Add fights

src/modules/game/game.ts

@@ -25,6 +25,7 @@ import {
 } from "../../services/game/location.js";
 import { getLevel } from "../../services/game/entity.js";
 import {
+    fightEntity,
     getFullItemName,
     getTotalStats,
     type IEntity,
@@ -79,6 +80,10 @@ const registerModuleGame = (
         startConditions: [`${gamePrefix} entity `],
         callbackFunc: onEntity,
     });
+    callbackStore.messageCallbacks.push({
+        startConditions: [`${gamePrefix} fight `],
+        callbackFunc: onFight,
+    });
 };
 
 const onHelp = (_text: string, roomId: string) => {
@@ -97,7 +102,7 @@ const onHelp = (_text: string, roomId: string) => {
             <li><b>!game entities</b> - Shows entities at your location</li>
             <li><b>!game entity {entity}</b> - Shows information about an entity</li>
             <li><b>(WIP) !game talk {entity}</b> - Talk to an entity</li>
-            <li><b>(WIP) !game fight {entity}</b> - Fight an entity</li>
+            <li><b>!game fight {entity}</b> - Fight an entity</li>
             <li><b>(WIP) !game work {action}</b> - Start work</li>
         </ul>`,
     );
@@ -343,4 +348,22 @@ const onEntity = (text: string, roomId: string, sender: string) => {
     onStatusName(roomId, entity.name);
 };
 
+const onFight = (text: string, roomId: string, sender: string) => {
+    const player = getPlayer(sender);
+
+    const entityName = text.replace(`${gamePrefix} entity `, "").trim();
+    if (!existsEntity(entityName)) {
+        client.sendTextMessage(roomId, "No such entity exists");
+        return;
+    }
+
+    const entity = getEntityByName(entityName);
+    if (!entitiesShareLocation(player, entity)) {
+        client.sendTextMessage(roomId, "No such entity in your vicinity");
+        return;
+    }
+
+    fightEntity(client, roomId, player, entity);
+};
+
 export { registerModuleGame };

src/services/game/entity.ts

@@ -1,8 +1,12 @@
 import { getUserNameById } from "../../helpers.js";
 import { state } from "../../store/store.js";
 import {
+    Attack,
+    attackPunch,
+    attacks,
     npcBecky,
     npcs,
+    type IAttack,
     type IEntity,
     type INPC,
     type INPCData,
@@ -16,6 +20,7 @@ import { Race, raceHuman, races, type IRace } from "./structures/races.js";
 import type { ILevel } from "./types.js";
 
 const createPlayer = (name: string): IPlayer => ({
+    isPlayer: true,
     name: name,
     description: "",
     race: Race.HUMAN,
@@ -35,6 +40,7 @@ const createPlayer = (name: string): IPlayer => ({
     stealth: 0,
     charisma: 0,
     lockpicking: 0,
+    attacks: [Attack.PUNCH, Attack.KICK],
 });
 
 const createNpcData = (npc: INPC): INPCData => ({
@@ -43,6 +49,10 @@ const createNpcData = (npc: INPC): INPCData => ({
     dead: false,
 });
 
+const isPlayer = (entity: IEntity): boolean => {
+    return "isPlayer" in entity;
+};
+
 const existsPlayer = (name: string): boolean => {
     return (
         state.game.players.find(
@@ -62,6 +72,12 @@ const existsEntity = (name: string): boolean => {
     return existsPlayer(name) || existsNpc(name);
 };
 
+const getAttack = (id: Attack): IAttack => {
+    const attack = attacks.find((attack) => attack.id === id);
+
+    return attack ? attack : attackPunch;
+};
+
 const getPlayer = (userId: string): IPlayer => {
     return getPlayerByName(getUserNameById(userId));
 };
@@ -176,9 +192,11 @@ const getSpeed = (entity: IEntity) => {
 export {
     createPlayer,
     createNpcData,
+    isPlayer,
     existsPlayer,
     existsNpc,
     existsEntity,
+    getAttack,
     getPlayer,
     getPlayerByName,
     getEntityByName,

