121 lines
3.8 KiB
C
121 lines
3.8 KiB
C
/*
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subpool.c
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ECS subpool management
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Copyright (C) 2022 Bill Currke
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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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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "QF/sys.h"
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#include "QF/ecs.h"
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VISIBLE uint32_t
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ECS_NewSubpoolRange (ecs_registry_t *registry, uint32_t component)
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{
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ecs_subpool_t *subpool = ®istry->subpools[component];
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uint32_t id;
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uint32_t num_ranges = subpool->num_ranges - subpool->available;
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if (subpool->available) {
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subpool->available--;
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uint32_t next = subpool->next;
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id = next | Ent_Generation (subpool->rangeids[next]);
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subpool->next = Ent_Index (subpool->rangeids[next]);
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subpool->rangeids[next] = id;
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subpool->sorted[next] = num_ranges;
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} else {
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if (subpool->num_ranges == Ent_Index (nullent)) {
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Sys_Error ("ECS_NewEntity: out of rangeids");
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}
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if (subpool->num_ranges == subpool->max_ranges) {
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subpool->max_ranges += RANGE_GROW;
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size_t idsize = subpool->max_ranges * sizeof (uint32_t);
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size_t rsize = subpool->max_ranges * sizeof (ecs_range_t);
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subpool->rangeids = realloc (subpool->rangeids, idsize);
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subpool->sorted = realloc (subpool->sorted, idsize);
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subpool->ranges = realloc (subpool->ranges, rsize);
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}
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id = subpool->num_ranges++;
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// id starts out with generation 0
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subpool->rangeids[id] = id;
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subpool->sorted[id] = num_ranges;
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}
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uint32_t end = 0;
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if (num_ranges) {
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end = subpool->ranges[num_ranges - 1];
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}
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subpool->ranges[subpool->sorted[Ent_Index (id)]] = end;
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return id;
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}
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VISIBLE void
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ECS_DelSubpoolRange (ecs_registry_t *registry, uint32_t component, uint32_t id)
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{
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ecs_subpool_t *subpool = ®istry->subpools[component];
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uint32_t next = subpool->next | Ent_NextGen (Ent_Generation (id));
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uint32_t ind = Ent_Index (id);
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uint32_t count = subpool->num_ranges - subpool->available;
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uint32_t range = subpool->sorted[ind];
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subpool->rangeids[ind] = next;
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subpool->next = ind;
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subpool->available++;
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memmove (subpool->ranges + range, subpool->ranges + range + 1,
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(subpool->num_ranges - 1 - range) * sizeof (ecs_range_t));
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for (uint32_t i = 0; i < count; i++) {
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if (subpool->sorted[i] > range) {
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subpool->sorted[i]--;
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}
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}
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}
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VISIBLE void
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ECS_MoveSubpoolLast (ecs_registry_t *registry, uint32_t component, uint32_t id)
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{
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ecs_pool_t *pool = ®istry->comp_pools[component];
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ecs_subpool_t *subpool = ®istry->subpools[component];
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uint32_t ind = Ent_Index (id);
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component_t *c = ®istry->components.a[component];
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uint32_t range = subpool->sorted[ind];
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uint32_t num_ranges = subpool->num_ranges - subpool->available;
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uint32_t last_range = num_ranges - 1;
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uint32_t start = range ? subpool->ranges[range - 1] : 0;
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uint32_t end = subpool->ranges[range];
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uint32_t last = subpool->ranges[last_range];
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uint32_t count = end - start;
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uint32_t srcIndex = start;
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uint32_t dstIndex = last - count;
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for (uint32_t i = range; i < last_range; i++) {
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subpool->ranges[i] = subpool->ranges[i + 1] - count;
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}
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for (uint32_t i = 0; i < num_ranges; i++) {
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if (subpool->sorted[i] > range) {
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subpool->sorted[i]--;
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}
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}
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subpool->sorted[ind] = last_range;
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Component_RotateElements (c, pool->data, dstIndex, srcIndex, count);
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}
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