No te salgas del mapa

Clase 11 de 24 • Taller Práctico de JavaScript: ¡Crea tu Primer Videojuego!

Eduard Barrios

student•

cuando lo cambiaba de pantalla de un monitor a otro se rompía y se salía, así que esta fue mi solución:

function moveUp(){
    if(Math.floor(playerPosicion.y) > elementSize){
        

        playerPosicion.y = (playerPosicion.y - elementSize) 
        
        movePlayer()
    }
    
}
function moveLeft(){
    if(Math.floor(playerPosicion.x) > elementSize){
        

        playerPosicion.x = (playerPosicion.x - elementSize) 
        
        movePlayer()
    }
}
function moveRight(){
    if(Math.ceil(playerPosicion.x)< 10*elementSize){
        

        playerPosicion.x = (playerPosicion.x + elementSize) 
        
        movePlayer()
    }
}
function moveDown(){
    if(Math.ceil(playerPosicion.y) < 10*elementSize){
        

        playerPosicion.y = (playerPosicion.y + elementSize) 
        
        movePlayer()
    }
}

Santiago Velásquez Serna

student•

Yo lo hice directamente en la función movePlayer; De cualquier forma ella es la encargada de renderizar la calavera

Fernando Yutiz

student•

Estoy pensando en darle otro enfoque. En vez de verificar coordenadas de Canvas, quizá mejor sea ver los limites en el array bidimensional que seria el verdadero mapa del juego.

Laura Roa

student•

No se si sea la unica pero esto me pasa, incluso borrando todo mi codigo y pegando el del profe la calabera no sube desde la linea azul de la imagen. Les ha pasado lo mismo?

Juan Castro

teacher•

Lau, eso también me pasó por los decimales. Compártenos por fa tu código y te ayudamos a revisar. En resumen hay que quitar todos los decimales posibles de todas las partes posibles del código para que en nuestros condicionales no pase nada raro y nos permita movernos correctamente. Mira: https://platzi.com/clases/3573-javascript-practico-videojuegos/52359-depurando-errores-del-juego/

Laura Roa

student•

Que bueno profe saber que el error lo corregimos mas adelante! Debido a que la pantalla de mi monitor es muy grande tuve el problema desde el inicio (Me tocaba achiquitar la pantalla para que funcionara) Ya vi la clase Depurando errores del juego e hice lo que recomendaste y el codigo funciono! Este es el resultado: (cambie unas variables a ingles!)

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="./styles.css">
    <title>VideoGame Project</title>
</head>
<body>
    <div class="game-container">
        <canvas id="game"></canvas>
        <div class="btns">
            <button id="up">Up</button>
            <button id="left">Left</button>
            <button id="right">Right</button>
            <button id="down">Down</button>
        </div>
        <div class="messages">
            <p>lives: <span id="lives"></span></p>
            <p>Time: ⏰: <span id="time"></span></p>
            <p>Record: 🏁<span id="record"></span></p>
            <p id="result"></p>
        </div>
    </div>
    <script src="./maps.js"></script>
    <script src="./game.js"></script>
</body>
</html>

game.js

const canvas = document.querySelector('#game');
const game = canvas.getContext('2d');
const upButton = document.querySelector ('#up');
const rightButton = document.querySelector ('#right');
const leftButton = document.querySelector ('#left');
const downButton = document.querySelector ('#down');
const spanLives = document.querySelector('#lives')
const spanTime = document.querySelector('#time');
const spanRecord = document.querySelector('#record');
const pResult = document.querySelector('#result');

let canvasSize;
let elementsSize;
let level = 0;
let lives = 3;

let timeStart;
let timePlayer;
let timeInterval;


const playerPosition = {
  x: undefined,
  y: undefined,
};
const giftPosition = {
  x: undefined,
  y: undefined,
};
let enemyPositions = [];

window.addEventListener('load', setCanvasSize);
window.addEventListener('resize', setCanvasSize);

function fixNumber(n) {
  return Number(n.toFixed(0));
}

function setCanvasSize() {
  if (window.innerHeight > window.innerWidth) {
    canvasSize = window.innerWidth * 0.7;
  } else {
    canvasSize = window.innerHeight * 0.7;
  }
  canvasSize = Number(canvasSize.toFixed(0));
  
  canvas.setAttribute('width', canvasSize);
  canvas.setAttribute('height', canvasSize);
  
  elementsSize = fixNumber(canvasSize / 10);
  
  playerPosition.x = undefined;
  playerPosition.y = undefined;

  startGame();
}

function startGame() {
  console.log({ canvasSize, elementsSize });
  console.log(window.innerWidth, window.innerHeight);
  game.font = elementsSize + 'px Verdana';
  game.textAlign = 'end';
  
  const map = maps[level];
  if (!map) {
    gameWin();
    return;
  }

  if (!timeStart) {
    timeStart = Date.now();
    timeInterval = setInterval(showTime, 100);
    showRecord();
  }
  const mapRows = map.trim().split('\n');
  const mapRowCols = mapRows.map(row => row.trim().split(''));
  console.log({map, mapRows, mapRowCols});

  showLives();
  
  enemyPositions = [];

  game.clearRect(0, 0, canvasSize, canvasSize);
  mapRowCols.forEach((row, rowI) => {
    row.forEach((col, colI) => {
      const emoji = emojis[col];
      const posX = fixNumber(elementsSize * (colI + 1));
      const posY = fixNumber(elementsSize * (rowI + 1));

