AddEntity adds the entity to all systems that have been added via AddSystemInterface. If the system was added via AddSystem the entity will not be added to it.
(e Identifier)
| 60 | // AddSystemInterface. If the system was added via AddSystem the entity will not be |
| 61 | // added to it. |
| 62 | func (w *World) AddEntity(e Identifier) { |
| 63 | if w.sysIn == nil { |
| 64 | w.sysIn = make(map[reflect.Type][]reflect.Type) |
| 65 | } |
| 66 | if w.sysEx == nil { |
| 67 | w.sysEx = make(map[reflect.Type][]reflect.Type) |
| 68 | } |
| 69 | |
| 70 | search := func(i Identifier, types []reflect.Type) bool { |
| 71 | for _, t := range types { |
| 72 | if reflect.TypeOf(i).Implements(t) { |
| 73 | return true |
| 74 | } |
| 75 | } |
| 76 | return false |
| 77 | } |
| 78 | for _, system := range w.systems { |
| 79 | sys, ok := system.(SystemAddByInterfacer) |
| 80 | if !ok { |
| 81 | continue |
| 82 | } |
| 83 | |
| 84 | if ex, not := w.sysEx[reflect.TypeOf(sys)]; not { |
| 85 | if search(e, ex) { |
| 86 | continue |
| 87 | } |
| 88 | } |
| 89 | if in, ok := w.sysIn[reflect.TypeOf(sys)]; ok { |
| 90 | if search(e, in) { |
| 91 | sys.AddByInterface(e) |
| 92 | continue |
| 93 | } |
| 94 | } |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | // Systems returns the list of Systems managed by the World. |
| 99 | func (w *World) Systems() []System { |