unit.cpp

// START A3HEADER
//
// This source file is part of the Atlantis PBM game program.
// Copyright (C) 1995-1999 Geoff Dunbar
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program, in the file license.txt. If not, write
// to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
//
// See the Atlantis Project web page for details:
// http://www.prankster.com/project
//
// END A3HEADER

#include "unit.h"
#include "gamedata.h"
#include <stack>

#include "external/nlohmann/json.hpp"
using json = nlohmann::json;

using namespace std;

UnitId::UnitId()
{
}

UnitId::~UnitId()
{
}

string UnitId::Print()
{
	if (unitnum) {
		return to_string(unitnum);
	} else {
		if (faction) {
			return string("faction ") + to_string(faction) + " new " + to_string(alias);
		} else {
			return string("new ") + to_string(alias);
		}
	}
}

Unit::Unit()
{
	name = 0;
	describe = 0;
	num = 0;
	type = U_NORMAL;
	faction = 0;
	formfaction = 0;
	alias = 0;
	guard = GUARD_NONE;
	reveal = REVEAL_NONE;
	flags = FLAG_NOCROSS_WATER;
	movepoints = Globals->PHASED_MOVE_OFFSET % Globals->MAX_SPEED;
	combat = -1;
	for (int i = 0; i < MAX_READY; i++) {
		readyWeapon[i] = -1;
		readyArmor[i] = -1;
	}
	readyItem = -1;
	object = 0;
	attackorders = nullptr;
	evictorders = nullptr;
	stealthorders = nullptr;
	monthorders = nullptr;
	castorders = nullptr;
	sacrificeorders = nullptr;
	annihilateorders = nullptr;
	teleportorders = nullptr;
	joinorders = nullptr;
	inTurnBlock = 0;
	presentTaxing = 0;
	presentMonthOrders = nullptr;
	former = nullptr;
	format = 0;
	free = 0;
	practiced = 0;
	moved = 0;
	phase = -1;
	savedmovement = 0;
	savedmovedir = -1;
	ClearOrders();
	raised = 0;
	initial_region = nullptr;
}

Unit::Unit(int seq, Faction *f, int a)
{
	num = seq;
	type = U_NORMAL;
	name = new AString;
	describe = 0;
	*name = AString("Unit (") + num + ")";
	faction = f;
	formfaction = f;
	alias = a;
	guard = 0;
	reveal = REVEAL_NONE;
	flags = FLAG_NOCROSS_WATER;
	movepoints = Globals->PHASED_MOVE_OFFSET % Globals->MAX_SPEED;
	combat = -1;
	for (int i = 0; i < MAX_READY; i++) {
		readyWeapon[i] = -1;
		readyArmor[i] = -1;
	}
	readyItem = -1;
	object = 0;
	attackorders = nullptr;
	evictorders = nullptr;
	stealthorders = nullptr;
	monthorders = nullptr;
	castorders = nullptr;
	teleportorders = nullptr;
	joinorders = nullptr;
	sacrificeorders = nullptr;
	annihilateorders = nullptr;
	inTurnBlock = 0;
	presentTaxing = 0;
	presentMonthOrders = nullptr;
	former = nullptr;
	format = 0;
	free = 0;
	practiced = 0;
	moved = 0;
	phase = -1;
	savedmovement = 0;
	savedmovedir = -1;
	ClearOrders();
	raised = 0;
	initial_region = nullptr;
}

Unit::~Unit()
{
	if (name) delete name;
	if (describe) delete describe;
}

void Unit::SetMonFlags()
{
	guard = GUARD_AVOID;
	SetFlag(FLAG_HOLDING, 1);
}

void Unit::MakeWMon(char const *monname, int mon, int num)
{
	AString *temp = new AString(monname);
	SetName(temp);

	type = U_WMON;
	items.SetNum(mon, num);
	SetMonFlags();
}

void Unit::Writeout(ostream& f)
{
	set<string>::iterator it;

	f << name->const_str() << '\n';
	f << (describe ? describe->const_str() : "none") << '\n';
	f << num << '\n';
	f << type << '\n';
	f << faction->num << '\n';
	f << guard << '\n';
	f << reveal << '\n';
	f << free << '\n';
	f << (readyItem != -1 ? ItemDefs[readyItem].abr : "NO_ITEM") << '\n';

	for (int i = 0; i < MAX_READY; ++i) {
		f << (readyWeapon[i] != -1 ? ItemDefs[readyWeapon[i]].abr : "NO_ITEM") << '\n';
		f << (readyArmor[i] != -1 ? ItemDefs[readyArmor[i]].abr : "NO_ITEM") << '\n';
	}

	f << flags << '\n';
	items.Writeout(f);
	skills.Writeout(f);
	f << (combat != -1 ? SkillDefs[combat].abbr : "NO_SKILL") << '\n';
	f << savedmovement << '\n';
	f << savedmovedir << '\n';
	f << visited.size() << '\n';
	for (it = visited.begin(); it != visited.end();	it++) {
		f << it->c_str() << '\n';
	}
}

void Unit::Readin(istream& f, AList *facs)
{
	AString temp;
	f >> ws >> temp;
	name = temp.stripnumber();

	f >> ws >> temp;
	describe = temp.getlegal();
	if (*describe == "none") {
		delete describe;
		describe = 0;
	}

	f >> num;
	SetName(new AString(*name));
	f >> type;

	int i;
	f >> i;

	faction = GetFaction(facs, i);
	f >> guard;
	if (guard == GUARD_ADVANCE) guard = GUARD_NONE;
	if (guard == GUARD_SET) guard = GUARD_GUARD;

	f >> reveal;

	/* Handle the new 'ready item', ready weapons/armor, and free */
	free = 0;
	readyItem = -1;
	for (i = 0; i < MAX_READY; i++) {
		readyWeapon[i] = -1;
		readyArmor[i] = -1;
	}

	f >> free;

	f >> ws >> temp;
	readyItem = LookupItem(&temp);
	for (i = 0; i < MAX_READY; i++) {
		f >> ws >> temp;
		readyWeapon[i] = LookupItem(&temp);
		f >> ws >> temp;
		readyArmor[i] = LookupItem(&temp);
	}

	f >> flags;

	items.Readin(f);
	skills.Readin(f);

	f >> ws >> temp;
	combat = LookupSkill(&temp);

	f >> savedmovement;
	f >> savedmovedir;

	f >> i;
	while (i-- > 0) {
		string s;
		getline(f >> ws, s);
		visited.insert(s);
	}
}

AString Unit::MageReport()
{
	AString temp;

	if (combat != -1) {
		temp = AString(". Combat spell: ") + SkillStrs(combat);
	}
	return temp;
}

AString Unit::ReadyItem()
{
	AString temp, weaponstr, armorstr, battlestr;
	int weapon, armor, item, i, ready;

	item = 0;
	for (i = 0; i < MAX_READY; ++i) {
		ready = readyWeapon[i];
		if (ready != -1) {
			if (item) weaponstr += ", ";
			weaponstr += ItemString(ready, 1);
			++item;
		}
	}
	if (item > 0)
		weaponstr = AString("Ready weapon") + (item == 1?"":"s") + ": " +
			weaponstr;
	weapon = item;

	item = 0;
	for (i = 0; i < MAX_READY; ++i) {
		ready = readyArmor[i];
		if (ready != -1) {
			if (item) armorstr += ", ";
			armorstr += ItemString(ready, 1);
			++item;
		}
	}
	if (item > 0)
		armorstr = AString("Ready armor: ") + armorstr;
	armor = item;

	if (readyItem != -1) {
		battlestr = AString("Ready item: ") + ItemString(readyItem, 1);
		item = 1;
	} else
		item = 0;

	if (weapon || armor || item) {
		temp += AString(". ");
		if (weapon) temp += weaponstr;
		if (armor) {
			if (weapon) temp += ". ";
			temp += armorstr;
		}
		if (item) {
			if (armor || weapon) temp += ". ";
			temp += battlestr;
		}
	}
	return temp;
}

AString Unit::StudyableSkills()
{
	AString temp;
	int j=0;

	for (int i=0; i<NSKILLS; i++) {
		if (SkillDefs[i].depends[0].skill != NULL) {
			if (CanStudy(i)) {
				if (j) {
					temp += ", ";
				} else {
					temp += ". Can Study: ";
					j=1;
				}
				temp += SkillStrs(i);
			}
		}
	}
	return temp;
}

AString Unit::GetName(int obs)
{
	AString ret = *name;
	int stealth = GetAttribute("stealth");
	if (reveal == REVEAL_FACTION || obs > stealth) {
		ret += ", ";
		ret += *faction->name;
	}
	return ret;
}

int Unit::CanGetSpoil(Item& i)
{
	int weight, load, capacity;

	if (ItemDefs[i.type].type & IT_SHIP) {
		// Don't pick up an incomplete ship if we already have one
		if (items.GetNum(i.type) > 0) return 0;
	}
	weight = ItemDefs[i.type].weight;
	if (!weight) return 1; // any unit can carry 0 weight spoils

	if (flags & FLAG_NOSPOILS)
		return 0;

	load = items.Weight();

	if (flags & FLAG_FLYSPOILS) {
		capacity = ItemDefs[i.type].fly;
		if (FlyingCapacity() + capacity < load + weight)
			return 0;
	}

	if (flags & FLAG_RIDESPOILS) {
		capacity = ItemDefs[i.type].ride;
		if (RidingCapacity() + capacity < load + weight)
			return 0;
	}

	if (flags & FLAG_WALKSPOILS) {
		capacity = ItemDefs[i.type].walk;
		if (ItemDefs[i.type].hitchItem) {
			if (items.GetNum(ItemDefs[i.type].hitchItem) > items.GetNum(i.type))
				capacity = ItemDefs[i.type].hitchwalk;
		}
		if (WalkingCapacity() + capacity < load + weight)
			return 0;
	}

	if (flags & FLAG_SWIMSPOILS) {
		capacity = ItemDefs[i.type].swim;
		if (ItemDefs[i.type].type & IT_SHIP)
			capacity = 0;
		if (SwimmingCapacity() + capacity < load + weight)
			return 0;
	}

	if ((flags & FLAG_SAILSPOILS) && object && object->IsFleet()) {
		load = object->FleetLoad();
		if (object->FleetCapacity() < load + weight)
			return 0;
	}

	return 1; // all spoils
}

AString Unit::SpoilsReport() {
	AString temp;
	if (GetFlag(FLAG_NOSPOILS)) temp = ", weightless battle spoils";
	else if (GetFlag(FLAG_FLYSPOILS)) temp = ", flying battle spoils";
	else if (GetFlag(FLAG_WALKSPOILS)) temp = ", walking battle spoils";
	else if (GetFlag(FLAG_RIDESPOILS)) temp = ", riding battle spoils";
	else if (GetFlag(FLAG_SAILSPOILS)) temp = ", sailing battle spoils";
	else if (GetFlag(FLAG_SWIMSPOILS)) temp = ", swimming battle spoils";
	return temp;
}