      if (col == 'O') {
        if (!playerPosition.x && !playerPosition.y) {
          playerPosition.x = fixNumber(posX);
          playerPosition.y = fixNumber(posY);
          console.log({playerPosition});
        }
      } else if (col == 'I') {
        giftPosition.x = fixNumber(posX);
        giftPosition.y = fixNumber(posY);
      } else if(col == 'X') {
        enemyPositions.push ({
          x: fixNumber(posX),
          y: fixNumber(posY),
        });
      }
      
      game.fillText(emoji, posX, posY);
    });
  });

  movePlayer();
}

function movePlayer() {
  const giftCollisionX = playerPosition.x.toFixed(3) == giftPosition.x.toFixed(3);
  const giftCollisionY = playerPosition.y.toFixed(3) == giftPosition.y.toFixed(3);
  const giftCollision = giftCollisionX && giftCollisionY;

  if(giftCollision) {
    winningLevel();
  } 
  const enemyCollision = enemyPositions.find(enemy => {
    const enemyCollisionX =  enemy.x.toFixed(3) == playerPosition.x.toFixed(3);
    const enemyCollisionY = enemy.y.toFixed(3) == playerPosition.y.toFixed(3);
    return enemyCollisionX && enemyCollisionY;
  });

  if(enemyCollision) {
    levelFail();
  }

  game.fillText(emojis['PLAYER'], playerPosition.x, playerPosition.y);
  
}

function winningLevel() {
  console.log('Level up');
  level ++;
  startGame();
}

function levelFail() {
  console.log("ENEMY!")
  lives--;

  console.log(lives)
  if(lives <= 0) {
    level = 0;
    lives = 3;
    timeStart=  undefined;
  }
  playerPosition.x = undefined;
  playerPosition.y = undefined;
  startGame();
}
function gameWin() {
  console.log('¡Terminaste el juego!');
  clearInterval(timeInterval);

  const recordTime = localStorage.getItem('record_time');
  const playerTime = Date.now() - timeStart;

  if (recordTime) {
    if (recordTime >= playerTime) {
      localStorage.setItem('record_time', playerTime)
      pResult.innerHTML ='you made a new record! Congratulations!';
     } else {
      pResult.innerHTML ='Sorry, this is not a record';
     }
  } else {
    localStorage.setItem('record_time', playerTime)
    pResult.innerHTML = 'first time playing? Try to get a new record';
  }

  console.log({recordTime, playerTime});
}

function showLives() {
  const heartsArray = Array(lives).fill(emojis['HEART']);
  console.log(heartsArray);

  spanLives.innerHTML = "";
  heartsArray.forEach(heart => spanLives.append(heart))
  
}
function showTime() {
  spanTime.innerHTML = Date.now() - timeStart;
}
function showRecord() {
  spanRecord.innerHTML = localStorage.getItem('record_time');
}

  //rowI and colI are the index
  
  // for (let row = 1; row <= 10; row++) {
    //   for (let col = 1; col <= 10; col++) {
      //     game.fillText(emojis[mapRowCols[row - 1][col - 1]], elementsSize * col, elementsSize * row);
      //   }
      // }
    
window.addEventListener('keydown', moveByKeys);
upButton.addEventListener('click', moveUp);
rightButton.addEventListener('click', moveRight);
leftButton.addEventListener('click', moveLeft);
downButton.addEventListener('click', moveDown);

function moveByKeys (event) {
  if(event.key == 'ArrowUp') moveUp();
   else if (event.key == 'ArrowRight') moveRight();
   else if (event.key == 'ArrowLeft')  moveLeft();
   else if (event.key == 'ArrowDown') moveDown();
}
  //console.log(event)

  function moveUp() {
    console.log('Moving up');
  
    if ((playerPosition.y - elementsSize) < elementsSize) {
      console.log('OUT');
    } else {
      playerPosition.y -= elementsSize;
      startGame();
    }
  }
  function moveLeft() {
    console.log('moving left');
  
    if ((playerPosition.x - elementsSize) < 20) {
      console.log('OUT');
    } else {
      playerPosition.x -= elementsSize;
      startGame();
    }
  }
  function moveRight() {
    console.log('moving right');
  
    if ((playerPosition.x + elementsSize) > canvasSize) {
      console.log(elementsSize)
      console.log('OUT');
    } else {
      playerPosition.x += elementsSize;
      startGame();
    }
  }
  function moveDown() {
    console.log('moving down');
    
    if ((playerPosition.y + elementsSize) > canvasSize) {
      console.log('OUT');
    } else {
      playerPosition.y += elementsSize;
      startGame();
    }
  }

Luis Angel Santillan

student•

Por alguna extranha razon no me funcionaba como se resolvio en este video de ejemplo entonces opte por hacer lo siguiente....

Tommy Toala Cox

student•

Yo ps solo le puse con ternarias, y en lugar del mensaje, le puse que esa posición sea igual al tamaño del elemento, porque me estaba dando unos decimales diferentes.

function moveUp() {
    console.log(canvasElement, map.playerPosition.x)
    map.playerPosition.x - canvasElement<canvasElement
        ? map.playerPosition.x = canvasElement
        : map.playerPosition.x -= canvasElement

    startGame()
}
function moveLeft() {
    map.playerPosition.y - canvasElement<canvasElement
        ? map.playerPosition.y = canvasElement
        : map.playerPosition.y -= canvasElement
    startGame()
}
function moveRight() {
    map.playerPosition.y + canvasElement>canvasSize
        ? map.playerPosition.y = canvasSize
        : map.playerPosition.y += canvasElement
    startGame()
}
function moveDown() {
    map.playerPosition.x + canvasElement>canvasSize
        ? map.playerPosition.x = canvasSize
        : map.playerPosition.x += canvasElement
    startGame()
}

Jhon Eduard Bocanegra Ortiz

student•

Asi lo hice:

