Method create_instances

src/world/scene_graph.cpp:114–160

}

void SceneGraph::create_instances(const void *components_data
	, u32 num
	, const UnitId *unit_lookup
	, const u32 *unit_index
	, const u32 *unit_parents
	, u32 spawn_flags
	, const Vector3 &pos
	, const Quaternion &rot
	, const Vector3 &scl
	)
{
	const TransformDesc *transforms = (TransformDesc *)components_data;

	for (u32 i = 0; i < num; ++i) {
		UnitId unit = unit_lookup[unit_index[i]];
		CE_ASSERT(!hash_map::has(_map, unit), "Unit already has a transform component");

		if (_data.capacity == 0 || _data.capacity - 1 == _data.size)
			grow();

		const u32 last = _data.size;

		Matrix4x4 pose;
		set_identity(pose);
		set_translation(pose, spawn_flags & SpawnFlags::OVERRIDE_POSITION ? pos : transforms[i].position);
		set_rotation(pose, spawn_flags & SpawnFlags::OVERRIDE_ROTATION ? rot : transforms[i].rotation);
		set_scale(pose, spawn_flags & SpawnFlags::OVERRIDE_SCALE ? scl : transforms[i].scale);

		_data.unit[last]           = unit;
		_data.world[last]          = pose;
		_data.local[last]          = pose;
		_data.parent[last].i       = UINT32_MAX;
		_data.first_child[last].i  = UINT32_MAX;
		_data.next_sibling[last].i = UINT32_MAX;
		_data.prev_sibling[last].i = UINT32_MAX;
		_data.changed[last]        = false;

		++_data.size;

		hash_map::set(_map, unit, last);

		if (unit_parents[unit_index[i]] != UINT32_MAX) {
			TransformId parent_ti = instance(unit_lookup[unit_parents[unit_index[i]]]);
			link(parent_ti, make_instance(last), transforms[i].position, transforms[i].rotation, transforms[i].scale);
		}
	}
}

TransformId SceneGraph::create(UnitId unit, const Vector3 &pos, const Quaternion &rot, const Vector3 &scale)
{