// TODO: Move this somewhere more global.  For now it's only used here.
static inline void trim(string& s) {
    s.erase(s.begin(), find_if_not(s.begin(), s.end(), [](char c){ return isspace(c); }));
    s.erase(find_if_not(s.rbegin(), s.rend(), [](char c){ return isspace(c); }).base(), s.end());
}

json Unit::write_json_orders()
{
	stack<json> parent_stack;
	json container = json::array();

	bool has_continuing_month_order = false;

	for(auto order: oldorders) {
		AString temp = order;
		temp.getat();
		AString *token = temp.gettoken();
		int order_val = token ? Parse1Order(token) : NORDERS;
		if (token) delete token;

		set<int> month_orders = { O_MOVE, O_SAIL, O_TEACH, O_STUDY, O_BUILD, O_PRODUCE, O_ENTERTAIN, O_WORK };
		if (Globals->TAX_PILLAGE_MONTH_LONG) {
			month_orders.emplace(O_TAX);
			month_orders.emplace(O_PILLAGE);
		}

		if (month_orders.contains(order_val)) has_continuing_month_order = true;

		// Okay, if we are at the end of a form/turn block, we need to move back up the stack.
		if (order_val == O_ENDTURN || order_val == O_ENDFORM) {
			json parent = parent_stack.top();
			parent_stack.pop();
			// Get the last element of the parent array which is what contains the nested orders
			parent.back()["nested"] = container;
			container = parent;
		}
		trim(order);
		container.push_back( { { "order", order } } );

		// Okay, if the order we currently have is the start of a form/turn block, we need to push it on the stack.
		if (order_val == O_TURN || order_val == O_FORM) {
			parent_stack.push(container);
			container = json::array();
		}
	}

	// now write out any turn orders that were part of previous turn blocks.
	// If we had a continuing month order, or a previous turn block, the turn block will be deferred (and so wrapped).
	// If we had no month long order, the first turn block will not be wrapped (and so become the upcoming turn orders)
	// and then re-added to the end of the list if it was a repeating turn order.  wrapping here uses the same stack as
	// above in the same way.
	bool wrap_turn_block = has_continuing_month_order;
	if (turnorders.size()) {
		for(auto tOrder: turnorders) {
			if (wrap_turn_block) {
				container.push_back( { { "order", (tOrder->repeating ? "@TURN" : "TURN") } } );
				parent_stack.push(container);
				container = json::array();
			}
			for(auto order: tOrder->turnOrders) {
				AString temp = order;
				temp.getat();
				AString *token = temp.gettoken();
				int order_val = token ? Parse1Order(token) : NORDERS;
				if (token) delete token;
				if (order_val == O_ENDTURN || order_val == O_ENDFORM) {
					json parent = parent_stack.top();
					parent_stack.pop();
					// Get the last element of the parent array which is what contains the nested orders
					parent.back()["nested"] = container;
					container = parent;
				}
				trim(order);
				container.push_back( { { "order", order } } );
				if (order_val == O_TURN || order_val == O_FORM) {
					parent_stack.push(container);
					container = json::array();
				}
			}
			if (wrap_turn_block) {
				json parent = parent_stack.top();
				parent_stack.pop();
				// Get the last element of the parent array which is what contains the nested orders
				parent.back()["nested"] = container;
				container = parent;
				container.push_back( { { "order", "ENDTURN" } } );
			}
			wrap_turn_block = true; // All future turn blocks get wrapped.
		}
		// Now, move the container back to the end of the list if it was a repeating turn order and it got unwrapped
		std::shared_ptr<TurnOrder> tOrder = turnorders.front();
		if (tOrder->repeating && !has_continuing_month_order) {
			container.push_back( { { "order", "@TURN" } } );
			parent_stack.push(container);
			container = json::array();
			for(auto order: tOrder->turnOrders) {
				AString temp = order;
				temp.getat();
				AString *token = temp.gettoken();
				int order_val = token ? Parse1Order(token) : NORDERS;
				if (token) delete token;
				if (order_val == O_ENDTURN || order_val == O_ENDFORM) {
					json parent = parent_stack.top();
					parent_stack.pop();
					// Get the last element of the parent array which is what contains the nested orders
					parent.back()["nested"] = container;
					container = parent;
				}
				trim(order);
				container.push_back( { { "order", order } } );
				if (order_val == O_TURN || order_val == O_FORM) {
					parent_stack.push(container);
					container = json::array();
				}
			}
			json parent = parent_stack.top();
			parent_stack.pop();
			// Get the last element of the parent array which is what contains the nested orders
			parent.back()["nested"] = container;
			container = parent;
			container.push_back( { { "order", "ENDTURN" } } );
		}
	}
	return container;
}

json Unit::build_json_descriptor() {
	json j = json::object();
	string s = name->const_str();
	j["name"] = s.substr(0, s.find(" (")); // remove the unit number from the name for json output
	j["number"] = num;
	return j;
}

void Unit::build_json_report(json& j, int obs, int truesight, int detfac, int autosee, int attitude, int showattitudes)
{
	int stealth = GetAttribute("stealth");
	bool my_unit = (obs == -1);
	bool see_faction = (my_unit || (detfac != 0));
	bool see_illusion = (my_unit || (GetSkill(S_ILLUSION) <= truesight));

	if(!my_unit) {
		// exit early if we cannot see the unit
		if ((obs < stealth) && (reveal == REVEAL_NONE) && (guard != GUARD_GUARD) && !autosee) return;
		// ensure we can see the faction if able.
		if (obs > stealth || reveal == REVEAL_FACTION) see_faction = true;
	}

	j = build_json_descriptor();

	if (!my_unit) {
		string att = AttitudeStrs[attitude];
		transform(att.begin(), att.end(), att.begin(), ::tolower);
		j["attitude"] = att;
	} else {
		j["own_unit"] = true;
	}

	if (describe) j["description"] = describe->const_str();

	j["flags"]["guard"] = (guard == GUARD_GUARD);

	if (see_faction) {
		string faction_name = faction->name->const_str();
		j["faction"] = {
			{ "name", faction_name.substr(0, faction_name.find(" (")) }, // Remove the faction number
			{ "number", faction->num }
		};
		j["flags"]["avoid"] = (guard == GUARD_AVOID);
		if (GetFlag(FLAG_BEHIND)) j["flags"]["behind"] = true;
	}

	if (my_unit) {
		if (reveal == REVEAL_UNIT) j["flags"]["reveal"] = "unit";
		if (reveal == REVEAL_FACTION) j["flags"]["reveal"] = "faction";
		j["flags"]["holding"] = (GetFlag(FLAG_HOLDING) ? true : false);
		j["flags"]["taxing"] = (GetFlag(FLAG_AUTOTAX) ? true : false);
		j["flags"]["no_aid"] = (GetFlag(FLAG_NOAID) ? true : false);
		j["flags"]["sharing"] = (GetFlag(FLAG_SHARING) ? true : false);
		if (GetFlag(FLAG_CONSUMING_UNIT)) j["flags"]["consume"] = "unit";
		if (GetFlag(FLAG_CONSUMING_FACTION)) j["flags"]["consume"] = "faction";
		j["flags"]["no_cross_water"] = GetFlag(FLAG_NOCROSS_WATER) ? true : false;

		// Only one of these is allowed to be true at a time.
		if (GetFlag(FLAG_NOSPOILS)) j["flags"]["spoils"] = "weightless";
		else if (GetFlag(FLAG_FLYSPOILS)) j["flags"]["spoils"] = "flying";
		else if (GetFlag(FLAG_WALKSPOILS)) j["flags"]["spoils"] = "walking";
		else if (GetFlag(FLAG_RIDESPOILS)) j["flags"]["spoils"] = "riding";
		else if (GetFlag(FLAG_SAILSPOILS)) j["flags"]["spoils"] = "sailing";
		else if (GetFlag(FLAG_SWIMSPOILS)) j["flags"]["spoils"] = "swimming";
		else j["flags"]["spoils"] = "all";

		j["weight"] = items.Weight();
		j["capacity"]["flying"] = FlyingCapacity();
		j["capacity"]["riding"] = RidingCapacity();
		j["capacity"]["walking"] = WalkingCapacity();
		j["capacity"]["swimming"] = SwimmingCapacity();

		j["skills"]["known"] = json::array();
		int men = GetMen();
		for(auto s: skills) {
			if (s->days == 0) continue;
			int man_days = s->days/men;
			json skill = json{
				{ "name", SkillDefs[s->type].name },
				{ "tag", SkillDefs[s->type].abbr },
				{ "level", GetLevelByDays(s->days/men) },
				{ "skill_days", s->days/men },
			};
			if (Globals->REQUIRED_EXPERIENCE) {
				int exp = s->exp/men;
				int rate = StudyRateAdjustment(man_days, exp);
				skill["study_rate"] = rate;
			}
			j["skills"]["known"].push_back(skill);
		}
		for (auto i = 0; i < NSKILLS; i++) {
			if (SkillDefs[i].depends[0].skill != NULL) {
				if (CanStudy(i)) {
					j["skills"]["can_study"].push_back({
						{ "name", SkillDefs[i].name },
						{ "tag", SkillDefs[i].abbr }
					});
				}
			}
		}

		if ((type == U_MAGE || type == U_GUARDMAGE) && combat != -1) {
			j["combat_spell"] = { { "name", SkillDefs[combat].name }, { "tag", SkillDefs[combat].abbr } };
		}

		for (auto i = 0; i < MAX_READY; ++i) {
			if (readyWeapon[i] != -1) {
				// TODO: go back and clean this to report items better.
				j["readied"]["weapons"].push_back({
					{ "name", ItemDefs[readyWeapon[i]].name },
					{ "tag", ItemDefs[readyWeapon[i]].abr },
					{ "plural", ItemDefs[readyWeapon[i]].names }
				});
			}
		}

		for (auto i = 0; i < MAX_READY; ++i) {
			if (readyArmor[i] != -1) {
				j["readied"]["armor"].push_back({
					{ "name", ItemDefs[readyArmor[i]].name },
					{ "tag", ItemDefs[readyArmor[i]].abr },
					{ "plural", ItemDefs[readyArmor[i]].names }
				});
			}
		}

		if (readyItem != -1) {
			j["readied"]["item"] = { { "name", ItemDefs[readyItem].name }, { "tag", ItemDefs[readyItem].abr } };
		}

		// this is just a list of strings, so we can just copy it over
		j["visited"] = visited;

		// For the JSON report, the best location for order information is on the unit itself.
		j["orders"] = write_json_orders();

	}

	j["items"] = json::array();

	// Clear any marks on the item list since we want to report items in a specific order.
	// Not sure this is necessary with json output, but we are going to hold it for now so that the array in json
	// is in the same order the items would be listed in the normal report.
	for(auto& i: items) { i.checked = 0; }

	// now, report the items in the specific order (men, monsters, weapons, mounts, wagons, other, silver)
	// items will be marked when they are reported to make sure they don't get reported twice if they fit
	// multiple categories.
	for (auto output_phase = 0; output_phase < 7; output_phase++) {
		for(auto& item: items) {
			if (item.checked) continue;

