removing components while iterating

[sh-dave]

What's the intended way of doing that?

var objs = new View<A, B>();
... initialize objs with something...

for (e in objs.entities) {
   objs.manager.components.remove(e, A);
}

This won't work for all entities, as entities without A will be overwritten immediately.

• say we have these entities [0, 1, 2, 3]; Length 4 in objs, that all match
• the first iteration will remove A from 0;
• objs.entities will now contain [3, 1, 2, 3] / Length 3;
• next iteration, remove A from 1
• objs.entities will now container[3, 2, 2, 3] / Length 2;
• iteration will stop now

A workaround i found is using View.entities.entities
This will properly remove A from every entity, but it seems hard to remember.

for (e in objs.entities.entities) {
   objs.manager.components.remove(e, A);
}

[sh-dave]

The workaround will also only work when you don't try to get components in the loop, or it will explode.

[PDeveloper]

Good catch! I'll have to be more clever about my custom iterator.

Another method of course is building up a list of entities that need A removed, and removing them afterwards, but yeah, I'll need to support this case.