Slingshot Aiming: Pull back with the mouse to aim. The drag distance and direction dictate the launch velocity (inverted).
Trajectory Prediction: Real-time dotted parabola overlay that perfectly matches the stone's actual flight path.
Catapult Arm Animation: Smooth, independent swing mechanics. The arm shoots forward, stays up while the stone flies, and only returns to the loaded position after the stone is destroyed.

Destructible Cross-Section Walls: The castle is built from a grid of individual cells. The stone destroys cells within a specific blast radius upon impact.
Structural Integrity: Wall cells automatically check for support. If the underlying blocks are destroyed, floating blocks will dynamically fall to the ground using gravity.
Procedural Layout: The castle, towers, and king's room are generated programmatically with varying heights and wall gaps.

Particle System: Gravity-affected explosions spawning fire, smoke, and debris upon impact.
Victory Screen: A large, dimmed overlay displaying "VICTORY!" when the King is hit, followed by an automated 3-second level reset.
Custom Drawing: All graphics (catapult, walls, background) are strictly rendered using the Skia Canvas API (Paths, Paints, Translations, Rotations).