public void ensures_same_deterministic_order_when_getting_entities_after_DestroyAllEntities() {
var pool = new Pool(1);
const int numEntities = 10;
for (int i = 0; i < numEntities; i++) {
pool.CreateEntity();
}
var order1 = new int[numEntities];
var entities1 = pool.GetEntities();
for (int i = 0; i < numEntities; i++) {
order1[i] = entities1[i].creationIndex;
}
pool.DestroyAllEntities();
pool.ResetCreationIndex();
for (int i = 0; i < numEntities; i++) {
pool.CreateEntity();
}
var order2 = new int[numEntities];
var entities2 = pool.GetEntities();
for (int i = 0; i < numEntities; i++) {
order2[i] = entities2[i].creationIndex;
}
for (int i = 0; i < numEntities; i++) {
var index1 = order1[i];
var index2 = order2[i];
Assert.AreEqual(index1, index2);
}
}
static void moveSystem(Pool pool) {
var entities = pool.GetEntities(Matcher.AllOf(Matcher.Move, Matcher.Position));
foreach (var entity in entities) {
var move = entity.move;
var pos = entity.position;
entity.ReplacePosition(pos.x, pos.y + move.speed);
}
}
static void poolExample()
{
// Total components is kindly generated for you by the code generator
var pool = new Pool(ComponentIds.TotalComponents);
var entity = pool.CreateEntity();
entity.isMovable = true;
// Returns all entities having MovableComponent and PositionComponent.
// Matchers are also generated for you.
var entities = pool.GetEntities(Matcher.AllOf(Matcher.Movable, Matcher.Position));
foreach (var e in entities) {
// do something
}
}