isleward/src/server/components/stats.js

define([
	'config/animations',
	'config/loginRewards',
	'config/classes'
], function (
	animations,
	loginRewards,
	classes
) {
	var baseStats = {
		mana: 20,
		manaMax: 20,

		manaReservePercent: 0,

		hp: 5,
		hpMax: 5,
		xpTotal: 0,
		xp: 0,
		xpMax: 0,
		level: 1,
		str: 0,
		int: 0,
		dex: 0,
		magicFind: 0,
		itemQuantity: 0,
		regenHp: 0,
		regenMana: 5,
		addCritChance: 0,
		addCritMultiplier: 0,
		critChance: 5,
		critMultiplier: 150,
		armor: 0,
		dmgPercent: 0,
		vit: 0,

		blockAttackChance: 0,
		blockSpellChance: 0,

		attackSpeed: 0,
		castSpeed: 0,

		elementArcanePercent: 0,
		elementFrostPercent: 0,
		elementFirePercent: 0,
		elementHolyPercent: 0,
		elementPoisonPercent: 0,

		elementArcaneResist: 0,
		elementFrostResist: 0,
		elementFireResist: 0,
		elementHolyResist: 0,
		elementPoisonResist: 0,

		elementAllResist: 0,

		sprintChance: 0,

		xpIncrease: 0,

		//Fishing stats
		catchChance: 0,
		catchSpeed: 0,
		fishRarity: 0,
		fishWeight: 0,
		fishItems: 0
	};

	return {
		type: 'stats',

		values: baseStats,
		originalValues: null,

		vitScale: 10,

		syncer: null,

		stats: {
			logins: 0,
			played: 0,
			lastLogin: null,
			loginStreak: 0,
			mobKillStreaks: {}
		},

		dead: false,

		init: function (blueprint, isTransfer) {
			this.syncer = this.obj.instance.syncer;

			var values = (blueprint || {}).values || {};
			for (var v in values) {
				this.values[v] = values[v];
			}

			var stats = (blueprint || {}).stats || {};
			for (var v in stats) {
				this.stats[v] = stats[v];
			}

			this.calcXpMax();

			if (blueprint)
				delete blueprint.stats;
		},

		resetHp: function () {
			var values = this.values;
			values.hp = values.hpMax;

			this.obj.syncer.setObject(false, 'stats', 'values', 'hp', values.hp);
		},

		update: function () {
			if (((this.obj.mob) && (!this.obj.follower)) || (this.dead))
				return;

			var values = this.values;

			var manaMax = values.manaMax;
			manaMax -= (manaMax * values.manaReservePercent);

			var regen = {
				success: true
			};
			this.obj.fireEvent('beforeRegen', regen);
			if (!regen.success)
				return;

			var isInCombat = (this.obj.aggro.list.length > 0);
			if (this.obj.follower) {
				isInCombat = (this.obj.follower.master.aggro.list.length > 0);
				if (isInCombat)
					return;
			}

			var regenHp = 0;
			var regenMana = 0;

			regenMana = values.regenMana / 50;

			if (!isInCombat)
				regenHp = Math.max(values.hpMax / 112, values.regenHp * 0.2);
			else
				regenHp = values.regenHp * 0.2;

			if (values.hp < values.hpMax) {
				values.hp += regenHp;
				this.obj.syncer.setObject(false, 'stats', 'values', 'hp', this.values.hp);
			}

			if (values.hp > values.hpMax) {
				values.hp = values.hpMax;
				this.obj.syncer.setObject(false, 'stats', 'values', 'hp', values.hp);
			}

			if (values.mana < manaMax) {
				values.mana += regenMana;
				//Show others what mana is?
				var onlySelf = true;
				if (this.obj.player)
					onlySelf = false;
				this.obj.syncer.setObject(onlySelf, 'stats', 'values', 'mana', values.mana);
			}

			if (values.mana > manaMax) {
				values.mana = manaMax;
				if (this.obj.player)
					onlySelf = false;
				this.obj.syncer.setObject(onlySelf, 'stats', 'values', 'mana', values.mana);
			}
		},

		addStat: function (stat, value) {
			if (['lvlRequire', 'allAttributes'].indexOf(stat) == -1)
				this.values[stat] += value;

