X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fbattle%2FBattle.cpp;fp=src%2Fbattle%2FBattle.cpp;h=7bfa940461e12cff44f90400d94327b58fc00e00;hb=087783315ac5955c17bb3b051c9351f321653df6;hp=0000000000000000000000000000000000000000;hpb=eb2ad5ffd08128d31af32f3929a3295fcfa251e9;p=l2e.git

diff --git a/src/battle/Battle.cpp b/src/battle/Battle.cpp
new file mode 100644
index 0000000..7bfa940
--- /dev/null
+++ b/src/battle/Battle.cpp
@@ -0,0 +1,385 @@
+#include "Battle.h"
+
+#include "AttackChoice.h"
+#include "PartyLayout.h"
+#include "TargetSelection.h"
+#include "../common/Stats.h"
+
+#include <cassert>
+#include <stdexcept>
+
+using common::Stats;
+
+
+namespace battle {
+
+Battle::Battle(
+		const PartyLayout *heroesLayout,
+		const PartyLayout *monstersLayout)
+: heroesLayout(heroesLayout)
+, monstersLayout(monstersLayout)
+, activeHero(-1)
+, attackCursor(-1)
+, expReward(0)
+, goldReward(0) {
+	if (!heroesLayout) {
+		throw std::invalid_argument("construct battle without heroes layout");
+	}
+	if (!monstersLayout) {
+		throw std::invalid_argument("construct battle without monsters layout");
+	}
+	heroes.reserve(4);
+	monsters.resize(monstersLayout->NumPositions());
+}
+
+
+void Battle::AddHero(const Hero &h) {
+	if (NumHeroes() == MaxHeroes()) {
+		throw std::overflow_error("max heroes breached");
+	}
+	heroes.push_back(h);
+	heroes.back().GetAttackChoice() = AttackChoice(this);
+}
+
+void Battle::AddMonster(const Monster &m) {
+	for (int i = 0; i < MaxMonsters(); ++i) {
+		if (!MonsterPositionOccupied(i)) {
+			MonsterAt(i) = m;
+			MonsterAt(i).GetAttackChoice() = AttackChoice(this);
+			return;
+		}
+	}
+	throw std::overflow_error("all monster positions occupied");
+}
+
+void Battle::SetCapsule(const Capsule &c) {
+	capsule = c;
+}
+
+
+int Battle::NumHeroes() const {
+	return heroes.size();
+}
+
+int Battle::MaxHeroes() const {
+	return heroesLayout->NumPositions() - 1;
+}
+
+int Battle::NumMonsters() const {
+	return monsters.size();
+}
+
+int Battle::MaxMonsters() const {
+	return monstersLayout->NumPositions();
+}
+
+bool Battle::HasCapsule() const {
+	return capsule.Active();
+}
+
+
+Hero &Battle::HeroAt(int index) {
+	assert(index >= 0 && index < NumHeroes() && "hero index out of bounds");
+	return heroes[index];
+}
+
+const Hero &Battle::HeroAt(int index) const {
+	assert(index >= 0 && index < NumHeroes() && "hero index out of bounds");
+	return heroes[index];
+}
+
+
+Monster &Battle::MonsterAt(int index) {
+	assert(index >= 0 && index < NumMonsters() && "monster index out of bounds");
+	return monsters[index];
+}
+
+const Monster &Battle::MonsterAt(int index) const {
+	assert(index >= 0 && index < NumMonsters() && "monster index out of bounds");
+	return monsters[index];
+}
+
+bool Battle::HeroPositionOccupied(int index) const {
+	return index >= 0 && index < NumHeroes();
+}
+
+bool Battle::HeroAlive(int index) const {
+	return HeroPositionOccupied(index) && HeroAt(index).Health() > 0;
+}
+
+
+bool Battle::MonsterPositionOccupied(int index) const {
+	return MonsterAlive(index);
+}
+
+bool Battle::MonsterAlive(int index) const {
+	return index >= 0 && index < NumMonsters() && MonsterAt(index).Health() > 0;
+}
+
+bool Battle::CapsuleAlive() const {
+	return capsule.Active() && capsule.Health() > 0;
+}
+
+
+void Battle::NextHero() {
+	++activeHero;
+	while (activeHero < NumHeroes() && HeroAt(activeHero).Health() == 0) {
+		++activeHero;
+	}
+}
+
+void Battle::PreviousHero() {
