summerengine/summer

summerengine/summer · AGENTS.md

summerengine/summer · library/skills/3d-lighting/SKILL.md · Set up 3D scene lighting — DirectionalLight3D vs Omni vs Spot, WorldEnvironment, sky, shadow tuning, ambient — per…

summerengine/summer · library/skills/adaptive-music/SKILL.md · Wire music stems to game state — combat/explore/boss/tension crossfades on a shared bus, paired with a state machine…

summerengine/summer · library/skills/agent-playtesting/SKILL.md · Playtest by driving the LIVE game — deterministic launch, frame-stamped probes before/after each action, exact frame…

summerengine/summer · library/skills/ai-characters-in-games/SKILL.md · Safe AI characters in published games: no keys in the build, replies via Summer's player AI gateway, moderation, spend…

summerengine/summer · library/skills/ambient-bed/SKILL.md · Generate a long looping location ambience — forest, dungeon, city, spaceship, cave — a looping AudioStreamPlayer on the…

summerengine/summer · library/skills/animated-loop/SKILL.md · Generate a short seamlessly-looping video clip — splash background, animated logo backdrop, idle title-screen footage —…

summerengine/summer · library/skills/animation-tree/SKILL.md · Design and wire AnimationTree state machines and blend trees so clips respond to gameplay — locomotion blends, attack…

summerengine/summer · library/skills/art-direction/SKILL.md · Define the game's visual style — references, palette, mood, lighting plan, post-processing, do/don't list — output as…

summerengine/summer · library/skills/asset-strategy/SKILL.md · Route any 'I need a [thing]' asset request to the right specialist skill — disambiguates 2D / 3D / audio / video / VFX…

summerengine/summer · library/skills/audio-direction/SKILL.md · Define the game's sonic identity — music style, instruments, SFX vocabulary, dynamic music plan — output as an audio…

summerengine/summer · library/skills/auto-fire-targeting/SKILL.md · Design or fix auto-fire weapon targeting (survivors, top-down ARPG, tower defense) — the pending-damage pattern that…

summerengine/summer · library/skills/bounded-engine-runs/SKILL.md · Run Summer headless or offscreen safely from an agent: time limits, one engine per project, muted runs, import passes…

summerengine/summer · library/skills/brainstorm-game/SKILL.md · Turn a vague idea into a buildable plan — genre, scope, core loop, mechanics, art direction — written as a 1-page brief…

summerengine/summer · library/skills/brainstorming/SKILL.md · Explore user intent, requirements, and design before implementation — must run before any creative work: features…

summerengine/summer · library/skills/browse-templates/SKILL.md · List available Summer Engine project templates, present the choices, and create a project from the chosen one via…

summerengine/summer · library/skills/camera-rigs/SKILL.md · Camera rigs for 2D and 3D: Camera2D follow with limits, first-person head camera, SpringArm3D third-person…

summerengine/summer · library/skills/celeste-momentum-platforming/SKILL.md · Celeste-style 2D precision platformer movement — momentum running, coyote time, variable jumps, dash, wall jump/slide…

summerengine/summer · library/skills/character-animation-wiring/SKILL.md · Wire a rigged, animated character end to end — inspect real clips and bones, locomotion state machine, method-track…

summerengine/summer · library/skills/character-model/SKILL.md · Generate a rigged humanoid — player, NPC, enemy, boss — via T-pose reference, user-gated preview, and Meshy auto-rig…

summerengine/summer · library/skills/character-movement/SKILL.md · Player controllers for 2D and 3D, plus the canonical third-person controller for Summer humanoid packages: movement…

summerengine/summer · library/skills/character-portrait/SKILL.md · Generate a single polished character bust for dialogue UI, character select, lore cards, or codex entries. One…

summerengine/summer · library/skills/cinematic-cutscene/SKILL.md · Generate a non-interactive cutscene — reference-locked look, a 5-10s image-to-video shot, optional TTS dialogue — wired…

summerengine/summer · library/skills/combat-basics/SKILL.md · Damage in Summer Engine: hitbox and hurtbox Areas on opposing layers, a reusable Health component, damage signals…