ANA RAMIREZ

student•

yo solucioné de esta forma:

Fernando Steven Ochoa Montoya

student•

Hola , les comparto una manera que yo pienso es un poco mas corta , pero funciona.

function moveUp() {
    console.log("moveUp");
    playerPosition.y -= elementSize;
    if (playerPosition.y < 0) {
        playerPosition.y += elementSize;
    }
    startGame();
}
function moveDown(){
    console.log("moveDown");
    playerPosition.y += elementSize;
    if (playerPosition.y > elementSize * 10) {
        playerPosition.y -= elementSize;
    }
    startGame();

}
function moveRight(){
    console.log("moveRight");
    playerPosition.x += elementSize;
    if (playerPosition.x > elementSize * 11) {
        playerPosition.x -= elementSize;
    }
    startGame();
}
function moveLeft() {
    console.log("moveLeft");
    playerPosition.x -= elementSize;
    if (playerPosition.x <= elementSize) {
        playerPosition.x += elementSize;
    }
    startGame();
}

Emilio Sala

student•

Para que sea responsive cambié la posicion del jugador de absoluta como lo hizo en clase a posicion de la matriz

if (col === "O" && playerPos.x === undefined && playerPos.y === undefined) {
  playerPos.x = colIdx;
  playerPos.y = rowIdx+1; 
//hay un +1 por la forma de mi matriz
}

entonces la funcion mover arriba, abajo etc sería en unidades

function moveUp() {
  if (playerPos.y > 1) {
    playerPos.y -= 1;
    drawMap();
  }
}
function moveDown() {
  if (playerPos.y  < 10) {
    playerPos.y += 1;
    drawMap();
  }
}

Miguel Enrique Velásquez Millán

student•

No sé si mi solución quizás sea demasiado rebuscada, pero al menos a mí me gusta, je je, e igualmente funciona~ La dejaré por aquí:

let mapLimits = {
	up: null,
	left: null,
	right: null,
	down: null
};
// Este es un objeto global que indica los límites del mapa~

startGame() {
...
mapLimits.up = elementSize * 1;
mapLimits.left = elementSize * 1;
mapLimits.right = elementSize * 10;
mapLimits.down = elementSize * 10;
...
}
// Dentro de la función "startGame" se indican cuáles son esos límites una vez ya sabemos el tamaño del Canvas (acorde al tamaño de la pantalla del usuario).

function moveByKeys(keyEvent) {
	switch (keyEvent.code){
		case "ArrowUp":
			movePlayer("up");
			// console.log("arriba");
			break;
		case "ArrowLeft":
			movePlayer("left");
			// console.log("izquierda");
			break;
		case "ArrowRight":
			movePlayer("right");
			// console.log("derecha");
			break;
		case "ArrowDown":
			movePlayer("down");
			// console.log("abajo");
			break;
	}
}
// En vez de tener una 4 funciones diferentes (moveUp, moveLeft, moveRight, moveDown), tengo una sola función "movePlayer" que recibe como parámetro la dirección a la cual se quiere mover el jugador.

function movePlayer(direction) {	
	switch(direction) {
		case "up":
			if ( (playerPos.y - gridSize) >= mapLimits.up ) {
				playerPos.y -= gridSize;
				renderPlayer();
			}
			break;
			
		case "left":
			if ( (playerPos.x - gridSize) >= mapLimits.left) {
				playerPos.x -= gridSize;
				renderPlayer();
			}
			break;
			
		case "right":
			if ( (playerPos.x + gridSize) <= mapLimits.right) {
				playerPos.x += gridSize;
				renderPlayer();
			}
			break;
			
		case "down":
			if ( (playerPos.y + gridSize) <= mapLimits.down) {
				playerPos.y += gridSize;
				renderPlayer();
			}
			break;
	}

	function renderPlayer() {
		startGame();
		game.fillText(emojis["PLAYER"], playerPos.x, playerPos.y);
	}	
}

// Y dentro de esta función se verifica si la dirección a la cual se quiere mover el jugador se encuentra dentro de los límites del mapa. Si es así, se mueve sin problemas, pero si no, entonces no se mueve.

Nestor Rios Garcia

student•

Así lo solucioné

function mapLimit() {
    const canvasLimit = elementSize* 10
    if (playerPosition.x >= canvasLimit) {
        playerPosition.x -= elementSize
    }
    if (playerPosition.x < 0) {
        playerPosition.x += elementSize
    }
    if (playerPosition.y >= canvasLimit) {
        playerPosition.y -= elementSize
    }
    if (playerPosition.y < 0) {
        playerPosition.y += elementSize
    }
}

La llamaría después de detectar el movimiento

function movePlayer(direction) {
    moves++
    switch (direction) {
        case 'moveUp':
            playerPosition.y -= elementSize
            break;
        case 'moveLeft':
            playerPosition.x -= elementSize
            break;
        case 'moveRight':
            playerPosition.x += elementSize
            break;
        case 'moveDown':
            playerPosition.y += elementSize
            break;
        default:
            break;
    }
    mapLimit()
    printMap()
    game.fillText(emojis['PLAYER'], playerPosition.x, playerPosition.y)
}