+	--activeHero;
+	while (activeHero >= 0 && HeroAt(activeHero).Health() == 0) {
+		--activeHero;
+	}
+}
+
+void Battle::SwapHeroes(int lhs, int rhs) {
+	if (lhs < 0 || lhs >= NumHeroes() || rhs < 0 || rhs >= NumHeroes() || lhs == rhs) return;
+	std::swap(HeroAt(lhs), HeroAt(rhs));
+}
+
+bool Battle::HasChosenAttackType() const {
+	return ActiveHero().GetAttackChoice().GetType() != AttackChoice::UNDECIDED;
+}
+
+bool Battle::AttackSelectionDone() const {
+	return activeHero >= NumHeroes();
+}
+
+
+class OrderCompare {
+public:
+	OrderCompare(Battle *battle) : battle(battle) { }
+	bool operator ()(const Battle::Order &lhs, const Battle::Order &rhs) {
+		return lhs.GetStats(*battle).Agility() > rhs.GetStats(*battle).Agility();
+	}
+private:
+	Battle *battle;
+};
+
+
+void Battle::CalculateAttackOrder() {
+	attackOrder.reserve(NumMonsters() + NumHeroes() + 1);
+	for (int i(0); i < NumHeroes(); ++i) {
+		attackOrder.push_back(Order(Order::HERO, i));
+	}
+	for (std::vector<Monster>::size_type i(0), end(NumMonsters()); i < end; ++i) {
+		attackOrder.push_back(Order(Order::MONSTER, i));
+		MonsterAt(i).GetAttackChoice() = AttackChoice(this);
+	}
+	if (GetCapsule().Active() && GetCapsule().Health() > 0) {
+		attackOrder.push_back(Order(Order::CAPSULE));
+	}
+	std::sort(attackOrder.begin(), attackOrder.end(), OrderCompare(this));
+}
+
+void Battle::NextAttack() {
+	if (Victory() || Defeat()) {
+		attackCursor = attackOrder.size();
+		return;
+	}
+	++attackCursor;
+	while (attackCursor < int(attackOrder.size())) {
+		if (attackOrder[attackCursor].IsMonster()) {
+			if (MonsterAlive(attackOrder[attackCursor].index)) break;
+		} else if (attackOrder[attackCursor].IsHero()) {
+			if (HeroAlive(attackOrder[attackCursor].index)) break;
+		} else {
+			if (CapsuleAlive()) break;
+		}
+		++attackCursor;
+	}
+}
+
+bool Battle::AttacksFinished() const {
+	return attackCursor >= int(attackOrder.size())
+			|| Victory() || Defeat();
+}
+
+void Battle::CalculateDamage() {
+	if (CurrentAttack().IsMonster()) {
+		DecideMonsterAttack(MonsterAt(CurrentAttack().index));
+	} else if (CurrentAttack().IsCapsule()) {
+		DecideCapsuleAttack();
+	}
+	AttackChoice &ac = CurrentAttack().GetAttackChoice(*this);
+	if (ac.GetType() == AttackChoice::DEFEND) return;
+	TargetSelection &ts(ac.Selection());
+
+	const Stats &attackerStats = CurrentAttack().GetStats(*this);
+	CalculateDamage(attackerStats, ts);
+}
+
+AttackChoice &Battle::Order::GetAttackChoice(Battle &b) const {
+	switch (by) {
+		case HERO:
+			return b.HeroAt(index).GetAttackChoice();
+		case CAPSULE:
+			return b.GetCapsule().GetAttackChoice();
+		case MONSTER:
+			return b.MonsterAt(index).GetAttackChoice();
+		default:
+			throw std::runtime_error("invalid case in Battle::Order::GetAttackChoice()");
+	}
+}
+
+Stats &Battle::Order::GetStats(Battle &b) const {
+	switch (by) {
+		case HERO:
+			return b.HeroAt(index).GetStats();
+		case CAPSULE:
+			return b.GetCapsule().GetStats();
+		case MONSTER:
+			return b.MonsterAt(index).GetStats();
+		default:
+			throw std::runtime_error("invalid case in BttleStats::Order::GetAttackChoice()");
+	}
+}
+
+void Battle::ApplyDamage() {
+	if (attackCursor < 0) return;
+	AttackChoice &ac = CurrentAttack().GetAttackChoice(*this);
+	TargetSelection &ts(ac.Selection());
+	if (ts.TargetsMonsters()) {
+		for (int i(0); i < NumMonsters(); ++i) {
+			Monster &monster(MonsterAt(i));
+			if (ts.IsBad(i)) {
+				monster.SubtractHealth(ts.GetAmount(i));
