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deepseek 764da2ee6c Dino Isle Online: multiplayer dino survival game (The Isle-like)

- Zero-dependency Node server: HTTP static + hand-rolled RFC6455 WebSocket + 20Hz authoritative simulation
- Seeded island worldgen (tiles, forest decor, spawns)
- 4 playable species, needs (food/water/stamina), rest, growth stages Hatchling->Apex
- AI fauna: critters, fish shoals, Dryosaurus/Psittacosaurus herds; carcass feasting
- PvP with knockback, kill feed, chat, leaderboard, minimap, day/night cycle
- True top-down procedural dino renderer shared by menu cards and in-game
- Developer mode (` key): god-mode, x6 XP, instant evolve, spawn AI, Alt+Click tp
- Headless smoke tests, real-browser visual tests, pixel match checks

2026-08-23 07:00:08 +00:00

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🦖 Dino Isle Online

A multiplayer dino-survival island game in the spirit of The Isle — playable in any browser. Eat, drink, rest, grow through 4 evolution stages, hunt AI prey, and devour the other players.

Zero dependencies — pure Node.js (HTTP + hand-rolled WebSocket) and vanilla JS canvas on the client.

▶ Play

node server.js          # default port 8095  (PORT=xxxx node server.js to change)

Open http://localhost:8095 — open more tabs / other devices on the LAN for multiplayer. Everyone plays on the same persistent island.

🎮 How to survive

Key	Action
`WASD` / arrows	Move
`Shift`	Sprint (drains stamina)
`Space` / left click	Bite (hunt & fight)
`E` (hold)	Context action: eat carcass · graze plants · drink at water
`R`	Rest — regenerates stamina/HP fast, but you're defenseless
`Enter`	Chat · `M` mute

Survival loop

Food decays constantly; sprinting drains it faster. Starving hurts.
Water decays faster; stand in shallow water or at the shore and hold E.
Health only regenerates when fed & hydrated — or fast while resting.
Growth: every meal gives XP → Hatchling → Adolescent → Adult → Apex. Each stage makes you visibly bigger, stronger and tougher (camera zooms out).
Diets matter: herbivores graze grass patches & berry bushes, carnivores hunt, omnivores eat everything.
Fauna: skittish critters roam land, fish shoals dart around shallows — wade in and time your bite when they tire — and AI dinosaur herds (Dryosaurus, Psittacosaurus) graze the plains: medium prey that flee hard but drop big carcasses worth feasting on.
PvP: everyone can attack everyone. Kills drop a carcass — feast on your rivals for big XP. Death shows a recap screen; respawn keeps playing.
Watch the day/night cycle — nights are dark and dangerous.

🛠 Developer mode (testing helpers)

Press ` (backquote) in-game to toggle. While active:

God-mode: no hunger/thirst decay, HP & stamina stay full
×6 growth XP, ×2.5 bite damage, +28% speed
Hotkeys: 1 full heal · 2 evolve one stage instantly · 3 spawn an AI dino nearby · Alt+Click teleport to cursor

🧪 Tests

node test/smoke.mjs     # headless 2-player integration test (join, sync, move,
                        # hunt, AI-dino hunt, PvP kill, carcass feast, respawn,
                        # chat, developer mode)
node test/visual.mjs    # real-browser UI test via playwright-core (menu → play)

🗂 Structure

server.js        HTTP static server + WebSocket upgrade + game loop (20 Hz tick)
sim.js           Authoritative simulation: species, needs, growth, AI, combat
worldgen.js      Seeded island generation (tiles, forest decor, spawns)
ws.js            Minimal RFC6455 WebSocket implementation (no deps)
public/          index.html · style.css · client.js (canvas renderer, prediction)
test/smoke.mjs   Headless multiplayer smoke test

Notes: DEBUG_CHEATS=1 enables a {t:'tp'} teleport message used by tests.

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