| Building | 
 Buildings that you see in game. 
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| CannonBall | 
 Cannonball entity and the methods to get it flying. 
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| Chest | 
 Added for Assessment 2 in order to implement quest functionality
 Simple entity shown on locate quests origin 
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| College | 
 Defines a college and its associated buildings. 
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| Entity | 
 The base class for all entities in the game. 
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| Indicator | 
 Added for Assessment 2 in order to increase visual clarity on Kill Quests 
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| NPCShip | 
 NPC ship entity class. 
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| Obstacle | 
 // Added for Assessment 2 Requirements //
 A class for obstacles in the game world, both trigger or contact. 
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| Player | 
 Player's ship entity. 
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| PowerUpPickup | 
 Added for Assessment 2
 Simple entity shown on locate quests origin 
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| Ship | 
 Base class for game ships, Player & NPC. 
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| Weather | 
 Added for Assessment 2 in order to meet weather condition requirements 
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| WorldMap | 
 The world map 
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