Matías Wasiak

student•

Una alternativa

function startGame() {
  game.font = `${elementsSize}px Verdana`;
  game.textAlign = "end";

  const map = maps[0];
  const mapRows = map.trim().split("\n");
  const mapRowCols = mapRows.map((row) => row.trim().split(""));

  game.clearRect(0, 0, canvasSize, canvasSize);

  mapRowCols.forEach((row, rowIndex) => {
    row.forEach((col, colIndex) => {
      if (col == "O") {
        if (playerPosition.x === undefined) {
          playerPosition.x = colIndex;
          playerPosition.y = rowIndex;
        }
      }

      game.fillText(
        emojis[col],
        elementsSize * (colIndex + 1),
        elementsSize * (rowIndex + 1)
      );
    });
  });

  movePlayer();
}

function movePlayer() {
  game.fillText(
    emojis["PLAYER"],
    elementsSize * (playerPosition.x + 1),
    elementsSize * (playerPosition.y + 1)
  );
}

window.addEventListener("keydown", move);
btnUp.addEventListener("click", moveUp);
btnLeft.addEventListener("click", moveLeft);
btnRight.addEventListener("click", moveRight);
btnDown.addEventListener("click", moveDown);

function move(event) {
  switch (event.key) {
    // UP
    case "ArrowUp":
      moveUp();
      break;
    case "w":
      moveUp();
      break;

    // LEFT
    case "ArrowLeft":
      moveLeft();
      break;
    case "a":
      moveLeft();
      break;

    // RIGHT
    case "ArrowRight":
      moveRight();
      break;
    case "d":
      moveRight();
      break;

    // DOWN
    case "ArrowDown":
      moveDown();
      break;
    case "s":
      moveDown();
      break;
  }
}

function moveUp() {
  if (playerPosition.y === 0) {
    return;
  }

  playerPosition.y--;
  startGame();
}

function moveLeft() {
  if (playerPosition.x === 0) {
    return;
  }

  playerPosition.x--;
  startGame();
}

function moveRight() {
  if (playerPosition.x === 9) {
    return;
  }

  playerPosition.x++;
  startGame();
}

function moveDown() {
  if (playerPosition.y === 9) {
    return;
  }

  playerPosition.y++;
  startGame();
}

Sara Paola Segura Devia

student•

Esta fue mi solución

<function moveUp() {
  if (playerPosition.y < elementsSize) return console.log("Llegamos al limite");
  playerPosition.y -= elementsSize;
  console.log("Me quiero mover hacia arriba");
  startGame();
}

function moveLeft() {
  if (playerPosition.x == elementsSize)
    return console.log("Llegamos al limite");
  playerPosition.x -= elementsSize;
  console.log("Me quiero mover hacia izquierda");
  startGame();
}

function moveRight() {
  if (playerPosition.x > canvasSize) return console.log("Llegamos al limite");
  playerPosition.x += elementsSize;
  console.log("Me quiero mover hacia derecha");
  startGame();
}

function moveDown() {
  if (playerPosition.y == canvasSize) return console.log("Llegamos al limite");
  playerPosition.y += elementsSize;
  console.log("Me quiero mover hacia abajo");
  startGame();
}>

Juan José Gómez Aguirre

student•

Por temas de legibilidad y complejidad el if que se tiene para cada metodo que mueve el jugador se puede optimizar, ya que, que si no queremos que imprima ''OUT'' por ejemplo quedaria vació, por lo que se puede optimizar de la siguiente manera.

if (!(playerPosition.x - elementsSize) < elementsSize) {
	playerPosition.x -= elementsSize;
	startGame();
}

Juan Mercado

student•

Mi triste solucion :(

if(emoji == 'O'){
                if(playerPosition.x > canvasSize){
                    playerPosition.x = canvasSize - 10
                    alert('NO TE SALGAS DEL MAPAAAAA!')
                }else if(playerPosition.y > canvasSize){
                    playerPosition.y = canvasSize - 10
                    alert('NO TE SALGAS DEL MAPAAAAA!')
                }else if( playerPosition.y <= 0){
                    playerPosition.y = playerPosition.y + elementsSize
                    alert('NO TE SALGAS DEL MAPAAAAA!')
                }else if(playerPosition.x <=0){
                    playerPosition.x = playerPosition.x + elementsSize
                    alert('NO TE SALGAS DEL MAPAAAAA!')
                }else{
                    if(!playerPosition.x && !playerPosition.y){
                        playerPosition.x = posX
                        playerPosition.y = posY
                    }
                }

Rodrigo Alejandro Alvarado Liñan

student•

Una alternativa que se me ocurrió, no sé que tan bien este:

function startGame() {

    game.font = elementsSize + 'px Verdana';
    game.textAlign = 'end';

    const map = maps[0];
    const mapRows = map.trim().split('\n');
    const mapRowsCols = mapRows.map( row => row.trim().split(''));

    game.clearRect(0,0,canvasSize, canvasSize)

    mapRowsCols.forEach((row, rowI) => {
        row.forEach((col, colI) => {
            const emoji = emojis[col];
            const posX = elementsSize * (colI + 1);
            const posY =elementsSize * (rowI + 1);

            if (col == 'O') {
                if(!playerPosition.x && !playerPosition.y) {
                    playerPosition.x = posX;
                    playerPosition.y = posY;
                    console.log({playerPosition});
                }
              }
              
              game.fillText(emoji, posX, posY);
            });
        });
        
        if(playerPosition.x > canvasSize) playerPosition.x -= elementsSize; 
        if(playerPosition.x < (elementsSize)-1) playerPosition.x += elementsSize; 
        if(playerPosition.y > canvasSize) playerPosition.y -= elementsSize
        if(playerPosition.y < (elementsSize)-1)  playerPosition.y += elementsSize

    movePlayer();

}

Cristian Zapata

student•

Mi solución aprovechando la variable canvasSize que ya tenemos:


function moveUp(){
    if(playerPosition.y > elementsSize) {
        playerPosition.y -= elementsSize;
        startGame();
    }
    
