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/** App.js **/ | |
import React from 'react'; | |
import { DragDropContext } from 'react-beautiful-dnd'; | |
import { HEROES, COMICS } from './custom/data'; | |
import { shuffle, move, GAME_STATE } from './custom/utils'; | |
import Modal from './components/Modal'; | |
import Header from './components/Header'; | |
import Dropzone from './components/Dropzone'; | |
import Footer from './components/Footer'; | |
const GAME_DURATION = 1000 * 30; // 30 seconds | |
const initialState = { | |
// we initialize the state by populating the bench with a shuffled collection of heroes | |
bench: shuffle(HEROES), | |
[COMICS.DC]: [], | |
[COMICS.MARVEL]: [], | |
gameState: GAME_STATE.READY, | |
timeLeft: 0, | |
}; | |
class App extends React.Component { | |
state = initialState; | |
onDragEnd = ({ source, destination }) => { | |
if (!destination) { | |
return; | |
} | |
this.setState(state => { | |
return move(state, source, destination); | |
}); | |
}; | |
render() { | |
const { gameState, timeLeft, bench, ...groups } = this.state; | |
const isDropDisabled = gameState === GAME_STATE.DONE; | |
return ( | |
<> | |
<Header gameState={gameState} timeLeft={timeLeft} endGame={this.endGame} /> | |
{this.state.gameState !== GAME_STATE.PLAYING && ( | |
<Modal | |
startGame={this.startGame} | |
resetGame={this.resetGame} | |
timeLeft={timeLeft} | |
gameState={gameState} | |
groups={groups} | |
/> | |
)} | |
{(this.state.gameState === GAME_STATE.PLAYING || | |
this.state.gameState === GAME_STATE.DONE) && ( | |
<DragDropContext onDragEnd={this.onDragEnd}> | |
<div className="container"> | |
<div className="columns"> | |
<Dropzone | |
id={COMICS.MARVEL} | |
heroes={this.state[COMICS.MARVEL]} | |
isDropDisabled={isDropDisabled} | |
/> | |
<Dropzone id="bench" heroes={bench} isDropDisabled={isDropDisabled} /> | |
<Dropzone | |
id={COMICS.DC} | |
heroes={this.state[COMICS.DC]} | |
isDropDisabled={isDropDisabled} | |
/> | |
</div> | |
</div> | |
</DragDropContext> | |
)} | |
<Footer /> | |
</> | |
); | |
} | |
} | |
export default App; |
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/** custom/utils.js **/ | |
import { HEROES, COMICS } from './data'; | |
// the Knuth shuffle algorithm | |
export function shuffle(array) { | |
let currentIndex = array.length; | |
let temporaryValue; | |
let randomIndex; | |
// While there remain elements to shuffle... | |
while (0 !== currentIndex) { | |
// Pick a remaining element... | |
randomIndex = Math.floor(Math.random() * currentIndex); | |
currentIndex -= 1; | |
// And swap it with the current element. | |
temporaryValue = array[currentIndex]; | |
array[currentIndex] = array[randomIndex]; | |
array[randomIndex] = temporaryValue; | |
} | |
return array; | |
} | |
// method to handle to the heroe cards movement | |
export const move = (state, source, destination) => { | |
const srcListClone = [...state[source.droppableId]]; | |
const destListClone = | |
source.droppableId === destination.droppableId | |
? srcListClone | |
: [...state[destination.droppableId]]; | |
const [movedElement] = srcListClone.splice(source.index, 1); | |
destListClone.splice(destination.index, 0, movedElement); | |
return { | |
[source.droppableId]: srcListClone, | |
...(source.droppableId === destination.droppableId | |
? {} | |
: { | |
[destination.droppableId]: destListClone, | |
}), | |
}; | |
}; | |
// enums for representing the game state | |
export const GAME_STATE = { | |
READY: 'ready', | |
PLAYING: 'playing', | |
DONE: 'done', | |
}; |
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