123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212 |
- /*
- * Copyright (c) 2019 - 2020 Arnaud Vergnet.
- *
- * This file is part of Campus INSAT.
- *
- * Campus INSAT is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * Campus INSAT is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Campus INSAT. If not, see <https://www.gnu.org/licenses/>.
- */
-
- import ShapeL from '../Shapes/ShapeL';
- import ShapeI from '../Shapes/ShapeI';
- import ShapeJ from '../Shapes/ShapeJ';
- import ShapeO from '../Shapes/ShapeO';
- import ShapeS from '../Shapes/ShapeS';
- import ShapeT from '../Shapes/ShapeT';
- import ShapeZ from '../Shapes/ShapeZ';
- import type {CoordinatesType} from '../Shapes/BaseShape';
- import BaseShape from '../Shapes/BaseShape';
- import type {GridType} from '../components/GridComponent';
-
- /**
- * Class used as an abstraction layer for shapes.
- * Use this class to manipulate pieces rather than Shapes directly
- *
- */
- export default class Piece {
- shapes = [ShapeL, ShapeI, ShapeJ, ShapeO, ShapeS, ShapeT, ShapeZ];
-
- currentShape: BaseShape;
-
- theme: ReactNativePaper.Theme;
-
- /**
- * Initializes this piece's color and shape
- *
- * @param theme Object containing current theme
- */
- constructor(theme: ReactNativePaper.Theme) {
- this.currentShape = this.getRandomShape(theme);
- this.theme = theme;
- }
-
- /**
- * Gets a random shape object
- *
- * @param theme Object containing current theme
- */
- getRandomShape(theme: ReactNativePaper.Theme): BaseShape {
- return new this.shapes[Math.floor(Math.random() * 7)](theme);
- }
-
- /**
- * Removes the piece from the given grid
- *
- * @param grid The grid to remove the piece from
- */
- removeFromGrid(grid: GridType) {
- const pos: Array<CoordinatesType> = this.currentShape.getCellsCoordinates(
- true,
- );
- pos.forEach((coordinates: CoordinatesType) => {
- grid[coordinates.y][coordinates.x] = {
- color: this.theme.colors.tetrisBackground,
- isEmpty: true,
- key: grid[coordinates.y][coordinates.x].key,
- };
- });
- }
-
- /**
- * Adds this piece to the given grid
- *
- * @param grid The grid to add the piece to
- * @param isPreview Should we use this piece's current position to determine the cells?
- */
- toGrid(grid: GridType, isPreview: boolean) {
- const pos: Array<CoordinatesType> = this.currentShape.getCellsCoordinates(
- !isPreview,
- );
- pos.forEach((coordinates: CoordinatesType) => {
- grid[coordinates.y][coordinates.x] = {
- color: this.currentShape.getColor(),
- isEmpty: false,
- key: grid[coordinates.y][coordinates.x].key,
- };
- });
- }
-
- /**
- * Checks if the piece's current position is valid
- *
- * @param grid The current game grid
- * @param width The grid's width
- * @param height The grid's height
- * @return {boolean} If the position is valid
- */
- isPositionValid(grid: GridType, width: number, height: number): boolean {
- let isValid = true;
- const pos: Array<CoordinatesType> = this.currentShape.getCellsCoordinates(
- true,
- );
- for (let i = 0; i < pos.length; i += 1) {
- if (
- pos[i].x >= width ||
- pos[i].x < 0 ||
- pos[i].y >= height ||
- pos[i].y < 0 ||
- !grid[pos[i].y][pos[i].x].isEmpty
- ) {
- isValid = false;
- break;
- }
- }
- return isValid;
- }
-
- /**
- * Tries to move the piece by the given offset on the given grid
- *
- * @param x Position X offset
- * @param y Position Y offset
- * @param grid The grid to move the piece on
- * @param width The grid's width
- * @param height The grid's height
- * @param freezeCallback Callback to use if the piece should freeze itself
- * @return {boolean} True if the move was valid, false otherwise
- */
- tryMove(
- x: number,
- y: number,
- grid: GridType,
- width: number,
- height: number,
- freezeCallback: () => void,
- ): boolean {
- let newX = x;
- let newY = y;
- if (x > 1) {
- newX = 1;
- } // Prevent moving from more than one tile
- if (x < -1) {
- newX = -1;
- }
- if (y > 1) {
- newY = 1;
- }
- if (y < -1) {
- newY = -1;
- }
- if (x !== 0 && y !== 0) {
- newY = 0;
- } // Prevent diagonal movement
-
- this.removeFromGrid(grid);
- this.currentShape.move(newX, newY);
- const isValid = this.isPositionValid(grid, width, height);
-
- if (!isValid) {
- this.currentShape.move(-newX, -newY);
- }
-
- const shouldFreeze = !isValid && newY !== 0;
- this.toGrid(grid, false);
- if (shouldFreeze) {
- freezeCallback();
- }
- return isValid;
- }
-
- /**
- * Tries to rotate the piece
- *
- * @param grid The grid to rotate the piece on
- * @param width The grid's width
- * @param height The grid's height
- * @return {boolean} True if the rotation was valid, false otherwise
- */
- tryRotate(grid: GridType, width: number, height: number): boolean {
- this.removeFromGrid(grid);
- this.currentShape.rotate(true);
- if (!this.isPositionValid(grid, width, height)) {
- this.currentShape.rotate(false);
- this.toGrid(grid, false);
- return false;
- }
- this.toGrid(grid, false);
- return true;
- }
-
- /**
- * Gets this piece used cells coordinates
- *
- * @return {Array<CoordinatesType>} An array of coordinates
- */
- getCoordinates(): Array<CoordinatesType> {
- return this.currentShape.getCellsCoordinates(true);
- }
-
- getCurrentShape(): BaseShape {
- return this.currentShape;
- }
- }
|