}
function moveLeft(){
    if(playerPosition.x > elementsSize){
        playerPosition.x -= elementsSize;
        startGame();
    }
}
function moveRight(){
    if(playerPosition.x < canvasSize){
        playerPosition.x += elementsSize;
        startGame();
    }
}
function moveDown(){
    if(playerPosition.y < canvasSize) {
        playerPosition.y += elementsSize;
        startGame();
    }
}

Andrés Toledo Margalef

student•

Yo tengo el game.textAlign = "start"

entonces, tuve que modificar el codigo

function moveUp() {
  if(playerPosition.y > elementsSize ){
    playerPosition.y -= elementsSize
    startGame()
  }
}
function moveLeft() {
  if(!playerPosition.x == 0 ){
  playerPosition.x -= elementsSize
  startGame()}
}
function moveRight() {
  if(playerPosition.x < (canvasSize -elementsSize) ){
  playerPosition.x += elementsSize
  startGame()}
}
function moveDown() {
  if(playerPosition.y < (canvasSize -elementsSize) ){
  playerPosition.y += elementsSize
  startGame()}
}

Victor Hugo Cruz Carballo

student•

function moveUp(){
  console.log('arriba')
  if(elemtSize<playerPos.y){
    playerPos.y -= elemtSize;
    startGame();
  }
}

function moveLeft(){
  console.log('izquierda')
  if(elemtSize<playerPos.x-elemtSize){
    playerPos.x -= elemtSize;
    startGame();
  }
}

function moveRight(){
  console.log('derecha')
  if(canvasSize>playerPos.x){
    playerPos.x += elemtSize;
    startGame();
  }
}

function moveDown(){
  console.log('abajo')
  if(canvasSize>playerPos.y+elemtSize){
    playerPos.y += elemtSize;
    startGame();
  }
}

function moveUp(){
    if(Math.floor(playerPosicion.y) > elementSize){
        

        playerPosicion.y = (playerPosicion.y - elementSize) 
        
        movePlayer()
    }
    
}
function moveLeft(){
    if(Math.floor(playerPosicion.x) > elementSize){
        

        playerPosicion.x = (playerPosicion.x - elementSize) 
        
        movePlayer()
    }
}
function moveRight(){
    if(Math.ceil(playerPosicion.x)< 10*elementSize){
        

        playerPosicion.x = (playerPosicion.x + elementSize) 
        
        movePlayer()
    }
}
function moveDown(){
    if(Math.ceil(playerPosicion.y) < 10*elementSize){
        

        playerPosicion.y = (playerPosicion.y + elementSize) 
        
        movePlayer()
    }
}

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="./styles.css">
    <title>VideoGame Project</title>
</head>
<body>
    <div class="game-container">
        <canvas id="game"></canvas>
        <div class="btns">
            <button id="up">Up</button>
            <button id="left">Left</button>
            <button id="right">Right</button>
            <button id="down">Down</button>
        </div>
        <div class="messages">
            <p>lives: <span id="lives"></span></p>
            <p>Time: ⏰: <span id="time"></span></p>
            <p>Record: 🏁<span id="record"></span></p>
            <p id="result"></p>
        </div>
    </div>
    <script src="./maps.js"></script>
    <script src="./game.js"></script>
</body>
</html>

const canvas = document.querySelector('#game');
const game = canvas.getContext('2d');
const upButton = document.querySelector ('#up');
const rightButton = document.querySelector ('#right');
const leftButton = document.querySelector ('#left');
const downButton = document.querySelector ('#down');
const spanLives = document.querySelector('#lives')
const spanTime = document.querySelector('#time');
const spanRecord = document.querySelector('#record');
const pResult = document.querySelector('#result');

let canvasSize;
let elementsSize;
let level = 0;
let lives = 3;

let timeStart;
let timePlayer;
let timeInterval;


const playerPosition = {
  x: undefined,
  y: undefined,
};
const giftPosition = {
  x: undefined,
  y: undefined,
};
let enemyPositions = [];

window.addEventListener('load', setCanvasSize);
window.addEventListener('resize', setCanvasSize);

function fixNumber(n) {
  return Number(n.toFixed(0));
}

function setCanvasSize() {
  if (window.innerHeight > window.innerWidth) {
    canvasSize = window.innerWidth * 0.7;
  } else {
    canvasSize = window.innerHeight * 0.7;
  }
  canvasSize = Number(canvasSize.toFixed(0));
  
  canvas.setAttribute('width', canvasSize);
  canvas.setAttribute('height', canvasSize);
  
  elementsSize = fixNumber(canvasSize / 10);
  
  playerPosition.x = undefined;
  playerPosition.y = undefined;

  startGame();
}

function startGame() {
  console.log({ canvasSize, elementsSize });
  console.log(window.innerWidth, window.innerHeight);
  game.font = elementsSize + 'px Verdana';
  game.textAlign = 'end';
  
  const map = maps[level];
  if (!map) {
    gameWin();
    return;
  }

  if (!timeStart) {
    timeStart = Date.now();
    timeInterval = setInterval(showTime, 100);
    showRecord();
  }
  const mapRows = map.trim().split('\n');
  const mapRowCols = mapRows.map(row => row.trim().split(''));
  console.log({map, mapRows, mapRowCols});

  showLives();
  
  enemyPositions = [];

  game.clearRect(0, 0, canvasSize, canvasSize);
  mapRowCols.forEach((row, rowI) => {
    row.forEach((col, colI) => {
      const emoji = emojis[col];
      const posX = fixNumber(elementsSize * (colI + 1));
      const posY = fixNumber(elementsSize * (rowI + 1));