src/services/game/game.ts

@@ -0,0 +1,160 @@
+import type { MatrixClient } from "matrix-js-sdk";
+import type {
+    Attack,
+    IEntity,
+    INPC,
+    IPlayer,
+    TFullNPC,
+} from "./structures/entities.js";
+import { locationFarlands } from "./structures/locations.js";
+import { getAttack, getMaxHealth, getNpcData, isPlayer } from "./entity.js";
+import { sleep } from "matrix-js-sdk/lib/utils.js";
+
+const fightEntity = async (
+    client: MatrixClient,
+    roomId: string,
+    attacker: IPlayer | TFullNPC,
+    defender: IPlayer | TFullNPC,
+) => {
+    let attackerAttacks: Attack[] = [];
+    let attackerDamage = 0;
+    let attackerDefense = 0;
+    attacker.inventory.items.forEach((item) => {
+        item.attacks.forEach((attack) => {
+            attackerAttacks.push(attack);
+        });
+        item.stats.forEach((stat) => {
+            attackerDamage += stat.damage;
+            attackerDefense += stat.defense;
+        });
+    });
+    attackerDamage *= 1 + attacker.strength / 10;
+    attackerDefense *= 1 + attacker.strength / 10;
+
+    let defenderAttacks: Attack[] = [];
+    let defenderDamage = 0;
+    let defenderDefense = 0;
+    defender.inventory.items.forEach((item) => {
+        item.attacks.forEach((attack) => {
+            defenderAttacks.push(attack);
+        });
+        item.stats.forEach((stat) => {
+            defenderDamage += stat.damage;
+            defenderDefense += stat.defense;
+        });
+    });
+    defenderDamage *= 1 + defender.strength / 10;
+    defenderDefense *= 1 + defender.strength / 10;
+
+    let winner: IPlayer | TFullNPC | undefined = undefined;
+    let loser: IPlayer | TFullNPC | undefined = undefined;
+
+    while (true) {
+        await sleep(5000);
+
+        const attackerWon = fightRound(
+            client,
+            roomId,
+            attackerAttacks,
+            attackerDamage,
+            defender,
+            defenderDefense,
+        );
+
+        if (attackerWon) {
+            winner = attacker;
+            loser = defender;
+            break;
+        }
+
+        const defenderWon = fightRound(
+            client,
+            roomId,
+            defenderAttacks,
+            defenderDamage,
+            attacker,
+            attackerDefense,
+        );
+
+        if (defenderWon) {
+            winner = defender;
+            loser = attacker;
+            break;
+        }
+    }
+
+    client.sendTextMessage(
+        roomId,
+        `${attacker.name} has won the fight against ${defender.name}!`,
+    );
+
+    if (isPlayer(loser)) {
+        respawnPlayer(client, roomId, loser as IPlayer);
+    } else {
+        const npcData = getNpcData((loser as INPC).id);
+        npcData.dead = true;
+    }
+};
+
+const fightRound = (
+    client: MatrixClient,
+    roomId: string,
+    attackerAttacks: Attack[],
+    attackerDamage: number,
+    defender: IPlayer | TFullNPC,
+    defenderDefense: number,
+): boolean => {
+    const attackerAttack =
+        attackerAttacks[Math.floor(Math.random() * attackerAttacks.length)];
+
+    if (!attackerAttack) {
+        return false;
+    }
+
+    const attackerAttackInfo = getAttack(attackerAttack);
+
+    const attackerAttackDamage =
+        attackerDamage *
+        attackerAttackInfo.damageMultiplier *
+        (0.5 + Math.random() * 0.5);
+
+    defender.health -= attackerAttackDamage;
+
+    if (defender.health <= 0) {
+        const msg = getRandomAttackMessage(
+            defender.health <= -getMaxHealth(defender)
+                ? attackerAttackInfo.messagesOverpower
+                : attackerAttackInfo.messagesDead,
+        );
+        client.sendTextMessage(roomId, msg);
+
+        return true;
+    }
+
+    const msg = getRandomAttackMessage(attackerAttackInfo.messages);
+    client.sendTextMessage(roomId, msg);
+
+    return false;
+};
+
+const respawnPlayer = (
+    client: MatrixClient,
+    roomId: string,
+    player: IPlayer,
+) => {
+    const defaultRespawn = locationFarlands;
+
+    player.location = defaultRespawn.id;
+    player.health = getMaxHealth(player);
+
+    client.sendTextMessage(
+        roomId,
+        `${player.name} has been respawned in ${defaultRespawn.name}`,
+    );
+};
+
+const getRandomAttackMessage = (messages: string[]): string => {
+    return messages[Math.floor(Math.random() * messages.length)] ?? "";
+};
+
+export { fightEntity, fightRound, respawnPlayer, getRandomAttackMessage };

src/services/game/structures/entities.ts

@@ -1,6 +1,7 @@
 import { Location } from "./locations.js";
 import { Race } from "./races.js";
 import type { IInventory } from "../types.js";
+import { DamageType } from "./items.js";
 
 export interface IEntity {
     name: string;
@@ -19,9 +20,11 @@ export interface IEntity {
     stealth: number;
     charisma: number;
     lockpicking: number;
+    attacks: Attack[];
 }
 
 export interface IPlayer extends IEntity {
+    isPlayer: true;
     health: number;
 }
 
