Function Unit_FindBestTargetStructure

src/unit.c:2275–2324

* Gets the best target structure for the given unit. * * @param unit The Unit to get the best target for. * @param mode How to determine the best target. * @return The best target or NULL if none found. */

 * @return The best target or NULL if none found.
 */
static Structure *Unit_FindBestTargetStructure(Unit *unit, uint16 mode)
{
	Structure *best = NULL;
	uint16 bestPriority = 0;
	tile32 position;
	uint16 distance;
	PoolFindStruct find;

	if (unit == NULL) return NULL;

	position = Tools_Index_GetTile(unit->originEncoded);
	distance = g_table_unitInfo[unit->o.type].fireDistance << 8;

	find.houseID = HOUSE_INVALID;
	find.index   = 0xFFFF;
	find.type    = 0xFFFF;

	while (true) {
		Structure *s;
		tile32 curPosition;
		uint16 priority;

		s = Structure_Find(&find);
		if (s == NULL) break;
		if (s->o.type == STRUCTURE_SLAB_1x1 || s->o.type == STRUCTURE_SLAB_2x2 || s->o.type == STRUCTURE_WALL) continue;

		curPosition.x = s->o.position.x + g_table_structure_layoutTileDiff[g_table_structureInfo[s->o.type].layout].x;
		curPosition.y = s->o.position.y + g_table_structure_layoutTileDiff[g_table_structureInfo[s->o.type].layout].y;

		if (mode != 0 && mode != 4) {
			if (mode == 1) {
				if (Tile_GetDistance(unit->o.position, curPosition) > distance) continue;
			} else {
				if (mode != 2) continue;
				if (Tile_GetDistance(position, curPosition) > distance * 2) continue;
			}
		}

		priority = Unit_GetTargetStructurePriority(unit, s);

		if (priority >= bestPriority) {
			best = s;
			bestPriority = priority;
		}
	}

	if (bestPriority == 0) return NULL;

	return best;
}

/**
 * Get the score of entering this tile from a direction.