      if (col == 'O') {
        if (!playerPosition.x && !playerPosition.y) {
          playerPosition.x = fixNumber(posX);
          playerPosition.y = fixNumber(posY);
          console.log({playerPosition});
        }
      } else if (col == 'I') {
        giftPosition.x = fixNumber(posX);
        giftPosition.y = fixNumber(posY);
      } else if(col == 'X') {
        enemyPositions.push ({
          x: fixNumber(posX),
          y: fixNumber(posY),
        });
      }
      
      game.fillText(emoji, posX, posY);
    });
  });

  movePlayer();
}

function movePlayer() {
  const giftCollisionX = playerPosition.x.toFixed(3) == giftPosition.x.toFixed(3);
  const giftCollisionY = playerPosition.y.toFixed(3) == giftPosition.y.toFixed(3);
  const giftCollision = giftCollisionX && giftCollisionY;

  if(giftCollision) {
    winningLevel();
  } 
  const enemyCollision = enemyPositions.find(enemy => {
    const enemyCollisionX =  enemy.x.toFixed(3) == playerPosition.x.toFixed(3);
    const enemyCollisionY = enemy.y.toFixed(3) == playerPosition.y.toFixed(3);
    return enemyCollisionX && enemyCollisionY;
  });

  if(enemyCollision) {
    levelFail();
  }

  game.fillText(emojis['PLAYER'], playerPosition.x, playerPosition.y);
  
}

function winningLevel() {
  console.log('Level up');
  level ++;
  startGame();
}

function levelFail() {
  console.log("ENEMY!")
  lives--;

  console.log(lives)
  if(lives <= 0) {
    level = 0;
    lives = 3;
    timeStart=  undefined;
  }
  playerPosition.x = undefined;
  playerPosition.y = undefined;
  startGame();
}
function gameWin() {
  console.log('¡Terminaste el juego!');
  clearInterval(timeInterval);

  const recordTime = localStorage.getItem('record_time');
  const playerTime = Date.now() - timeStart;

  if (recordTime) {
    if (recordTime >= playerTime) {
      localStorage.setItem('record_time', playerTime)
      pResult.innerHTML ='you made a new record! Congratulations!';
     } else {
      pResult.innerHTML ='Sorry, this is not a record';
     }
  } else {
    localStorage.setItem('record_time', playerTime)
    pResult.innerHTML = 'first time playing? Try to get a new record';
  }

  console.log({recordTime, playerTime});
}

function showLives() {
  const heartsArray = Array(lives).fill(emojis['HEART']);
  console.log(heartsArray);

  spanLives.innerHTML = "";
  heartsArray.forEach(heart => spanLives.append(heart))
  
}
function showTime() {
  spanTime.innerHTML = Date.now() - timeStart;
}
function showRecord() {
  spanRecord.innerHTML = localStorage.getItem('record_time');
}

  //rowI and colI are the index
  
  // for (let row = 1; row <= 10; row++) {
    //   for (let col = 1; col <= 10; col++) {
      //     game.fillText(emojis[mapRowCols[row - 1][col - 1]], elementsSize * col, elementsSize * row);
      //   }
      // }
    
window.addEventListener('keydown', moveByKeys);
upButton.addEventListener('click', moveUp);
rightButton.addEventListener('click', moveRight);
leftButton.addEventListener('click', moveLeft);
downButton.addEventListener('click', moveDown);

function moveByKeys (event) {
  if(event.key == 'ArrowUp') moveUp();
   else if (event.key == 'ArrowRight') moveRight();
   else if (event.key == 'ArrowLeft')  moveLeft();
   else if (event.key == 'ArrowDown') moveDown();
}
  //console.log(event)

  function moveUp() {
    console.log('Moving up');
  
    if ((playerPosition.y - elementsSize) < elementsSize) {
      console.log('OUT');
    } else {
      playerPosition.y -= elementsSize;
      startGame();
    }
  }
  function moveLeft() {
    console.log('moving left');
  
    if ((playerPosition.x - elementsSize) < 20) {
      console.log('OUT');
    } else {
      playerPosition.x -= elementsSize;
      startGame();
    }
  }
  function moveRight() {
    console.log('moving right');
  
    if ((playerPosition.x + elementsSize) > canvasSize) {
      console.log(elementsSize)
      console.log('OUT');
    } else {
      playerPosition.x += elementsSize;
      startGame();
    }
  }
  function moveDown() {
    console.log('moving down');
    
    if ((playerPosition.y + elementsSize) > canvasSize) {
      console.log('OUT');
    } else {
      playerPosition.y += elementsSize;
      startGame();
    }
  }

function moveUp() {
    console.log(canvasElement, map.playerPosition.x)
    map.playerPosition.x - canvasElement<canvasElement
        ? map.playerPosition.x = canvasElement
        : map.playerPosition.x -= canvasElement

    startGame()
}
function moveLeft() {
    map.playerPosition.y - canvasElement<canvasElement
        ? map.playerPosition.y = canvasElement
        : map.playerPosition.y -= canvasElement
    startGame()
}
function moveRight() {
    map.playerPosition.y + canvasElement>canvasSize
        ? map.playerPosition.y = canvasSize
        : map.playerPosition.y += canvasElement
    startGame()
}
function moveDown() {
    map.playerPosition.x + canvasElement>canvasSize
        ? map.playerPosition.x = canvasSize
        : map.playerPosition.x += canvasElement
    startGame()
}

function moveUp() {
    console.log("moveUp");
    playerPosition.y -= elementSize;
    if (playerPosition.y < 0) {
        playerPosition.y += elementSize;
    }
    startGame();
}
function moveDown(){
    console.log("moveDown");
    playerPosition.y += elementSize;
    if (playerPosition.y > elementSize * 10) {
        playerPosition.y -= elementSize;
    }
    startGame();

