71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
#ifndef ECS_H
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#define ECS_H
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#include <stdarg.h>
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#include <stddef.h>
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#include "linked_list.h"
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typedef enum component_type_t {
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#define COMPONENT(NAME, ...) NAME,
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#include "components.def"
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} component_type_t;
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const char *component_type_to_name(component_type_t component_type);
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// Component forwarding
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typedef struct component_t component_t;
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// Component init function. It is called when component added to entity. This function is necessary.
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typedef int (*component_init_t)(component_t *component);
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// Component update function. It is called in the main loop to update the component. This function is necessary.
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typedef int (*component_update_t)(component_t *component);
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// Component draw function. It is called in the main loop to draw the component on screen. This function is not necessary.
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typedef int (*component_draw_t)(const component_t *component);
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// Component deleter function. It is called when the component is removed. It should free the data in the component data but not the component itself.
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typedef int (*component_deleter_t)(component_t *component);
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typedef struct component_t {
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component_init_t init;
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component_update_t update;
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component_draw_t draw;
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void *data;
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component_deleter_t deleter;
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struct entity_t *entity;
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component_type_t type;
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} component_t;
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int create_component(component_t *component, va_list args);
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int destroy_component(component_t *component);
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typedef struct entity_t {
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size_t id;
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size_t draw_priority;
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linked_list_t components;
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} entity_t;
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int create_entity(entity_t *entity, va_list args);
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int destroy_entity(entity_t *entity);
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component_t *entity_new_component(entity_t *entity, component_type_t component_type);
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int update_entity(entity_t *entity);
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int draw_entity(entity_t *entity);
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component_t *entity_get_component(const entity_t *entity, component_type_t component_type);
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typedef struct entity_manager_t {
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linked_list_t entities;
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} entity_manager_t;
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void entity_manager_init(void);
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int entity_manager_exit(void);
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entity_t *entity_manager_new_entity(size_t id);
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int entity_manager_update(void);
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int entity_manager_draw(void);
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int entity_manager_remove_entity(const unsigned int id);
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#endif // ECS_H
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