Function checkForFall

checkForFall(
    player: PlayerState,
    combatSystem: CombatSystem,
    lastImpactAngle?: number,
    attackAngle?: number,
): FallCheckResult
Checks if player should fall and determines fall animation.

Integrates BalanceSystem and ConsciousnessSystem to check fall conditions. Returns animation state to transition to if fall is triggered.

Korean terminology:
- 균형상실 (Gyunhyeong Sangsil): Balance loss
- 의식상실 (Uisik Sangsil): Consciousness loss
Parameters
- player: PlayerState
  Player state to check
- combatSystem: CombatSystem
  Combat system with balance and consciousness systems
- OptionallastImpactAngle: number
  Optional angle of last impact (for consciousness falls)
- OptionalattackAngle: number
  Optional angle of current attack (for balance falls)
Returns FallCheckResult
Fall check result with animation state
Example
```
const fallCheck = checkForFall(player, combatSystem, undefined, attackAngle);
if (fallCheck.shouldFall && fallCheck.animationState) {
  animationMachine.transitionTo(fallCheck.animationState);
  console.log(`Player falling: ${fallCheck.reason}`);
}
```
Korean
낙법확인
- Defined in systems/combat/FallIntegration.ts:63