			ItemType def = ItemDefs[item.type];
			bool combat_item = (def.type & (IT_WEAPON | IT_BATTLE | IT_ARMOR | IT_MAGIC));
			bool item_reported_in_other_phase = (
				(def.type & (IT_WEAPON | IT_BATTLE | IT_ARMOR | IT_MAGIC | IT_MOUNT | IT_MAN | IT_MONSTER)) ||
				(item.type == I_WAGON) || (item.type == I_MWAGON) || (item.type == I_SILVER)
			);

			if (output_phase == 0 && !(def.type & IT_MAN)) continue;
			if (output_phase == 1 && !(def.type & IT_MONSTER)) continue;
			if (output_phase == 2 && !combat_item) continue;
			if (output_phase == 3 && !(def.type & IT_MOUNT)) continue;
			if (output_phase == 4 && !((item.type == I_WAGON) || (item.type == I_MWAGON))) continue;
			if (output_phase == 5 && item_reported_in_other_phase) continue;
			if (output_phase == 6 && !(item.type == I_SILVER)) continue;

			item.checked = 1;
			if (my_unit || (def.weight != 0)) {
				json item_obj = json{ { "name", def.name }, { "tag", def.abr }, { "plural", def.names } };
				if (def.type & IT_SHIP) {
					item_obj["unfinished"] = true;
					item_obj["needs"] = item.num;
				} else {
					item_obj["amount"] = item.num;
				}
				if (see_illusion && (def.type & IT_ILLUSION)) item_obj["illusion"] = true;
				j["items"].push_back(item_obj);
			}
		}
	}
}

AString *Unit::BattleReport(int obs)
{
	AString *temp = new AString("");
	if (Globals->BATTLE_FACTION_INFO)
		*temp += GetName(obs);
	else
		*temp += *name;

	if (GetFlag(FLAG_BEHIND)) *temp += ", behind";

	*temp += items.BattleReport();

	for(auto s: skills) {
		if (SkillDefs[s->type].flags & SkillType::BATTLEREP) {
			int lvl = GetAvailSkill(s->type);
			if (lvl) {
				*temp += ", ";
				*temp += SkillDefs[s->type].name;
				*temp += " ";
				*temp += lvl;
			}
		}
	}

	if (describe) {
		*temp += "; ";
		*temp += *describe;
	}

	*temp += ".";
	return temp;
}

void Unit::ClearOrders()
{
	canattack = 1;
	nomove = 0;
	routed = 0;
	enter = 0;
	build = 0;
	destroy = 0;
	attackorders = nullptr;
	evictorders = nullptr;
	stealthorders = nullptr;
	promote = nullptr;
	taxing = TAX_NONE;
	advancefrom = nullptr;
	monthorders = nullptr;
	inTurnBlock = 0;
	presentTaxing = 0;
	presentMonthOrders = nullptr;
	castorders = nullptr;
	teleportorders = nullptr;
	sacrificeorders = nullptr;
}

void Unit::ClearCastOrders()
{
	castorders = nullptr;
	teleportorders = nullptr;
}

void Unit::DefaultOrders(Object *obj)
{
	int weight, i;
	ARegion *r, *n;

	ClearOrders();
	if (type == U_WMON) {
		if (ObjectDefs[obj->type].monster == -1) {
			// determine terrain perferences
			std::set<int> forbidden;
			std::set<int> perferred;

			int aggression = 0;
			for(auto it: items) {
				ItemType &itemType = ItemDefs[it.type];

				if (!(itemType.type & IT_MONSTER)) {
					continue;
				}

				MonType *monster = FindMonster(itemType.abr, (itemType.type & IT_ILLUSION));
				aggression = std::max(aggression, monster->getAggression());

				// bad terrain is an union of all bad terrains
				for (auto & item : monster->forbiddenTerrain) {
					forbidden.insert(item);
				}

				// for simplicity good terrains will be union too
				for (auto & item : monster->preferredTerrain) {
					perferred.insert(item);
				}
			}

			weight = items.Weight();
			r = obj->region;

			// this vector will contain all directions where monster can move
			// normal move chance will contain two enteries
			// reduced move chacne will containe one entry
			std::vector<int> directions;

			// then chance of a wandering monster not moving will be 2 / (available dirs + 2)
			// it is why we add 4 entries (see comment above) to the directions list
			directions.push_back(-1);
			directions.push_back(-1);
			directions.push_back(-1);
			directions.push_back(-1);

			for (i = 0; i < NDIRS; i++) {
				n = r->neighbors[i];
				if (!n) {
					continue;
				}

				const int terrainSimilarType = TerrainDefs[n->type].similar_type;

				if (terrainSimilarType == R_OCEAN && !CanReallySwim() &&
						!(CanFly(weight) && Globals->FLIGHT_OVER_WATER == GameDefs::WFLIGHT_UNLIMITED)) {
					continue;
				}

				if (terrainSimilarType != R_OCEAN && !CanWalk(weight) && !CanRide(weight) && !CanFly(weight)) {
					continue;
				}

				if (!forbidden.empty() && forbidden.find(terrainSimilarType) != forbidden.end()) {
					// the direction is in a bad terrain, monster will not move there
					continue;
				}

				if (perferred.empty() || perferred.find(terrainSimilarType) != perferred.end()) {
					// if there are no preferred terrains at all
					//   or target terrain is in preferred terrains list
					// add 2 move direction entries into the list for normal hit chance
					directions.push_back(i);
					directions.push_back(i);
				}
				else {
					// this is direction to the neutral terrain, we must check can monster move there
					// monster will be able to move there only if target region is connected with a good terrain

					bool connectedToGoodTerrain = false;
					for (int j = 0; j < NDIRS; j++) {
						auto region = n->neighbors[j];
						if (!region) {
							continue;
						}

						if (perferred.find(TerrainDefs[region->type].similar_type) != perferred.end()) {
							connectedToGoodTerrain = true;
							break;
						}
					}

					if (connectedToGoodTerrain) {
						// 2x lower chance to enter neutral region
						directions.push_back(i);
					}
				}
			}

			// pick a direction where to move
			// it will be uniform selection of all possible directions, better than previos alogrithm
			int dirIndex = getrandom(directions.size());
			int dir = directions[dirIndex];

			if (dir >= 0) {
				std::shared_ptr<MoveOrder> o = std::make_shared<MoveOrder>();
				o->advancing = 0;

				if (getrandom(100) < aggression) {
					o->advancing = 1;
				}

				MoveDir d(dir);
				o->dirs.push_back(d);
				monthorders = o;
			}
		}
	}	//if (type == U_WMON) {

	else if (type == U_GUARD) {
		if (guard != GUARD_GUARD)
			guard = GUARD_SET;
	}

	else if (type == U_GUARDMAGE) {
		combat = S_FIRE;
	}

	else{
		/* Set up default orders for factions which submit none */
		if (obj->region->type != R_NEXUS) {
			if (GetFlag(FLAG_AUTOTAX) &&
					Globals->TAX_PILLAGE_MONTH_LONG && Taxers(1)) {
				taxing = TAX_AUTO;
			} else {
				std::shared_ptr<ProduceOrder> order = std::make_shared<ProduceOrder>();
				order->skill = -1;
				order->item = I_SILVER;
				order->target = 0;
				order->quiet = 1;
				monthorders = order;
			}
		}
	}
}

void Unit::PostTurn(ARegion *r)
{
	if (type == U_WMON) {
		for(auto it = items.begin(); it != items.end(); ++it) {
			if (!(ItemDefs[it->type].type & IT_MONSTER)) {
				it = items.erase(it);
				it--;
			}
		}
		if (free > 0) --free;
	}
}

void Unit::SetName(AString *s)
{
	if (s) {
		AString *newname = s->getlegal();
		if (!newname) {
			delete s;
			return;
		}
		*newname += AString(" (") + num + ")";
		delete s;
		delete name;
		name = newname;
	}
}

void Unit::SetDescribe(AString *s)
{
	if (describe) delete describe;
	if (s) {
		AString *newname = s->getlegal();
		delete s;
		describe = newname;
	} else
		describe = 0;
}

int Unit::IsAlive()
{
	if (type == U_MAGE || type == U_APPRENTICE) {
		return(GetMen());
	} else {
		for(auto i: items) {
			if (IsSoldier(i.type) && i.num > 0)
				return 1;
		}
	}
	return 0;
}

void Unit::SetMen(int t, int n)
{
	if (ItemDefs[t].type & IT_MAN) {
		int oldmen = GetMen();
		items.SetNum(t, n);
		int newmen = GetMen();
		if (newmen < oldmen) {
			delete skills.Split(oldmen, oldmen - newmen);
		}
	} else {
		/* This is probably a monster in this case */
		items.SetNum(t, n);
	}
}

int Unit::GetMen(int t)
{
	return items.GetNum(t);
}

int Unit::GetMons()
{
	int n=0;
	for(auto i: items) {
		if (ItemDefs[i.type].type & IT_MONSTER) {
			n += i.num;
		}
	}
	return n;
}

int Unit::GetMen()
{
	int n = 0;
	for(auto i: items) {
		if (ItemDefs[i.type].type & IT_MAN) {
			n += i.num;
		}
	}
	return n;
}

int Unit::GetLeaders()
{
	int n = 0;
	for(auto i: items) {
		if (ItemDefs[i.type].type & IT_LEADER) {
			n += i.num;
		}
	}
	return n;
}

int Unit::GetSoldiers()
{
	int n = 0;
	for(auto i: items) {
		if (IsSoldier(i.type)) n += i.num;
	}

	return n;
}

void Unit::SetMoney(int n)
{
	items.SetNum(I_SILVER, n);
}

int Unit::GetMoney()
{
	return items.GetNum(I_SILVER);
}

int Unit::GetSharedNum(int item)
{
	int count = 0;

	if (ItemDefs[item].type & IT_MAN)
		return items.GetNum(item);

	forlist((&object->region->objects)) {
		Object *obj = (Object *) elem;
		for(auto u: obj->units) {
			if ((u->num == num) ||
			(u->faction == faction && u->GetFlag(FLAG_SHARING)))
				count += u->items.GetNum(item);
		}
	}

	return count;
}

void Unit::ConsumeShared(int item, int needed)
{
	// Use up items carried by the using unit first
	int amount = items.GetNum(item);
	int used = min(amount, needed);
	needed -= used;
	items.SetNum(item, amount - used);
	// If we had enough, we are done
	if (needed == 0) return;

