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javascript - 如何使用 z-index 模拟芯片通过连接四板掉落以赋予其 3d 效果?

转载 作者:行者123 更新时间:2023-11-28 14:14:02 24 4
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我正在制作连连四游戏,现在我可以将筹码放入适当的插槽中,也可以将红色筹码更改为黄色筹码。但是,当您放下芯片时,它不会进入电路板。它在板外分层。我希望掉落的筹码落在每个插槽内的深蓝色圆圈上并落在插槽本身下方。所以它看起来很逼真和 3d。

我以为我可以用 z-index 做到这一点,但我有两个问题。 1st 当我将 div 插槽设置为 3 的 z-index 时,即使下落筹码的 z-index 为 2;芯片仍然落在插槽上?第二,即使这样做确实有效,每个插槽中的深蓝色圆圈现在也会被隐藏,因为 div 具有更高的 z-index,它们需要相同才能使它们可见。但是,如果它们相同,芯片就不能落在板内吗?

关于如何实现这种效果有什么想法吗?

//grab all slot positions on the board
const slots = document.querySelectorAll('.board div');
let player = 'p1';
let board = [
0, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10, 11, 12, 13,
14, 15, 16, 17, 18, 19, 20,
21, 22, 23, 24, 25, 26, 27,
28, 29, 30, 31, 32, 33, 34,
35, 36, 37, 38, 39, 40, 41,
]

//assign a class to each slot to represent its position
for(let i = 0; i < slots.length; i++) {
//add class to each div
slots[i].classList.add('c' + i);
//add the slot to each div
let slot = document.createElement('span');
slots[i].appendChild(slot);
//add the function with the game logic to each slot
slots[i].addEventListener('click', runGame);
}

function runGame() {
//figure out which column the selected slot sits in
const slotColumn = (Number(this.className.slice(1, 3)) % 7);
//create an array to store all the slots that share the above column
const columnArray = [];

//grab all the slots that sit in that column
for(let i = 0; i < board.length; i++) {
if(board[i] % 7 === slotColumn) columnArray.push(board[i]);
}

//drop chip in the chosen column
dropChip(columnArray);

function dropChip(column) {
//select bottom most slot that's available in the column
for(let i = column.length - 1; i >= 0; i--) {
if(column[i] !== 'p1' || column[i] !== 'p2') {
board[column[i]] = player;
slots[column[i]].classList.add(player);
switchPlayer(player);
break;
}
}

function switchPlayer(currentPlayer) {
if(currentPlayer === 'p1') player = 'p2';
else if(currentPlayer ==='p2') player = 'p1';
}
}
}
/** {
outline: 1px solid red;
}*/

*, *:before, *:after {
box-sizing: inherit;
}

html {
box-sizing: border-box;
}

html, body {
margin: 0;
padding: 0;
background-color: #e5e6e8;
}

body {
display: flex;
justify-content: center;
min-height: 100vh;
}

.board-wrapper {
padding-top: 100px;
display: flex;
justify-content: center;
margin: auto auto 0 auto; /*ask why this is needed*/
position: relative;
overflow: hidden;
}

.board {
display: flex;
flex-wrap: wrap;
max-width: 706px;
background-color: #00c;
padding: 3px;
}

.board div {
width: 100px;
height: 100px;
background-color: blue;
border: 3px solid #00c;
position: relative;
z-index: 3;
}

.board div span {
display: inline-block;
width: 80px;
height: 80px;
border-radius: 50%;
background-color: #00c;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
box-shadow: inset 0px 0px 13px #0606aa;
}

.board .chip {
display: block;
position: absolute;
background-color: transparent;
top: 0;
left: 0;
right: 0;
height: 100px;
}

.board .chip:after {
content: "";
width: 80px;
height: 80px;
border-radius: 50%;
background-color: red;
position: absolute;
left: 3px;
top: 0;
opacity: 0;
transition: all .5s ease;
}

.board .chip:before {
content: "";
width: 50px;
height: 50px;
border-radius: 50%;
background-color: red;
position: absolute;
left: 18px;
top: 15px;
z-index: 1;
box-shadow: inset 0px 0px 20px #cc0000;
opacity: 0;
transition: all .5s ease;
}

