src/repository/city.ts

   1 import { v4 as uuid } from 'uuid';
   2 import { ERROR_CODE, InsufficientResourceError, NotFoundError } from '../errors';
   3 import {Repository} from './base';
   4 import * as config from '../config';
   5 import { BuildQueue, BuildQueueRepository } from './build-queue';
   6 import { DateTime, Duration } from 'luxon';
   7 import { UnitTrainingQueue, UnitTrainingQueueRepository } from './training-queue';
   8 import { coalesce } from '../lib/util';
   9 import { Building, BuildingRepository } from './buildings';
  10 import { Unit, UnitRepository } from './unit';
  11 import _, { random } from 'lodash';
  12 import { Army, ArmyQueue, ArmyRepository } from './army';
  13
  14 export type City = {
  15         id: string;
  16     owner: string;
  17     totalSpace: number;
  18     usedSpace: number;
  19     gold: number;
  20     ore: number;
  21     logs: number;
  22     bushels: number;
  23     population: number;
  24     soldiers: number;
  25     attackers: number;
  26     defenders: number;
  27     sp_attackers: number;
  28     sp_defenders: number;
  29     farms: number;
  30     barracks: number;
  31     special_attacker_trainer: number;
  32     special_defender_trainer: number;
  33 }
  34
  35 export type CityWithLocation = {
  36     sector_id: number;
  37     location_x: number;
  38     location_y: number;
  39 } & City;
  40
  41 export class CityRepository extends Repository<City> {
  42     buildQueue: BuildQueueRepository;
  43     buildingRepository: BuildingRepository;
  44     unitRepository: UnitRepository;
  45     unitTrainigQueue: UnitTrainingQueueRepository;
  46     armyRepository: ArmyRepository;
  47
  48     constructor() {
  49         super('cities');
  50         this.buildingRepository = new BuildingRepository();
  51         this.buildQueue = new BuildQueueRepository();
  52         this.unitRepository = new UnitRepository();
  53         this.unitTrainigQueue = new UnitTrainingQueueRepository();
  54         this.armyRepository = new ArmyRepository();
  55     }
  56
  57     async create(accountId: string): Promise<CityWithLocation> {
  58         const info: City = {
  59             id: uuid(),
  60             owner: accountId,
  61             totalSpace: 100,
  62             usedSpace: 0,
  63             gold: 10000,
  64             ore: 10000,
  65             logs: 10000,
  66             bushels: 10000,
  67             population: 1000,
  68             soldiers: 100,
  69             attackers: 0,
  70             defenders: 0,
  71             sp_attackers: 0,
  72             sp_defenders: 0,
  73             farms: 0,
  74             barracks: 0,
  75             special_attacker_trainer: 0,
  76             special_defender_trainer: 0,
  77         };
  78
  79         await this.Insert(info);
  80
  81         // placement can happen randomly
  82         const availableSectors = config.AVAILABLE_SECTORS;
  83         const sector = _.random(1, availableSectors);
  84
  85         const location = {
  86             sector_id: await this.getAvailableSector(),
  87             location_x: random(0, 25),
  88             location_y: random(0, 25)
  89         }
  90
  91         await this.db.raw('insert into locations (sector_id, city_id, location_x, location_y) values (?, ?, ?, ?)', [
  92             location.sector_id,
  93             info.id,
  94             location.location_x,
  95             location.location_y
  96         ]);
  97
  98         return {
  99             ...info,
 100             sector_id: location.sector_id,
 101             location_x: location.location_x,
 102             location_y: location.location_y
 103         };
 104     }
 105
 106     async getAvailableSector(): Promise<number> {
 107         // figure out which sectors have space (40% fill rate at 25x25);
 108         const availableSectors = await this.db.raw<{count: Number, sector_id: number}[]>(`select count(sector_id) as count, sector_id from locations group by sector_id`);
 109         const sample = _.sample(availableSectors.filter(sector => sector.count < 250)) as {count: number, sector_id: number};