summerengine/summer · library/skills/compatibility-renderer-traps/SKILL.md · Make a Forward+ Summer game also look right on the Compatibility renderer: instance-uniform budget, black MultiMesh…

summerengine/summer · library/skills/concept-art/SKILL.md · Explore art direction with 3-4 rough concept variants of a character, environment, or prop to pick a vibe before…

summerengine/summer · library/skills/create-asset-sheet/SKILL.md · Generate a pack of 2D game assets from one prompt — tile sheet, UI kit, character pack, or biome set — sliced…

summerengine/summer · library/skills/debug/SKILL.md · Disciplined bug/crash/error loop for Summer projects — script errors, console, debugger, hypothesis, fix, verify —…

summerengine/summer · library/skills/debugging-game-feel/SKILL.md · Debug features that work but feel wrong — floaty jumps, mushy combat, sluggish camera — subjective bugs living in…

summerengine/summer · library/skills/design-level/SKILL.md · Design a single level — layout, pacing, encounters, secrets, reward gating — outputs a level design doc and a node-tree…

summerengine/summer · library/skills/design-mechanic/SKILL.md · Design one game mechanic in detail — input, response, feedback, failure modes, depth, tunables — outputs a design doc…

summerengine/summer · library/skills/design-npc/SKILL.md · Design enemy/NPC/boss/companion behavior — perception, personality, intent, action state machine, telegraphs — outputs…

summerengine/summer · library/skills/diagnosing-perf-regressions/SKILL.md · Find why frame rate, frame time, or load time got worse since a known-good state — regression hunting, not general…

summerengine/summer · library/skills/dispatching-parallel-agents/SKILL.md · Work 2+ independent tasks in parallel when they share no state and have no sequential dependencies.

summerengine/summer · library/skills/driving-the-editor-ui/SKILL.md · Drive the editor UI by name: invoke actions, clear blocking dialogs, switch the main screen, read a dock — and route…

summerengine/summer · library/skills/environment-kit/SKILL.md · Generate a modular environment kit — wall pieces, floor tiles, pillars, doors, arches, corners — snap-together meshes…

summerengine/summer · library/skills/export-and-ship/SKILL.md · Assess and prepare a game export: inventory installed templates and targets, validate release assets and config…

summerengine/summer · library/skills/fabricating-assets/SKILL.md · Fabricate meshes with a bpy script in the user's own Blender (summer_fabricate_3d) — kits with exact dimensions, VFX…

summerengine/summer · library/skills/facial-and-lipsync/SKILL.md · Make a character's mouth move with a voice-over — phoneme extraction from audio, viseme blendshape mapping, and…

summerengine/summer · library/skills/fps-controller/SKILL.md · Production-quality first-person controller — WASD, mouse look, jump, coyote time, jump buffering, air control, and…

summerengine/summer · library/skills/game-feel/SKILL.md · Add juice: hit-flash, trauma-based camera shake, and audio ducking wired so one hit fires all three — for games that…

summerengine/summer · library/skills/gameskill/SKILL.md · Capture what a game-dev session just learned as a reusable skill (project, user or Summer library) so the next session…

summerengine/summer · library/skills/gdscript-patterns/SKILL.md · GDScript conventions — type hints, signals, exports, onready, lifecycle methods, get_node vs $NodePath, naming.

summerengine/summer · library/skills/generate-motion/SKILL.md · Attach an animation clip to a rigged character from the curated Meshy motion library — idle, walk, run, attack — wired…

summerengine/summer · library/skills/godogen-visual-proof-game-generation/SKILL.md · Godogen-style game generation with a visual QC loop — capture frames from the running game, self-verify against the…

summerengine/summer · library/skills/grow-analytics/SKILL.md · Read and analyse a creator's Summer Grow numbers: store page views, launches, play sessions, play time; compare…

summerengine/summer · library/skills/headless-scripting/SKILL.md · Run a GDScript file against Summer Engine from the shell for operations no MCP tool exposes — navmesh baking, collision…

summerengine/summer · library/skills/in-game-purchases/SKILL.md · Sell items for Sparks in a game shop via the Summer purchase sheet: checkout, results, not enough Sparks, inventory…

summerengine/summer · library/skills/instantiate-asset-pack/SKILL.md · Import a whole create-asset-sheet pack into the scene: groups composites, sorts paint order, emits…

summerengine/summer · library/skills/investigating-bugs/SKILL.md · Systematic investigation of any bug, test failure, or unexpected behavior before proposing fixes.