+				if (monster.Health() == 0) {
+					expReward += monster.ExpReward();
+					goldReward += monster.GoldReward();
+				}
+			}
+		}
+	} else {
+		for (int i(0); i < NumHeroes(); ++i) {
+			Hero &hero(HeroAt(i));
+			if (ts.IsBad(i)) {
+				hero.SubtractHealth(ts.GetAmount(i));
+			}
+		}
+	}
+}
+
+const Battle::Order &Battle::CurrentAttack() const {
+	assert(attackCursor >= 0 && attackCursor < int(attackOrder.size()));
+	return attackOrder[attackCursor];
+}
+
+AttackChoice &Battle::CurrentAttackAttackChoice() {
+	return CurrentAttack().GetAttackChoice(*this);
+}
+
+void Battle::ClearAllAttacks() {
+	attackCursor = -1;
+	activeHero = -1;
+	for (int i(0); i < NumHeroes(); ++i) {
+		HeroAt(i).GetAttackChoice() = AttackChoice(this);
+	}
+	for (int i(0); i < NumMonsters(); ++i) {
+		MonsterAt(i).GetAttackChoice() = AttackChoice(this);
+	}
+	GetCapsule().GetAttackChoice() = AttackChoice(this);
+	attackOrder.clear();
+}
+
+
+void Battle::DecideMonsterAttack(Monster &m) {
+	AttackChoice &ac(m.GetAttackChoice());
+	TargetSelection &ts(ac.Selection());
+	ac.Reset();
+	int target(rand() % NumHeroes());
+	while (!HeroAlive(target)) {
+		target = rand() % NumHeroes();
+	}
+	ac.SetType(AttackChoice::SWORD);
+	ts.SelectHeroes();
+	ts.SetSingle();
+	ts.Select(target);
+}
+
+void Battle::DecideCapsuleAttack() {
+	AttackChoice &ac(GetCapsule().GetAttackChoice());
+	TargetSelection &ts(ac.Selection());
+	ac.Reset();
+	int target(rand() % NumMonsters());
+	while (!MonsterAlive(target)) {
+		target = rand() % NumMonsters();
+	}
+	ac.SetType(AttackChoice::SWORD);
+	ts.SelectMonsters();
+	ts.SetSingle();
+	ts.Select(target);
+}
+
+void Battle::CalculateDamage(const Stats &attackerStats, TargetSelection &ts) const {
+	bool hitSome(false);
+	if (ts.TargetsMonsters()) {
+		for (int i(0); i < MaxMonsters(); ++i) {
+			if (ts.IsSelected(i)) {
+				if (MonsterAt(i).Health() > 0) {
+					const Stats &defenderStats(MonsterAt(i).GetStats());
+					Uint16 damage(CalculateDamage(attackerStats, defenderStats));
+					ts.SetBad(i, damage);
+					hitSome = true;
+				} else {
+					ts.Unselect(i);
+				}
+			}
+		}
+		if (hitSome) return;
+		for (int i(0); i < MaxMonsters(); ++i) {
+			if (MonsterAt(i).Health() > 0) {
+				const Stats &defenderStats(MonsterAt(i).GetStats());
+				Uint16 damage(CalculateDamage(attackerStats, defenderStats));
+				ts.SetBad(i, damage);
+				break;
+			}
+		}
+	} else {
+		for (int i(0); i < NumHeroes(); ++i) {
+			if (ts.IsSelected(i)) {
+				if (HeroAt(i).Health() > 0) {
+					const Stats &defenderStats(HeroAt(i).GetStats());
+					Uint16 damage(CalculateDamage(attackerStats, defenderStats));
+					ts.SetBad(i, damage);
+					hitSome = true;
+				} else {
+					ts.Unselect(i);
+				}
+			}
+		}
+		if (hitSome) return;
+		for (int i(0); i < NumHeroes(); ++i) {
+			if (HeroAt(i).Health() > 0) {
+				const Stats &defenderStats(HeroAt(i).GetStats());
+				Uint16 damage(CalculateDamage(attackerStats, defenderStats));
+				ts.SetBad(i, damage);
+				break;
+			}
+		}
+	}
+}
+
+Uint16 Battle::CalculateDamage(const Stats &attacker, const Stats &defender) const {
+	return attacker.Attack() / 2 - defender.Defense() / 4;
+}
+
+
+bool Battle::Victory() const {
+	for (int i(0); i < NumMonsters(); ++i) {
+		if (MonsterAlive(i)) return false;
+	}
+	return true;
+}
+
+bool Battle::Defeat() const {
+	for (int i(0); i < NumHeroes(); ++i) {
+		if (HeroAlive(i)) return false;
+	}
+	return true;
+}
+
+}