 110
 111         if(!sample) {
 112             return _.sortBy(availableSectors, 'sector_id').pop().sector_id+1;
 113         }
 114
 115         return sample.sector_id;
 116     }
 117
 118     async save(city: Partial<City>) {
 119         await this.Save(city, {id: city.id});
 120         return city;
 121     }
 122
 123     async findById(cityId: string): Promise<CityWithLocation> {
 124         const city = await this.db.raw<CityWithLocation[]>(`select c.*, l.sector_id, l.location_x, l.location_y from cities c
 125         join locations l on c.id = l.city_id
 126         where id = ? limit 1`, [cityId]);
 127
 128         if(!city) {
 129             throw new NotFoundError('User has no city', ERROR_CODE.NO_CITY);
 130         }
 131
 132         return city.pop();
 133
 134     }
 135
 136     async getUsersCity(owner: string): Promise<CityWithLocation> {
 137         const city = await this.db.raw<CityWithLocation[]>(`select c.*, l.sector_id, l.location_x, l.location_y from cities c
 138         join locations l on c.id = l.city_id
 139         where owner = ? limit 1`, [owner]);
 140
 141         if(!city) {
 142             throw new NotFoundError('User has no city', ERROR_CODE.NO_CITY);
 143         }
 144
 145         return city.pop();
 146     }
 147
 148     findAllInSector(sector_id: number): Promise<CityWithLocation[]> {
 149         return this.db.raw<CityWithLocation[]>(`select c.*, l.sector_id, l.location_x, l.location_y from cities c
 150 join locations l on c.id = l.city_id
 151 where l.sector_id = ?`, [sector_id]);
 152     }
 153
 154     async buildBuilding(building: Building, amount: number, city: City): Promise<BuildQueue> {
 155         const freeSpace = city.totalSpace - city.usedSpace;
 156
 157         if(freeSpace < building.land) {
 158             throw new InsufficientResourceError('land', building.land, freeSpace);
 159         }
 160
 161         if(city.gold < building.gold) {
 162             throw new InsufficientResourceError('gold', building.gold, city.gold);
 163         }
 164
 165         if(city.ore < building.ore) {
 166             throw new InsufficientResourceError('ore', building.ore, city.ore);
 167         }
 168
 169         if(city.logs < building.logs) {
 170             throw new InsufficientResourceError('logs', building.logs, city.logs);
 171         }
 172
 173         city.usedSpace += (building.land * amount);
 174         city.gold -= (building.gold * amount);
 175         city.ore -= (building.ore * amount);
 176         city.logs -= (building.logs * amount);
 177
 178         await this.save(city);
 179
 180         const due = Duration.fromObject({ hours: building.time});
 181         const queue = await this.buildQueue.create(
 182             city.owner,
 183             DateTime.now().plus({ milliseconds: due.as('milliseconds') }).toMillis(),
 184             building.slug,
 185             amount
 186         );
 187
 188         return queue;
 189     }
 190
 191     /**
 192      * Returns the distance in seconds
 193      * @param city1
 194      * @param city2
 195      */
 196     distanceInSeconds(city1: CityWithLocation, city2: CityWithLocation): number {
 197         return this.distanceInHours(city1, city2) * 60 * 60;
 198     }
 199
 200     distanceInHours(city1: CityWithLocation, city2: CityWithLocation): number {
 201         const dist = Math.sqrt(
 202             Math.pow((city2.location_x - city1.location_x), 2)
 203             +
 204             Math.pow((city2.location_y - city1.location_y), 2)
 205         );
 206
 207         return _.round(dist/4, 2);
 208
 209     }
 210
 211     async train(unit: Unit, amount: number, city: City): Promise<UnitTrainingQueue> {
 212         if(city.gold < unit.gold) {
 213             throw new InsufficientResourceError('gold', unit.gold, city.gold);
 214         }
 215
 216         if(city.bushels < unit.bushels) {
 217             throw new InsufficientResourceError('bushels', unit.bushels, city.bushels);
 218         }
 219
 220         if(city.population < coalesce(unit.population, 0)) {
