+added console spport for lyngio
+added console support to lyng/jlyng CLI +added unicode escapes +created tetris console sample
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@@ -0,0 +1,664 @@
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#!/usr/bin/env lyng
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/*
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* Lyng Console Tetris (interactive sample)
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*
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* Controls:
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* - Left/Right arrows or A/D: move
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* - Up arrow or W: rotate
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* - Down arrow or S: soft drop
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* - Space: hard drop
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* - Q or Escape: quit
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*/
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import lyng.io.console
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val MIN_COLS = 56
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val MIN_ROWS = 24
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val PANEL_WIDTH = 24
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val BOARD_MARGIN_ROWS = 8
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val BOARD_MIN_W = 10
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val BOARD_MAX_W = 16
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val BOARD_MIN_H = 16
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val BOARD_MAX_H = 28
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val LEVEL_LINES_STEP = 10
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val DROP_FRAMES_BASE = 15
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val DROP_FRAMES_MIN = 3
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val FRAME_DELAY_MS = 35
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val RESIZE_WAIT_MS = 250
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val RNG_A = 1103515245
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val RNG_C = 12345
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val RNG_M = 2147483647
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val ROTATION_KICKS = [0, -1, 1, -2, 2]
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val ANSI_ESC = "\u001b["
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val ANSI_RESET = ANSI_ESC + "0m"
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val UNICODE_BLOCK = "██"
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val UNICODE_TOP_LEFT = "┌"
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val UNICODE_TOP_RIGHT = "┐"
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val UNICODE_BOTTOM_LEFT = "└"
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val UNICODE_BOTTOM_RIGHT = "┘"
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val UNICODE_HORIZONTAL = "──"
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val UNICODE_VERTICAL = "│"
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val UNICODE_DOT = "· "
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type Cell = List<Int>
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type Rotation = List<Cell>
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type Rotations = List<Rotation>
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type Row = List<Int>
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type Board = List<Row>
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class Piece(val name: String, val rotations: Rotations) {}
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class RotateResult(val ok: Bool, val rot: Int, val px: Int) {}
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class GameState(
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pieceId0: Int,
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nextId0: Int,
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next2Id0: Int,
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px0: Int,
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py0: Int,
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) {
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var pieceId = pieceId0
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var nextId = nextId0
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var next2Id = next2Id0
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var rot = 0
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var px = px0
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var py = py0
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var score = 0
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var totalLines = 0
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var level = 1
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var running = true
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var gameOver = false
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}
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class LoopFrame(val resized: Bool, val originRow: Int, val originCol: Int) {}
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fun clearAndHome() {
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Console.clear()
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Console.home()
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}
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fun repeatText(s: String, n: Int): String {
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var out: String = ""
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var i = 0
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while (i < n) {
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out += s
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i = i + 1
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}
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out
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}
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fun maxInt(a: Int, b: Int): Int {
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if (a > b) a else b
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}
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fun minInt(a: Int, b: Int): Int {
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if (a < b) a else b
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}
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fun clampInt(v: Int, lo: Int, hi: Int): Int {
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minInt(hi, maxInt(lo, v))
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}
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fun emptyRow(width: Int): Row {
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val r: Row = []
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var x = 0
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while (x < width) {
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r.add(0)
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x = x + 1
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}
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r
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}
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fun createBoard(width: Int, height: Int): Board {
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val b: Board = []
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var y = 0
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while (y < height) {
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b.add(emptyRow(width))
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y = y + 1
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}
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b
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}
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fun colorize(text: String, sgr: String, useColor: Bool): String {
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if (!useColor) return text
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ANSI_ESC + sgr + "m" + text + ANSI_RESET
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}
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fun blockText(pieceId: Int, useColor: Bool): String {
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if (pieceId <= 0) return " "
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val sgr = when (pieceId) {
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1 -> "36" // I
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2 -> "33" // O
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3 -> "35" // T
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4 -> "32" // S
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5 -> "31" // Z
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6 -> "34" // J
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7 -> "93" // L
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else -> "37"
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}
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colorize(UNICODE_BLOCK, sgr, useColor)
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}
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fun emptyCellText(useColor: Bool): String {
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colorize(UNICODE_DOT, "90", useColor)
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}
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fun canPlace(board: Board, boardW: Int, boardH: Int, pieceId: Int, rot: Int, px: Int, py: Int): Bool {
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val piece: Piece = PIECES[pieceId - 1]
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val cells = piece.rotations[rot]
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for (cell in cells) {
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val x = px + cell[0]
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val y = py + cell[1]
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if (x < 0 || x >= boardW) return false
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if (y >= boardH) return false
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if (y >= 0) {
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val row = board[y]
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if (row[x] != 0) return false
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}
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}
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true
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}
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fun lockPiece(board: Board, pieceId: Int, rot: Int, px: Int, py: Int): Void {
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val piece: Piece = PIECES[pieceId - 1]
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val cells = piece.rotations[rot]
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for (cell in cells) {
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val x = px + cell[0]
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val y = py + cell[1]
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if (y >= 0) {
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val row = board[y]
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row[x] = pieceId
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}
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}
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}
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fun clearCompletedLines(board: Board, boardW: Int, boardH: Int): Int {
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val b = board
