-maman commented on Nov 2, 2026

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