 221             throw new InsufficientResourceError('population', unit.population, city.population);
 222         }
 223
 224         if(city.soldiers < coalesce(unit.soldiers, 0)) {
 225             throw new InsufficientResourceError('soldiers', unit.soldiers, city.soldiers);
 226         }
 227
 228         if(city.attackers < coalesce(unit.attackers, 0)) {
 229             throw new InsufficientResourceError('attackers', unit.attackers, city.attackers);
 230         }
 231
 232         if(city.defenders < coalesce(unit.defenders, 0)) {
 233             throw new InsufficientResourceError('defenders', unit.defenders, city.defenders);
 234         }
 235
 236         // validate that they have enough of the buildings to support this
 237
 238         // ok they have everything, lets update their city
 239         // and create the entry in the training queue
 240
 241         city.gold -= unit.gold * amount;
 242         city.bushels -= unit.bushels * amount;
 243         city.population -= coalesce(unit.population, 0) * amount;
 244         city.soldiers -= coalesce(unit.soldiers, 0) * amount;
 245         city.attackers -= coalesce(unit.attackers, 0) * amount;
 246         city.defenders -= coalesce(unit.defenders, 0) * amount;
 247
 248         await this.save(city);
 249
 250         const due = Duration.fromObject({ hours: unit.time});
 251         const queue = await this.unitTrainigQueue.create(
 252             city.owner,
 253             DateTime.now().plus({ milliseconds: due.as('milliseconds') }).toMillis(),
 254             unit.slug,
 255             amount
 256         );
 257
 258         return queue;
 259     }
 260
 261     async power(checkUnits: {soldiers: number, attackers: number, defenders: number, sp_attackers: number, sp_defenders: number}): Promise<number> {
 262         const units = _.keyBy(await this.unitRepository.list(), 'slug');
 263         let power = 0;
 264
 265         _.each(checkUnits, (count, slug) => {
 266             try {
 267                 power += units[slug].attack * count;
 268             }
 269             catch(e) {
 270             }
 271         });
 272
 273         return power
 274     }
 275
 276     async attack(attacker: CityWithLocation, attacked: CityWithLocation, army: Army): Promise<ArmyQueue> {
 277         // validate the user has enough of a military!
 278         if(attacker.soldiers < army.soldiers) {
 279             throw new InsufficientResourceError('soldiers', army.soldiers, attacker.soldiers);
 280         }
 281         if(attacker.attackers < army.attackers) {
 282             throw new InsufficientResourceError('attackers', army.attackers, attacker.attackers);
 283         }
 284         if(attacker.defenders < army.defenders) {
 285             throw new InsufficientResourceError('defenders', army.defenders, attacker.defenders);
 286         }
 287         if(attacker.sp_attackers < army.sp_attackers) {
 288             throw new InsufficientResourceError('sp_attackers', army.sp_attackers, attacker.sp_attackers);
 289         }
 290         if(attacker.sp_defenders < army.sp_defenders) {
 291             throw new InsufficientResourceError('sp_defenders', army.sp_defenders, attacker.sp_defenders);
 292         }
 293
 294         // ok, it's a real army lets send it off!
 295         attacker.soldiers -= army.soldiers;
 296         attacker.attackers -= army.attackers;
 297         attacker.defenders -= army.defenders;
 298         attacker.sp_attackers -= army.sp_attackers;
 299         attacker.sp_defenders -= army.sp_defenders;
 300
 301         await this.save(attacker);
 302
 303         return this.armyRepository.create(
 304             attacker.owner,
 305             attacker,
 306             attacked,
 307             army,
 308             this.distanceInSeconds(attacker, attacked)
 309         );
 310     }
 311
 312     async getBuildQueues(owner: string): Promise<BuildQueue[]> {
 313         return this.buildQueue.list(owner);
 314     }
 315
 316     async getUnitTrainingQueues(owner: string): Promise<UnitTrainingQueue[]> {
 317         return this.unitTrainigQueue.list(owner);
 318     }
 319 }