---
title: "Rising-stack swap puzzles: API"
package: "@phaser-ae/rise-stack"
tier: Pro
version: 3.0.0-1
released: 2026-10-19
updated: 2026-10-20
description: "The rising-stack panel puzzle as a frame-stepped simulation, with a swap cursor, flash and pop timing, hovering panels, true chains, garbage blocks and versus play."
url: https://phaser.io/packs/rise-stack/api
site: Phaser - https://phaser.io
---

# Rising-stack swap puzzles: API

`@phaser-ae/rise-stack` — A rising stack frame by frame: a swap cursor, flash and pop timing, hover, chains by provenance, garbage and versus, as in Panel de Pon and Tetris Attack.

## The pack

### `riseStack`

```ts
function riseStack(): Pack<{ riseStack: RiseStackApi }>
```

The `rise-stack` pack. Pure logic, so it needs no backend and runs headless.

## Helpers

### `createRiseStack`

```ts
function createRiseStack(cfg: RiseConfig = {}): RiseStack
```

Creates a rising stack.

### `riseVersusBoard`

```ts
function riseVersusBoard(stack: RiseStack): RiseVersusBoard
```

Wrap a stack for `versus-garbage`'s `createVersusMatch`.

### `TETRIS_ATTACK_TABLES`

```ts
const TETRIS_ATTACK_TABLES: RiseTables
```

Tetris Attack's score and garbage tables as fans have documented them (combo bonus 20 at 4 panels up to 410 at 13;
chain bonus 50 at ×2 up to 1800 at ×13; a 4-combo sends a 3-wide block, a 7-combo a 6-wide one, larger combos two or
three blocks). The stop times are estimates.

## Classes

### `RiseStack`

```ts
class RiseStack
```

A Panel de Pon stack. Call `step(input)` once per 60 Hz frame.

- `readonly cols: number` — Columns.
- `readonly rows: number` — Rows.
- `readonly colors: number` — Panel colours.
- `readonly timings: RiseTimings` — Phase timings in force.
- `readonly tables: RiseTables` — Tables in force.
- `riseSpeed: number` — Rows a second the stack rises on its own; change it to speed the game up.
- `raiseSpeed: number` — Rows a second while raising.
- `readonly grace: number` — Frames of grace against the top.
- `score: number` — Score.
- `chain: number` — The chain the board is on: 1 when no chain is running.
- `stop: number` — Frames of stop time left: the stack does not rise.
- `progress: number` — How far (0 to 1) the next row has risen into view.
- `danger: number` — Frames of grace used against the top.
- `topOut: boolean` — True once the stack has topped out.
- `cursor: XY` — The cursor: its left cell.
- `preview: number[]` — Colours of the row rising into view beneath the stack.
- `frame: number` — Frames stepped.
- `constructor(cfg: RiseConfig = {})`
- `panel(x: number, y: number): PanelView | null` — The panel or garbage cell at (x, y), or null.
- `garbage(): GarbageView[]` — Every garbage block on the board.
- `get pendingGarbage(): number` — Garbage cells waiting to drop.
- `get busy(): boolean` — Whether anything is clearing, hovering or falling.
- `swap(x: number, y: number): boolean` — Swap the cells at (x, y) and (x + 1, y) now, as a pointer or a script would. False if the swap is not allowed.
- `dropGarbage(w: number, h = 1): void` — Queue a garbage block to drop at the top: `w` columns (from the left edge, alternating sides) by `h` rows.
- `cancelGarbage(cells: number): number` — Cancel up to `cells` of queued garbage, newest first. Returns how many cells were cancelled.
- `findSwaps(): XY[]` — Swaps that would make a match at once, for hints and simple AI: the left cell of each.
- `step(input: RiseInput = {}): RiseEvent[]` — Advance one 60 Hz frame with this input. Returns what happened since the last step, in order (a `swap` made between steps included).
- `snapshot(): RiseSnapshot` — The whole state as plain data.
- `restore(snap: RiseSnapshot): void` — Return to a `snapshot()` of a stack with the same size and rules.
- `debugGrid(): string` — The board as text, for tests: `.` empty, `G` garbage, `*` clearing, a colour digit otherwise.

### `RiseVersusBoard`

```ts
class RiseVersusBoard implements VersusBoard<RiseInput>
```

A `RiseStack` as a `VersusBoard`.

- `readonly kind: "rise-stack"` — Board family.
- `constructor(readonly stack: RiseStack)`
- `step(input: RiseInput): void` — One 60 Hz frame.
- `take(): VersusBoardEvent[]` — Events since the last call.
- `receive(amount: number): void` — Garbage arrives as full-width rows, then one block of what is left (at least 3 wide).
- `offset(amount: number): number` — Cancel queued garbage.
- `get pending(): number` — Garbage cells queued and not yet dropped.
- `get lost(): boolean` — Topped out.
- `get score(): number` — Score.
- `snapshot(): { stack: RiseSnapshot; resolving: boolean }` — Plain data.
- `restore(snap: unknown): void` — Restore a `snapshot()`.

## Types

### `GarbageView`

```ts
interface GarbageView
```

A garbage block, as a renderer reads it.

- `id: number` — Block id.
- `x: number` — Left column.
- `y: number` — Top row.
- `w: number` — Width in columns.
- `h: number` — Height in rows.
- `state: 'idle' | 'fall' | 'clear'` — `idle`, `fall`, or `clear` while it flashes before its bottom row turns into panels.

