所以- 我正在尝试创建一个游戏,您可以在其中跨网格移动角色。我有一个主网格容器div,然后在该容器内形成网格的单独div加载(使用网格布局CSS)。
<div id="grid-container">
<div id='player'></div>
<div id='a'>
<h3>Start</h3>
</div>
<div id='b'></div>
<div id='c'></div>
<div id='d'></div>
<div id='e'></div>
<div id='f'></div>
<div id='g'></div>
<div id='h'></div>
<div id='i'></div>
<div id='j'></div>
<div id='k'></div>
<div id='l'></div>
<div id='m'></div>
<div id='n'></div>
<div id='o'>
<h3>Finish</h3>
</div>
</div>
然后我将角色的div放置在网格上。我原本是使用定位来移动角色-
document.addEventListener('keyup', event => {
switch (event.keyCode){
case 37:
if (leftDistance > 0) {
player.style.left = --leftDistance + '%';
}
break;
case 38:
if (topDistance > 0) {
player.style.top = --topDistance + '%';
}
break;
然后我想创建一个逻辑来说,“当角色处于这样的位置时,以此警告用户并将角色放回起始位置”。有人告诉我,这与编号定位很复杂,而且通过使用网格,当用户按下箭头键时,我能够将字符从一个div移到另一个div。我似乎无法找出解决此问题的最佳方法。我试图用数字命名div,以便当角色移动时,我基本上可以在其位置ID中添加一个数字,以便它们最终出现在下一个div中,但是我似乎无法用数字命名我的div? 也许我使事情复杂化了,但是任何见解都会有所帮助!
答案 0 :(得分:1)
首先,我建议您进行彻底检查。命名所有这些ID的游戏不具有可扩展性或实用性。它违反了DRY原理(查找它)。
与其让一个拥有id
的玩家的div代替,不如让.grid-square
的div担任.contains-player
的类。这样,您就不会在播放器每次移动时都在拖曳布局。
您希望有一个所有div的数组,然后使用类似的逻辑来确定在朝某个方向移动时应该发生什么。这就是我要做的,请适应您的口味和需求。
window.onload = function() {
const gameHeight = 10;
const gameWidth = 10;
const container = document.getElementById("grid-container");
for(let i = 0; i < gameWidth * gameHeight; i++) {
container.innerHTML += `<div class="grid-square"></div>`;
}
const gridSquares = document.querySelectorAll(".grid-square");
gridSquares[0].classList.add("contains-player");
let playerX = 0,
playerY = 0;
function move(direction) {
const playerDiv = document.querySelector(".grid-square.contains-player");
playerDiv.classList.remove("contains-player");
let newPlayerDiv;
switch(direction) {
case "left": playerX--; break;
case "up": playerY--; break;
case "right": playerX++; break;
case "down": playerY++; break;
// ...
}
newPlayerDiv = gridSquares[(playerY * gameWidth) + playerX]
newPlayerDiv = gridSquares[(playerY * gameWidth) + playerX];
// Add some logic in here to make sure player isn't offscreen;
newPlayerDiv.classList.add("contains-player");
}
function toBeExecutedOnKeyDown(event) {
let direction;
switch(event.which) {
case 37: direction = "left"; break;
case 38: direction = "up"; break;
case 39: direction = "right"; break;
case 40: direction = "down"; break;
}
if(direction) {
event.preventDefault(); // Prevent screen from moving around
// More readable
move(direction);
}
}
window.onkeydown = toBeExecutedOnKeyDown;
}
:root {
--game-size: 10;
--game-scale: 10px;
--game-actual-size: calc(var(--game-size) * var(--game-scale));
}
#grid-container {
width: var(--game-actual-size);
height: var(--game-actual-size);
clear: both;
}
#grid-container .grid-square {
width: var(--game-scale);
height: var(--game-scale);
float: left;
background-color: grey;
}
.grid-square.contains-player {
background-color: red !important;
}
<!DOCTYPE html>
<html>
<head>
<title>Game</title>
<script src="./script.js"></script>
<link rel="stylesheet" href="./style.css"/>
</head>
<body>
<div id="grid-container">
<!--
This will be filled with divs like the following when the JS loads
<div class="grid-square"></div>
The div containing the player will look like this
<div class="grid-square contains-player"></div>
-->
</div>
</body>
</html>