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// Copyright 2024 The Life2 Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import {CellStates} from './life2.js';
/**
* @fileoverview Life2 Simulator Format.
* A board in the Life2 game can be represented in a specific file format to
* share various states with a team easily.
* @package l2sf
*/
/**
* String representation of a cell.
* @enum {string}
* @const
*/
export const CellChar = {
/** An empty cell. */
EMPTY: '.',
/** A cell belonging to team A. */
TEAM_A: 'a',
/** A cell belonging to team B. */
TEAM_B: 'b',
/** A barrier cell. */
BARRIER: '#',
};
/**
* Converts a cell state to a cell char.
* @param {!CellStates} cell The cell state.
* @return {!CellChar} The cell character.
* @throws {TypeError} If the cell state is not recognized.
* @final
*/
export function cellStateToCellChar(cell) {
switch (cell) {
case CellStates.EMPTY:
return CellChar.EMPTY;
case CellStates.TEAM_A:
return CellChar.TEAM_A;
case CellStates.TEAM_B:
return CellChar.TEAM_B;
case CellStates.BARRIER:
return CellChar.BARRIER;
default:
throw new TypeError(`Unknown cell state: ${cell}`);
}
}
/**
* Converts a cell char to a cell state.
* @param {!CellChar} cell The cell character.
* @return {!CellStates} The cell state.
* @throws {TypeError} If the cell character is not recognized.
* @final
*/
export function cellCharToCellState(cell) {
switch (cell) {
case CellChar.EMPTY:
return CellStates.EMPTY;
case CellChar.TEAM_A:
return CellStates.TEAM_A;
case CellChar.TEAM_B:
return CellStates.TEAM_B;
case CellChar.BARRIER:
return CellStates.BARRIER;
default:
throw new TypeError(`Unknown cell character: ${cell}`);
}
}
/**
* Converts a simulation board to an array of strings.
* @param {!Board} board The simulation board.
* @return {!Array<string>} The array of strings.
* @final
*/
export function boardToFile(board) {
return board.map(row => row.map(cellStateToCellChar).join('')).join('\n');
}
/**
* Converts an array of strings to a simulation board.
* @param {!Array<string>} file The array of strings.
* @return {!Board} The simulation board.
* @final
*/
export function fileToBoard(file) {
return file.map(row => row.split('').map(cellCharToCellState));
}
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