	// We still need more, so look for whomever is able to share with us
	forlist((&object->region->objects)) {
		Object *obj = (Object *) elem;
		for(auto u: obj->units) {
			if (u->faction == faction && u->GetFlag(FLAG_SHARING)) {
				amount = u->items.GetNum(item);
				if (amount < 1) continue;
				used = min(needed, amount);
				u->items.SetNum(item, amount - used);
				needed -= used;
				string temp = string(u->name->const_str()) + " shares " + ItemString(item, used) +
					" with " + name->const_str() + ".";
				u->event(temp, "share");
				// If the need has been filled, then we are done
				if (needed == 0) return;
			}
		}
	}
}

int Unit::GetSharedMoney()
{
	return GetSharedNum(I_SILVER);
}

void Unit::ConsumeSharedMoney(int n)
{
	return ConsumeShared(I_SILVER, n);
}

int Unit::GetAttackRiding()
{
    int riding = 0;
	if (type == U_WMON) {
		for(auto i: items) {
			if (ItemDefs[i.type].type & IT_MONSTER) {
				if (ItemDefs[i.type].fly) {
					return 5;
				}
				if (ItemDefs[i.type].ride) riding = 3;
			}
		}
		return riding;
	} else {
		int attackriding = 0;
		int minweight = 10000;
        AString skname;
		for(auto i: items) {
			if (ItemDefs[i.type].type & IT_MAN)
				if (ItemDefs[i.type].weight < minweight)
					minweight = ItemDefs[i.type].weight;
		}
		for(auto i: items) {
            if (!(ItemDefs[i.type].type & IT_MOUNT)) continue;

            MountType *mount = FindMount(ItemDefs[i.type].abr);
            if (!mount) continue;

            int maxBonus = mount->maxBonus;
            /*
             * This code applies terrain restrictions to the attack riding
             * calculations, but given that these have never been applied
             * historically we probably don't want to start now.
             * Thus: for reference only.
            int canRide = TerrainDefs[object->region->type].flags & TerrainType::RIDINGMOUNTS;
            int canFly = TerrainDefs[object->region->type].flags & TerrainType::FLYINGMOUNTS;
            if (canRide && !canFly)
                maxBonus = mount->maxHamperedBonus;
            if (!canRide && !canFly)
                maxBonus = 0;
            */
            skname = mount->skill;
            int skill = LookupSkill(&skname);
            if (skill == -1) {
                // This mount doesn't require skill to use.
                // I guess the rider gets the max bonus!
                if (attackriding < maxBonus)
                    attackriding = maxBonus;
            } else {
                riding = GetSkill(skill);
                if ((ItemDefs[i.type].type & IT_MAN) ||
						(ItemDefs[i.type].fly - ItemDefs[i.type].weight >= minweight)||
						(ItemDefs[i.type].ride - ItemDefs[i.type].weight >= minweight)) {
                    if (riding > maxBonus)
                        riding = maxBonus;
                    if (attackriding < riding)
                        attackriding = riding;
                }
            }
		}
		return attackriding;
	}
}

int Unit::GetDefenseRiding()
{
	if (guard == GUARD_GUARD) return 0;

	int riding = 0;
	int weight = Weight();

	if (CanFly(weight)) {
        riding = 5;
        // Limit riding to the slowest flying mount
		for(auto i: items) {
			if (ItemDefs[i.type].type & IT_MOUNT && ItemDefs[i.type].fly) {
                MountType *mount = FindMount(ItemDefs[i.type].abr);
                if (mount) {
                    // If we wanted to apply terrain restrictions,
                    // we'd do it here
                    if (mount->maxBonus < riding)
                        riding = mount->maxBonus;
                }
            }
        }
	} else if (CanRide(weight)) {
        riding = 3;
        // Limit riding to the slowest riding mount
		for(auto i: items) {
			if (ItemDefs[i.type].type & IT_MOUNT && ItemDefs[i.type].ride) {
                MountType *mount = FindMount(ItemDefs[i.type].abr);
                if (mount) {
                    // If we wanted to apply terrain restrictions,
                    // we'd also do it here
                    if (mount->maxBonus < riding)
                        riding = mount->maxBonus;
                }
            }
        }
    }

	if (GetMen()) {
		int manriding = GetSkill(S_RIDING);
		if (manriding < riding) return manriding;
	}

	return riding;
}

int Unit::GetSkill(int sk)
{
	if (sk == S_TACTICS) return GetAttribute("tactics");
	if (sk == S_STEALTH) return GetAttribute("stealth");
	if (sk == S_OBSERVATION) return GetAttribute("observation");
	if (sk == S_ENTERTAINMENT) return GetAttribute("entertainment");
	int retval = GetAvailSkill(sk);
	return retval;
}

void Unit::SetSkill(int sk, int level)
{
	skills.SetDays(sk, GetDaysByLevel(level) * GetMen());
	skills.SetExp(sk, 0);
}

int Unit::GetAvailSkill(int sk)
{
	AString str;
	int retval = GetRealSkill(sk);

	for(auto i: items) {
		if (ItemDefs[i.type].flags & ItemType::DISABLED) continue;
		if ((ItemDefs[i.type].type & IT_MAGEONLY) && type != U_MAGE && type != U_APPRENTICE && type != U_GUARDMAGE)
			continue;
		if ((SkillDefs[sk].flags & SkillType::MAGIC) && type != U_MAGE && type != U_APPRENTICE && type != U_GUARDMAGE)
			continue;
		if (i.num < GetMen()) continue;
		str = ItemDefs[i.type].grantSkill;
		if (ItemDefs[i.type].grantSkill && LookupSkill(&str) == sk) {
			int grant = 0;
			for (unsigned j = 0; j < sizeof(ItemDefs[0].fromSkills) / sizeof(ItemDefs[0].fromSkills[0]); j++) {
				if (ItemDefs[i.type].fromSkills[j]) {
					str = ItemDefs[i.type].fromSkills[j];

					int fromSkill = LookupSkill(&str);
					if (fromSkill != -1) {
						/*
							Should this use GetRealSkill or GetAvailSkill?
							GetAvailSkill could cause unbounded recursion,
							but only if the GM sets up items stupidly...
						*/
						if (grant < GetRealSkill(fromSkill))
							grant = GetRealSkill(fromSkill);
					}
				}
			}
			if (grant < ItemDefs[i.type].minGrant)
				grant = ItemDefs[i.type].minGrant;
			if (grant > ItemDefs[i.type].maxGrant)
				grant = ItemDefs[i.type].maxGrant;

			if (grant > retval)
				retval = grant;
		}
	}

	// Check for a skill granted by a structure
	if (object && object->type != O_DUMMY) {
		ObjectType ob = ObjectDefs[object->type];
		if (ob.flags & ObjectType::GRANTSKILL && object->GetOwner() == this) {
			if (ob.granted_skill == sk) {
				int grant = ob.granted_level;
				if (grant > retval) retval = grant;
			}
		}
	}

	return retval;
}

int Unit::GetRealSkill(int sk)
{
	if (GetMen()) {
		return GetLevelByDays(skills.GetDays(sk)/GetMen());
	} else {
		return 0;
	}
}

void Unit::ForgetSkill(int sk)
{
	skills.SetDays(sk, 0);
	if (type == U_MAGE) {
		for(auto s: skills) {
			if (SkillDefs[s->type].flags & SkillType::MAGIC) {
				return;
			}
		}
		type = U_NORMAL;
	}
	if (type == U_APPRENTICE) {
		for(auto s: skills) {
			if (SkillDefs[s->type].flags & SkillType::APPRENTICE) {
				return;
			}
		}
		type = U_NORMAL;
	}
}

int Unit::CheckDepend(int lev, SkillDepend &dep)
{
	AString skname = dep.skill;
	int sk = LookupSkill(&skname);
	if (sk == -1) return 0;
	int temp = GetRealSkill(sk);
	if (temp < dep.level) return 0;
	if (lev >= temp) return 0;
	return 1;
}

int Unit::CanStudy(int sk)
{
	if (skills.GetStudyRate(sk, GetMen()) < 1) return 0;

	if (Globals->SKILL_LIMIT_NONLEADERS && IsNormal() && skills.GetDays(sk) < 1 && skills.size() > 0) {
		if (!Globals->MAGE_NONLEADERS || !(SkillDefs[sk].flags & SkillType::MAGIC))
		return 0;
	}

	int curlev = GetRealSkill(sk);

	if (SkillDefs[sk].flags & SkillType::DISABLED) return 0;

	unsigned int c;
	for (c = 0; c < sizeof(SkillDefs[sk].depends)/sizeof(SkillDefs[sk].depends[0]); c++) {
		if (SkillDefs[sk].depends[c].skill == NULL) return 1;
		SkillType *pS = FindSkill(SkillDefs[sk].depends[c].skill);
		if (pS && (pS->flags & SkillType::DISABLED)) continue;
		if (!CheckDepend(curlev, SkillDefs[sk].depends[c])) return 0;
	}
	return 1;
}

int Unit::Study(int sk, int days)
{
	if (Globals->SKILL_LIMIT_NONLEADERS && !IsLeader()) {
		if (SkillDefs[sk].flags & SkillType::MAGIC) {
			for(auto s: skills) {
				if (!(SkillDefs[s->type].flags & SkillType::MAGIC)) {
					error("STUDY: Non-leader mages cannot possess non-magical skills.");
					return 0;
				}
			}
		} else if (skills.size()) {
			Skill *s = skills.front();
			if ((s->type != sk) && (s->days > 0)) {
				error("STUDY: Can know only 1 skill.");
				return 0;
			}
		}
	}
	int max = GetSkillMax(sk);
	if (GetRealSkill(sk) >= max) {
		error("STUDY: Maximum level for skill reached.");
		return 0;
	}

	if (!CanStudy(sk)) {
		if (GetRealSkill(sk) > 0)
			error("STUDY: Doesn't have the pre-requisite skills to study that.");
		else
			error("STUDY: Can't study that.");
		return 0;
	}

	skills.SetDays(sk, skills.GetDays(sk) + days);
	AdjustSkills();