summerengine/summer · library/skills/lumera-single-image-scene-reconstruction/SKILL.md · Lumera-style single image to editable 3D scene — VLM-parsed object boxes and parametric lights, per-object meshes, HDR…

summerengine/summer · library/skills/make-game/SKILL.md · Orchestration spine for 'make me a game': brainstorm, plan, scaffold, mechanics, art, audio, polish, verify, ship —…

summerengine/summer · library/skills/multiplayer-movement/SKILL.md · Client-side movement in Summer multiplayer: owners move instantly, others glide, the authority checks each pose.

summerengine/summer · library/skills/multiplayer-project/SKILL.md · Set up a Summer multiplayer project: both entry scenes, World and queue files, joining, and a first Local Play run.

summerengine/summer · library/skills/multiplayer-publish/SKILL.md · Ship a hosted Summer multiplayer game: the summer.games bundle, server preset, pre-upload checks, and a new Build.

summerengine/summer · library/skills/multiplayer-state/SKILL.md · Authority-owned game state in Summer multiplayer: shared and private State groups, validated Commands, and Events.

summerengine/summer · library/skills/multiplayer-testing/SKILL.md · Test a Summer multiplayer game with Local Play: several players, a bad network, bots, and what a passing run shows.

summerengine/summer · library/skills/multiplayer/SKILL.md · Start here for Summer multiplayer: how the authority, clients, Worlds and Sessions fit, and which skill comes next.

summerengine/summer · library/skills/music-track/SKILL.md · Generate a looped or cinematic music track — loops authored at >=30s with a marked loop point, cinematic tracks at…

summerengine/summer · library/skills/navigate-summer/SKILL.md · When to open a Summer web page or editor surface FOR the user (billing, their games, the scene just built) versus…

summerengine/summer · library/skills/new-project/SKILL.md · Create a fresh blank Summer Engine project — asks one question (project name) and runs summer create empty.

summerengine/summer · library/skills/organic-model/SKILL.md · Generate organic 3D shapes — trees, rocks, mushrooms, coral, plants, vines, crystals — where AI artifacts read as…

summerengine/summer · library/skills/pixel-art/SKILL.md · Generate pixel-art assets — sprites, items, tiles, portraits — at a specific resolution with pixel-perfect grid…

summerengine/summer · library/skills/play/SKILL.md · Run the project in Summer Engine, wait briefly, then report what's happening — clean run, errors, or warnings.

summerengine/summer · library/skills/playtesting-a-feature/SKILL.md · Before claiming a gameplay feature done: actually run the game and walk through the feature. Static diagnostics and…

summerengine/summer · library/skills/procedural-animation/SKILL.md · Runtime bone modification on top of clips — head look-at, foot IK, hand-grabs-prop, additive lean, recoil…

summerengine/summer · library/skills/prop-model/SKILL.md · Generate a single static 3D prop — sword, barrel, chest, lantern, throne, statue — one isolated object, no rigging…

summerengine/summer · library/skills/psx-retro-rendering/SKILL.md · PlayStation 1 rendering in Summer Engine — low-res output, RGB5 and exact dither, affine textures, vertex snapping…

summerengine/summer · library/skills/publish-your-game/SKILL.md · Publish a Summer game on Summer Games through MCP: store page, art, build upload, submit, and one approval link for the…

summerengine/summer · library/skills/realtime-wet-surfaces/SKILL.md · Real-time wetness on existing materials without losing their values — value-copying wet shader, geometry-driven wet…

summerengine/summer · library/skills/release-readiness/SKILL.md · Prove players can play a Summer release: server, online join, progress, files.

