7 * Declare a new registry.
9 * Don't forget to call `REGISTER_REGISTRY`:
10 * REGISTER_REGISTRY(Foos)
12 #define REGISTRY(id, max) \
13 void Register##id() {} \
14 const int id##_MAX = max; \
15 noref entity _##id[id##_MAX], id##_first, id##_last; \
17 entity _##id##_from(int i, entity null) { if (i >= 0 && i < id##_COUNT) { entity e = _##id[i]; if (e) return e; } return null; }
19 REGISTRY(Registries, BITS(8))
21 /** registered item identifier */
22 .string registered_id;
25 * Register a new entity with a registry.
26 * Must be followed by a semicolon or a function body with a `this` parameter.
27 * Wrapper macros may perform actions after user initialization like so:
28 * #define REGISTER_FOO(id) \
29 * REGISTER(Foos, FOO, id, m_id, NEW(Foo)); \
30 * REGISTER_INIT_POST(FOO, id) { \
31 * print("Registering foo #", this.m_id + 1, "\n"); \
33 * REGISTER_INIT(FOO, id)
36 * @param registry The registry to add each entity to.
37 * @param ns Short for namespace, prefix for each global (ns##_##id)
38 * @param id The identifier of the current entity being registered
39 * @param fld The field to store the locally unique unique entity id
40 * @param inst An expression to create a new instance, invoked for every registration
42 #define REGISTER(...) EVAL(OVERLOAD(REGISTER, __VA_ARGS__))
43 #define REGISTER_5(registry, ns, id, fld, inst) REGISTER_4(registry, ns##_##id, fld, inst)
44 #define REGISTER_4(registry, id, fld, inst) \
46 REGISTER_INIT(id) {} \
47 REGISTER_INIT_POST(id) {} \
48 void Register_##id() \
50 if (registry##_COUNT >= registry##_MAX) LOG_FATALF("Registry capacity exceeded (%s)", ftos(registry##_MAX)); \
51 entity this = id = inst; \
52 this.registered_id = #id; \
53 this.fld = registry##_COUNT; \
54 _##registry[registry##_COUNT] = this; \
56 if (!registry##_first) registry##_first = this; \
57 if (registry##_last) registry##_last.REGISTRY_NEXT = this; \
58 registry##_last = this; \
59 Register_##id##_init(this); \
60 Register_##id##_init_post(this); \
62 ACCUMULATE_FUNCTION(Register##registry, Register_##id) \
65 #define REGISTER_INIT(id) [[accumulate]] void Register_##id##_init(entity this)
66 #define REGISTER_INIT_POST(id) [[accumulate]] void Register_##id##_init_post(entity this)
68 /** internal next pointer */
69 #define REGISTRY_NEXT enemy
70 .entity REGISTRY_NEXT;
72 #define REGISTRY_SORT(...) EVAL(OVERLOAD(REGISTRY_SORT, __VA_ARGS__))
73 #define REGISTRY_SORT_1(id) REGISTRY_SORT_2(id, 0)
74 #define REGISTRY_SORT_2(id, skip) \
75 void _REGISTRY_SWAP_##id(int i, int j, entity pass) \
77 i += skip; j += skip; \
79 entity a = _##id[i], b = _##id[j]; \
83 entity a_next = a.REGISTRY_NEXT, b_next = b.REGISTRY_NEXT; \
84 a.REGISTRY_NEXT = b_next; \
85 b.REGISTRY_NEXT = a_next; \
87 if (i == 0) id##_first = b; \
88 else _##id[i - 1].REGISTRY_NEXT = b; \
90 if (j == 0) id##_first = a; \
91 else _##id[j - 1].REGISTRY_NEXT = a; \
93 int _REGISTRY_CMP_##id(int i, int j, entity pass) \
95 i += skip; j += skip; \
96 string a = _##id[i].registered_id; \
97 string b = _##id[j].registered_id; \
98 return strcmp(a, b); \
100 STATIC_INIT(Registry_sort_##id) \
102 heapsort(id##_COUNT - (skip), _REGISTRY_SWAP_##id, _REGISTRY_CMP_##id, NULL); \
105 #define REGISTRY_HASH(id) Registry_hash_##id
107 [[accumulate]] void Registry_check(string r, string server) { }
108 [[accumulate]] void Registry_send_all() { }
111 void Registry_send(string id, string hash);
113 #define Registry_send(id, hash)
116 #define REGISTRY_CHECK(id) \
117 string REGISTRY_HASH(id); \
118 STATIC_INIT(Registry_check_##id) \
120 string algo = "SHA256"; \
123 FOREACH(id, true, LAMBDA(s = strcat(s, join, it.registered_id))); \
124 s = substring(s, strlen(join), -1); \
125 string h = REGISTRY_HASH(id) = strzone(digest_hex(algo, s)); \
126 LOG_TRACEF(#id ": %s\n[%s]\n", h, s); \
128 void Registry_check(string r, string sv) \
132 string cl = REGISTRY_HASH(id); \
135 LOG_FATALF("client/server mismatch (%s).\nCL: %s\nSV: %s\n", r, cl, sv); \
139 void Registry_send_all() { Registry_send(#id, REGISTRY_HASH(id)); } \
141 #define REGISTER_REGISTRY(...) EVAL(OVERLOAD(REGISTER_REGISTRY, __VA_ARGS__))
142 #define REGISTER_REGISTRY_1(id) REGISTER_REGISTRY_2(id, #id)
143 #define REGISTER_REGISTRY_2(id, str) \
144 ACCUMULATE_FUNCTION(__static_init, Register##id) \
145 CLASS(id##Registry, Object) \
146 ATTRIB(id##Registry, m_name, string, str) \
147 ATTRIB(id##Registry, REGISTRY_NEXT, entity, id##_first) \
148 ENDCLASS(id##Registry) \
149 REGISTER(Registries, REGISTRY, id, m_id, NEW(id##Registry));