EPIC: Echolocation / Sonar System

User Story 1 – Sonar Navigation

As a player, I want to emit a sonar pulse so that I can perceive my surroundings without relying on the torch.

Acceptance Criteria

• Sonar can be activated via a dedicated input
• A pulse originates from the player and propagates outward
• Nearby terrain and objects are revealed temporarily
• Revealed areas fade back into darkness after a short duration

User Story 2 – Power-Efficient Alternative

As a player, I want sonar to use less power than the torch so that I am encouraged to rely on it as my primary navigation tool.

Acceptance Criteria

• Sonar consumes significantly less power than torch usage
• Power drain difference is noticeable during gameplay
• Sonar alone is sufficient for basic navigation

User Story 3 – Strategic Limitation

As a player, I want sonar to have limitations so that I must use it thoughtfully rather than constantly.

Acceptance Criteria

• Sonar has a cooldown or limited pulse rate