			var sendOnlyToSelf = (['hp', 'hpMax', 'mana', 'manaMax', 'vit'].indexOf(stat) == -1);

			this.obj.syncer.setObject(sendOnlyToSelf, 'stats', 'values', stat, this.values[stat]);

			if (stat == 'addCritChance') {
				this.values.critChance += (0.05 * value);
				this.obj.syncer.setObject(true, 'stats', 'values', 'critChance', this.values.critChance);
			} else if (stat == 'addCritMultiplier') {
				this.values.critMultiplier += value;
				this.obj.syncer.setObject(true, 'stats', 'values', 'critMultiplier', this.values.critMultiplier);
			} else if (stat == 'vit') {
				this.values.hpMax += (value * this.vitScale);
				this.obj.syncer.setObject(true, 'stats', 'values', 'hpMax', this.values.hpMax);
				this.obj.syncer.setObject(false, 'stats', 'values', 'hpMax', this.values.hpMax);
			} else if (stat == 'allAttributes') {
				['int', 'str', 'dex'].forEach(function (s) {
					this.values[s] += value;
					this.obj.syncer.setObject(true, 'stats', 'values', s, this.values[s]);
				}, this);
			} else if (stat == 'elementAllResist') {
				['arcane', 'frost', 'fire', 'holy', 'poison'].forEach(function (s) {
					var element = 'element' + (s[0].toUpperCase() + s.substr(1)) + 'Resist';

					this.values[element] += value;
					this.obj.syncer.setObject(true, 'stats', 'values', element, this.values[element]);
				}, this);
			}
		},

		calcXpMax: function () {
			var level = (this.originalValues || this.values).level;
			this.values.xpMax = (level * 5) + ~~(level * 10 * Math.pow(level, 2.2));

			this.obj.syncer.setObject(true, 'stats', 'values', 'xpMax', this.values.xpMax);
		},

		//Source is the object that caused you to gain xp (mostly yourself)
		//Target is the source of the xp (a mob or quest)
		getXp: function (amount, source, target) {
			var obj = this.obj;
			var values = this.values;

			if ((this.originalValues || this.values).level == 20)
				return;

			var xpEvent = {
				source: source,
				target: target,
				amount: amount
			};

			this.obj.fireEvent('beforeGetXp', xpEvent);
			if (xpEvent.amount == 0)
				return;

			amount = ~~(xpEvent.amount * (1 + (values.xpIncrease / 100)));

			values.xpTotal = ~~(values.xpTotal + amount);
			values.xp = ~~(values.xp + amount);

			this.obj.syncer.setObject(true, 'stats', 'values', 'xp', values.xp);

			this.syncer.queue('onGetDamage', {
				id: obj.id,
				event: true,
				text: '+' + amount + ' xp'
			});

			var syncO = {};
			var didLevelUp = false;

			while (values.xp >= values.xpMax) {
				didLevelUp = true;
				values.xp -= values.xpMax;
				this.obj.syncer.setObject(true, 'stats', 'values', 'xp', values.xp);
				if (this.originalValues)
					this.originalValues.level++;
				else
					values.level++;

				if ((this.originalValues || this.values).level == 20)
					values.xp = 0;

				values.hpMax = values.level * 32.7;

				var gainStats = classes.stats[this.obj.class].gainStats;
				for (var s in gainStats) {
					values[s] += gainStats[s];
				}

				this.obj.spellbook.calcDps();

				this.syncer.queue('onGetDamage', {
					id: obj.id,
					event: true,
					text: 'level up'
				});

				syncO.level = (this.originalValues || this.values).level;

				this.calcXpMax();
			}

			if (didLevelUp) {
				var cellContents = obj.instance.physics.getCell(obj.x, obj.y);
				cellContents.forEach(function (c) {
					c.fireEvent('onCellPlayerLevelUp', obj);
				});

				obj.auth.doSave();
			}

			process.send({
				method: 'object',
				serverId: this.obj.serverId,
				obj: syncO
			});

			if (didLevelUp) {
				var maxLevel = this.obj.instance.zone.level[1]
				if (maxLevel < (this.originalValues || values).level)
					this.rescale(maxLevel, false);
				else {
					this.obj.syncer.setObject(true, 'stats', 'values', 'hpMax', values.hpMax);
					this.obj.syncer.setObject(true, 'stats', 'values', 'level', values.level);
					this.obj.syncer.setObject(false, 'stats', 'values', 'hpMax', values.hpMax);
					this.obj.syncer.setObject(false, 'stats', 'values', 'level', values.level);
				}
			}
		},

		kill: function (target) {
			var level = target.stats.values.level;