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var y = boardH - 1
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var cleared = 0
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while (y >= 0) {
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val row = b[y]
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var full = true
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var x = 0
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while (x < boardW) {
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if (row[x] == 0) {
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full = false
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break
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}
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x = x + 1
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}
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if (full) {
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b.removeAt(y)
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b.insertAt(0, emptyRow(boardW))
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cleared = cleared + 1
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} else {
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y = y - 1
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}
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}
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cleared
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}
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fun activeCellId(pieceId: Int, rot: Int, px: Int, py: Int, x: Int, y: Int): Int {
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val piece: Piece = PIECES[pieceId - 1]
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val cells = piece.rotations[rot]
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for (cell in cells) {
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val ax = px + cell[0]
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val ay = py + cell[1]
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if (ax == x && ay == y) return pieceId
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}
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0
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}
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fun tryRotateCw(board: Board, boardW: Int, boardH: Int, pieceId: Int, rot: Int, px: Int, py: Int): RotateResult {
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val piece: Piece = PIECES[pieceId - 1]
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val rotations = piece.rotations.size
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val nr = (rot + 1) % rotations
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for (kx in ROTATION_KICKS) {
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val nx = px + kx
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if (canPlace(board, boardW, boardH, pieceId, nr, nx, py)) {
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return RotateResult(true, nr, nx)
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}
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}
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RotateResult(false, rot, px)
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}
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fun nextPreviewLines(pieceId: Int, useColor: Bool): List<String> {
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val out: List<String> = []
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if (pieceId <= 0) {
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out.add(" ")
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out.add(" ")
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out.add(" ")
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out.add(" ")
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return out
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}
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val piece: Piece = PIECES[pieceId - 1]
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val cells = piece.rotations[0]
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var y = 0
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while (y < 4) {
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var line = ""
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var x = 0
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while (x < 4) {
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var filled = false
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for (cell in cells) {
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if (cell[0] == x && cell[1] == y) {
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filled = true
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break
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}
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}
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line += if (filled) blockText(pieceId, useColor) else " "
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x = x + 1
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}
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out.add(line)
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y = y + 1
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}
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out
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}
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fun render(
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state: GameState,
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board: Board,
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boardW: Int,
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boardH: Int,
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prevFrameLines: List<String>,
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originRow: Int,
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originCol: Int,
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useColor: Bool,
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): List<String> {
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val bottomBorder = UNICODE_BOTTOM_LEFT + repeatText(UNICODE_HORIZONTAL, boardW) + UNICODE_BOTTOM_RIGHT
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val panel: List<String> = []
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val nextPiece: Piece = PIECES[state.nextId - 1]
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val next2Piece: Piece = PIECES[state.next2Id - 1]
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val nextName = nextPiece.name
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val next2Name = next2Piece.name
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val preview = nextPreviewLines(state.nextId, useColor)
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panel.add("Lyng Tetris")
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panel.add("")
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panel.add("Score: " + state.score)
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panel.add("Lines: " + state.totalLines)
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panel.add("Level: " + state.level)
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panel.add("")
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panel.add("Next: " + nextName)
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panel.add("")
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for (pl in preview) panel.add(pl)
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panel.add("After: " + next2Name)
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panel.add("")
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panel.add("Keys:")
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panel.add("A/D or arrows")
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panel.add("W/Up: rotate")
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panel.add("S/Down: drop")
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panel.add("Space: hard drop")
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panel.add("Q/Esc: quit")
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val frameLines: List<String> = []
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var y = 0
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while (y < boardH) {
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var line = UNICODE_VERTICAL
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var x = 0
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while (x < boardW) {
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val a = activeCellId(state.pieceId, state.rot, state.px, state.py, x, y)
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val row = board[y]
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val b = row[x]
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val id = if (a > 0) a else b
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line += if (id > 0) blockText(id, useColor) else emptyCellText(useColor)
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x = x + 1
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}
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line += UNICODE_VERTICAL
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val p = y
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if (p < panel.size) {
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line += " " + panel[p]
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}
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frameLines.add(line)
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y = y + 1
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}
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frameLines.add(bottomBorder)
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val prev = prevFrameLines
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var i = 0
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while (i < frameLines.size) {
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val line = frameLines[i]
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val old = if (i < prev.size) prev[i] else null
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if (old != line) {
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Console.moveTo(originRow + i, originCol)
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Console.clearLine()
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Console.write(line)
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}
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i = i + 1
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}
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frameLines
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}
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fun waitForMinimumSize(minCols: Int, minRows: Int): Object {
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while (true) {
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val g = Console.geometry()
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val cols = g?.columns ?: 0
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val rows = g?.rows ?: 0
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if (cols >= minCols && rows >= minRows) return g
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clearAndHome()
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println("Lyng Tetris needs at least %sx%s terminal size."(minCols, minRows))
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println("Current: %sx%s"(cols, rows))
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println("Resize the console window to continue...")
