zig/mach
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

ecs: correctly update invalidated pointer post-allocation

Browse source 
Potentially fixes hexops/mach#1178

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2024-03-20 09:24:27 -07:00 • committed by Stephen Gutekanst
parent 3898995c4c
commit 0c3ae9a048
1 changed files with 10 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

10
src/ecs/entities.zig
View file

@ -315,6 +315,9 @@ pub fn Entities(comptime all_components: anytype) type {
const archetype_entry = try entities.archetypeOrPut(columns);
if (!archetype_entry.found_existing) {
// Update prev_archetype pointer, as it would now be invalidated due to the allocation
prev_archetype = &entities.archetypes.items[prev_archetype_idx];
archetype_entry.ptr.* = .{
.len = 0,
.capacity = 0,
@ -412,6 +415,9 @@ pub fn Entities(comptime all_components: anytype) type {
const archetype_entry = try entities.archetypeOrPut(columns);
if (!archetype_entry.found_existing) {
// Update prev_archetype pointer, as it would now be invalidated due to the allocation
prev_archetype = &entities.archetypes.items[prev_archetype_idx];
archetype_entry.ptr.* = .{
.len = 0,
.capacity = 0,
@ -492,6 +498,7 @@ pub fn Entities(comptime all_components: anytype) type {
var archetype = entities.archetypeByID(entity);
const ptr = entities.entities.get(entity).?;
return archetype.get(ptr.row_index, name_id, Component);
}
@ -548,6 +555,9 @@ pub fn Entities(comptime all_components: anytype) type {
const archetype_entry = try entities.archetypeOrPut(columns);
if (!archetype_entry.found_existing) {
// Update prev_archetype pointer, as it would now be invalidated due to the allocation
prev_archetype = &entities.archetypes.items[prev_archetype_idx];
archetype_entry.ptr.* = .{
.len = 0,
.capacity = 0,