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Subpools are for grouping components by some criterion. Any component that has a rangeid callback will be grouped with other components that return the same render id. Note that the ordering of components within a group will be affected by adding a component into a group that comes before that group (or removing a component). Component pools can have multiple groups, added and removed dynamically, but removing a group should (currently) be done only when empty.
154 lines
4.3 KiB
C
154 lines
4.3 KiB
C
/*
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component.h
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ECS Component management
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Copyright (C) 2022 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2022/10/07
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifndef __QF_ecs_component_h
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#define __QF_ecs_component_h
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#include <string.h>
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#include <stdlib.h>
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#include "QF/qtypes.h"
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#include "QF/progs.h"//FIXME for PR_RESMAP
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/** \defgroup ecs_component Entity Component System components
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\ingroup utils
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*/
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///@{
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struct ecs_registry_s;
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typedef struct component_s {
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size_t size;
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void (*create) (void *);
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void (*destroy) (void *);
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// comp is the registry component id (base + system component id)
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uint32_t (*rangeid) (struct ecs_registry_s *reg, uint32_t ent,
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uint32_t comp);
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const char *name;
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} component_t;
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#define COMPINLINE GNU89INLINE inline
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COMPINLINE void Component_ResizeArray (const component_t *component,
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void **array, uint32_t count);
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COMPINLINE void *Component_MoveElements (const component_t *component,
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void *array, uint32_t dstIndex,
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uint32_t srcIndex, uint32_t count);
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COMPINLINE void Component_SwapElements (const component_t *component,
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void *a, void *b);
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COMPINLINE void *Component_CopyElements (const component_t *component,
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void *dstArray, uint32_t dstIndex,
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const void *srcArray,
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uint32_t srcIndex,
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uint32_t count);
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COMPINLINE void *Component_CreateElements (const component_t *component,
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void *array,
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uint32_t index, uint32_t count);
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COMPINLINE void Component_DestroyElements (const component_t *component,
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void *array,
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uint32_t index, uint32_t count);
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#undef COMPINLINE
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#ifndef IMPLEMENT_ECS_COMPONENT_Funcs
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#define COMPINLINE GNU89INLINE inline
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#else
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#define COMPINLINE VISIBLE
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#endif
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COMPINLINE void
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Component_ResizeArray (const component_t *component,
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void **array, uint32_t count)
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{
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*array = realloc (*array, count * component->size);
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}
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COMPINLINE void *
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Component_MoveElements (const component_t *component,
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void *array, uint32_t dstIndex, uint32_t srcIndex,
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uint32_t count)
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{
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__auto_type dst = (byte *) array + dstIndex * component->size;
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__auto_type src = (byte *) array + srcIndex * component->size;
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return memmove (dst, src, count * component->size);
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}
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COMPINLINE void
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Component_SwapElements (const component_t *component, void *a, void *b)
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{
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size_t size = component->size;
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byte tmp[size];
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memcpy (tmp, a, size);
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memcpy (a, b, size);
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memcpy (b, tmp, size);
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}
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COMPINLINE void *
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Component_CopyElements (const component_t *component,
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void *dstArray, uint32_t dstIndex,
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const void *srcArray, uint32_t srcIndex,
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uint32_t count)
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{
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__auto_type dst = (byte *) dstArray + dstIndex * component->size;
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__auto_type src = (byte *) srcArray + srcIndex * component->size;
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return memcpy (dst, src, count * component->size);
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}
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COMPINLINE void *
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Component_CreateElements (const component_t *component, void *array,
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uint32_t index, uint32_t count)
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{
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if (component->create) {
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for (uint32_t i = index; count-- > 0; i++) {
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__auto_type dst = (byte *) array + i * component->size;
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component->create (dst);
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}
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} else {
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__auto_type dst = (byte *) array + index * component->size;
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memset (dst, 0, count * component->size);
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}
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return (byte *) array + index * component->size;
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}
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COMPINLINE void
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Component_DestroyElements (const component_t *component, void *array,
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uint32_t index, uint32_t count)
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{
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if (component->destroy) {
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for (uint32_t i = index; count-- > 0; i++) {
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__auto_type dst = (byte *) array + i * component->size;
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component->destroy (dst);
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}
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}
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}
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#undef COMPINLINE
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///@}
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#endif//__QF_ecs_component_h
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