Implement tag on entities

Internal Changelog:
- Use data store similar to component map
- Add init and free for entities tag
- Use enum instead of char for tag
- Switch to use clang for compilation
- Add -Wall for compilation

CMakeLists.txt

@@ -1,5 +1,6 @@
 set(PROJECT_NAME HATPC_remake)
-
+set(CMAKE_C_COMPILER clang)
+set(CMAKE_C_FLAGS "-Wall")
 cmake_minimum_required(VERSION 3.22.1)
 project(${PROJECT_NAME} C)
 set(CMAKE_C_STANDARD 99)

entManager.c

@@ -7,6 +7,10 @@ void init_entity_manager(EntityManager_t *p_manager)
     {
         sc_map_init_64v(p_manager->component_map + i, MAX_COMP_POOL_SIZE, 0);
     }
+    for (size_t i=0; i<N_TAGS; ++i)
+    {
+        sc_map_init_64v(p_manager->entities_map + i, MAX_COMP_POOL_SIZE, 0);
+    }
     sc_queue_init(&p_manager->to_add);
     sc_queue_init(&p_manager->to_remove);
 }
@@ -28,6 +32,7 @@ void update_entity_manager(EntityManager_t *p_manager)
         {
             free_component_to_mempool((ComponentEnum_t)comp_type_idx, comp_idx);
             sc_map_del_64v(&p_manager->component_map[comp_type_idx], comp_idx);
+            sc_map_del_64v(&p_manager->entities_map[p_entity->m_tag], e_idx);
         }
         free_entity_to_mempool(e_idx);
         sc_map_del_64v(&p_manager->entities, e_idx);
@@ -35,8 +40,9 @@ void update_entity_manager(EntityManager_t *p_manager)
     sc_queue_clear(&p_manager->to_remove);
     sc_queue_foreach (&p_manager->to_add, e_idx)
     {
-        Entity_t *ent = get_entity_wtih_id(e_idx);
-        sc_map_put_64v(&p_manager->entities, e_idx, (void *)ent);
+        Entity_t *p_entity = get_entity_wtih_id(e_idx);
+        sc_map_put_64v(&p_manager->entities, e_idx, (void *)p_entity);
+        sc_map_put_64v(&p_manager->entities_map[p_entity->m_tag], e_idx, (void *)p_entity);
     }
     sc_queue_clear(&p_manager->to_add);
 
@@ -61,14 +67,19 @@ void free_entity_manager(EntityManager_t *p_manager)
     {
         sc_map_term_64v(p_manager->component_map + i);
     }
+    for (size_t i=0; i<N_TAGS; ++i)
+    {
+        sc_map_term_64v(p_manager->entities_map + i);
+    }
     sc_queue_term(&p_manager->to_add);
     sc_queue_term(&p_manager->to_remove);
 }
 
-Entity_t *add_entity(EntityManager_t *p_manager, const char *tag)
+Entity_t *add_entity(EntityManager_t *p_manager, EntityTag_t tag)
 {
     unsigned long e_idx = 0;
     Entity_t * p_ent = new_entity_from_mempool(&e_idx);
+    p_ent->m_tag = tag;
     if (p_ent)
     {
         sc_queue_add_last(&p_manager->to_add, e_idx);
@@ -78,8 +89,6 @@ Entity_t *add_entity(EntityManager_t *p_manager, const char *tag)
 
 void remove_entity(EntityManager_t *p_manager, unsigned long id)
 {
-    unsigned long comp_type, comp_id;
-
     Entity_t *p_entity = sc_map_get_64v(&p_manager->entities, id);
     if(!sc_map_found(&p_manager->entities)) return;
     // This only marks the entity for deletion

entManager.h

@@ -7,8 +7,9 @@
 typedef struct EntityManager
 {
     // All fields are Read-Only
-    struct sc_map_64v entities;
-    struct sc_map_64v component_map[N_COMPONENTS];
+    struct sc_map_64v entities; // id : entity
+    struct sc_map_64v entities_map[N_TAGS]; // [{id: ent}]
+    struct sc_map_64v component_map[N_COMPONENTS]; // [{id: comp}, ...]
     struct sc_queue_uint to_add;
     struct sc_queue_uint to_remove;
 }EntityManager_t;
@@ -18,7 +19,7 @@ void update_entity_manager(EntityManager_t *p_manager);
 void clear_entity_manager(EntityManager_t *p_manager);
 void free_entity_manager(EntityManager_t *p_manager);
 
-Entity_t *add_entity(EntityManager_t *p_manager, const char *tag);
+Entity_t *add_entity(EntityManager_t *p_manager, EntityTag_t tag);
 void remove_entity(EntityManager_t *p_manager, unsigned long id);
 
 void *add_component(EntityManager_t *p_manager, Entity_t *entity, ComponentEnum_t comp_type);

entity.h

@@ -2,11 +2,19 @@
 #define __ENTITY_H
 #include <stdbool.h>
 #include "sc/map/sc_map.h"
-#define MAX_TAG_LEN 32
+
+#define N_TAGS 3
+enum EntityTag
+{
+    NO_ENT_TAG,
+    PLAYER_ENT_TAG,
+    ENEMY_ENT_TAG,
+};
+typedef enum EntityTag EntityTag_t;
 typedef struct Entity
 {
     unsigned long m_id;
-    char m_tag[MAX_TAG_LEN];
+    EntityTag_t m_tag;
     bool m_alive;
     struct sc_map_64 components;
 }Entity_t;

main.c

@@ -11,10 +11,10 @@ int main(void)
     init_entity_manager(&manager);
 
     puts("Creating two entities");
-    Entity_t *p_ent = add_entity(&manager, "player");
+    Entity_t *p_ent = add_entity(&manager, PLAYER_ENT_TAG);
     CBBox_t * p_bbox = (CBBox_t *)add_component(&manager, p_ent, CBBOX_COMP_T);
     p_bbox->x = 15;
-    p_ent = add_entity(&manager, "enemy");
+    p_ent = add_entity(&manager, ENEMY_ENT_TAG);
     p_bbox = (CBBox_t *)add_component(&manager, p_ent, CBBOX_COMP_T);
     p_bbox->x = 40;
     update_entity_manager(&manager);

mempool.c

@@ -72,7 +72,7 @@ Entity_t* new_entity_from_mempool(unsigned long *p_e_idx)
     Entity_t * ent = entity_mem_pool.entity_buffer + e_idx;
     sc_map_clear_64(&ent->components);
     ent->m_alive = true;
-    memset(ent->m_tag, 0, MAX_TAG_LEN);
+    ent->m_tag = NO_ENT_TAG;
     return ent;
 }