246 lines
7.3 KiB
JavaScript
246 lines
7.3 KiB
JavaScript
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// © Головин Г.Г., Логика игрового процесса, 2023
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'use strict';
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// игровое поле и его размеры
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let field, rows = 20, columns = 10;
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// ускорение падения фигур
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const REDUCTION_STEP = 25;
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const REDUCTION_SNAIL = 5;
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let reduction = REDUCTION_STEP;
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// скорость падения фигур
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const START_DELAY = 600;
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const MIN_DELAY = 80;
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let stepDelay = START_DELAY;
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let sleepTimeout, rapidFall = false;
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// уровень, следующий уровень, счёт
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let level, nextLevel, score;
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// массив фигур тетрамино
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const figures = FIGURE.set();
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// текущая фигура, следующая фигура
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let currentFigure, nextFigure;
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// статусы игры
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const GAME = {RUN:0,LEVEL:1,PAUSE:2,OVER:3};
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// текущий статус
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let status = GAME.PAUSE;
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// подготовить новую игру
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function prepareNewGame() {
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field = [];
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for (let i = 0; i < rows; i++) {
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field[i] = [];
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for (let j = 0; j < columns; j++)
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field[i][j] = 0;
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}
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status = GAME.PAUSE;
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level = 0;
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score = 0;
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nextLevel = (10 * columns) * (level + 1);
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stepDelay = START_DELAY;
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startFigureFall();
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repaint();
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}
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// начало падения фигуры
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function startFigureFall() {
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currentFigure = nextFigure;
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const x = Math.floor(columns/2+columns%2-1);
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if (isFreeSpace(0, x)) {
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doPlaceFigure(0, x);
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repaint();
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} else {
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status=GAME.OVER;
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for (let y=-1; y>-4; y--)
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if (isFreeSpace(y, x, false)) {
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doPlaceFigure(y, x);
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break;
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}
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repaint();
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return;
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}
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const rnd = Math.floor(Math.random() * figures.length);
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nextFigure = figures[rnd].clone();
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if (status==GAME.LEVEL) return;
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setTimeout(figureFall, 60);
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}
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// падение фигуры
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function figureFall() {
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if (rapidFall)
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stepDown();
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else
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sleepTimeout = setTimeout(stepDown, stepDelay);
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}
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// шаг вниз
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function stepDown() {
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sleepTimeout = undefined;
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if (status==GAME.PAUSE) return;
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if (isSpaceDown()) {
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doStepDown();
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setTimeout(figureFall, 60);
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} else {
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mergeFigure(currentFigure.type);
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let fullRows = 0;
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for (let i = 0; i < rows; i++)
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if (isFullRow(i)) {
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for (let c = 3; c >= 0; c--)
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setTimeout(blinkFullRow, 400 * fullRows + 100 * c, i, c);
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setTimeout(slideDown, 400 * fullRows + 400, i);
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fullRows++;
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}
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score += columns * [0,1,3,5,10][fullRows];
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if (score >= nextLevel) {
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level++;
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status = GAME.LEVEL;
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nextLevel = (10 * columns) * (level + 1);
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stepDelay = Math.max(MIN_DELAY,stepDelay-reduction);
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}
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startFigureFall();
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}
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}
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// свободное место ниже текущей фигуры
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function isSpaceDown() {
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for (let y = rows-2; y >= 0; y--)
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for (let x = 0; x < columns; x++)
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if (field[y][x]==11 && field[y+1][x]>0 && field[y+1][x]<11
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|| field[y+1][x]==11 && y==rows-2)
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return false;
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return true;
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}
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// сдвинуть текущую фигуру вниз
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function doStepDown() {
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for (let y = rows-2; y >= 0; y--)
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for (let x = 0; x < columns; x++)
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if (field[y][x]==11) {
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field[y][x]=0;
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field[y+1][x]=11;
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}
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repaint();
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}
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// завершение движения текущей фигуры
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function mergeFigure(type) {
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for (let x = 0; x < columns; x++)
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for (let y = 0; y < rows; y++)
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if (field[y][x] == 11)
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field[y][x] = type;
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}
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// заполненная строка
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function isFullRow(row) {
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for (let x = 0; x < columns; x++)