			//Who should get xp?
			var aggroList = target.aggro.list;
			var hpMax = target.stats.values.hpMax;
			var aLen = aggroList.length;
			for (var i = 0; i < aLen; i++) {
				var a = aggroList[i];
				var dmg = a.damage;
				if (dmg <= 0)
					continue;

				var mult = 1;
				//How many party members contributed
				// Remember, maybe one of the aggro-ees might be a mob too
				var party = a.obj.social ? a.obj.social.party : null;
				if (party) {
					var partySize = aggroList.filter(function (f) {
						return ((a.damage > 0) && (party.indexOf(f.obj.serverId) > -1));
					}).length;
					partySize--;
					mult = (1 + (partySize * 0.1));
				}

				if ((a.obj.stats) && (!a.obj.follower)) {
					//Scale xp by source level so you can't just farm low level mobs (or get boosted on high level mobs).
					//Mobs that are farther then 10 levels from you, give no xp
					//We don't currently do this for quests/herb gathering
					var sourceLevel = a.obj.stats.values.level;
					var levelDelta = level - sourceLevel;
					var amount = level * 10 * mult;
					if (Math.abs(levelDelta) <= 10)
						amount = ~~(((sourceLevel + levelDelta) * 10) * Math.pow(1 - (Math.abs(levelDelta) / 10), 2) * mult);
					else
						amount = 0;

					a.obj.stats.getXp(amount, this.obj, target);
				}

				a.obj.fireEvent('afterKillMob', target);
			}
		},

		die: function (source) {
			this.values.hp = this.values.hpMax;
			this.values.mana = this.values.manaMax;

			this.obj.syncer.setObject(false, 'stats', 'values', 'hp', this.values.hp);
			this.obj.syncer.setObject(false, 'stats', 'values', 'mana', this.values.mana);

			this.syncer.queue('onGetDamage', {
				id: this.obj.id,
				event: true,
				text: 'death'
			});

			this.syncer.queue('onDeath', {
				x: this.obj.x,
				y: this.obj.y,
				source: source.name
			}, [this.obj.serverId]);
		},
		takeDamage: function (damage, threatMult, source) {
			source.fireEvent('beforeDealDamage', damage, this.obj);
			this.obj.fireEvent('beforeTakeDamage', damage, source);

			//Maybe the attacker was stunned?
			if (damage.failed)
				return;

			//Maybe something else killed this mob already?
			if (this.obj.destroyed)
				return;

			var amount = damage.amount;

			if (amount > this.values.hp)
				amount = this.values.hp;

			this.values.hp -= amount;
			var recipients = [];
			if (this.obj.serverId != null)
				recipients.push(this.obj.serverId);
			if (source.serverId != null)
				recipients.push(source.serverId);
			if ((source.follower) && (source.follower.master.serverId))
				recipients.push(source.follower.master.serverId);
			if ((this.obj.follower) && (this.obj.follower.master.serverId))
				recipients.push(this.obj.follower.master.serverId);

			if (recipients.length > 0) {
				if (!damage.blocked) {
					this.syncer.queue('onGetDamage', {
						id: this.obj.id,
						source: source.id,
						crit: damage.crit,
						amount: amount
					}, recipients);
				} else {
					this.syncer.queue('onGetDamage', {
						id: this.obj.id,
						source: source.id,
						event: true,
						text: 'blocked'
					}, recipients);
				}
			}

			this.obj.aggro.tryEngage(source, amount, threatMult);

			var died = (this.values.hp <= 0);

			if (died) {
				var death = {
					success: true
				};
				this.obj.fireEvent('beforeDeath', death);

				if (death.success) {
					var deathEvent = {};

					var killSource = source;

					if (source.follower)
						killSource = source.follower.master;

					if (killSource.player)
						killSource.stats.kill(this.obj);

