Chain: play key1, then when it completes, play key2
Set facing direction (flips sprite horizontally)
Face toward a point
Get current animation key
Check if a specific animation is currently playing
Optionalkey: stringPlay animation, optionally flipping sprite based on direction
Play and wait for completion (for non-looping animations)
Set animation speed multiplier
Stop the current animation
Simplified sprite animator that handles animation direction (flipX) and provides a clean API for common animation patterns.