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if (field[row][x] == 0)
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return false;
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return true;
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}
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// моргание заполненной строки
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function blinkFullRow(row, color) {
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for (let x = 0; x < columns; x++)
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field[row][x] = color;
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repaint();
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}
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// сдвинуть поле вниз
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function slideDown(row) {
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for (let y = row-1; y >= 0; y--)
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for (let x = 0; x < columns; x++)
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if (field[y+1][x]!=11 && field[y][x]!=11)
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field[y+1][x]=field[y][x];
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repaint();
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}
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// свободное место для текущей фигуры в пределах границ поля
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function isFreeSpace(y, x, fullSize=true) {
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const height = currentFigure.shape.length;
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const wight = currentFigure.shape[0].length;
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if (fullSize && (y<0 || y+height>rows || x<0 || x+wight>columns))
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return false;
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for (let yy=0; yy<height; yy++)
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for (let xx=0; xx<wight; xx++)
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if (currentFigure.shape[yy][xx]>0)
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if (y+yy>=0 && y+yy<rows && x+xx>=0 && x+xx<columns)
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if (field[y+yy][x+xx]!=0)
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return false;
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return true;
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}
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// разместить текущую фигуру в пределах границ поля
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function doPlaceFigure(y, x, type=11) {
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const height = currentFigure.shape.length;
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const wight = currentFigure.shape[0].length;
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for (let yy=0; yy<height; yy++)
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for (let xx=0; xx<wight; xx++)
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if (currentFigure.shape[yy][xx]>0)
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if (y+yy>=0 && y+yy<rows && x+xx>=0 && x+xx<columns)
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field[y+yy][x+xx]=type;
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}
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// для вызова из контроллера
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function moveFigureLeft() {
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if (isSpaceLeft())
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doStepLeft();
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repaint();
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}
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// свободное место слева от текущей фигуры
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function isSpaceLeft() {
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for (let x = 1; x < columns; x++)
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for (let y = 0; y < rows; y++)
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if (field[y][x]==11 && field[y][x-1]>0 && field[y][x-1]<11
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|| field[y][x-1]==11 && x==1)
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return false;
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return true;
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}
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// сдвинуть текущую фигуру влево
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function doStepLeft() {
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for (let x = 1; x < columns; x++)
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for (let y = 0; y < rows; y++)
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if (field[y][x]==11) {
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field[y][x]=0;
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field[y][x-1]=11;
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}
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}
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// для вызова из контроллера
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function moveFigureRight() {
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if (isSpaceRight())
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doStepRight();
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repaint();
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}
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// свободное место справа от текущей фигуры
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function isSpaceRight() {
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for (let x = columns-2; x >=0; x--)
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for (let y = 0; y < rows; y++)
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if (field[y][x]==11 && field[y][x+1]>0 && field[y][x+1]<11
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|| field[y][x+1]==11 && x==columns-2)
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return false;
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return true;
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}
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// сдвинуть текущую фигуру вправо
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function doStepRight() {
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for (let x = columns-2; x >=0; x--)
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for (let y = 0; y < rows; y++)
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if (field[y][x]==11) {
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field[y][x]=0;
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field[y][x+1]=11;
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}
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}
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// для вызова из контроллера, поворот фигуры
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function rotateFigure() {
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let y = rows, x = columns;
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for (let yy = 0; yy < rows; yy++)
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for (let xx = 0; xx < columns; xx++)
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if (field[yy][xx] == 11) {
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if (y > yy) y = yy;
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if (x > xx) x = xx;
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}
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if (y == rows || x == columns) return;
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const old = currentFigure.shape;
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doPlaceFigure(y, x, 0);
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currentFigure.rotate();
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if (isFreeSpace(y, x))
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doPlaceFigure(y, x);
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else if (isFreeSpace(y, x-1))
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doPlaceFigure(y, x-1);
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else {
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currentFigure.shape = old;
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doPlaceFigure(y, x);
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}
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repaint();
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}
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// после загрузки всех частей страницы, запускаем игру
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document.addEventListener('DOMContentLoaded', function() {
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addEventListener('keydown', keyPressed);
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addEventListener('keyup', keyReleased);
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const rnd = Math.floor(Math.random() * figures.length);
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nextFigure = figures[rnd].clone();
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prepareNewGame();
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});
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