110 lines
2.7 KiB
C
110 lines
2.7 KiB
C
/**
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* Copyright (c) 2026 Dominic Masters
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*
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* This software is released under the MIT License.
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* https://opensource.org/licenses/MIT
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*/
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#pragma once
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#include "entitybase.h"
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#define X(enumName, type, field, init, dispose) \
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// do nothing
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#include "componentlist.h"
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#undef X
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typedef union {
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#define X(enumName, type, field, init, dispose) type field;
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#include "componentlist.h"
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#undef X
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} componentdata_t;
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typedef struct {
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const char_t *enumName;
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const char_t *name;
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void (*init)(const entityid_t, const componentid_t);
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void (*dispose)(const entityid_t, const componentid_t);
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} componentdefinition_t;
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typedef enum {
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COMPONENT_TYPE_NULL,
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#define X(enumName, type, field, init, dispose) \
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COMPONENT_TYPE_##enumName,
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#include "componentlist.h"
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#undef X
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COMPONENT_TYPE_COUNT
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} componenttype_t;
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typedef struct {
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componenttype_t type;
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componentdata_t data;
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} component_t;
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extern componentdefinition_t COMPONENT_DEFINITIONS[];
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/**
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* Initializes a component of the given type for the entity with component ID.
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*
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* @param entityId The entity ID.
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* @param componentId The component ID.
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* @param type The type of the component to initialize.
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*/
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void componentInit(
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const entityid_t entityId,
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const componentid_t componentId,
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const componenttype_t type
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);
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/**
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* Gets the pointer to the data of a component for the entity with component ID.
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*
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* @param entityId The entity ID.
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* @param componentId The component ID.
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* @param type The type of the component to get, only used for assertion.
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* @return A pointer to the component data.
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*/
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void * componentGetData(
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const entityid_t entityId,
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const componentid_t componentId,
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const componenttype_t type
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);
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/**
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* Gets the index of a component for the entity with component ID.
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*
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* @param entityId The entity ID.
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* @param componentId The component ID.
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* @return The index of the component in the component array.
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*/
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componentindex_t componentGetIndex(
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const entityid_t entityId,
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const componentid_t componentId
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);
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/**
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* Gets the entity IDs of all entities with a component of the given type.
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*
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* @param type The type of the component to get entities for.
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* @param outEntities An array to write the entity IDs to, must be at least
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* ENTITY_COUNT_MAX in size.
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* @param outComponents An array to write the component IDs to.
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* @return The number of entity IDs written to outEntities.
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*/
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entityid_t componentGetEntitiesWithComponent(
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const componenttype_t type,
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entityid_t outEntities[ENTITY_COUNT_MAX],
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componentid_t outComponents[ENTITY_COUNT_MAX]
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);
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/**
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* Disposes of a component for the entity with component ID.
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*
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* @param entityId The entity ID.
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* @param componentId The component ID.
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*/
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void componentDispose(
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const entityid_t entityId,
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const componentid_t componentId
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); |