hip.component.base source code

1 module hip.component.base;
2 
3 interface IComponent
4 {
5     int getID();
6     string getName();
7 }
8 
9 mixin template IncludeComponents(Components...)
10 {
11     static assert(is(typeof(this) : IComponentizable));
12     private IComponent[] components;
13     static foreach(C; Components)
14     {
15         static assert(is(C : IComponent), C.stringof ~ " is not a component!");
16         mixin("private C _"~__traits(identifier, C)~";");
17     }
18 
19     void initializeComponents()
20     {
21         static if(is(typeof(super) : IComponentizable))
22             super.initializeComponents();
23         static foreach(C; Components)
24         {{
25             alias mem =  __traits(getMember, typeof(this), "_"~__traits(identifier, C));
26             mem = new C();
27             components~= mem;
28         }}
29     }
30 
31     IComponent getComponentBase(int id)
32     {
33         foreach(c; components)
34             if(c.getID() == id)
35                 return c;
36         return null;
37     }
38 }
39 
40 class IBaseComponent(T) : IComponent
41 {
42     final int getID(){return getComponentID!T;}
43     final string getName(){return __traits(identifier, T);}
44 }
45 
46 interface IComponentizable
47 {
48     IComponent getComponentBase(int id);
49     T getComponent(T)() if(is(T : IComponent)) {return cast(T)getComponentBase(getComponentID!T);}
50 
51 }
52 
53 private __gshared int compID = 0;
54 private int getComponentID(T)()
55 {
56     static int _compId = 0;
57     if(_compId == 0)
58         _compId = ++compID;
59     return _compId;
60 }