@@ -49,6 +52,120 @@ export enum NpcType {
     AGGRESIVE = "AGGRESIVE",
 }
 
+export interface IAttack {
+    id: Attack;
+    damageType: DamageType;
+    damageMultiplier: number;
+    messages: string[];
+    messagesDead: string[];
+    messagesOverpower: string[];
+}
+
+export enum Attack {
+    PUNCH = "PUNCH",
+    CUT = "CUT",
+    STAB = "STAB",
+    KICK = "KICK",
+    STOMP = "STOMP",
+    SIT = "SIT",
+    RIP = "RIP",
+}
+
+export const attackPunch: IAttack = {
+    id: Attack.PUNCH,
+    damageType: DamageType.PHYSICAL,
+    damageMultiplier: 0.5,
+    messages: ["ATTACKER punches DEFENDER"],
+    messagesDead: [
+        "ATTACKER punches DEFENDER to death",
+        "ATTACKER beats DEFENDER to death",
+    ],
+    messagesOverpower: ["ATTACKER punches DEFENDER into mush"],
+};
+
+export const attackCut: IAttack = {
+    id: Attack.CUT,
+    damageType: DamageType.PHYSICAL,
+    damageMultiplier: 1,
+    messages: ["ATTACKER cuts DEFENDER"],
+    messagesDead: [
+        "ATTACKER cuts DEFENDER in half",
+        "ATTACKER cuts DEFENDER's head off",
+        "ATTACKER cuts DEFENDER, instantly killing them",
+    ],
+    messagesOverpower: ["ATTACKER cuts DEFENDER in half"],
+};
+
+export const attackStab: IAttack = {
+    id: Attack.STAB,
+    damageType: DamageType.PHYSICAL,
+    damageMultiplier: 1.5,
+    messages: ["ATTACKER stabs DEFENDER"],
+    messagesDead: [
+        "ATTACKER stabs DEFENDER to death",
+        "ATTACKER stabs DEFENDER, instantly killing them",
+    ],
+    messagesOverpower: ["ATTACKER stabs DEFENDER, instantly killing them"],
+};
+
+export const attackKick: IAttack = {
+    id: Attack.KICK,
+    damageType: DamageType.PHYSICAL,
+    damageMultiplier: 0.75,
+    messages: [
+        "ATTACKER kick DEFENDER",
+        "ATTACKER kick DEFENDER in their face",
+    ],
+    messagesDead: ["ATTACKER kicks DEFENDER to death"],
+    messagesOverpower: ["ATTACKER kicks DEFENDER into mush"],
+};
+
+export const attackStomp: IAttack = {
+    id: Attack.STOMP,
+    damageType: DamageType.PHYSICAL,
+    damageMultiplier: 0.75,
+    messages: [
+        "ATTACKER stomps DEFENDER",
+        "ATTACKER stomps DEFENDER in their face",
+    ],
+    messagesDead: ["ATTACKER stomps DEFENDER to death"],
+    messagesOverpower: [
+        "ATTACKER stomps DEFENDER into mush",
+        "DEFENDER explodes after ATTACKER stomps them into bloody mush",
+    ],
+};
+
+export const attackSit: IAttack = {
+    id: Attack.SIT,
+    damageType: DamageType.PHYSICAL,
+    damageMultiplier: 0.65,
+    messages: ["ATTACKER sits on DEFENDER"],
+    messagesDead: ["ATTACKER sits on DEFENDER and crushes them to death"],
+    messagesOverpower: [
+        "ATTACKER sits on DEFENDER and crushes them into mush and goo",
+        "DEFENDER explodes after ATTACKER sits on them with their full weight",
+    ],
+};
+
+export const attackRip: IAttack = {
+    id: Attack.RIP,
+    damageType: DamageType.PHYSICAL,
+    damageMultiplier: 0.3,
+    messages: ["ATTACKER tries to rip DEFENDER's limbs off"],
+    messagesDead: ["ATTACKER rips DEFENDER's head off"],
+    messagesOverpower: ["ATTACKER effortlessly rips DEFENDER's body in half"],
+};
+
+export const attacks = [
+    attackPunch,
+    attackCut,
+    attackStab,
+    attackKick,
+    attackStomp,
+    attackSit,
+    attackRip,
+];
+
 export const npcBecky: INPC = {
     id: NPC.BECKY,
     name: "Becky",
@@ -70,6 +187,7 @@ export const npcBecky: INPC = {
     charisma: 5,
     lockpicking: 50,
     type: NpcType.QUEST_GIVER,
+    attacks: [Attack.KICK, Attack.STOMP, Attack.SIT, Attack.RIP],
 };
 
 export const npcTato: INPC = {
@@ -93,6 +211,7 @@ export const npcTato: INPC = {
     charisma: 20,
     lockpicking: 0,
     type: NpcType.QUEST_GIVER,
+    attacks: [Attack.PUNCH],
 };
 
 export const npcs = [npcBecky, npcTato];

src/services/game/structures/items.ts

@@ -1,3 +1,4 @@
+import { Attack } from "./entities.js";
 import { Rarity } from "./rarities.js";
 
 export interface IItem {
@@ -8,6 +9,7 @@ export interface IItem {
     type: ItemType;
     rarity: Rarity;
     stats: IStat[];
+    attacks: Attack[];
 }
 
 export interface IStat {
@@ -56,4 +58,5 @@ export const itemShortsword: IItem = {
             defense: 0,
         },
     ],
+    attacks: [Attack.CUT, Attack.STAB],
 };