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delay(RESIZE_WAIT_MS)
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}
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}
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fun scoreForLines(cleared: Int, level: Int): Int {
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when (cleared) {
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1 -> 100 * level
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2 -> 300 * level
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3 -> 500 * level
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4 -> 800 * level
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else -> 0
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}
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}
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// Classic 7 tetrominoes, minimal rotations per piece.
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fun cell(x: Int, y: Int): Cell { [x, y] }
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fun rot(a: Cell, b: Cell, c: Cell, d: Cell): Rotation {
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val r: Rotation = []
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r.add(a)
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r.add(b)
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r.add(c)
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r.add(d)
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r
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}
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val PIECES: List<Piece> = []
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val iRots: Rotations = []
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iRots.add(rot(cell(0,1), cell(1,1), cell(2,1), cell(3,1)))
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iRots.add(rot(cell(2,0), cell(2,1), cell(2,2), cell(2,3)))
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PIECES.add(Piece("I", iRots))
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val oRots: Rotations = []
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oRots.add(rot(cell(1,0), cell(2,0), cell(1,1), cell(2,1)))
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PIECES.add(Piece("O", oRots))
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val tRots: Rotations = []
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tRots.add(rot(cell(1,0), cell(0,1), cell(1,1), cell(2,1)))
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tRots.add(rot(cell(1,0), cell(1,1), cell(2,1), cell(1,2)))
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tRots.add(rot(cell(0,1), cell(1,1), cell(2,1), cell(1,2)))
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tRots.add(rot(cell(1,0), cell(0,1), cell(1,1), cell(1,2)))
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PIECES.add(Piece("T", tRots))
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val sRots: Rotations = []
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sRots.add(rot(cell(1,0), cell(2,0), cell(0,1), cell(1,1)))
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sRots.add(rot(cell(1,0), cell(1,1), cell(2,1), cell(2,2)))
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PIECES.add(Piece("S", sRots))
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val zRots: Rotations = []
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zRots.add(rot(cell(0,0), cell(1,0), cell(1,1), cell(2,1)))
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zRots.add(rot(cell(2,0), cell(1,1), cell(2,1), cell(1,2)))
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PIECES.add(Piece("Z", zRots))
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val jRots: Rotations = []
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jRots.add(rot(cell(0,0), cell(0,1), cell(1,1), cell(2,1)))
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jRots.add(rot(cell(1,0), cell(2,0), cell(1,1), cell(1,2)))
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jRots.add(rot(cell(0,1), cell(1,1), cell(2,1), cell(2,2)))
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jRots.add(rot(cell(1,0), cell(1,1), cell(0,2), cell(1,2)))
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PIECES.add(Piece("J", jRots))
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val lRots: Rotations = []
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lRots.add(rot(cell(2,0), cell(0,1), cell(1,1), cell(2,1)))
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lRots.add(rot(cell(1,0), cell(1,1), cell(1,2), cell(2,2)))
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lRots.add(rot(cell(0,1), cell(1,1), cell(2,1), cell(0,2)))
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lRots.add(rot(cell(0,0), cell(1,0), cell(1,1), cell(1,2)))
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PIECES.add(Piece("L", lRots))
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if (!Console.isSupported()) {
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println("Console API is not supported in this runtime.")
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void
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} else if (!Console.isTty()) {
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println("This sample needs an interactive terminal (TTY).")
