break_eternity

package-lock.json

@@ -8,6 +8,7 @@
       "name": "resource-graph-sim",
       "version": "0.1.0",
       "dependencies": {
+        "break_eternity.js": "^2.1.3",
         "elkjs": "^0.12.0",
         "react": "^18.3.1",
         "react-dom": "^18.3.1"
@@ -1231,6 +1232,12 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/break_eternity.js": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/break_eternity.js/-/break_eternity.js-2.1.3.tgz",
+      "integrity": "sha512-4tg4j0wc0lhaYAnOHubN5mAyHbhMfUI7adQLO8l/loKqtylZ/kHWp8WYqG2EC0TinSesKvpCi3XeVFcKRUBJsQ==",
+      "license": "MIT"
+    },
     "node_modules/browserslist": {
       "version": "4.28.8",
       "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.28.8.tgz",

package.json

@@ -9,6 +9,7 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "break_eternity.js": "^2.1.3",
     "elkjs": "^0.12.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1"

src/App.tsx

@@ -15,13 +15,8 @@ export default function App() {
   // useEffect(() => saveTickCount(tickCount), [tickCount]);
 
   function handleTick() {
-    game.tick(1.0 / 60);
+    game.tick(1.0 / 10);
-    // const nextTopology = cloneJSON(game);
+    setGame(game.clone());
-    // const nextBuffers = cloneJSON(buffers);
-    // tick(nextTopology, nextBuffers);
-    // setGame(nextTopology);
-    // setBuffers(nextBuffers);
-    // setTickCount((n) => n + 1);
   }
 
   function handleReset() {
@@ -31,8 +26,8 @@ export default function App() {
     if (!ok)
       return;
 
-    game.time = 0;
+    game.reset();
-    save(game);
+    setGame(game.clone());
   }
 
   function handleInitialize() {
@@ -43,7 +38,6 @@ export default function App() {
       return;
 
     setGame(deserialize(defaultGame()));
-    save(game);
   }
 
   // function handleAddNode(kind: NodeKind) {

src/components/NodeCard.tsx

@@ -59,11 +59,11 @@ const NodeCard = forwardRef<HTMLDivElement, Props>(function NodeCard({ node2d, s
       <div className="node__kind">{node.behaviour.kind}</div>
       {
         Object.entries(info.storages).map(([name, storage]) => (
-          <div className="node__resources">
+          <div className="node__resources" key={name}>
             <div>{name}</div>
             {
               Object.entries(storage)
-                .map(([rt, v]) => `${ResourceDescriptions[rt as Resource].icon}${v}`).join(' ')
+                .map(([rt, v]) => `${ResourceDescriptions[rt as Resource].icon}${v.toStringWithDecimalPlaces(4)}`).join(' ')
             }
           </div>
         ))
@@ -73,6 +73,7 @@ const NodeCard = forwardRef<HTMLDivElement, Props>(function NodeCard({ node2d, s
           info.links.map((link) => <div key={`${link.target}/${link.resource}`}>→{link.target}/{link.resource}</div>)
         }
       </div>
+      <div className="node__debug" style={{fontSize: '50%', whiteSpace: 'pre'}}>{JSON.stringify(info, undefined, 4)}</div>
     </div>
   );
 });

src/components/Topbar.tsx

@@ -1,5 +1,7 @@
+import type Decimal from 'break_eternity.js';
+
 interface Props {
-  time: number;
+  time: Decimal;
   onTick: () => void;
   onReset: () => void;
   onInitialize: () => void;
@@ -13,7 +15,7 @@ export default function Topbar({ time, onTick, onReset, onInitialize }: Props) {
         <span>детерминированная тиковая симуляция</span>
       </h1>
       <div className="tick-counter">
-        Время <b>{time}</b>
+        Время <b>{time.toStringWithDecimalPlaces(4)}</b>
       </div>
       <div className="spacer" />
       <button className="btn" onClick={onInitialize}>

src/engine/functions/index.ts

@@ -1,4 +1,5 @@
-import { Resource, Resources, SerializedConverter, SerializedNodeBehaviour as SerializedBehaviour, SerializedNodeBehaviour, SerializedConverterOutput, SerializedConverterInput } from "../../types";
+import Decimal, { DecimalSource } from "break_eternity.js";
+import { Resource, Resources, SerializedConverter, SerializedNodeBehaviour as SerializedBehaviour, SerializedNodeBehaviour } from "../../types";
 
 export type BehaviourResourcePin = {
     resource: Resource;
@@ -41,13 +42,14 @@ export abstract class Behaviour {
     public readonly kind: string;
     public readonly inputs: BehaviourInputs;
     public readonly outputs: BehaviourOutputs;
+    protected readonly storage: Partial<Resources> = {};
 
     constructor(source: SerializedBehaviour) {
         this.id = source.id;
         this.kind = source.kind;
         this.outputs = {
-            pins: source.outputs.pins.map((input) => ({
+            pins: source.outputs.pins.map((output) => ({
-                resource: input.resource,
+                resource: output.resource,
             })),
         }
         this.inputs = {
@@ -58,34 +60,69 @@ export abstract class Behaviour {
         }
     }
 