	/* Check to see if we need to show a skill report */
	int lvl = GetRealSkill(sk);
	int shown = faction->skills.GetDays(sk);
	while (lvl > shown) {
		shown++;
		faction->skills.SetDays(sk, shown);
		faction->shows.push_back({.skill = sk, .level = shown});
	}
	return 1;
}

int Unit::GetSkillMax(int sk)
{
	int max = 0;

	if (SkillDefs[sk].flags & SkillType::DISABLED) return 0;

	for(auto i: items) {
		if (ItemDefs[i.type].flags & ItemType::DISABLED) continue;
		if (!(ItemDefs[i.type].type & IT_MAN)) continue;
		int m = SkillMax(SkillDefs[sk].abbr, i.type);
		if ((max == 0 && m > max) || (m < max)) max = m;
	}
	return max;
}

int Unit::Practice(int sk)
{
	int bonus, men, curlev, reqsk, reqlev, days;
	unsigned int i;

	bonus = Globals->SKILL_PRACTICE_AMOUNT;
	if (bonus == 0) bonus = Globals->REQUIRED_EXPERIENCE / 8;
	if (practiced || (bonus < 1)) return 1;
	days = skills.GetDays(sk);
	men = GetMen();

	if (GetAvailSkill(sk) > GetRealSkill(sk)) {
		// This is a skill granted by an item, so try to practice
		// the skills it depends on (if any)
		AString str;

		reqlev = 0;

		for(auto it: items) {
			if (ItemDefs[it.type].flags & ItemType::DISABLED) continue;
			if ((ItemDefs[it.type].type & IT_MAGEONLY) && type != U_MAGE && type != U_APPRENTICE && type != U_GUARDMAGE)
				continue;
			if ((SkillDefs[sk].flags & SkillType::MAGIC) && type != U_MAGE && type != U_APPRENTICE && type != U_GUARDMAGE)
				continue;
			if (it.num < GetMen())
				continue;
			str = ItemDefs[it.type].grantSkill;
			if (ItemDefs[it.type].grantSkill && LookupSkill(&str) == sk) {
				for (unsigned j = 0; j < sizeof(ItemDefs[0].fromSkills) / sizeof(ItemDefs[0].fromSkills[0]); j++) {
					if (ItemDefs[it.type].fromSkills[j]) {
						int fromSkill;

						str = ItemDefs[it.type].fromSkills[j];

						fromSkill = LookupSkill(&str);
						if (fromSkill != -1 && GetRealSkill(fromSkill) > reqlev) {
							reqsk = fromSkill;
							reqlev = GetRealSkill(fromSkill);
						}
					}
				}
			}
		}

		if (reqlev > 0) {
			// Since granting items use the highest contributing
			// skill, practice that skill.
			Practice(reqsk);
			return 1;
		}
	}

	if (men < 1 || ((days < 1) && (!Globals->REQUIRED_EXPERIENCE))) return 0;

	int max = GetSkillMax(sk);
	curlev = GetRealSkill(sk);
	if (curlev >= max) return 0;

	for (i = 0; i < sizeof(SkillDefs[sk].depends)/sizeof(SkillDefs[sk].depends[0]); i++) {
		AString skname = SkillDefs[sk].depends[i].skill;
		reqsk = LookupSkill(&skname);
		if (reqsk == -1) break;
		if (SkillDefs[reqsk].flags & SkillType::DISABLED) continue;
		if (SkillDefs[reqsk].flags & SkillType::NOEXP) continue;
		reqlev = GetRealSkill(reqsk);
		if (reqlev <= curlev) {
			if (Practice(reqsk))
				return 1;
			// We don't meet the reqs, and can't practice that
			// req, but we still need to check the other reqs.
			bonus = 0;
		}
	}

	if (bonus) {
		if (!Globals->REQUIRED_EXPERIENCE) {
			Study(sk, men * bonus);
		} else {
			// check if it's a nonleader and this is not it's
			// only skill
			if (Globals->SKILL_LIMIT_NONLEADERS && !IsLeader()) {
				for(auto s: skills) {
					if ((s->days > 0) && (s->type != sk)) {
						return 0;
					}
				}
			}
			// don't raise exp above the maximum days for
			// that unit
			int max = men * GetDaysByLevel(GetSkillMax(sk));
			int exp = skills.GetExp(sk);
			exp += men * bonus;
			if (exp > max) exp = max;
			skills.SetExp(sk, exp);
		}
		practiced = 1;
		event("Gets " + to_string(bonus) +" days of practice with " + SkillStrs(sk).const_str() + ".", "practice");
	}

	return bonus;
}

int Unit::IsLeader()
{
	if (GetLeaders()) return 1;
	return 0;
}

int Unit::IsNormal()
{
	if (GetMen() && !IsLeader()) return 1;
	return 0;
}

void Unit::AdjustSkills()
{
	if (!IsLeader() && Globals->SKILL_LIMIT_NONLEADERS) {
		//
		// Not a leader: can only know 1 skill
		//
		if (skills.size() > 1) {
			//
			// Find highest skill, eliminate others
			//
			unsigned int max = 0;
			Skill *maxskill = 0;
			for(auto s: skills) {
				if (s->days > max) {
					max = s->days;
					maxskill = s;
				}
			}

			// In order to avoid modifying the container while iterating, we will collect the skills to remove and
			// then remove them after
			std::vector<Skill *> skillsToRemove;
			for(auto s: skills) {
				if (s != maxskill) {
					// Allow multiple skills if they're all
					// magical ones
					if ((SkillDefs[maxskill->type].flags & SkillType::MAGIC) &&
							(SkillDefs[s->type].flags & SkillType::MAGIC) )
						continue;
					if ((Globals->REQUIRED_EXPERIENCE) && (s->exp > 0)) continue;
					skillsToRemove.push_back(s);
				}
			}
			if (!skillsToRemove.empty()) {
				for(auto s: skillsToRemove) {
					skills.erase(s);
					delete s;
				}
			}
		}
	}

	// Everyone: limit all skills to their maximum level
	for(auto theskill: skills) {
		int max = GetSkillMax(theskill->type);
		if (GetRealSkill(theskill->type) >= max) {
			theskill->days = GetDaysByLevel(max) * GetMen();
		}
	}
}

int Unit::MaintCost(ARegionList *regions, ARegion *current_region)
{
	int retval = 0;
	int i;
	if (type == U_WMON || type == U_GUARD || type == U_GUARDMAGE) return 0;

	int leaders = GetLeaders();
	if (leaders < 0) leaders = 0;
	int nonleaders = GetMen() - leaders;
	if (nonleaders < 0) nonleaders = 0;

	// Handle leaders
	// Leaders are counted at maintenance_multiplier * skills in all except
	// the case where it's not being used (mages, leaders, all)
	if (Globals->MULTIPLIER_USE != GameDefs::MULT_NONE) {
		i = leaders * SkillLevels() * Globals->MAINTENANCE_MULTIPLIER;
		if (i < (leaders * Globals->LEADER_COST))
			i = leaders * Globals->LEADER_COST;
	} else
		i = leaders * Globals->LEADER_COST;
	retval += i;

	// Handle non-leaders
	// Non leaders are counted at maintenance_multiplier * skills only if
	// all characters pay that way.
	if (Globals->MULTIPLIER_USE == GameDefs::MULT_ALL) {
		i = nonleaders * SkillLevels() * Globals->MAINTENANCE_MULTIPLIER;
		if (i < (nonleaders * Globals->MAINTENANCE_COST))
			i = nonleaders * Globals->MAINTENANCE_COST;
	} else
		i = nonleaders * Globals->MAINTENANCE_COST;
	retval += i;

	// Check for any items which require item specific maintenance and handling
	for(auto it: items) {
		if (!(ItemDefs[it.type].flags & ItemType::MAINTENANCE)) continue;
		int cost = ItemDefs[it.type].baseprice * it.num;
		// Now, do a special check for NO7 victory work based on the flags.  Ideally the structure to seek
		// would be a field on the item, but that would require a ton of changes to all hundreds of item defs.
		if (ItemDefs[it.type].flags & ItemType::SEEK_ALTAR) {
			// if the unit moved, figure out if it moved toward or away from an altar
			if (initial_region) {
				// Find the nearest O_RITUAL_ALTAR from the start of turn location (initial_region)
				int start_distance = regions->FindDistanceToNearestObject(O_RITUAL_ALTAR, initial_region);
				// Find the nearest O_RITUAL_ALTAR from the current location
				int final_distance = regions->FindDistanceToNearestObject(O_RITUAL_ALTAR, current_region);
				// compute the difference.
				if (final_distance < start_distance) {
					// If we've moved closer, halve the cost
					cost /= 2;
				} else if (final_distance > start_distance) {
					// We have moved away, charge 5 times as much.
					cost *= 5;
				}
			}
		}
		retval += cost;
	}

	return retval;
}

void Unit::Short(int needed, int hunger)
{
	int i, n = 0, levels;

	if (faction->is_npc)
		return; // Don't starve monsters and the city guard!

	if (needed < 1 && hunger < 1) return;

	switch(Globals->SKILL_STARVATION) {
		case GameDefs::STARVE_MAGES:
			if (type == U_MAGE) SkillStarvation();
			return;
		case GameDefs::STARVE_LEADERS:
			if (GetLeaders()) SkillStarvation();
			return;
		case GameDefs::STARVE_ALL:
			SkillStarvation();
			return;
	}

	for (i = 0; i<= NITEMS; i++) {
		if (!(ItemDefs[ i ].type & IT_MAN)) {
			// Only men need sustenance.
			continue;
		}

		if (ItemDefs[i].type & IT_LEADER) {
			// Don't starve leaders just yet.
			continue;
		}

		while (GetMen(i)) {
			if (getrandom(100) < Globals->STARVE_PERCENT) {
				SetMen(i, GetMen(i) - 1);
				n++;
			}
			if (Globals->MULTIPLIER_USE == GameDefs::MULT_ALL) {
				levels = SkillLevels();
				i = levels * Globals->MAINTENANCE_MULTIPLIER;
				if (i < Globals->MAINTENANCE_COST)
					i = Globals->MAINTENANCE_COST;
				needed -= i;
			} else
				needed -= Globals->MAINTENANCE_COST;
			hunger -= Globals->UPKEEP_MINIMUM_FOOD;
			if (needed < 1 && hunger < 1) {
				if (n) error(to_string(n) + " starve to death.");
				return;
			}
		}
	}

	// Now starve leaders
	for (int i = 0; i<= NITEMS; i++) {
		if (!(ItemDefs[ i ].type & IT_MAN)) {
			// Only men need sustenance.
			continue;
		}

		if (!(ItemDefs[i].type & IT_LEADER)) {
			// now we're doing leaders
			continue;
		}

		while (GetMen(i)) {
			if (getrandom(100) < Globals->STARVE_PERCENT) {
				SetMen(i, GetMen(i) - 1);
				n++;
			}
			if (Globals->MULTIPLIER_USE != GameDefs::MULT_NONE) {
				levels = SkillLevels();
				i = levels * Globals->MAINTENANCE_MULTIPLIER;
				if (i < Globals->LEADER_COST)
					i = Globals->LEADER_COST;
				needed -= i;
			} else
				needed -= Globals->LEADER_COST;
			hunger -= Globals->UPKEEP_MINIMUM_FOOD;
			if (needed < 1 && hunger < 1) {
				if (n) error(to_string(n) + " starve to death.");
				return;
			}
		}
	}
}

int Unit::Weight()
{
	int retval = items.Weight();
	return retval;
}

int Unit::FlyingCapacity()
{
	int cap = 0;
	for(auto i: items) {
		// except ship items
		if (ItemDefs[i.type].type & IT_SHIP) continue;
		cap += ItemDefs[i.type].fly * i.num;
	}

	return cap;
}

int Unit::RidingCapacity()
{
	int cap = 0;
	for(auto i: items) {
		cap += ItemDefs[i.type].ride * i.num;
	}

	return cap;
}

int Unit::SwimmingCapacity()
{
	int cap = 0;
	for(auto i: items) {
		// except ship items
		if (ItemDefs[i.type].type & IT_SHIP) continue;
		cap += ItemDefs[i.type].swim * i.num;
	}