}
function moveRight(){
    console.log("moveRight");
    playerPosition.x += elementSize;
    if (playerPosition.x > elementSize * 11) {
        playerPosition.x -= elementSize;
    }
    startGame();
}
function moveLeft() {
    console.log("moveLeft");
    playerPosition.x -= elementSize;
    if (playerPosition.x <= elementSize) {
        playerPosition.x += elementSize;
    }
    startGame();
}

let mapLimits = {
	up: null,
	left: null,
	right: null,
	down: null
};
// Este es un objeto global que indica los límites del mapa~

startGame() {
...
mapLimits.up = elementSize * 1;
mapLimits.left = elementSize * 1;
mapLimits.right = elementSize * 10;
mapLimits.down = elementSize * 10;
...
}
// Dentro de la función "startGame" se indican cuáles son esos límites una vez ya sabemos el tamaño del Canvas (acorde al tamaño de la pantalla del usuario).

function moveByKeys(keyEvent) {
	switch (keyEvent.code){
		case "ArrowUp":
			movePlayer("up");
			// console.log("arriba");
			break;
		case "ArrowLeft":
			movePlayer("left");
			// console.log("izquierda");
			break;
		case "ArrowRight":
			movePlayer("right");
			// console.log("derecha");
			break;
		case "ArrowDown":
			movePlayer("down");
			// console.log("abajo");
			break;
	}
}
// En vez de tener una 4 funciones diferentes (moveUp, moveLeft, moveRight, moveDown), tengo una sola función "movePlayer" que recibe como parámetro la dirección a la cual se quiere mover el jugador.

function movePlayer(direction) {	
	switch(direction) {
		case "up":
			if ( (playerPos.y - gridSize) >= mapLimits.up ) {
				playerPos.y -= gridSize;
				renderPlayer();
			}
			break;
			
		case "left":
			if ( (playerPos.x - gridSize) >= mapLimits.left) {
				playerPos.x -= gridSize;
				renderPlayer();
			}
			break;
			
		case "right":
			if ( (playerPos.x + gridSize) <= mapLimits.right) {
				playerPos.x += gridSize;
				renderPlayer();
			}
			break;
			
		case "down":
			if ( (playerPos.y + gridSize) <= mapLimits.down) {
				playerPos.y += gridSize;
				renderPlayer();
			}
			break;
	}

	function renderPlayer() {
		startGame();
		game.fillText(emojis["PLAYER"], playerPos.x, playerPos.y);
	}	
}

// Y dentro de esta función se verifica si la dirección a la cual se quiere mover el jugador se encuentra dentro de los límites del mapa. Si es así, se mueve sin problemas, pero si no, entonces no se mueve.

function mapLimit() {
    const canvasLimit = elementSize* 10
    if (playerPosition.x >= canvasLimit) {
        playerPosition.x -= elementSize
    }
    if (playerPosition.x < 0) {
        playerPosition.x += elementSize
    }
    if (playerPosition.y >= canvasLimit) {
        playerPosition.y -= elementSize
    }
    if (playerPosition.y < 0) {
        playerPosition.y += elementSize
    }
}

function movePlayer(direction) {
    moves++
    switch (direction) {
        case 'moveUp':
            playerPosition.y -= elementSize
            break;
        case 'moveLeft':
            playerPosition.x -= elementSize
            break;
        case 'moveRight':
            playerPosition.x += elementSize
            break;
        case 'moveDown':
            playerPosition.y += elementSize
            break;
        default:
            break;
    }
    mapLimit()
    printMap()
    game.fillText(emojis['PLAYER'], playerPosition.x, playerPosition.y)
}

function startGame() {
  game.font = `${elementsSize}px Verdana`;
  game.textAlign = "end";

  const map = maps[0];
  const mapRows = map.trim().split("\n");
  const mapRowCols = mapRows.map((row) => row.trim().split(""));

  game.clearRect(0, 0, canvasSize, canvasSize);

  mapRowCols.forEach((row, rowIndex) => {
    row.forEach((col, colIndex) => {
      if (col == "O") {
        if (playerPosition.x === undefined) {
          playerPosition.x = colIndex;
          playerPosition.y = rowIndex;
        }
      }

      game.fillText(
        emojis[col],
        elementsSize * (colIndex + 1),
        elementsSize * (rowIndex + 1)
      );
    });
  });

  movePlayer();
}

function movePlayer() {
  game.fillText(
    emojis["PLAYER"],
    elementsSize * (playerPosition.x + 1),
    elementsSize * (playerPosition.y + 1)
  );
}

window.addEventListener("keydown", move);
btnUp.addEventListener("click", moveUp);
btnLeft.addEventListener("click", moveLeft);
btnRight.addEventListener("click", moveRight);
btnDown.addEventListener("click", moveDown);

function move(event) {
  switch (event.key) {
    // UP
    case "ArrowUp":
      moveUp();
      break;
    case "w":
      moveUp();
      break;

    // LEFT
    case "ArrowLeft":
      moveLeft();
      break;
    case "a":
      moveLeft();
      break;

    // RIGHT
    case "ArrowRight":
      moveRight();
      break;
    case "d":
      moveRight();
      break;