					this.obj.fireEvent('afterDeath', deathEvent);

					if (this.obj.player) {
						this.obj.syncer.setObject(false, 'stats', 'values', 'hp', this.values.hp);
						if (deathEvent.permadeath) {
							this.obj.auth.permadie();

							this.obj.instance.syncer.queue('onGetMessages', {
								messages: {
									class: 'color-red',
									message: `(level ${this.values.level}) ${this.obj.name} has forever left the shores of the living.`
								}
							});

							this.syncer.queue('onPermadeath', {
								source: killSource.name
							}, [this.obj.serverId]);
						} else
							this.values.hp = 0;

						this.obj.player.die(killSource, deathEvent.permadeath);
					} else {
						this.obj.effects.die();
						if (this.obj.spellbook)
							this.obj.spellbook.die();
						this.obj.destroyed = true;

						var deathAnimation = _.getDeepProperty(animations, ['mobs', this.obj.sheetName, this.obj.cell, 'death']);
						if (deathAnimation) {
							this.obj.instance.syncer.queue('onGetObject', {
								x: this.obj.x,
								y: this.obj.y,
								components: [deathAnimation]
							});
						}

						if (this.obj.inventory) {
							var aggroList = this.obj.aggro.list;
							var aLen = aggroList.length;
							for (var i = 0; i < aLen; i++) {
								var a = aggroList[i].obj;

								if (a.serverId == null)
									continue;

								this.obj.inventory.dropBag(a.serverId, killSource);
							}
						}
					}
				}
			} else {
				source.aggro.tryEngage(this.obj, 0);
				this.obj.syncer.setObject(false, 'stats', 'values', 'hp', this.values.hp);
			}

			if (!damage.noEvents)
				source.fireEvent('afterDealDamage', damage, this.obj);
		},

		getHp: function (heal, source) {
			var amount = heal.amount;
			if (amount == 0)
				return;

			var threatMult = heal.threatMult;
			if (!heal.hasOwnProperty('threatMult'))
				threatMult = 1;

			var values = this.values;
			var hpMax = values.hpMax;

			if (values.hp >= hpMax)
				return;

			if (hpMax - values.hp < amount)
				amount = hpMax - values.hp;

			values.hp += amount;
			if (values.hp > hpMax)
				values.hp = hpMax;

			var recipients = [];
			if (this.obj.serverId != null)
				recipients.push(this.obj.serverId);
			if (source.serverId != null)
				recipients.push(source.serverId);
			if (recipients.length > 0) {
				this.syncer.queue('onGetDamage', {
					id: this.obj.id,
					source: source.id,
					heal: true,
					amount: amount,
					crit: heal.crit
				}, recipients);
			}

			//Add aggro to all our attackers
			var threat = amount * 0.4 * threatMult;
			var aggroList = this.obj.aggro.list;
			var aLen = aggroList.length;
			for (var i = 0; i < aLen; i++) {
				var a = aggroList[i].obj;
				a.aggro.tryEngage(source, threat);
			}

			this.obj.syncer.setObject(false, 'stats', 'values', 'hp', values.hp);
		},

		save: function () {
			if (this.sessionDuration) {
				this.stats.played = ~~(this.stats.played + this.sessionDuration);
				delete this.sessionDuration;
			}

			return {
				type: 'stats',
				values: this.originalValues || this.values,
				stats: this.stats
			};
		},

		simplify: function (self) {
			var values = this.values;

			if (!self) {
				var result = {
					type: 'stats',
					values: {
						hp: values.hp,
						hpMax: values.hpMax,
						mana: values.mana,
						manaMax: values.manaMax,
						level: values.level
					}
				};

				return result
			}

			return {
				type: 'stats',
				values: values,
				stats: this.stats,
				vitScale: this.vitScale
			};
		},

		onLogin: function () {
			var stats = this.stats;

			var scheduler = require('misc/scheduler');
			var time = scheduler.getTime();
			var lastLogin = stats.lastLogin;
			if ((!lastLogin) || (lastLogin.day != time.day)) {
				var daysSkipped = 1;
				if (lastLogin) {
					if (time.day > lastLogin.day)
						daysSkipped = time.day - lastLogin.day;
					else {
						var daysInMonth = scheduler.daysInMonth(lastLogin.month);
						daysSkipped = (daysInMonth - lastLogin.day) + time.day;

