System Design

Overview

This system design outlines the functional relationships between the core characters (player cat, human chaser) and the evolving structure of the game world (scenes/rooms) as the player progresses. The design focuses on the flow of gameplay from room to room, conditions for progression, and interactions between player and NPC.

Characters

Cat (Player)

• Starts in the hallway.
• Can explore and interact with destructible objects.
• Progresses by destroying a set number of objects per room.
• Triggers room unlocks and human chaser spawn.

Human (Chaser #1)

• Only spawns once the player unlocks the bedroom.
• Actively chases the cat after spawning.
• If the cat is caught, the game resets to the beginning.
• Does not appear before the bedroom is unlocked so the player can familiarize themselves with the game.

Dog (Chaser #2)

• Only Spawns once the player unlocks more rooms (mid/late-game).
• Faster than the Human and operates on simpler, aggressive AI.
• If the cat is caught, the game resets to the beginning.
• Does not appear before mid/late-game milestone so the player can familiarize themselves with the Human (Chaser #1).

Scenes / Rooms

Room	Entry Condition	Exit Condition / Unlock Trigger
Hallway	Default starting location	Destroy objects to unlock Living Room
Living Room	Unlocked from the start	Destroy objects to unlock Bedroom
Bedroom	Unlock spawns human chaser	Destroy objects to unlock next room
Additional Rooms	Progressively unlocked via object destruction	Final score unlocks Apartment Exit
Exit	Only unlocked at final score threshold	Player must reach this room to win

Class Relationship Diagram