    // DOWN
    case "ArrowDown":
      moveDown();
      break;
    case "s":
      moveDown();
      break;
  }
}

function moveUp() {
  if (playerPosition.y === 0) {
    return;
  }

  playerPosition.y--;
  startGame();
}

function moveLeft() {
  if (playerPosition.x === 0) {
    return;
  }

  playerPosition.x--;
  startGame();
}

function moveRight() {
  if (playerPosition.x === 9) {
    return;
  }

  playerPosition.x++;
  startGame();
}

function moveDown() {
  if (playerPosition.y === 9) {
    return;
  }

  playerPosition.y++;
  startGame();
}

<function moveUp() {
  if (playerPosition.y < elementsSize) return console.log("Llegamos al limite");
  playerPosition.y -= elementsSize;
  console.log("Me quiero mover hacia arriba");
  startGame();
}

function moveLeft() {
  if (playerPosition.x == elementsSize)
    return console.log("Llegamos al limite");
  playerPosition.x -= elementsSize;
  console.log("Me quiero mover hacia izquierda");
  startGame();
}

function moveRight() {
  if (playerPosition.x > canvasSize) return console.log("Llegamos al limite");
  playerPosition.x += elementsSize;
  console.log("Me quiero mover hacia derecha");
  startGame();
}

function moveDown() {
  if (playerPosition.y == canvasSize) return console.log("Llegamos al limite");
  playerPosition.y += elementsSize;
  console.log("Me quiero mover hacia abajo");
  startGame();
}> 

if(emoji == 'O'){
                if(playerPosition.x > canvasSize){
                    playerPosition.x = canvasSize - 10
                    alert('NO TE SALGAS DEL MAPAAAAA!')
                }else if(playerPosition.y > canvasSize){
                    playerPosition.y = canvasSize - 10
                    alert('NO TE SALGAS DEL MAPAAAAA!')
                }else if( playerPosition.y <= 0){
                    playerPosition.y = playerPosition.y + elementsSize
                    alert('NO TE SALGAS DEL MAPAAAAA!')
                }else if(playerPosition.x <=0){
                    playerPosition.x = playerPosition.x + elementsSize
                    alert('NO TE SALGAS DEL MAPAAAAA!')
                }else{
                    if(!playerPosition.x && !playerPosition.y){
                        playerPosition.x = posX
                        playerPosition.y = posY
                    }
                } 

function startGame() {

    game.font = elementsSize + 'px Verdana';
    game.textAlign = 'end';

    const map = maps[0];
    const mapRows = map.trim().split('\n');
    const mapRowsCols = mapRows.map( row => row.trim().split(''));

    game.clearRect(0,0,canvasSize, canvasSize)

    mapRowsCols.forEach((row, rowI) => {
        row.forEach((col, colI) => {
            const emoji = emojis[col];
            const posX = elementsSize * (colI + 1);
            const posY =elementsSize * (rowI + 1);

            if (col == 'O') {
                if(!playerPosition.x && !playerPosition.y) {
                    playerPosition.x = posX;
                    playerPosition.y = posY;
                    console.log({playerPosition});
                }
              }
              
              game.fillText(emoji, posX, posY);
            });
        });
        
        if(playerPosition.x > canvasSize) playerPosition.x -= elementsSize; 
        if(playerPosition.x < (elementsSize)-1) playerPosition.x += elementsSize; 
        if(playerPosition.y > canvasSize) playerPosition.y -= elementsSize
        if(playerPosition.y < (elementsSize)-1)  playerPosition.y += elementsSize

    movePlayer();

}

function moveUp(){
    if(playerPosition.y > elementsSize) {
        playerPosition.y -= elementsSize;
        startGame();
    }
    
}
function moveLeft(){
    if(playerPosition.x > elementsSize){
        playerPosition.x -= elementsSize;
        startGame();
    }
}
function moveRight(){
    if(playerPosition.x < canvasSize){
        playerPosition.x += elementsSize;
        startGame();
    }
}
function moveDown(){
    if(playerPosition.y < canvasSize) {
        playerPosition.y += elementsSize;
        startGame();
    }
} 

function moveUp() {
  if(playerPosition.y > elementsSize ){
    playerPosition.y -= elementsSize
    startGame()
  }
}
function moveLeft() {
  if(!playerPosition.x == 0 ){
  playerPosition.x -= elementsSize
  startGame()}
}
function moveRight() {
  if(playerPosition.x < (canvasSize -elementsSize) ){
  playerPosition.x += elementsSize
  startGame()}
}
function moveDown() {
  if(playerPosition.y < (canvasSize -elementsSize) ){
  playerPosition.y += elementsSize
  startGame()}
}

function moveUp(){
  console.log('arriba')
  if(elemtSize<playerPos.y){
    playerPos.y -= elemtSize;
    startGame();
  }
}

function moveLeft(){
  console.log('izquierda')
  if(elemtSize<playerPos.x-elemtSize){
    playerPos.x -= elemtSize;
    startGame();
  }
}

function moveRight(){
  console.log('derecha')
  if(canvasSize>playerPos.x){
    playerPos.x += elemtSize;
    startGame();
  }
}

function moveDown(){
  console.log('abajo')
  if(canvasSize>playerPos.y+elemtSize){
    playerPos.y += elemtSize;
    startGame();
  }
}

No te salgas del mapa

Introducción

Programemos un juego con JavaScript

Canvas

¿Qué es canvas en JavaScript?

Tamaño del canvas y sus elementos

Canvas responsive

Mapa del juego

¿Qué es un array bidimensional?

Arreglos multidimensionales en JavaScript

Refactor del mapa de juego

Movimientos del jugador

Eventos y botones

Objeto playerPosition

Limpieza de movimientos

No te salgas del mapa

Colisiones

Detectando colisiones fijas

Detectando colisiones con arrays

Victoria: subiendo de nivel

Derrota: perdiendo vidas

Bonus: adictividad

Sistema de vidas y corazones

Sistema de tiempo y puntajes

¿Qué es localStorage?

Guardando records del jugador

Deploy

Depurando errores del juego

Desplegando el juego a GitHub Pages

Próximos pasos

Reto: reinicio del juego

Reto: timeouts de victoria o derrota

¿Quieres un simulador laboral?