isleward/src/server/components/dialogue.js

module.exports = {
	type: 'dialogue',

	states: {},
	sourceStates: {},

	trigger: null,

	init: function (blueprint) {
		this.states = blueprint.config;
	},

	destroy: function () {
		if (this.trigger)
			this.trigger.destroyed = true;
	},

	talk: async function (msg) {
		if (!msg)
			return false;

		let target = msg.target;

		if (!target && !msg.targetName)
			return false;

		if (target && !target.id) {
			target = this.obj.instance.objects.objects.find(o => o.id === target);
			if (!target)
				return false;
		} else if (msg.targetName) {
			target = this.obj.instance.objects.objects.find(o => ((o.name) && (o.name.toLowerCase() === msg.targetName.toLowerCase())));
			if (!target)
				return false;
		}

		if (!target.dialogue)
			return false;

		//Auto-discover faction
		if ((target.trade) && (target.trade.faction))
			this.obj.reputation.discoverFaction(target.trade.faction.id);

		let state = await target.dialogue.getState(this.obj, msg.state);
		if (!state) {
			this.obj.syncer.set(true, 'dialogue', 'state', null);
			return false;
		}

		this.obj.syncer.set(true, 'dialogue', 'state', state);
	},

	stopTalk: function () {
		this.obj.syncer.set(true, 'dialogue', 'state', null);
	},

	/* eslint-disable-next-line max-lines-per-function */
	getState: async function (sourceObj, state = 1) {
		let result = null;
		if ((state + '').indexOf('.') > -1) {
			let config = this.states[(state + '').split('.')[0]];
			if (!config)
				return false;

			let goto = (config.options[state] || {}).goto;
			if (goto instanceof Array) {
				let gotos = [];
				goto.forEach(function (g) {
					let rolls = (g.chance * 100) || 100;
					for (let i = 0; i < rolls; i++) 
						gotos.push(g.number);
				});

				state = gotos[~~(Math.random() * gotos.length)];
			} else
				state = goto;
		}

		this.sourceStates[sourceObj.id] = state;

		if (!this.states)
			return null;

		let stateConfig = this.states[state];
		if (!stateConfig)
			return null;

		let useMsg = stateConfig.msg;
		if (stateConfig.cpn) {
			let cpn = sourceObj[stateConfig.cpn];
			let newArgs = extend([], stateConfig.args);
			newArgs.push(this.obj);
			result = cpn[stateConfig.method].apply(cpn, newArgs);

			if (stateConfig.goto) {
				if (result)
					return await this.getState(sourceObj, stateConfig.goto.success);

				return await this.getState(sourceObj, stateConfig.goto.failure);
			} 
			if (result) {
				useMsg = extend([], useMsg);
				useMsg[0].msg = result;
			} else
				return null;
		} else if (stateConfig.method) {
			let methodResult = await stateConfig.method.call(this.obj, sourceObj);
			if (methodResult) {
				useMsg = extend([], useMsg);
				useMsg[0].msg = methodResult;
			}

			if (!useMsg)
				return;
		}

		result = {
			id: this.obj.id,
			msg: null,
			from: this.obj.name,
			options: []
		};

		if (useMsg instanceof Array) {
			let msgs = [];
			useMsg.forEach(function (m, i) {
				let rolls = (m.chance * 100) || 100;
				for (let j = 0; j < rolls; j++) {
					msgs.push({
						msg: m,
						index: i
					});
				}
			});

			let pick = msgs[~~(Math.random() * msgs.length)];

			result.msg = pick.msg.msg;
			result.options = useMsg[pick.index].options;
		} else {
			result.msg = useMsg;
			result.options = stateConfig.options;
		}

		if (!(result.options instanceof Array)) {
			if (result.options[0] === '$')
				result.options = this.states[result.options.replace('$', '')].options;

			result.options = Object.keys(result.options);
		}

		result.options = result.options
			.map(function (o) {
				let gotoState = this.states[(o + '').split('.')[0]];
				let picked = gotoState.options[o];

				if (!picked)
					return null;
				else if (picked.prereq) {
					let doesConform = picked.prereq(sourceObj);
					if (!doesConform)
						return null;
				}

				return {
					id: o,
					msg: picked.msg
				};
			}, this)
			.filter(o => !!o);

		result.options.push({
			msg: 'Goodbye',
			id: 999
		});

		return result;
	},

	simplify: function (self) {
		return {
			type: 'dialogue'
		};
	},

	//These don't belong here, but I can't figure out where to put them right now
	//They are actions that can be performed while chatting with someone
	teleport: function (msg) {
		this.obj.syncer.set(true, 'dialogue', 'state', null);

		let portal = extend({}, require('./portal'), msg);
		portal.collisionEnter(this.obj);
	},

	getItem: function (msg, source) {
		let inventory = this.obj.inventory;
		let exists = inventory.items.find(i => (i.name === msg.item.name));
		if (!exists) {
			inventory.getItem(msg.item);
			return msg.successMsg || false;
		} return msg.existsMsg || false;
	}
};