Attacks are now pending

common/utilities.js

@@ -13,7 +13,9 @@ let excluded = [ //messages that should not be logged
 	'Not enough time has passed',
 
 	'Profile sent',
-	'Ladder sent'
+	'Ladder sent',
+//	'attacking',
+//	'idle'
 ];
 
 const log = (msg, ...args) => {

public/news/2019-05-29-01.md

@@ -14,7 +14,13 @@ The plan is this:
 * The chance of success is determined by the ratio of each side's combatant strength.
 * Recruits have a strength equal to 0.25 times that of a soldier.
 * On a success, you steal 10% of the target's gold. On a failure, you steal 2% of the target's gold.
-* The attacking force will lose a percentage, rounded down, of their units - 5% on a success, 10% on a failure.
+* The attacking force will lose a percentage, rounded down, of their units - 5% on a success, 10% on a failure (edit: excluding the first 10 units).
 
 All of these numbers can be adjusted later, but this is the initial gameplan for combat.
 
+Edit: More aspects that I'd like to ensure are:
+
+* If the server resets (which happens alot) combat still progresses as expected.
+* All combat is logged and presented to the player.
+* You can only attack one person at a time.
+

server/combat.js

@@ -5,10 +5,99 @@ require('dotenv').config();
 let { log } = require('../common/utilities.js');
 
 const attackRequest = (connection) => (req, res) => {
-	res.status(400).write(log('Not yet implemented'));
+	//verify the attacker's credentials
+	let query = 'SELECT accountId FROM sessions WHERE accountId IN (SELECT id FROM accounts WHERE username = ?) AND token = ?;';
+	connection.query(query, [req.body.attacker, req.body.token], (err, results) => {
+		if (err) throw err;
+
+		if (results.length !== 1) {
+			res.status(400).write(log('Invalid attack credentials', req.body.attacker, req.body.defender, req.body.token));
 			res.end();
+			return;
+		}
+
+		let attackerId = results[0].accountId;
+
+		//verify that the defender exists
+		let query = 'SELECT id FROM accounts WHERE username = ?;';
+		connection.query(query, [req.body.defender], (err, results) => {
+			if (err) throw err;
+
+			if (results.length !== 1) {
+				res.status(400).write(log('Invalid defender credentials', req.body.attacker, req.body.defender));
+				res.end();
+				return;
+			}
+
+			let defenderId = results[0].id;
+
+			//verify that the attacker has enough soldiers
+			let query = 'SELECT soldiers FROM profiles WHERE accountId = ?;';
+			connection.query(query, [attackerId], (err, results) => {
+				if (err) throw err;
+
+				if (results[0].soldiers <= 0) {
+					res.status(400).write(log('Not enough soldiers', req.body.attacker, req.body.defender, results[0].soldiers));
+					res.end();
+					return;
+				}
+
+				let attackingUnits = results[0].soldiers;
+
+				//verify that the attacker is not already attacking someone
+				isAttacking(connection, req.body.attacker, (isAttacking) => {
+					if (isAttacking) {
+						res.status(400).write(log('You are already attacking someone', req.body.attacker, req.body.defender));
+						res.end();
+						return;
+					}
+
+					//create the pending attack value
+					let query = 'INSERT INTO pendingCombat (eventTime, attackerId, defenderId, attackingUnits) VALUES (DATE_ADD(CURRENT_TIMESTAMP(), INTERVAL 10 * ? SECOND), ?, ?, ?);';
+					connection.query(query, [attackingUnits, attackerId, defenderId, attackingUnits], (err) => {
+						if (err) throw err;
+
+						res.status(200).write(log(`Your soldiers are on their way to attack ${req.body.defender}`, req.body.attacker, req.body.defender));
+						res.end();
+					});
+				});
+			});
+		});
+	});
+}
+
+const attackStatusRequest = (connection) => (req, res) => {
+	isAttacking(connection, req.body.username, (isAttacking) => {
+		res.status(200).write(log(isAttacking ? 'attacking' : 'idle', req.body.username));
+		res.end();
+	});
+}
+
+const isAttacking = (connection, username, cb) => {
+	let query = 'SELECT * FROM pendingCombat WHERE attackerId IN (SELECT id FROM accounts WHERE username = ?);';
+	connection.query(query, [username], (err, results) => {
+		if (err) throw err;
+
+		return cb(results.length !== 0);
+	});
 }
 
 module.exports = {
-	attackRequest: attackRequest
+	attackRequest: attackRequest,
+	attackStatusRequest: attackStatusRequest
 }
+
+/*
+> You can attack another player using your soldiers (it doesn't work without soldiers).
+* Doing so takes time, up to 10 seconds for every soldier you have.
+* Combat takes place at the end of the time delay, at which point you can attack people again (after reloading the page).
+> While attacking, you are undefended.
+* While undefended, your recruits act as combatants, otherwise your soldiers do.
+* The chance of success is determined by the ratio of each side's combatant strength.
+* Recruits have a strength equal to 0.25 times that of a soldier.
+* On a success, you steal 10% of the target's gold. On a failure, you steal 2% of the target's gold.
+* The attacking force will lose a percentage, rounded down, of their units - 5% on a success, 10% on a failure (edit: excluding the first 10 units).
+* If the server resets (which happens alot) combat still progresses as expected.
+* All combat is logged and presented to the player.
+*/
+

server/index.js

@@ -42,6 +42,7 @@ profiles.runGoldTick(connection);
 
 let combat = require('./combat.js');
 app.post('/attackrequest', combat.attackRequest(connection));
+app.post('/attackstatusrequest', combat.attackStatusRequest(connection));
 
