Yume Project 3.0
Touhou-inspired Danmaku game made in C only
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component.h
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1
6#pragma once
7
8#include "ecs.h"
9
10#include <stdint.h>
11#include <string.h>
12
13
62#define DEFINE_COMPONENT_MANAGER(Type, Number) \
63 typedef struct { \
64 Type dense[Number]; \
65 Entity entity_lookup[Number]; \
66 uint32_t sparse[MAX_ENTITIES]; \
67 int count; \
68 } Type##Manager; \
69 \
70 static inline void Type##_init(Type##Manager *mgr) { \
71 mgr->count = 0; \
72 memset(mgr->sparse, NULL_INDEX, sizeof(mgr->sparse)); \
73 } \
74 \
75 static inline void Type##_add(Type##Manager *mgr, Entity e, Type data) { \
76 if (mgr->sparse[e] != NULL_INDEX) { \
77 mgr->dense[mgr->sparse[e]] = data; \
78 return; \
79 } \
80 int id = mgr->count++; \
81 if (id >= Number) \
82 return; \
83 mgr->dense[id] = data; \
84 mgr->sparse[e] = id; \
85 mgr->entity_lookup[id] = e; \
86 } \
87 \
88 static inline Type *Type##_get(Type##Manager *mgr, Entity e) { \
89 uint32_t id = mgr->sparse[e]; \
90 if (id == NULL_INDEX) \
91 return NULL; \
92 return &mgr->dense[id]; \
93 } \
94 \
95 static inline void Type##_remove(Type##Manager *mgr, Entity e) { \
96 uint32_t id = mgr->sparse[e]; \
97 if (id == NULL_INDEX) \
98 return; \
99 int last_id = --mgr->count; \
100 Entity last_e = mgr->entity_lookup[last_id]; \
101 mgr->dense[id] = mgr->dense[last_id]; \
102 mgr->entity_lookup[id] = last_e; \
103 mgr->sparse[last_e] = id; \
104 mgr->sparse[e] = NULL_INDEX; \
105 } \
106 \
107 static inline Entity Type##_get_entity(Type##Manager *mgr, int dense_id) { \
108 return mgr->entity_lookup[dense_id]; \
109 }
110
111#define DECLARE_GETTER(Component, type, champ) \
112 static inline type Component##_get_##champ(Component *p) { return p->champ; }
113// Sprite_get_textureID();
114
115#define DECLARE_SETTER(Component, type, champ) \
116 static inline void Component##_set_##champ(Component *p, type champ) { \
117 p->champ = champ; \
118 }
119// Sprite_set_textureID(&textureID);
120
121#define DECLARE_SETTER_GETTER(Component, type, champ) \
122 DECLARE_SETTER(Component, type, champ) \
123 DECLARE_GETTER(Component, type, champ)
ecs.h
Types et déclarations utilisés dans l'ECS.