Entity-System-Introduction.md

Entities itself

• consists of named attributes
• like position, velocity, states, ...
• attribute inheritance ?
• entity graph
• parent/child relationships between entities (particle modifier instances --[n:m]--> particle emitter instances)
• event handling
• publisher / subscriber pattern
• triggers events

Management of entity attributes

• which attributes have to be persisted
• which attributes have to be synchronized over network
• specification of the data type of an attribute value
• how to persist attributes (along with the map)
• how to synchronize attributes over network (using network messages)

Entity emitter

• Emits entities
• Use case: pickup emitter for ammo:
• spawns ammo pickup of a configurated type in a specific rate
• bind the spawned pickup entity (add child)
• as long as the child isn't picked up, don't spawn other pickups

Entity modifier

• modify(entity)
• modifies attributes of an entity
• create events based on an entity
• player entity near entity modifier
• Flag stolen
• Flag near player
• Base captured
• entity movement
• Move along segmented paths (bezier curve)
• Path: Segments
• Segment: Start, End, Speed
• Particle emitter configuration

Entity Type renderer

• renders entity of a specific type