Variable MOVEMENT_BACKWARD_STEP_ANIMATIONConst

Backward Step - 후진스텝 with Korean Martial Arts Weight Transfer

Retreating step from opponent with authentic Korean martial arts footwork. Implements proper rear weight transfer and defensive positioning.

Weight Transfer Mechanics (후퇴 체중이동):

• Phase 1 (0-0.15s): Weight shift to front foot, back leg prepares
• Phase 2 (0.15-0.35s): Back foot lifts and extends backward
• Phase 3 (0.35-0.45s): Ball of foot touches down, weight begins transfer
• Phase 4 (0.45-0.6s): Complete weight transfer, maintain guard

Korean Martial Arts Principles:

• Backward steps land on ball of foot first (unlike forward heel-first)
• Maintain forward-facing guard throughout retreat
• Center of mass moves smoothly backward
• Front leg remains ready to kick or defend