summerengine/summer · library/skills/remote-deploy/SKILL.md · Run or test the game on a real device — phone, tablet, another computer — via the Remote Deploy button, runnable export…

summerengine/summer · library/skills/retarget/SKILL.md · Apply existing animation clips from one rigged character to a different rigged character — same library, multiple…

summerengine/summer · library/skills/running-in-the-cloud/SKILL.md · Run Summer Engine on a Linux box with no display — install it, launch headless, know when xvfb + software GL are…

summerengine/summer · library/skills/save-load/SKILL.md · Persist game state in Summer Engine: user:// paths, JSON progress vs ConfigFile settings, a versioned save schema with…

summerengine/summer · library/skills/scene-composition/SKILL.md · Scene structure: node hierarchy, when to extract sub-scenes, reusable prefabs, instance vs add node.

summerengine/summer · library/skills/scene-hierarchy-design/SKILL.md · Structure scenes by access pattern: asset vs live hierarchies, wrapper nodes, sub-scenes, path-agnostic code.

summerengine/summer · library/skills/scene-scripting/SKILL.md · Build scenes, levels, HUDs and wiring with one editor GDScript (summer_run_script) instead of call chains.

summerengine/summer · library/skills/scene-to-level/SKILL.md · Turn a reference image or concept art into a playable scene: concept, asset pack, terrain, assembly.

summerengine/summer · library/skills/skill-create/SKILL.md · Bootstrap a new Summer library skill (library/skills/<slug>/ with resource.yaml and SKILL.md), frontmatter, and stub…

summerengine/summer · library/skills/skill-improve/SKILL.md · Upgrade an underperforming Summer skill — run it against a behavioral spec with and without changes via a parallel-eval…

summerengine/summer · library/skills/skill-test/SKILL.md · Lint a Summer skill before commit, audit the whole library, or check a behavioral spec assertion — static structural…

summerengine/summer · library/skills/skintokens-auto-rigging/SKILL.md · Offline auto-rigging with skin-tokens.cpp (GGML SkinTokens/TokenRig port) — skeleton and skin weights from a static GLB…

summerengine/summer · library/skills/skybox-panorama/SKILL.md · Generate a 360-degree sky panorama and wire it as a PanoramaSkyMaterial Sky resource on WorldEnvironment.

summerengine/summer · library/skills/sound-effect/SKILL.md · Make sound effects (swings, hits, whooshes, reloads, UI): three versions to pick from, then wire them.

summerengine/summer · library/skills/spatial-placement/SKILL.md · Place 3D objects and modular kit pieces from measured geometry: floors, walls, facades, pipes, alcoves.

summerengine/summer · library/skills/sprite-sheet/SKILL.md · Generate animated 2D character sprite sheets (walk, attack, idle, death) for AnimatedSprite2D.

summerengine/summer · library/skills/store-art/SKILL.md · Make Summer Games store art per slot: key art, covers, icons, screenshots, trailer, size and text rules.

summerengine/summer · library/skills/store-listing/SKILL.md · Write a Summer Games store page: title, tagline, descriptions, tags, per platform, and what never to write.

summerengine/summer · library/skills/summer-analytics/SKILL.md · Send game events to Summer analytics from the authority or client: fire-and-forget, never blocking gameplay.

summerengine/summer · library/skills/summer-friends/SKILL.md · Summer friends in a game: a consented friends list, profile and chat screens, direct messages. Hosted only.

summerengine/summer · library/skills/summer-leaderboards/SKILL.md · Leaderboards in a Summer game: queue ratings from matches, and Game rankings your authority scores.

summerengine/summer · library/skills/summer-match-results/SKILL.md · End a Summer match: report each player's win, loss or draw, show results on clients, then close the World.

summerengine/summer · library/skills/summer-matchmaking/SKILL.md · Get players into matches with Summer matchmaking: queues, teams, accept prompts, join progress and failures.

summerengine/summer · library/skills/summer-parties/SKILL.md · Let a Summer party play together: the leader presses Play, members follow into the same match. Hosted only.

summerengine/summer · library/skills/summer-player-data/SKILL.md · Save a player's progress so it follows them to every match: authority load and commit, autosave, safe retries.

summerengine/summer · library/skills/summer-store/SKILL.md · Sell Summer items for Sparks: shop, checkout, item slugs, bundles and sales, owned items, summer.items.json sync…

summerengine/summer · library/skills/summer-world-chat/SKILL.md · Add match chat to a Summer game: one World channel shared by everyone in the match. Hosted only.

summerengine/summer · library/skills/summer-world-saves/SKILL.md · Keep a persistent Summer World between restarts: checkpoint saves, restore before join, the final save.

