---
title: "Autorun Platformer 2D: API"
package: "@phaser-ae/autorun-platformer-2d"
tier: Pro
version: 3.0.0-4
released: 2026-10-14
updated: 2026-10-19
description: "One-button platform courses where the hero runs by itself and the player only jumps, with pause pads, wall reversals, coin routes and seeded levels that come with a proven route."
url: https://phaser.io/packs/autorun-platformer-2d/api
site: Phaser - https://phaser.io
---

# Autorun Platformer 2D: API

`@phaser-ae/autorun-platformer-2d` — One-button finite platform courses with pause pads, wall reversals, optional coin routes and certified seeded generation.

## The pack

### `autorunPlatformer2d`

```ts
function autorunPlatformer2d():Pack<{autorunPlatformer2d:typeof rules}>
```

Install renderer-independent runner rules and generation.

## Helpers

### `autorunStyles`

```ts
const autorunStyles: readonly ["gardens", "terraces", "skyways", "switchbacks", "mixed"]
```

The course styles `generateAutorun` accepts.

### `compressAutorun`

```ts
function compressAutorun(inputs: AutorunInput[]): AutorunFrame[]
```

Run-length encodes per-tick inputs into {@link AutorunFrame} runs of jump held or released, the form `replay` and a level's `solution` use.

### `createAutorun`

```ts
function createAutorun(config: AutorunConfig)
```

One-button finite course rules over the public platformer motor.

### `generateAutorun`

```ts
function generateAutorun(options: AutorunOptions): AutorunLevel
```

Builds a course from `options` and certifies it by replaying a planned route to the finish, trying up to 100 candidates. Throws if the seed, difficulty, `style` or `sections` is invalid, or if no candidate can be certified.

### `planAutorun`

```ts
function planAutorun(config: AutorunConfig, maxFrames = 12000): AutorunFrame[] | null
```

Geometry-aware controller. Success is a physical witness; failure is not proof of impossibility.

## Types

### `Autorun`

```ts
type Autorun = ReturnType<typeof createAutorun>
```

A running autorun session, as returned by {@link createAutorun}.

### `AutorunConfig`

```ts
type AutorunConfig = { … }
```

An authored course: the platformer-2d motor config, the opening run direction (default 1, rightward) and the optional pads.

- `platform: PlatformConfig`
- `direction?: -1 | 1`
- `pads?: AutorunPad[]`

### `AutorunFrame`

```ts
type AutorunFrame = { … }
```

A run of identical inputs: `input` held for `frames` consecutive 1/60-second ticks (a whole number, 1 to 24000).

- `input: AutorunInput`
- `frames: number`

### `AutorunInput`

```ts
type AutorunInput = { … }
```

One tick of player input: `jump` is whether the single Jump button is held; omitted counts as released.

- `jump?: boolean`

### `AutorunLevel`

```ts
type AutorunLevel = { … }
```

A generated course with its certificate: the resolved options, the playable config, a winning input route that replays to the finish, and measurements of that route.

- `seed: number`
- `parameters: Required<AutorunOptions>`
- `config: AutorunConfig`
- `solution: AutorunFrame[]`
- `metrics: { frames: number; jumps: number; reversals: number; attempt: number; signature: string; sections: number; }`

### `AutorunOptions`

```ts
type AutorunOptions = { … }
```

Settings for {@link generateAutorun}: `seed` is an unsigned 32-bit integer; `difficulty` defaults to medium, `style` to mixed and `sections` (a whole number, 3 to 12) to a count derived from the seed and difficulty.

- `seed: number`
- `difficulty?: Difficulty`
- `style?: AutorunStyle`
- `sections?: number`

### `AutorunPad`

```ts
type AutorunPad = { … }
```

A pause or reverse pad: `x` and `w` give its span in pixels (`w` 8 to 200), `y` the standing surface height, and the first grounded touch triggers it once; `direction` is the run direction to leave in (-1 left, 1 right).

- `id: string`
- `x: number`
- `y: number`
- `w: number`
- `kind: 'pause' | 'reverse'`
- `direction?: -1 | 1`

### `AutorunState`

```ts
type AutorunState = PlatformState & { direction: -1 | 1; paused: boolean; pad: string | null; reversals: number; }
```

The platformer state plus the autorun additions: the current run direction, whether a pause pad is holding the run, the id of the last pad triggered, and how many times the direction has reversed.

### `AutorunStyle`

```ts
type AutorunStyle = typeof autorunStyles[number]
```

One of {@link autorunStyles}.

---

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