Method reload_units

src/world/world.cpp:967–1024

}

void World::reload_units(const UnitResource *old_unit, const UnitResource *new_unit)
{
#if CROWN_CAN_RELOAD
	for (u32 i = 0; i < array::size(_unit_resources); ++i) {
		if (_unit_resources[i] == old_unit) {
			Vector3 pos = VECTOR3_ZERO;
			Quaternion rot = QUATERNION_IDENTITY;
			Vector3 scl = VECTOR3_ONE;
			TransformId ti = _scene_graph->instance(_units[i]);

			if (is_valid(ti)) {
				pos = _scene_graph->local_position(ti);
				rot = _scene_graph->local_rotation(ti);
				scl = _scene_graph->local_scale(ti);
			}

			// Collect units created when old_unit was spawned
			// and destroy all their components. Unit IDs will be reused.
			Array<UnitId> unit_lookup(default_scratch_allocator());
			collect_units(&unit_lookup, _scene_graph, _units[i]);

			for (u32 j = 0; j < array::size(unit_lookup); ++j)
				_unit_manager->trigger_destroy_callbacks(unit_lookup[j]);

			// Create or destroy IDs if new_unit has different number of units.
			u32 n = array::size(unit_lookup);
			for (u32 i = new_unit->num_units; i > n; --i) {
				UnitId u = _unit_manager->create();
				array::push_back(unit_lookup, u);
				array::push_back(_units, u);
				array::push_back(_unit_resources, (const UnitResource *)NULL);
			}
			for (u32 i = new_unit->num_units; i < n; ++i) {
				_unit_manager->destroy(array::back(unit_lookup));
				array::pop_back(unit_lookup);
			}
			CE_ENSURE(array::size(unit_lookup) == new_unit->num_units);

			create_components(*this
				, new_unit
				, array::begin(unit_lookup)
				, SpawnFlags::OVERRIDE_POSITION
				| SpawnFlags::OVERRIDE_ROTATION
				| SpawnFlags::OVERRIDE_SCALE
				, pos
				, rot
				, scl
				);
			_unit_resources[i] = new_unit;
		}
	}

	remove_dead_units();
#else
	CE_UNUSED_2(old_unit, new_unit);
	CE_NOOP();
#endif // if CROWN_CAN_RELOAD
}