summerengine/summer · library/skills/text-to-motion/SKILL.md · Make custom 2-second animation clips from text on the user's own rigged models: people, animals, props.

summerengine/summer · library/skills/tileable-texture/SKILL.md · Generate a seamless tileable texture for walls, floors or terrain, wired as a StandardMaterial3D albedo.

summerengine/summer · library/skills/trailer-shot/SKILL.md · Generate trailer footage: slow-mo combat, establishing shots, hero beats, splash screens, 5-10 seconds.

summerengine/summer · library/skills/tune-performance/SKILL.md · Profile a slow game, find rendering, physics or script hotspots, and propose fixes with expected gains.

summerengine/summer · library/skills/ui-basics/SKILL.md · Build UI: HUDs, menus, health bars, dialogue boxes, Control trees, anchors, containers and themes.

summerengine/summer · library/skills/ui-graphics/SKILL.md · Generate game UI art (icons, buttons, panels, frames, HUD widgets) flat, on a transparent background.

summerengine/summer · library/skills/use-widget-asset/SKILL.md · Wire a widget slice from an asset pack (panel, button, bar, toggle) into NinePatchRect or TextureRect.

summerengine/summer · library/skills/using-summer/SKILL.md · Session bootstrap: how to find and use Summer skills and the summer-engine MCP before any response.

summerengine/summer · library/skills/vehicle-model/SKILL.md · Generate a hard-surface vehicle (car, spaceship, mech, boat, tank) as a static or VehicleBody3D mesh.

summerengine/summer · library/skills/verification-before-completion/SKILL.md · Run verification and read its output before claiming work done, fixed or passing: evidence first.

summerengine/summer · library/skills/verifying-scenes/SKILL.md · Prove scene work landed: snapshot, diff, screenshots, runtime reads, 3D audits, shot sheets and zooms.

summerengine/summer · library/skills/vfx-dissolve/SKILL.md · Dissolve effect: a mesh burns away with a glowing edge, from a noise-threshold ShaderMaterial.

summerengine/summer · library/skills/vfx-fire/SKILL.md · Fire effect: animated flames from GPUParticles3D, a particle shader and a noise color ramp.

summerengine/summer · library/skills/vfx-hit-spark/SKILL.md · Hit-spark effect: a one-shot burst of additive particles oriented to the surface, fired on impact.

summerengine/summer · library/skills/vfx-lightning/SKILL.md · Lightning bolt effect: a jagged procedural path with a glow shader, end sparks and screen shake.

summerengine/summer · library/skills/vfx-magic-glow/SKILL.md · Magic-glow effect: a pulsing OmniLight3D, drifting additive motes and an optional emission shader.

summerengine/summer · library/skills/vfx-muzzle-flash/SKILL.md · Muzzle-flash effect: a one-shot ~80 ms burst at a gun barrel, from particles or a star-burst quad.

summerengine/summer · library/skills/vfx-smoke/SKILL.md · Smoke effect: a rising column or puff of soft particles with a noise and density falloff shader.

summerengine/summer · library/skills/vfx-water-ripple/SKILL.md · Water-ripple effect: animated normal-distortion ripples on a water plane or Decal, set off by impacts.

summerengine/summer · library/skills/voice-line/SKILL.md · Generate voice lines (NPC barks, narrator, dialogue) with a character-to-voice choice and multi-line support.

summerengine/summer · library/skills/web-and-touch-input/SKILL.md · Browser and phone input: the first-click rule for sound and mouse capture, focus, touch buttons, a stick.

summerengine/summer · library/skills/web-compatibility-look/SKILL.md · Make a browser game look high-end in the Compatibility renderer (WebGL 2): what works, recipes, speed.

summerengine/summer · library/skills/world-building-3d/SKILL.md · Compose, ground and space 3D scenes with Summer's four spatial tools, one geometric decision at a time.

summerengine/summer · library/skills/writing-plans/SKILL.md · Turn a spec or requirements for a multi-step task into a written implementation plan before touching code.

summerengine/summer · library/skills/writing-skills/SKILL.md · Create, edit, and verify agent skills — format, structure, testing with subagents, and best practices.