+    public reset() {
+        for (const res of Object.keys(this.storage))
+            delete (this.storage[res as Resource]);
+    }
+
     abstract getDisplayInfo(): BehaviourDisplayInfo;
 
-    abstract tick(deltaTime: number): void;
+    /** Withdraws up to `amount` of `resource` from this behaviour's storage, returning how much was actually taken. */
-}
+    public take(resource: Resource, amount: DecimalSource): Decimal {
+        const available = this.storage[resource] ?? Decimal.dZero;
+        const taken = available.min(amount);
+        this.storage[resource] = available.sub(taken);
+        return taken;
+    }
 
-export type ResourceUsageRule = {
+    protected give(resource: Resource, amount: DecimalSource): void {
-    resource: Resource;
+        this.storage[resource] = (this.storage[resource] ?? Decimal.dZero).add(amount);
-    speed: number; // per second
+    }
+
+    abstract produce(deltaTime: number): void;
+
+    abstract pull(deltaTime: number, resolve: (id: string) => Behaviour | undefined): void;
 }
 
 export class Converter extends Behaviour {
-    public outputRules: ResourceUsageRule[] = [];
+    public readonly inputRates: Partial<Resources>;
-    rules: { inputs: SerializedConverterInput[]; outputs: SerializedConverterOutput[]; };
+    public readonly outputRates: Partial<Resources>;
 
     constructor(source: SerializedNodeBehaviour & SerializedConverter) {
         if (source.kind !== 'converter')
             throw new Error('Invalid source');
         super(source);
 
-        this.rules = {
+        this.inputRates = {};
-            inputs: source.inputs.pins,
+        for (const pin of source.inputs.pins)
-            outputs: source.outputs.pins,
+            this.inputRates[pin.resource] = new Decimal(pin.rate);
-        };
+
+        this.outputRates = {};
+        for (const pin of source.outputs.pins)
+            this.outputRates[pin.resource] = new Decimal(pin.rate);
+    }
+
+    /** Fills this converter's own storage from its outputs' production rates. */
+    public produce(deltaTime: number): void {
+        for (const output of this.outputs.pins)
+            this.give(output.resource, (this.outputRates[output.resource] ?? Decimal.dZero).mul(deltaTime));
+    }
+
+    /** Pulls resources into this converter's storage from whatever each input pin is linked to. */
+    public pull(deltaTime: number, resolve: (id: string) => Behaviour | undefined): void {
+        for (const input of this.inputs.pins) {
+            const source = resolve(input.link.target);
+            if (!source)
+                continue;
+            const rate = this.inputRates[input.resource] ?? Decimal.dZero;
+            const taken = source.take(input.link.resource, rate.mul(deltaTime));
+            this.give(input.resource, taken);
+        }
     }
 
     public getDisplayInfo(): BehaviourDisplayInfo {
         return {
-            storages: {},
+            storages: { 'Буфер': { ...this.storage } as Resources },
             links: this.inputs.pins.map((input) => input.link),
             sockets: [
                 ...this.inputs.pins.map((input, index) => ({
@@ -101,10 +138,6 @@ export class Converter extends Behaviour {
             ],
         }
     }
-
-    tick(deltaTime: number): void {
-        
-    }
 }
 
 // export class Storage extends Behaviour {

src/engine/saveLoad.ts

@@ -1,26 +1,28 @@
 import { defaultGame } from "../prefabs/game";
 import { Game, SerializedGame, SerializedNodeBehaviour } from "../types";
-import { Behaviour, behaviours } from "./functions";
+import { Behaviour, behaviours, Converter } from "./functions";
 
 export function serializeBehaviour(behaviour: Behaviour): SerializedNodeBehaviour {
     switch (behaviour.kind) {
-        case 'converter':
+        case 'converter': {
+            const converter = behaviour as Converter;
             return {
-                id: behaviour.id,
+                id: converter.id,
                 kind: 'converter',
                 inputs: {
-                    pins: behaviour.inputs.pins.map((pin) => ({
+                    pins: converter.inputs.pins.map((pin) => ({
                         ...pin,
-                        rate: 11,
+                        rate: converter.inputRates[pin.resource] ?? 0,
                     })),
                 },
                 outputs: {
-                    pins: behaviour.outputs.pins.map((pin) => ({
+                    pins: converter.outputs.pins.map((pin) => ({
                         ...pin,
-                        rate: 11,
+                        rate: converter.outputRates[pin.resource] ?? 0,
                     })),
                 },
             };
+        }
         default:
             throw new Error('Unknown behaviour');
     }