 //static directories
 app.use('/styles', express.static(path.resolve(__dirname + '/../public/styles')) );

sql/create_database_structure.sql

@@ -55,3 +55,41 @@ CREATE TABLE IF NOT EXISTS profiles (
 
 	CONSTRAINT FOREIGN KEY fk_accountId(accountId) REFERENCES accounts(id) ON UPDATE CASCADE ON DELETE CASCADE
 );
+
+#combat system
+CREATE TABLE IF NOT EXISTS pendingCombat (
+	id INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY UNIQUE,
+	td TIMESTAMP DEFAULT CURRENT_TIMESTAMP(),
+
+	eventTime TIMESTAMP,
+
+	attackerId INTEGER UNSIGNED,
+	defenderId INTEGER UNSIGNED,
+	attackingUnits INTEGER UNSIGNED,
+
+	CONSTRAINT FOREIGN KEY fk_attackerId(attackerId) REFERENCES accounts(id) ON UPDATE CASCADE ON DELETE CASCADE,
+	CONSTRAINT FOREIGN KEY fk_defenderId(defenderId) REFERENCES accounts(id) ON UPDATE CASCADE ON DELETE CASCADE
+);
+
+CREATE TABLE IF NOT EXISTS pastCombat (
+	id INTEGER UNSIGNED AUTO_INCREMENT PRIMARY KEY UNIQUE,
+	td TIMESTAMP DEFAULT CURRENT_TIMESTAMP(),
+
+	eventTime TIMESTAMP,
+
+	attackerId INTEGER UNSIGNED,
+	defenderId INTEGER UNSIGNED,
+	attackingUnits INTEGER UNSIGNED,
+	defindingUnits INTEGER UNSIGNED,
+
+	undefended BOOLEAN,
+
+	victor ENUM ('attacker', 'defender'),
+
+	spoilsGold INTEGER,
+
+	casualtiesVictor INTEGER,
+
+	CONSTRAINT FOREIGN KEY fk_attackerId(attackerId) REFERENCES accounts(id) ON UPDATE CASCADE ON DELETE CASCADE,
+	CONSTRAINT FOREIGN KEY fk_defenderId(defenderId) REFERENCES accounts(id) ON UPDATE CASCADE ON DELETE CASCADE
+);

src/components/pages/profile.jsx

@@ -218,7 +218,7 @@ class Profile extends React.Component {
 				<div className='row'>
 					<p className='col'>Recruits:</p>
 					<p className='col'>{this.state.recruits}</p>
-					<AttackButton className='col' style={{flex: '2 1 1.5%'}} setWarning={this.setWarning.bind(this)} attacker={this.props.username} defender={this.state.username} />
+					<AttackButton className='col' style={{flex: '2 1 1.5%'}} setWarning={this.setWarning.bind(this)} attacker={this.props.username} defender={this.state.username} token={this.props.token} />
 				</div>
 
 				<div className='row'>

src/components/panels/attack_button.jsx

@@ -8,15 +8,23 @@ class AttackButton extends React.Component {
 	constructor(props) {
 		super(props);
 		this.state = {
-			//
+			message: ''
 		};
+
+		this.sendAttackingStatusRequest();
 	}
 
 	render() {
+		if (this.state.message !== '') {
+			return (
+				<p>{this.state.message}</p>
+			);
+		} else {
 			return (
 				<button className={this.props.className} style={this.props.style} onClick={this.sendAttackRequest.bind(this)} disabled={this.props.disabled}>Attack</button>
 			);
 		}
+	}
 
 	sendAttackRequest() {
 		//build the XHR
@@ -26,7 +34,7 @@ class AttackButton extends React.Component {
 		xhr.onreadystatechange = () => {
 			if (xhr.readyState === 4) {
 				if (xhr.status === 200) {
-					//DO NOTHING
+					this.setState({message: xhr.responseText});
 				} else if (xhr.status === 400) {
 					if (this.props.setWarning) {
 						this.props.setWarning(xhr.responseText);
@@ -38,7 +46,8 @@ class AttackButton extends React.Component {
 		xhr.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
 		xhr.send(JSON.stringify({
 			attacker: this.props.attacker,
-			defender: this.props.defender
+			defender: this.props.defender,
+			token: this.props.token
 		}));
 
 		if (this.props.onClick) {
@@ -47,6 +56,26 @@ class AttackButton extends React.Component {
 
 		this.props.setDisabled(true);
 	}
+
+	sendAttackingStatusRequest() {
+		let xhr = new XMLHttpRequest();
+		xhr.open('POST', '/attackstatusrequest', true);
+
+		xhr.onreadystatechange = () => {
+			if (xhr.readyState === 4) {
+				if (xhr.status === 200) {
+					if (xhr.responseText === 'attacking') {
+						this.props.setDisabled(true);
+					}
+				}
+			}
+		}
+
+		xhr.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
+		xhr.send(JSON.stringify({
+			username: this.props.attacker
+		}));
+	}
 };
 
 AttackButton.propTypes = {
@@ -56,6 +85,7 @@ AttackButton.propTypes = {
 	setWarning: PropTypes.func,
 	attacker: PropTypes.string.isRequired,
 	defender: PropTypes.string.isRequired,
+	token: PropTypes.number.isRequired,
 
 	disabled: PropTypes.bool.isRequired,
 	setDisabled: PropTypes.func.isRequired

src/reducers/combat.js

@@ -1,7 +1,7 @@
 import { SET_ATTACK_DISABLED } from '../actions/combat.js';
 
 const initialStore = {
-	attackDisabled: true
+	attackDisabled: false
 };
 
 export function combatReducer(store = initialStore, action) {