75 lines
2.1 KiB
TypeScript
75 lines
2.1 KiB
TypeScript
import { Component, type EvalContext, type World } from "../core/world";
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import { component } from "../core/registry";
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import type { RPGAction } from "../types";
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import { action, variable } from "../utils/decorators";
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import { executeAction } from "../utils/variables";
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interface ItemState {
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name: string;
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description: string;
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}
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@component
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export class Item extends Component<ItemState> {
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constructor(name: string, description = '') {
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super({ name, description });
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}
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get name(): string { return this.state.name; }
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get description(): string { return this.state.description; }
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}
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interface StackableState {
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maxStack: number;
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}
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@component
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export class Stackable extends Component<StackableState> {
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constructor(maxStack: number) {
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super({ maxStack });
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}
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@variable get maxStack(): number { return this.state.maxStack; }
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}
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interface UsableState {
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actions: RPGAction[];
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consumeOnUse: boolean;
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}
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@component
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export class Usable extends Component<UsableState> {
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constructor(actions: RPGAction[], consumeOnUse = true) {
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super({ actions, consumeOnUse });
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}
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@variable get consumeOnUse(): boolean { return this.state.consumeOnUse; }
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@action
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use(arg?: EvalContext, ctx?: EvalContext): void {
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ctx = arg ?? ctx ?? this.context;
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if (!ctx) return;
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for (const action of this.state.actions) {
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executeAction(action, ctx);
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}
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}
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}
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export namespace Items {
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export interface RegisterOptions {
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maxStack?: number;
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description?: string;
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usable?: { actions: RPGAction[]; consumeOnUse?: boolean };
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}
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export function register(world: World, id: string, name: string, options?: RegisterOptions) {
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const entity = world.createEntity(id);
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entity.add('item', new Item(name, options?.description));
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if (options?.maxStack !== undefined)
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entity.add('stackable', new Stackable(options.maxStack));
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if (options?.usable)
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entity.add('usable', new Usable(options.usable.actions, options.usable.consumeOnUse));
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return entity;
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}
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}
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