Variable MOVEMENT_FORWARD_STEP_ANIMATIONConst

Forward Step - 전진스텝 with Korean Martial Arts Weight Transfer

Advancing step toward opponent with authentic Korean martial arts footwork mechanics. Implements proper weight transfer (체중이동), stepping foot mechanics (디딤발), and pivot foot stability (축발) principles.

Weight Transfer Mechanics (체중이동 원리):

• Phase 1 (0-0.15s): Weight shift to back foot, front leg prepares (준비단계)
• Phase 2 (0.15-0.35s): Front foot lifts and extends forward (이동단계)
• Phase 3 (0.35-0.45s): Heel strikes ground, weight begins transfer (착지단계)
• Phase 4 (0.45-0.6s): Complete weight transfer, foot rolls to flat (안정단계)

Korean Martial Arts Principles:

• 디딤발 (Didimbal): Stepping foot lands heel-first, rolls to ball
• 축발 (Chukbal): Pivot foot maintains balance during weight shift
• 체중이동 (Chejung Idong): Weight transfers smoothly, not abruptly
• 중심이동 (Jungsim Idong): Center of mass moves with body