	return cap;
}

int Unit::WalkingCapacity()
{
	int cap = 0;
	for(auto i: items) {
		cap += ItemDefs[i.type].walk * i.num;
		if (ItemDefs[i.type].hitchItem != -1) {
			int hitch = ItemDefs[i.type].hitchItem;
			if (!(ItemDefs[hitch].flags & ItemType::DISABLED)) {
				int hitches = items.GetNum(hitch);
				int hitched = i.num;
				if (hitched > hitches) hitched = hitches;
				cap += hitched * ItemDefs[i.type].hitchwalk;
			}
		}
	}

	return cap;
}

int Unit::CanFly(int weight)
{
	if (FlyingCapacity() >= weight) return 1;
	return 0;
}

int Unit::CanReallySwim()
{
	if (IsAlive() && (SwimmingCapacity() >= items.Weight())) return 1;
	return 0;
}

int Unit::CanSwim()
{
	if (this->CanReallySwim())
		return 1;
	if ((Globals->FLIGHT_OVER_WATER != GameDefs::WFLIGHT_NONE) && this->CanFly())
		return 1;
	return 0;
}

int Unit::CanFly()
{
	int weight = items.Weight();
	return CanFly(weight);
}

int Unit::CanRide(int weight)
{
	if (RidingCapacity() >= weight) return 1;
	return 0;
}

int Unit::CanWalk(int weight)
{
	if (WalkingCapacity() >= weight) return 1;
	return 0;
}

int Unit::MoveType(ARegion *r)
{
	int weight;

	if (!r)
		r = object->region;
	weight = items.Weight();
	if (!weight)
		return M_NONE;
	if (CanFly(weight))
		return M_FLY;
	if (TerrainDefs[r->type].similar_type != R_OCEAN) {
		if (CanRide(weight))
			return M_RIDE;
		if (CanWalk(weight))
			return M_WALK;
	} else {
		/* Check if we should be able to 'swim' */
		/* This should become it's own M_TYPE sometime */
		if (CanSwim())
			return M_SWIM;
	}
	if (r->type == R_NEXUS)
		return M_WALK;
	return M_NONE;
}

static int ContributesToMovement(int movetype, int item)
{
	switch(movetype) {
		case M_WALK:
			if (ItemDefs[item].walk > 0)
				return ItemDefs[item].walk;
			break;
		case M_RIDE:
			if (ItemDefs[item].ride > 0)
				return ItemDefs[item].ride;
			break;
		case M_FLY:
			if (ItemDefs[item].fly > 0)
				return ItemDefs[item].fly;
			break;
		case M_SWIM:
			// incomplete ship items do have a "swimming"
			// capacity given, but don't help us to swim
			if (ItemDefs[item].type & IT_SHIP)
				return 0;
			if (ItemDefs[item].swim > 0)
				return ItemDefs[item].swim;
			break;
	}

	return 0;
}

int Unit::CalcMovePoints(ARegion *r)
{
	int movetype, speed, weight, cap, hitches;

	movetype = MoveType(r);
	speed = 0;
	if (movetype == M_NONE)
		return 0;

	for(auto i: items) {
		if (ContributesToMovement(movetype, i.type)) {
			if (ItemDefs[i.type].speed > speed)
				speed = ItemDefs[i.type].speed;
		}
	}
	weight = items.Weight();
	while (weight > 0 && speed > 0) {
		for(auto i: items) {
			cap = ContributesToMovement(movetype, i.type);
			if (ItemDefs[i.type].speed == speed) {
				if (cap > 0)
					weight -= cap * i.num;
				else if (ItemDefs[i.type].hitchItem != -1) {
					hitches = items.GetNum(ItemDefs[i.type].hitchItem);
					if (i.num < hitches)
						hitches = i.num;
					weight -= hitches * ItemDefs[i.type].hitchwalk;
				}
			}
		}
		if (weight > 0) {
			// Hm, can't move at max speed.  There must be
			// items with different speeds, and we have to
			// use some of the slower ones...
			speed--;
		}
	}

	if (weight > 0)
		return 0; // not that this should be possible!

	if (movetype == M_FLY) {
		if (GetAttribute("wind") > 0)
			speed += Globals->FLEET_WIND_BOOST;
	}

	if (speed > Globals->MAX_SPEED)
		speed = Globals->MAX_SPEED;

	return speed;
}

int Unit::CanMoveTo(ARegion *r1, ARegion *r2)
{
	if (r1 == r2) return 1;

	int exit = 1;
	int i;
	int dir;

	for (i=0; i<NDIRS; i++) {
		if (r1->neighbors[i] == r2) {
			exit = 0;
			dir = i;
			break;
		}
	}
	if (exit) return 0;
	exit = 1;
	for (i=0; i<NDIRS; i++) {
		if (r2->neighbors[i] == r1) {
			exit = 0;
			break;
		}
	}
	if (exit) return 0;

	int mt = MoveType();
	if (((TerrainDefs[r1->type].similar_type == R_OCEAN) ||
				(TerrainDefs[r2->type].similar_type == R_OCEAN)) &&
			(!CanSwim() || GetFlag(FLAG_NOCROSS_WATER)))
		return 0;
	int mp = CalcMovePoints() - moved;
	if (mp < (r2->MoveCost(mt, r1, dir, 0))) return 0;
	return 1;
}

int Unit::CanCatch(ARegion *r, Unit *u)
{
	return faction->CanCatch(r, u);
}

int Unit::CanSee(ARegion *r, Unit *u, int practice)
{
	return faction->CanSee(r, u, practice);
}

int Unit::AmtsPreventCrime(Unit *u)
{
	if (!u) return 0;

	int amulets = items.GetNum(I_AMULETOFTS);
	if ((u->items.GetNum(I_RINGOFI) < 1) || (amulets < 1)) return 0;
	int men = GetMen();
	if (men <= amulets) return 1;
	if (!Globals->PROPORTIONAL_AMTS_USAGE) return 0;
	if (getrandom(men) < amulets) return 1;
	return 0;
}

int Unit::GetAttitude(ARegion *r, Unit *u)
{
	if (faction == u->faction) return A_ALLY;
	int att = faction->get_attitude(u->faction->num);
	if (att >= A_FRIENDLY && att >= faction->defaultattitude) return att;

	if (CanSee(r, u) == 2)
		return att;
	else
		return faction->defaultattitude;
}

int Unit::Hostile()
{
	if (type != U_WMON) return 0;
	int retval = 0;
	for(auto i: items) {
		if (ItemDefs[i.type].type & IT_MONSTER) {
			MonType *mp = FindMonster(ItemDefs[i.type].abr, (ItemDefs[i.type].type & IT_ILLUSION));
			int hos = mp->hostile;
			if (hos > retval) retval = hos;
		}
	}
	return retval;
}

int Unit::Forbids(ARegion *r, Unit *u)
{
	if (guard != GUARD_GUARD) return 0;
	if (!IsAlive()) return 0;
	if (!CanSee(r, u, Globals->SKILL_PRACTICE_AMOUNT > 0)) return 0;
	if (!CanCatch(r, u)) return 0;
	if (GetAttitude(r, u) < A_NEUTRAL) return 1;
	return 0;
}

/* This function was modified to either return the amount of
   taxes this unit is eligible for (numtaxers == 0) or the
   number of taxing men (numtaxers > 0).
*/
int Unit::Taxers(int numtaxers)
{
	int totalMen = GetMen();
	int illusions = 0;
	int creatures = 0;
	int taxers = 0;
	int basetax = 0;
	int weapontax = 0;
	int armortax = 0;

	// check out items
	int numMelee= 0;
	int numUsableMelee = 0;
	int numBows = 0;
	int numUsableBows = 0;
	int numMounted= 0;
	int numUsableMounted = 0;
	int numMounts = 0;
	int numUsableMounts = 0;
	int numBattle = 0;
	int numUsableBattle = 0;
	int numArmor = 0;

	for(auto item: items) {
		BattleItemType *pBat = NULL;

		if ((ItemDefs[item.type].type & IT_BATTLE) &&
		((pBat = FindBattleItem(ItemDefs[item.type].abr)) != NULL) &&
		(pBat->flags & BattleItemType::SPECIAL)) {
		// Only consider offensive items
			if ((Globals->WHO_CAN_TAX & GameDefs::TAX_USABLE_BATTLE_ITEM) &&
			(!(pBat->flags & BattleItemType::MAGEONLY) ||
			 type == U_MAGE || type == U_APPRENTICE)) {
				numUsableBattle += item.num;
				numBattle += item.num;
				continue; // Don't count this as a weapon as well!
			}
			if (Globals->WHO_CAN_TAX & GameDefs::TAX_BATTLE_ITEM) {
				numBattle += item.num;
				continue; // Don't count this as a weapon as well!
			}
		}

		if (ItemDefs[item.type].type & IT_WEAPON) {
			WeaponType *pWep = FindWeapon(ItemDefs[item.type].abr);
			int num = item.num;
			int basesk = 0;
			AString skname = pWep->baseSkill;
			int sk = LookupSkill(&skname);
			if (sk != -1) basesk = GetSkill(sk);
			if (basesk == 0) {
				skname = pWep->orSkill;
				sk = LookupSkill(&skname);
				if (sk != -1) basesk = GetSkill(sk);
			}
			if (!(pWep->flags & WeaponType::NEEDSKILL)) {
				if (basesk) {
					numUsableMelee += num;
				}
				numMelee += num;
			} else if (pWep->flags & WeaponType::NOFOOT) {
				if (basesk) {
					numUsableMounted += num;
				}
				numMounted += num;
			} else {
				if (pWep->flags & WeaponType::RANGED) {
					if (basesk) {
						numUsableBows += num;
					}
					numBows += num;
				} else {
					if (basesk) {
						numUsableMelee += num;
					}
					numMelee += num;
				}
			}
		}

		if (ItemDefs[item.type].type & IT_MOUNT) {
			MountType *pm = FindMount(ItemDefs[item.type].abr);
			if (pm->skill) {
				AString skname = pm->skill;
				int sk = LookupSkill(&skname);
				if (pm->minBonus <= GetSkill(sk))
					numUsableMounts += item.num;
			} else
				numUsableMounts += item.num;
			numMounts += item.num;
		}

		if (ItemDefs[item.type].type & IT_MONSTER) {
			if (ItemDefs[item.type].type & IT_ILLUSION)
				illusions += item.num;
			else
				creatures += item.num;
		}

		if (ItemDefs[item.type].type & IT_ARMOR) {
			numArmor += item.num;
		}
	}


	// Ok, now process the counts!
	if ((Globals->WHO_CAN_TAX & GameDefs::TAX_ANYONE) ||
		((Globals->WHO_CAN_TAX & GameDefs::TAX_COMBAT_SKILL) &&
		 GetSkill(S_COMBAT)) ||
		((Globals->WHO_CAN_TAX & GameDefs::TAX_BOW_SKILL) &&
		 (GetSkill(S_CROSSBOW) || GetSkill(S_LONGBOW))) ||
		((Globals->WHO_CAN_TAX & GameDefs::TAX_RIDING_SKILL) &&
		 GetSkill(S_RIDING)) ||
		((Globals->WHO_CAN_TAX & GameDefs::TAX_STEALTH_SKILL) &&
		 GetSkill(S_STEALTH))) {
		basetax = totalMen;
		taxers = totalMen;