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void
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} else {
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waitForMinimumSize(MIN_COLS, MIN_ROWS)
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val g0 = Console.geometry()
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val cols = g0?.columns ?: MIN_COLS
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val rows = g0?.rows ?: MIN_ROWS
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val boardW = clampInt((cols - PANEL_WIDTH) / 2, BOARD_MIN_W, BOARD_MAX_W)
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val boardH = clampInt(rows - BOARD_MARGIN_ROWS, BOARD_MIN_H, BOARD_MAX_H)
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val board: Board = createBoard(boardW, boardH)
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var rng = 1337
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fun nextPieceId() {
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rng = (rng * RNG_A + RNG_C) % RNG_M
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(rng % PIECES.size) + 1
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}
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val state: GameState = GameState(
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nextPieceId(),
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nextPieceId(),
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||||
nextPieceId(),
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(boardW / 2) - 2,
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-1,
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)
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var prevFrameLines: List<String> = []
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val gameMutex = Mutex()
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var hasResizeEvent = false
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val rawModeEnabled = Console.setRawMode(true)
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if (!rawModeEnabled) {
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||||
println("Raw keyboard mode is not available in this terminal/runtime.")
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||||
println("Use jlyng in an interactive terminal with raw input support.")
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||||
void
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||||
} else {
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val useColor = Console.ansiLevel() != "NONE"
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Console.enterAltScreen()
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Console.setCursorVisible(false)
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clearAndHome()
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fun applyKeyInput(s: GameState, key: String): Void {
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||||
if (key == "__CTRL_C__" || key == "q" || key == "Q" || key == "Escape") {
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||||
s.running = false
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||||
}
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||||
else if (key == "ArrowLeft" || key == "a" || key == "A") {
|
||||
if (canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px - 1, s.py)) s.px = s.px - 1
|
||||
}
|
||||
else if (key == "ArrowRight" || key == "d" || key == "D") {
|
||||
if (canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px + 1, s.py)) s.px = s.px + 1
|
||||
}
|
||||
else if (key == "ArrowUp" || key == "w" || key == "W") {
|
||||
val rr: RotateResult = tryRotateCw(board, boardW, boardH, s.pieceId, s.rot, s.px, s.py)
|
||||
if (rr.ok) {
|
||||
s.rot = rr.rot
|
||||
s.px = rr.px
|
||||
}
|
||||
}
|
||||
else if (key == "ArrowDown" || key == "s" || key == "S") {
|
||||
if (canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px, s.py + 1)) {
|
||||
s.py = s.py + 1
|
||||
s.score = s.score + 1
|
||||
}
|
||||
}
|
||||
else if (key == " ") {
|
||||
while (canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px, s.py + 1)) {
|
||||
s.py = s.py + 1
|
||||
s.score = s.score + 2
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var inputRunning = true
|
||||
launch {
|
||||
while (inputRunning) {
|
||||
try {
|
||||
for (ev in Console.events()) {
|
||||
if (!inputRunning) break
|
||||
if (ev is ConsoleKeyEvent) {
|
||||
val ke = ev as ConsoleKeyEvent
|
||||
if (ke.type == "keydown") {
|
||||
val key = ke.key
|
||||
val ctrl = ke.ctrl
|
||||
gameMutex.withLock {
|
||||
val mapped = if (ctrl && (key == "c" || key == "C")) "__CTRL_C__" else key
|
||||
applyKeyInput(state, mapped)
|
||||
}
|
||||
}
|
||||
} else if (ev is ConsoleResizeEvent) {
|
||||
gameMutex.withLock {
|
||||
hasResizeEvent = true
|
||||
prevFrameLines = []
|
||||
}
|
||||
}
|
||||
}
|
||||
} catch (err: Exception) {
|
||||
// Keep game alive: transient console-event failures should not force quit.
