Function Structure_AI_PickNextToBuild

src/structure.c:1980–2040

* Find the next object to build. * @param s The structure in which we can build something. * @return The type (either UnitType or StructureType) of what we should build next. */

 * @return The type (either UnitType or StructureType) of what we should build next.
 */
uint16 Structure_AI_PickNextToBuild(Structure *s)
{
	PoolFindStruct find;
	uint16 buildable;
	uint16 type;
	House *h;
	int i;

	if (s == NULL) return 0xFFFF;

	h = House_Get_ByIndex(s->o.houseID);
	buildable = Structure_GetBuildable(s);

	if (s->o.type == STRUCTURE_CONSTRUCTION_YARD) {
		for (i = 0; i < 5; i++) {
			type = h->ai_structureRebuild[i][0];

			if (type == 0) continue;
			if ((buildable & (1 << type)) == 0) continue;

			return type;
		}

		return 0xFFFF;
	}

	if (s->o.type == STRUCTURE_HIGH_TECH) {
		find.houseID = s->o.houseID;
		find.index   = 0xFFFF;
		find.type    = UNIT_CARRYALL;

		while (true) {
			Unit *u;

			u = Unit_Find(&find);
			if (u == NULL) break;

			buildable &= ~FLAG_UNIT_CARRYALL;
		}
	}

	if (s->o.type == STRUCTURE_HEAVY_VEHICLE) {
		buildable &= ~FLAG_UNIT_HARVESTER;
		buildable &= ~FLAG_UNIT_MCV;
	}

	type = 0xFFFF;
	for (i = 0; i < UNIT_MAX; i++) {
		if ((buildable & (1 << i)) == 0) continue;

		if ((Tools_Random_256() % 4) == 0) type = i;

		if (type != 0xFFFF) {
			if (g_table_unitInfo[i].o.priorityBuild <= g_table_unitInfo[type].o.priorityBuild) continue;
		}

		type = i;
	}