		// Weapon tax bonus
		if ((Globals->WHO_CAN_TAX & GameDefs::TAX_ANYONE) ||
		((Globals->WHO_CAN_TAX & GameDefs::TAX_COMBAT_SKILL) &&
		 GetSkill(S_COMBAT)) ||
		((Globals->WHO_CAN_TAX & GameDefs::TAX_STEALTH_SKILL) &&
		 GetSkill(S_STEALTH))) {
		 	if (numUsableMounted > numUsableMounts) {
		 		weapontax = numUsableMounts;
		 	} else {
		 		weapontax = numUsableMounted;
		 	}
		 	weapontax += numMelee;
		 }

		if (((Globals->WHO_CAN_TAX & GameDefs::TAX_BOW_SKILL) &&
		 (GetSkill(S_CROSSBOW) || GetSkill(S_LONGBOW)))) {
		 	weapontax += numUsableBows;
		 }
		if ((Globals->WHO_CAN_TAX & GameDefs::TAX_RIDING_SKILL) &&
		 GetSkill(S_RIDING)) {
		 	if (weapontax < numUsableMounts) weapontax = numUsableMounts;
		 }

	} else {

		if (Globals->WHO_CAN_TAX & GameDefs::TAX_USABLE_WEAPON) {
			if (numUsableMounted > numUsableMounts) {
				weapontax = numUsableMounts;
				taxers = numUsableMounts;
				numMounts -= numUsableMounts;
				numUsableMounts = 0;
			} else {
				weapontax = numUsableMounted;
				taxers = numUsableMounted;
				numMounts -= numUsableMounted;
				numUsableMounts -= numUsableMounted;
			}
			weapontax += numMelee + numUsableBows;
			taxers += numMelee + numUsableBows;
		} else if (Globals->WHO_CAN_TAX & GameDefs::TAX_ANY_WEAPON) {
			weapontax = numMelee + numBows + numMounted;
			taxers = numMelee + numBows + numMounted;
		} else {
			if (Globals->WHO_CAN_TAX &
					GameDefs::TAX_MELEE_WEAPON_AND_MATCHING_SKILL) {
				if (numUsableMounted > numUsableMounts) {
					weapontax += numUsableMounts;
					taxers += numUsableMounts;
					numMounts -= numUsableMounts;
					numUsableMounts = 0;
				} else {
					weapontax += numUsableMounted;
					taxers += numUsableMounted;
					numMounts -= numUsableMounted;
					numUsableMounts -= numUsableMounted;
				}
				weapontax += numUsableMelee;
				taxers += numUsableMelee;
			}
			if (Globals->WHO_CAN_TAX &
					GameDefs::TAX_BOW_SKILL_AND_MATCHING_WEAPON) {
				weapontax += numUsableBows;
				taxers += numUsableBows;
			}
		}

		if (Globals->WHO_CAN_TAX & GameDefs::TAX_HORSE) {
			weapontax += numMounts;
			taxers += numMounts;
		}
		else if (Globals->WHO_CAN_TAX & GameDefs::TAX_HORSE_AND_RIDING_SKILL) {
			weapontax += numUsableMounts;
			taxers += numUsableMounts;
		}

		if (Globals->WHO_CAN_TAX & GameDefs::TAX_BATTLE_ITEM) {
			weapontax += numBattle;
			taxers += numBattle;
		}
		else if (Globals->WHO_CAN_TAX & GameDefs::TAX_USABLE_BATTLE_ITEM) {
			weapontax += numUsableBattle;
			taxers += numUsableBattle;
		}

	}

	// Ok, all the items categories done - check for mages taxing
	if (type == U_MAGE) {
		if (Globals->WHO_CAN_TAX & GameDefs::TAX_ANY_MAGE) {
			basetax = totalMen;
			taxers = totalMen;
		}
		else {
			if (Globals->WHO_CAN_TAX & GameDefs::TAX_MAGE_COMBAT_SPELL) {
				if ((Globals->WHO_CAN_TAX & GameDefs::TAX_MAGE_DAMAGE) &&
						SkillDefs[combat].flags & SkillType::DAMAGE) {
					basetax = totalMen;
					taxers = totalMen;
				}

				if ((Globals->WHO_CAN_TAX & GameDefs::TAX_MAGE_FEAR) &&
						SkillDefs[combat].flags & SkillType::FEAR) {
					basetax = totalMen;
					taxers = totalMen;
				}

				if ((Globals->WHO_CAN_TAX & GameDefs::TAX_MAGE_OTHER) &&
						SkillDefs[combat].flags & SkillType::MAGEOTHER) {
					basetax = totalMen;
					taxers = totalMen;
				}
			} else {
				for(auto s: skills) {
					if ((Globals->WHO_CAN_TAX & GameDefs::TAX_MAGE_DAMAGE) &&
							SkillDefs[s->type].flags & SkillType::DAMAGE) {
						basetax = totalMen;
						taxers = totalMen;
						break;
					}
					if ((Globals->WHO_CAN_TAX & GameDefs::TAX_MAGE_FEAR) &&
							SkillDefs[s->type].flags & SkillType::FEAR) {
						basetax = totalMen;
						taxers = totalMen;
						break;
					}
					if ((Globals->WHO_CAN_TAX & GameDefs::TAX_MAGE_OTHER) &&
							SkillDefs[s->type].flags & SkillType::MAGEOTHER) {
						basetax = totalMen;
						taxers = totalMen;
						break;
					}
				}
			}
		}
	}

	armortax = numArmor;

	// Check for overabundance
	if (weapontax > totalMen) weapontax = totalMen;
	if (armortax > weapontax) armortax = weapontax;

	// Adjust basetax in case of weapon taxation
	if (basetax < weapontax) basetax = weapontax;

	// Now check for an overabundance of tax enabling objects
	if (taxers > totalMen) taxers = totalMen;

	// And finally for creatures
	if (Globals->WHO_CAN_TAX & GameDefs::TAX_CREATURES) {
		basetax += creatures;
		taxers += creatures;
	}

	if (Globals->WHO_CAN_TAX & GameDefs::TAX_ILLUSIONS) {
		basetax += illusions;
		taxers += illusions;
	}

	if (numtaxers) return(taxers);

	int taxes = Globals->TAX_BASE_INCOME * basetax
		+ Globals->TAX_BONUS_WEAPON * weapontax
		+ Globals->TAX_BONUS_ARMOR * armortax;
	return(taxes);
}

int Unit::GetFlag(int x)
{
	return (flags & x);
}

void Unit::SetFlag(int x, int val)
{
	if (val)
		flags = flags | x;
	else
		if (flags & x) flags -= x;
}

void Unit::CopyFlags(Unit *x)
{
	flags = x->flags;
	guard = GUARD_NONE;
	if (Taxers(1)) {
		if (x->guard != GUARD_SET && x->guard != GUARD_ADVANCE)
			guard = x->guard;
	} else {
		if (x->guard == GUARD_AVOID)
			guard = GUARD_AVOID;
		SetFlag(FLAG_AUTOTAX, 0);
	}
	reveal = x->reveal;
}

int Unit::GetBattleItem(AString &itm)
{
	int item = LookupItem(&itm);
	if (item == -1) return -1;

	int num = items.GetNum(item);
	if (num < 1) return -1;

	if (!(ItemDefs[item].type & IT_BATTLE)) return -1;
	// Exclude weapons.  They will be handled later.
	if (ItemDefs[item].type & IT_WEAPON) return -1;
	items.SetNum(item, num - 1);
	return item;
}

int Unit::GetArmor(AString &itm, int ass)
{
	int item = LookupItem(&itm);
	ArmorType *pa = FindArmor(itm.Str());

	if (pa == NULL) return -1;
	if (ass && !(pa->flags & ArmorType::USEINASSASSINATE)) return -1;

	int num = items.GetNum(item);
	if (num < 1) return -1;

	if (!(ItemDefs[item].type & IT_ARMOR)) return -1;
	items.SetNum(item, num - 1);
	return item;
}

int Unit::GetMount(AString &itm, int canFly, int canRide, int &bonus)
{
	bonus = 0;

	// This region doesn't allow riding or flying, so no mounts, bail
	if (!canFly && !canRide) return -1;

	int item = LookupItem(&itm);
	MountType *pMnt = FindMount(itm.Str());

	int num = items.GetNum(item);
	if (num < 1) return -1;

	if (canFly) {
		// If the mount cannot fly, and the region doesn't allow
		// riding mounts, bail
		if (!ItemDefs[item].fly && !canRide) return -1;
	} else {
		// This region allows riding mounts, so if the mount
		// can not carry at a riding level, bail
		if (!ItemDefs[item].ride) return -1;
	}

	if (pMnt->skill) {
		AString skname = pMnt->skill;
		int sk = LookupSkill(&skname);
		bonus = GetSkill(sk);
		if (bonus < pMnt->minBonus) {
			// Unit isn't skilled enough for this mount
			bonus = 0;
			return -1;
		}
		// Limit to max mount bonus;
		if (bonus > pMnt->maxBonus) bonus = pMnt->maxBonus;
		// If the mount can fly and the terrain doesn't allow
		// flying mounts, limit the bonus to the maximum hampered
		// bonus allowed by the mount
		if (ItemDefs[item].fly && !canFly) {
			if (bonus > pMnt->maxHamperedBonus)
				bonus = pMnt->maxHamperedBonus;
		}

		// Practice the mount's skill
		Practice(sk);
	}

	// Remove the mount from the unit to attach it to the soldier
	// UNLESS it IS the soldier (looking at you, Centaurs)
	if (!(ItemDefs[item].type & IT_MAN))
		items.SetNum(item, num - 1);
	return item;
}

int Unit::GetWeapon(AString &itm, int riding, int ridingBonus,
		int &attackBonus, int &defenseBonus, int &attacks, int &hitDamage)
{
	int item = LookupItem(&itm);
	WeaponType *pWep = FindWeapon(itm.Str());

	if (pWep == NULL) return -1;

	int num = items.GetNum(item);
	if (num < 1) return -1;

	if (!(ItemDefs[item].type & IT_WEAPON)) return -1;

	attackBonus = 0;
	defenseBonus = 0;
	attacks = 1;

	// Found a weapon, check flags and skills
	int baseSkillLevel = CanUseWeapon(pWep, riding);
	// returns -1 if weapon cannot be used, else the usable skill level
	if (baseSkillLevel == -1) return -1;

