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  • 1 (2024-02-10 (Sat) 09:41:45)
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Class: DNAManager

The `DNAManager` is a singleton class responsible for managing entities and components in a pure ecs implementation, allowing for entity creation, component addition and removal, and system updates.

Constructors

• new DNAManager(): DNAManager
  The constructor.
  

Methods

• addComponent(eid: number, component: DNAComponent): void
  The "addComponent" function adds a DNAComponent to an entity. This entity is binded to all matching DNASystem.
  
  • eid: The `eid` parameter is the entity's id.
    
  • component: The `component` parameter is the component to add.
    
    
• createEntity(): number
  The "createEntity" function creates a new entity and returns its uid based on a incremented global index.
  
  
• draw(): void
  The "draw" function draw all systems.
  
  
• findEntities(componentTypeName: string)
  The "findEntities" function takes a component typename and returns an array of entity ids that have that component.
  
  • componentTypeName: The parameter `componentTypeName` is a string that represents the name of a component type.
    
    
• findEntity(componentTypeName: string): number
  The "findEntity" function retrieves the first entity that has a specific component type and returns its entity's id.
  
  • componentTypeName: The `componentTypeName` parameter is a string that represents the name of a component type.
    
    
• findSystems(tag: string)
  The "findSystems" function returns an array of DNASystem objects that have that tag.
  
  • tag: A string representing the tag to search.
    
    
• getComponent(eid: number, typename: string): DNAComponent
  The "getComponent" function retrieves a specific component from an entity.
  
  • eid: The `eid` parameter is the entity's id.
    
  • typename: The `typename` parameter is a string that represents the name of a component type.
    
    
• getComponents(eid: number): Map
  The "getComponents" function retrieves components from an entity.
  
  • eid: The `eid` parameter is the entity's id.
    
    
• getSystems()
  The "getSystems" function returns the systems.
  
  
• hasComponent(eid: number, typename: string): boolean
  The function checks if an entity has a specific component.
  
  • eid: The `eid` parameter is the entity's id.
    
  • typename: The `typename` parameter is a string that represents the name of a component type.
    
    
• hasEntity(id: number): boolean
  The "hasEntity" function checks if an entity exists.
  
  • id: The `id` parameter is the entity's id.
    
    
• removeComponent(eid: number, typename: string): void
  The "removeComponent" function removes a DNAComponent to an entity. This entity is unbinded from all unmatching DNASystem.
  
  • eid: The `eid` parameter is the entity's id.
    
  • typename: The `typename` parameter is a string that represents the name of a component type.
    
    
• removeComponentIfExist(eid: number, typename: string): boolean
  The "removeComponentIfExist" function removes a component from an entity if it exists and returns true, otherwise it returns false.
  
  • eid: The `eid` parameter is the entity's id.
    
  • typename: The `typename` parameter is a string that represents the name of a component type.
    
    
• removeEntity(eid: number): void
  The "removeEntity" function removes entity.
  
  • eid: The `eid` parameter is the entity's id.
    
    
• reset(): void
  The "reset" function resets all resources.
  
  
• setup(systems: DNASystem[]): void
  The "setup" function initialize the manager and sets all systems ready to run.
  
  • systems: An array of DNASystem objects.
    
    
• update(ts: number): void
  The "update" function update all systems.
  
  • ts: The `ts` parameter stands for "timestep".