						for (var i = lastLogin.month + 1; i < time.month - 1; i++) {
							daysSkipped += scheduler.daysInMonth(i);
						}
					}
				}

				if (daysSkipped == 1) {
					stats.loginStreak++;
					if (stats.loginStreak > 21)
						stats.loginStreak = 21;
				} else {
					stats.loginStreak -= (daysSkipped - 1);
					if (stats.loginStreak < 1)
						stats.loginStreak = 1;
				}

				var mail = this.obj.instance.mail;
				var rewards = loginRewards.generate(stats.loginStreak);
				mail.sendMail(this.obj.name, rewards);
			} else
				this.obj.instance.mail.getMail(this.obj.name);

			stats.lastLogin = time;
		},

		rescale: function (level, isMob) {
			if (level >= (this.originalValues || this.values).level)
				return;

			var sync = this.obj.syncer.setObject.bind(this.obj.syncer);

			var oldHp = this.values.hp;
			var oldXp = this.values.xp;
			var oldXpTotal = this.values.xpTotal;
			var oldXpMax = this.values.xpMax;

			if (!this.originalValues)
				this.originalValues = extend(true, {}, this.values);

			var oldValues = this.values;
			var newValues = extend(true, {}, baseStats);
			this.values = newValues;

			var gainStats = classes.stats[this.obj.class].gainStats;
			for (var s in gainStats) {
				newValues[s] += (gainStats[s] * level);
			}

			newValues.level = level;
			newValues.originalLevel = (this.originalValues || oldValues).level;
			newValues.hpMax = level * 32.7;
			if (isMob)
				newValues.hpMax = ~~(newValues.hpMax * (level / 10));

			newValues.hp = oldHp;
			var resetHp = false;
			if (newValues.hp > newValues.hpMax) {
				resetHp = true;
				newValues.hp = newValues.hpMax;
			}

			newValues.xp = oldXp;
			newValues.xpMax = oldXpMax;
			newValues.xpTotal = oldXpTotal;

			var addStats = this.obj.equipment.rescale(level);
			for (var p in addStats) {
				var statName = p;

				this.addStat(statName, addStats[p]);
			}

			if (resetHp)
				newValues.hp = newValues.hpMax;

			this.obj.spellbook.calcDps();

			var publicStats = [
				'hp',
				'hpMax',
				'mana',
				'manaMax',
				'level'
			];

			for (var p in newValues) {
				sync(true, 'stats', 'values', p, newValues[p]);
				if (publicStats.indexOf(p) > -1)
					sync(false, 'stats', 'values', p, newValues[p]);
			}
		},

		getKillStreakCoefficient: function (mobName) {
			var killStreak = this.stats.mobKillStreaks[mobName];
			if (!killStreak)
				return 1;
			else
				return Math.max(0, (10000 - Math.pow(killStreak, 2)) / 10000);
		},

		events: {
			afterKillMob: function (mob) {
				var mobKillStreaks = this.stats.mobKillStreaks;
				var mobName = mob.name;

				if (!mobKillStreaks[mobName])
					mobKillStreaks.mobName = 0;

				if (mobKillStreaks[mobName] < 100)
					mobKillStreaks[mobName]++;

				for (var p in mobKillStreaks) {
					if (p == mobName)
						continue;

					mobKillStreaks[p]--;
					if (mobKillStreaks[p] <= 0)
						delete mobKillStreaks[p];
				}
			},

			beforeGetXp: function (event) {
				if (!event.target.mob)
					return;

				event.amount *= this.getKillStreakCoefficient(event.target.name);
			},

			beforeGenerateLoot: function (event) {
				if (!event.source.mob)
					return;

				event.chanceMultiplier *= this.getKillStreakCoefficient(event.source.name);
			},

			afterMove: function (event) {
				var mobKillStreaks = this.stats.mobKillStreaks;

				for (var p in mobKillStreaks) {
					mobKillStreaks[p] -= 0.085;
					if (mobKillStreaks[p] <= 0)
						delete mobKillStreaks[p];
				}
			}
		}
	};
});