	// Attack and defense skill
	attackBonus = baseSkillLevel + pWep->attackBonus;
	if (pWep->flags & WeaponType::NOATTACKERSKILL)
		defenseBonus = pWep->defenseBonus;
	else
		defenseBonus = baseSkillLevel + pWep->defenseBonus;
	// Riding bonus
	if (pWep->flags & WeaponType::RIDINGBONUS) attackBonus += ridingBonus;
	if (pWep->flags & (WeaponType::RIDINGBONUSDEFENSE|WeaponType::RIDINGBONUS))
		defenseBonus += ridingBonus;
	// Number of attacks
	attacks = pWep->numAttacks;
	// Note: NUM_ATTACKS_SKILL must be > NUM_ATTACKS_HALF_SKILL
	if (attacks >= WeaponType::NUM_ATTACKS_SKILL)
		attacks += baseSkillLevel - WeaponType::NUM_ATTACKS_SKILL;
	else if (attacks >= WeaponType::NUM_ATTACKS_HALF_SKILL)
		attacks += (baseSkillLevel +1)/2 - WeaponType::NUM_ATTACKS_HALF_SKILL;
	// Sanity check
	if (attacks == 0) attacks = 1;

	hitDamage = pWep->hitDamage;
	// // Check if attackDamage is based on skill level
	// // >= used in case NUM_DAMAGE_SKILL+1
	if (hitDamage >= WeaponType::NUM_DAMAGE_SKILL) {
		hitDamage = hitDamage - WeaponType::NUM_DAMAGE_SKILL + baseSkillLevel;
	// >= used in case NUM_DAMAGE_HALF_SKILL+1
	} else if (hitDamage >= WeaponType::NUM_DAMAGE_HALF_SKILL) {
		hitDamage = hitDamage - WeaponType::NUM_DAMAGE_HALF_SKILL + (baseSkillLevel + 1)/2;
	}

	// get the weapon
	items.SetNum(item, num-1);
	return item;
}

void Unit::MoveUnit(Object *toobj)
{
	if (object) std::erase(object->units, this);
	object = toobj;
	if (object) {
		object->units.push_back(this);
		ObjectType& ob = ObjectDefs[object->type];
		if (object->GetOwner() == this  && ob.flags & ObjectType::GRANTSKILL) {
			if (faction->skills.GetDays(ob.granted_skill) < ob.granted_level) {
				faction->shows.push_back({ .skill = ob.granted_skill, .level = ob.granted_level });
				faction->skills.SetDays(ob.granted_skill, ob.granted_level);
			}
		}
	}
}

void Unit::DiscardUnfinishedShips() {
	int discard = 0;
	// remove all unfinished ship-type items
	for (int i=0; i<NITEMS; i++) {
		if (ItemDefs[i].type & IT_SHIP) {
			if (items.GetNum(i) > 0) discard = 1;
			items.SetNum(i,0);
		}
	}
	if (discard > 0) event("discards all unfinished ships.", "discard");
}

void Unit::event(const string& message, const string& category, ARegion *r)
{
	faction->event(message, category, r, this);
}

void Unit::error(const string& s) {
	faction->error(s, this);
}

int Unit::GetAttribute(char const *attrib)
{
	AttribModType *ap = FindAttrib(attrib);
	if (ap == NULL) return 0;
	AString temp;
	int base = 0;
	int bonus = 0;
	int monbase = -1;
	int monbonus = 0;

	if (ap->flags & AttribModType::CHECK_MONSTERS) {
		for(auto i: items) {
			if (ItemDefs[i.type].type & IT_MONSTER) {
				MonType *mp = FindMonster(ItemDefs[i.type].abr, (ItemDefs[i.type].type & IT_ILLUSION));
				int val = 0;
				temp = attrib;
				if (temp == "observation") val = mp->obs;
				else if (temp == "stealth") val = mp->stealth;
				else if (temp == "tactics") val = mp->tactics;
				else continue;
				if (monbase == -1) monbase = val;
				else if (ap->flags & AttribModType::USE_WORST)
					monbase = (val < monbase) ? val : monbase;
				else
					monbase = (val > monbase) ? val : monbase;
			}
		}
	}

	for (int index = 0; index < 5; index++) {
		int val = 0;
		if (ap->mods[index].flags & AttribModItem::SKILL) {
			temp = ap->mods[index].ident;
			int sk = LookupSkill(&temp);
			val = GetAvailSkill(sk);
			if (ap->mods[index].modtype == AttribModItem::UNIT_LEVEL_HALF) {
				val = ((val + 1)/2) * ap->mods[index].val;
			} else if (ap->mods[index].modtype == AttribModItem::CONSTANT) {
				val = ap->mods[index].val;
			} else {
				val *= ap->mods[index].val;
			}
		} else if (ap->mods[index].flags & AttribModItem::ITEM) {
			val = 0;
			temp = ap->mods[index].ident;
			int item = LookupItem(&temp);
			if (item != -1) {
				if (ItemDefs[item].type & IT_MAGEONLY
					&& type != U_MAGE
					&& type != U_APPRENTICE
					&& type != U_GUARDMAGE) {
					// Ignore mage only items for non-mages
				} else if (ap->mods[index].flags & AttribModItem::PERMAN) {
					int men = GetMen();
					if (men > 0 && men <= items.GetNum(item))
						val = ap->mods[index].val;
				} else {
					if (items.GetNum(item) > 0)
						val = ap->mods[index].val;
				}
			}
		} else if (ap->mods[index].flags & AttribModItem::FLAGGED) {
			temp = ap->mods[index].ident;
			if (temp == "invis")
				val = (GetFlag(FLAG_INVIS) ? ap->mods[index].val : 0);
			if (temp == "guard")
				val = (guard == GUARD_GUARD ? ap->mods[index].val : 0);

		}
		if (ap->mods[index].flags & AttribModItem::NOT)
			val = ((val == 0) ? ap->mods[index].val : 0);
		if (val && ap->mods[index].modtype == AttribModItem::FORCECONSTANT)
			return val;
		// Only flags can add to monster bonuses
		if (ap->mods[index].flags & AttribModItem::FLAGGED) {
			if (ap->flags & AttribModType::CHECK_MONSTERS) monbonus += val;
		}
		if (ap->mods[index].flags & AttribModItem::CUMULATIVE)
			base += val;
		else if (val > bonus) bonus = val;
	}

	base += bonus;

	if (monbase != -1) {
		monbase += monbonus;
		if (GetMen() > 0) {
			if (ap->flags & AttribModType::USE_WORST)
				base = (monbase < base) ? monbase : base;
			else
				base = (monbase > base) ? monbase : base;
		}
		else
			base = monbase; // monster units have no men
	}
	return base;
}

int Unit::PracticeAttribute(char const *attrib)
{
	AttribModType *ap = FindAttrib(attrib);
	if (ap == NULL) return 0;
	for (int index = 0; index < 5; index++) {
		if (ap->mods[index].flags & AttribModItem::SKILL) {
			AString temp = ap->mods[index].ident;
			int sk = LookupSkill(&temp);
			if (sk != -1)
				if (Practice(sk)) return 1;
		}
	}
	return 0;
}

int Unit::GetProductionBonus(int item)
{
	int bonus = 0;
	if (ItemDefs[item].mult_item != -1)
		bonus = items.GetNum(ItemDefs[item].mult_item);
	else
		bonus = GetMen();
	if (bonus > GetMen()) bonus = GetMen();
	return bonus * ItemDefs[item].mult_val;
}

int Unit::SkillLevels()
{
	int levels = 0;
	for(auto s: skills) {
		levels += GetLevelByDays(s->days/GetMen());
	}
	return levels;
}

Skill *Unit::GetSkillObject(int sk)
{
	for(auto s: skills) {
		if (s->type == sk)
			return s;
	}
	return NULL;
}

void Unit::SkillStarvation()
{
	int can_forget[NSKILLS];
	int count = 0;
	int i;
	for (i = 0; i < NSKILLS; i++) {
		if (SkillDefs[i].flags & SkillType::DISABLED) {
			can_forget[i] = 0;
			continue;
		}
		if (GetSkillObject(i)) {
			can_forget[i] = 1;
			count++;
		} else {
			can_forget[i] = 0;
		}
	}
	for (i = 0; i < NSKILLS; i++) {
		if (!can_forget[i]) continue;
		Skill *si = GetSkillObject(i);
		for (int j=0; j < NSKILLS; j++) {
			if (SkillDefs[j].flags & SkillType::DISABLED) continue;
			Skill *sj = GetSkillObject(j);
			int dependancy_level = 0;
			unsigned int c;
			for (c=0;c < sizeof(SkillDefs[i].depends)/sizeof(SkillDefs[i].depends[0]);c++) {
				AString skname = SkillDefs[i].depends[c].skill;
				if (skname == SkillDefs[j].abbr) {
					dependancy_level = SkillDefs[i].depends[c].level;
					break;
				}
			}
			if (dependancy_level > 0) {
				if (GetLevelByDays(sj->days) == GetLevelByDays(si->days)) {
					can_forget[j] = 0;
					count--;
				}
			}
		}
	}
	if (!count) {
		ItemList itemsCopy = items;  // Since we can remove men below, which could remove the item, iterate the copy.
		for(auto i: itemsCopy) {
			if (ItemDefs[i.type].type & IT_MAN) {
				count += items.GetNum(i.type);
				items.SetNum(i.type, 0);
			}
		}
		error(to_string(count) + " starve to death.");
		return;
	}
	count = getrandom(count)+1;
	for (i = 0; i < NSKILLS; i++) {
		if (can_forget[i]) {
			if (--count == 0) {
				Skill *s = GetSkillObject(i);
				error(string("Starves and forgets one level of ") + SkillDefs[i].name + ".");
				switch(GetLevelByDays(s->days)) {
					case 1:
						s->days -= 30;
						if (s->days <= 0)
							ForgetSkill(i);
						break;
					case 2:
						s->days -= 60;
						break;
					case 3:
						s->days -= 90;
						break;
					case 4:
						s->days -= 120;
						break;
					case 5:
						s->days -= 150;
						break;
				}
			}
		}
	}
	return;
}

int Unit::CanUseWeapon(WeaponType *pWep, int riding)
{
	if (riding == -1) {
		if (pWep->flags & WeaponType::NOFOOT) return -1;
	}
	else if (pWep->flags & WeaponType::NOMOUNT) return -1;
	return CanUseWeapon(pWep);
}

int Unit::CanUseWeapon(WeaponType *pWep)
{
	int baseSkillLevel = 0;
	int tempSkillLevel = 0;

	int bsk, orsk;
	AString skname;
	if (pWep->baseSkill != NULL) {
		skname = pWep->baseSkill;
		bsk = LookupSkill(&skname);
		if (bsk != -1) baseSkillLevel = GetSkill(bsk);
	}

	if (pWep->orSkill != NULL) {
		skname = pWep->orSkill;
		orsk = LookupSkill(&skname);
		if (orsk != -1) tempSkillLevel = GetSkill(orsk);
	}

	if (tempSkillLevel > baseSkillLevel) {
		baseSkillLevel = tempSkillLevel;
		Practice(orsk);
	} else
		Practice(bsk);

	if (pWep->flags & WeaponType::NEEDSKILL && !baseSkillLevel) return -1;

	return baseSkillLevel;
}