### `PanelState`

```ts
type PanelState = 'idle' | 'swap' | 'hover' | 'fall' | 'clear' | 'popped'
```

A panel's phase.

### `PanelView`

```ts
interface PanelView
```

A panel, as a renderer reads it.

- `id: number` — Stable id for the panel's life (a garbage cell's id is its block's).
- `color: number` — Colour index, or -1 for garbage.
- `state: PanelState` — Its phase. A `clear` panel is flashing or waiting to pop; a `popped` one is an empty-looking gap still holding up what stands on it.
- `timer: number` — Frames left in the phase.
- `chain: boolean` — Carries the chain flag: it fell because of a clear.
- `flashing?: boolean` — A `clear` panel still in its flash (before it shows its face).
- `garbage?: number` — The garbage block this cell belongs to, if any.

### `RiseConfig`

```ts
interface RiseConfig
```

Configures `createRiseStack`.

- `cols?: number` — Columns. Default 6.
- `rows?: number` — Rows. Default 12.
- `colors?: number` — Panel colours, 3 to 8. Default 5.
- `seed?: number` — Seed for the panels. Default 1.
- `fillRows?: number` — Rows filled at the start (a clean deal: no matches). Default 6. Ignored with `layout`.
- `layout?: readonly string[]` — A starting board instead of a deal, for puzzles and tests: rows of text, top to bottom, `.` for empty and a digit for a colour. Fewer rows than the stack sit at its bottom. Panels left floating fall on the first frames.
- `riseSpeed?: number` — Rows a second the stack rises on its own. Default 0.25.
- `raiseSpeed?: number` — Rows a second while the raise button is held. Default 8.
- `grace?: number` — Frames the stack may press against the top before the game is lost. Default 60.
- `timings?: Partial<RiseTimings>` — Phase timings.
- `tables?: Partial<RiseTables>` — Score, stop-time and garbage tables. Default `TETRIS_ATTACK_TABLES`.

### `RiseEvent`

```ts
type RiseEvent = | { type: 'rise' } | { type: 'swap'; at: XY } | { type: 'match'; cells: XY[]; combo: number; chain: number; points: number } | { type: 'pop'; at: XY; id: number } | { type: 'land'; ids: number[] } | { type: 'chainEnd'; chain: number } | { type: 'attack'; garbage: { w: number; h: number }[]; combo: number; chain: number } | { type: 'garbageDrop'; id: number; at: XY; w: number; h: number } | { type: 'garbageBreak'; id: number; panels: XY[] } | { type: 'danger'; frames: number } | { type: 'topOut' }
```

One thing that happened in a frame, in order.

### `RiseInput`

```ts
interface RiseInput
```

What a frame's input does. Movement and swap are presses (one action each); `raise` is held.

- `up?: boolean` — Move the cursor up a row.
- `down?: boolean` — Move the cursor down a row.
- `left?: boolean` — Move the cursor left a column.
- `right?: boolean` — Move the cursor right a column.
- `swap?: boolean` — Swap the two cells under the cursor.
- `raise?: boolean` — Raise the stack quickly while held.

### `RiseSnapshot`

```ts
interface RiseSnapshot
```

The plain-data state of a stack, from `snapshot()`.

- `grid: (Cell | null)[]` — Grid cells, row by row (null for empty).
- `blocks: Block[]` — Garbage blocks on the board.
- `queue: { w: number; h: number }[]` — Garbage waiting to drop.
- `groups: { cells: number[]; timer: number; pops: number; total: number }[]` — Clearing groups, as indices into `grid`.
- `s: { score: number; chain: number; stop: number; progress: number; danger: number; topOut: boolean; cursor: XY; preview: number[]; nextId: number; drops: number; frame: number; rng: RngState }` — The other scalar state.

### `RiseStackApi`

```ts
type RiseStackApi = typeof api
```

`game.riseStack` — every function and class this pack carries, as one namespace.

### `RiseTables`

```ts
interface RiseTables
```

The scoring and attack tables. Index n of a table is the value for n; past the end, the last entry holds.

- `panel: number` — Points per panel cleared. Default 10.
- `comboBonus: readonly number[]` — Bonus for a combo of n panels (n ≥ 4), from index 4.
- `chainBonus: readonly number[]` — Bonus for a chain link of length n (n ≥ 2), from index 2.
- `comboGarbage: readonly (readonly number[])[]` — Garbage widths a combo of n panels sends, from index 4.
- `comboStop: readonly number[]` — Frames of stop time for a combo of n panels, from index 4.
- `chainStop: readonly number[]` — Frames of stop time for a chain link of length n, from index 2.

### `RiseTimings`

```ts
interface RiseTimings
```

Frame counts (60 Hz) for each phase of a panel's life.

- `swap: number` — A swap's slide. Default 4.
- `flash: number` — A match flashes for this long. Default 44.
- `face: number` — Then shows its face for this long before the first panel pops. Default 15.
- `pop: number` — Then one panel pops every this many frames. Default 9.
- `hover: number` — A panel that has lost its support hangs this long before it falls. Default 12.
- `fall: number` — A falling panel or block drops one row every this many frames. Default 1.

### `XY`

```ts
interface XY
```

A cell position: column `x` from the left, row `y` from the top.

- `x: number` — Column, from 0 at the left.
- `y: number` — Row, from 0 at the top.

---

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