src/storage.ts

@@ -1,47 +0,0 @@
-import type { Topology, Buffers } from './engine';
-import { defaultTopology, resetBuffers } from './engine';
-
-const KEY_TOPOLOGY = 'incsim.topology.v1';
-const KEY_BUFFERS = 'incsim.buffers.v1';
-const KEY_TICKS = 'incsim.tickcount.v1';
-
-export function loadTopology(): Topology {
-  try {
-    const raw = localStorage.getItem(KEY_TOPOLOGY);
-    if (raw) return JSON.parse(raw) as Topology;
-  } catch (e) {
-    console.warn('Не удалось прочитать игру из localStorage', e);
-  }
-  const fresh = defaultTopology();
-  saveTopology(fresh);
-  return fresh;
-}
-
-export function saveTopology(topology: Topology): void {
-  localStorage.setItem(KEY_TOPOLOGY, JSON.stringify(topology));
-}
-
-export function loadBuffers(topology: Topology): Buffers {
-  try {
-    const raw = localStorage.getItem(KEY_BUFFERS);
-    if (raw) return JSON.parse(raw) as Buffers;
-  } catch (e) {
-    console.warn('Не удалось прочитать буферы из localStorage', e);
-  }
-  const fresh = resetBuffers(topology);
-  saveBuffers(fresh);
-  return fresh;
-}
-
-export function saveBuffers(buffers: Buffers): void {
-  localStorage.setItem(KEY_BUFFERS, JSON.stringify(buffers));
-}
-
-export function loadTickCount(): number {
-  const raw = localStorage.getItem(KEY_TICKS);
-  return raw ? Number(raw) || 0 : 0;
-}
-
-export function saveTickCount(n: number): void {
-  localStorage.setItem(KEY_TICKS, String(n));
-}

src/types/index.ts

@@ -1,9 +1,10 @@
+import Decimal, { DecimalSource } from "break_eternity.js";
 import { Behaviour } from "../engine/functions";
 import { deserializeBehaviour } from "../engine/saveLoad";
 
 export type Resource = 'wood' | 'plank' | 'stone';
 
-export type Resources = Record<Resource, number>;
+export type Resources = Record<Resource, Decimal>;
 
 export type Node = {
     id: string;
@@ -12,11 +13,11 @@ export type Node = {
 }
 
 export class Game {
-    public time: number;
+    public time: Decimal;
     public readonly nodes: Node[];
 
     constructor(source: SerializedGame) {
-        this.time = source.time;
+        this.time = new Decimal(source.time);
         this.nodes = source.nodes.map((node) => ({
             id: node.id,
             name: node.name,
@@ -25,15 +26,31 @@ export class Game {
     }
 
     public tick(deltaTime: number) {
-        this.time += deltaTime;
+        this.time = this.time.add(deltaTime);
+
+        const behavioursById = new Map(this.nodes.map((node) => [node.behaviour.id, node.behaviour]));
+
         for (const node of this.nodes)
-            node.behaviour.tick(deltaTime);
+            node.behaviour.produce(deltaTime);
+        for (const node of this.nodes)
+            node.behaviour.pull(deltaTime, (id) => behavioursById.get(id));
+    }
+
+    public reset() {
+        this.time = Decimal.dZero;
+         for (const node of this.nodes)
+            node.behaviour.reset();
+    }
+
+    /** Shallow copy with a new identity, so React sees a change after in-place mutations like `tick`. */
+    public clone(): Game {
+        return Object.assign(Object.create(Game.prototype), this);
     }
 }
 
 export type SerializedConverterInput = {
     resource: Resource;
-    rate: number;
+    rate: DecimalSource;
     link: {
         target: SerializedNodeBehaviour['id'],
         resource: Resource,
@@ -42,7 +59,7 @@ export type SerializedConverterInput = {
 
 export type SerializedConverterOutput = {
     resource: Resource;
-    rate: number;
+    rate: DecimalSource;
 }
 
 export type SerializedConverterInputs = {
@@ -74,6 +91,6 @@ export type SerializedNode = {
 }
 
 export type SerializedGame = {
-    time: number;
+    time: DecimalSource;
     nodes: SerializedNode[];
 }