|
||||
if (!inputRunning) break
|
||||
Console.setRawMode(true)
|
||||
delay(50)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fun pollLoopFrame(): LoopFrame? {
|
||||
val g = Console.geometry()
|
||||
val c = g?.columns ?: 0
|
||||
val r = g?.rows ?: 0
|
||||
if (c < MIN_COLS || r < MIN_ROWS) {
|
||||
waitForMinimumSize(MIN_COLS, MIN_ROWS)
|
||||
clearAndHome()
|
||||
prevFrameLines = []
|
||||
return null
|
||||
}
|
||||
|
||||
var resized = false
|
||||
gameMutex.withLock {
|
||||
resized = hasResizeEvent
|
||||
hasResizeEvent = false
|
||||
}
|
||||
|
||||
val contentCols = boardW * 2 + 2 + 3 + PANEL_WIDTH
|
||||
val contentRows = boardH + 1
|
||||
val requiredCols = maxInt(MIN_COLS, contentCols)
|
||||
val requiredRows = maxInt(MIN_ROWS, contentRows)
|
||||
if (c < requiredCols || r < requiredRows) {
|
||||
waitForMinimumSize(requiredCols, requiredRows)
|
||||
clearAndHome()
|
||||
prevFrameLines = []
|
||||
return null
|
||||
}
|
||||
|
||||
val originCol = maxInt(1, ((c - contentCols) / 2) + 1)
|
||||
val originRow = maxInt(1, ((r - contentRows) / 2) + 1)
|
||||
LoopFrame(resized, originRow, originCol)
|
||||
}
|
||||
|
||||
fun advanceGravity(s: GameState, frame: Int): Int {
|
||||
s.level = 1 + (s.totalLines / LEVEL_LINES_STEP)
|
||||
val dropEvery = maxInt(DROP_FRAMES_MIN, DROP_FRAMES_BASE - s.level)
|
||||
|
||||
var nextFrame = frame + 1
|
||||
if (nextFrame < dropEvery) return nextFrame
|
||||
nextFrame = 0
|
||||
|
||||
if (canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px, s.py + 1)) {
|
||||
s.py = s.py + 1
|
||||
return nextFrame
|
||||
}
|
||||
|
||||
lockPiece(board, s.pieceId, s.rot, s.px, s.py)
|
||||
|
||||
val cleared = clearCompletedLines(board, boardW, boardH)
|
||||
if (cleared > 0) {
|
||||
s.totalLines = s.totalLines + cleared
|
||||
s.score = s.score + scoreForLines(cleared, s.level)
|
||||
}
|
||||
|
||||
s.pieceId = s.nextId
|
||||
s.nextId = s.next2Id
|
||||
s.next2Id = nextPieceId()
|
||||
s.rot = 0
|
||||
s.px = (boardW / 2) - 2
|
||||
s.py = -1
|
||||
|
||||
if (!canPlace(board, boardW, boardH, s.pieceId, s.rot, s.px, s.py)) {
|
||||
s.gameOver = true
|
||||
}
|
||||
nextFrame
|
||||
}
|
||||
|
||||
try {
|
||||
if (!canPlace(board, boardW, boardH, state.pieceId, state.rot, state.px, state.py)) {
|
||||
state.gameOver = true
|
||||
}
|
||||
|
||||
var frame = 0
|
||||
var shouldStop = false
|
||||
var prevOriginRow = -1
|
||||
var prevOriginCol = -1
|
||||
while (!shouldStop) {
|
||||
val frameData = pollLoopFrame()
|
||||
if (frameData == null) {
|
||||
frame = 0
|
||||
continue
|
||||
}
|
||||
|
||||
gameMutex.withLock {
|
||||
if (!state.running || state.gameOver) {
|
||||
shouldStop = true
|
||||
} else {
|
||||
val movedOrigin = frameData.originRow != prevOriginRow || frameData.originCol != prevOriginCol
|
||||
if (frameData.resized || movedOrigin) {
|
||||
clearAndHome()
|
||||
prevFrameLines = []
|
||||
}
|
||||
prevOriginRow = frameData.originRow
|
||||
prevOriginCol = frameData.originCol
|
||||
frame = advanceGravity(state, frame)
|
||||
prevFrameLines = render(
|
||||
state,
|
||||
board,
|
||||
boardW,
|
||||
boardH,
|
||||
prevFrameLines,
|
||||
frameData.originRow,
|
||||
frameData.originCol,
|
||||
useColor
|
||||
)
|
||||
}
|
||||
}
|
||||
Console.flush()
|
||||
delay(FRAME_DELAY_MS)
|
||||
}
|
||||
} finally {
|
||||
inputRunning = false
|
||||
Console.setRawMode(false)
|
||||
Console.setCursorVisible(true)
|
||||
Console.leaveAltScreen()
|
||||
Console.flush()
|
||||
}
|
||||
|
||||
if (state.gameOver) {
|
||||
println("Game over.")
|
||||
} else {
|
||||
println("Bye.")
|
||||
}
|
||||
println("Score: %s"(state.score))
|
||||
println("Lines: %s"(state.totalLines))
|
||||
println("Level: %s"(state.level))
|
||||
}
|
||||
}
|
||||
Reference in new issue
Block a user