Function Unit_IsTileOccupied

src/unit.c:1869–1894

* Check if the position the unit is on is already occupied. * * @param unit The Unit to operate on. * @return True if and only if the position of the unit is already occupied. */

 * @return True if and only if the position of the unit is already occupied.
 */
bool Unit_IsTileOccupied(Unit *unit)
{
	const UnitInfo *ui;
	uint16 packed;
	Unit *unit2;
	uint16 speed;

	if (unit == NULL) return true;

	ui = &g_table_unitInfo[unit->o.type];
	packed = Tile_PackTile(unit->o.position);

	speed = g_table_landscapeInfo[Map_GetLandscapeType(packed)].movementSpeed[ui->movementType];
	if (speed == 0) return true;

	if (unit->o.type == UNIT_SANDWORM || ui->movementType == MOVEMENT_WINGER) return false;

	unit2 = Unit_Get_ByPackedTile(packed);
	if (unit2 != NULL && unit2 != unit) {
		if (House_AreAllied(Unit_GetHouseID(unit2), Unit_GetHouseID(unit))) return true;
		if (ui->movementType != MOVEMENT_TRACKED) return true;
		if (g_table_unitInfo[unit2->o.type].movementType != MOVEMENT_FOOT) return true;
	}

	return (Structure_Get_ByPackedTile(packed) != NULL);
}

/**
 * Set the speed of a Unit.