.board div:nth-of-type(7n+1):hover ~ .chip:after{transform: translateX(10px); opacity: 1;}
.board div:nth-of-type(7n+1):hover ~ .chip:before{transform: translateX(10px); opacity: 1;}
.board div:nth-of-type(7n+2):hover ~ .chip:after{transform: translateX(110px); opacity: 1;}
.board div:nth-of-type(7n+2):hover ~ .chip:before{transform: translateX(110px); opacity: 1;}
.board div:nth-of-type(7n+3):hover ~ .chip:after{transform: translateX(210px); opacity: 1;}
.board div:nth-of-type(7n+3):hover ~ .chip:before{transform: translateX(210px); opacity: 1;}
.board div:nth-of-type(7n+4):hover ~ .chip:after{transform: translateX(310px); opacity: 1;}
.board div:nth-of-type(7n+4):hover ~ .chip:before{transform: translateX(310px); opacity: 1;}
.board div:nth-of-type(7n+5):hover ~ .chip:after{transform: translateX(410px); opacity: 1;}
.board div:nth-of-type(7n+5):hover ~ .chip:before{transform: translateX(410px); opacity: 1;}
.board div:nth-of-type(7n+6):hover ~ .chip:after{transform: translateX(510px); opacity: 1;}
.board div:nth-of-type(7n+6):hover ~ .chip:before{transform: translateX(510px); opacity: 1;}
.board div:nth-of-type(7n+7):hover ~ .chip:after{transform: translateX(610px); opacity: 1;}
.board div:nth-of-type(7n+7):hover ~ .chip:before{transform: translateX(610px); opacity: 1;}

.p1:after {
content: "";
display: inline-block;
width: 80px;
height: 80px;
border-radius: 50%;
background-color: red;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
z-index: 1;
animation-name: drop;
animation-fill-mode: forwards;
animation-duration: .5s;
animation-timing-function: ease-in;
}

.p1:before {
content: "";
width: 50px;
height: 50px;
border-radius: 50%;
background-color: red;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
z-index: 2;
box-shadow: inset 0px 0px 20px #cc0000;
animation-name: drop;
animation-fill-mode: forwards;
animation-duration: .5s;
animation-timing-function: ease-in;
}

.p2:after {
content: "";
display: inline-block;
width: 80px;
height: 80px;
border-radius: 50%;
background-color: yellow;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
z-index: 1;
animation-name: drop;
animation-fill-mode: forwards;
animation-duration: .5s;
animation-timing-function: ease-in;
}

.p2:before {
content: "";
width: 50px;
height: 50px;
border-radius: 50%;
background-color: yellow;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
z-index: 2;
box-shadow: inset 0px 0px 20px #ced639;
animation-name: drop;
animation-fill-mode: forwards;
animation-duration: .5s;
animation-timing-function: ease-in;
}

@keyframes drop {
from {top: -1500px;}
to {top: 0;}
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Connect Four</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="board-wrapper">
<div class="board">
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<span class="chip"></span>
</div>
</div>
<script src="script.js"></script>
</body>
</html>

最佳答案

这是您的代码的修改版本。首先,我将 chip 元素更改为仅考虑一个伪元素而不是 2 个,并且我使用了 CSS 变量以便轻松更改颜色。

然后对于板,我使用两个元素创建了每个单元格,以便能够具有 3D 效果。你会看到伪元素,我在其中应用了径向渐变以创建一个孔,并且该层将位于顶部,芯片将落在后面:

//grab all slot positions on the board
const slots = document.querySelectorAll('.board div');
let player = 'p1';
let board = [
0, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10, 11, 12, 13,
14, 15, 16, 17, 18, 19, 20,
21, 22, 23, 24, 25, 26, 27,
28, 29, 30, 31, 32, 33, 34,
35, 36, 37, 38, 39, 40, 41,
]

//assign a class to each slot to represent its position
for (let i = 0; i < slots.length; i++) {
//add class to each div
slots[i].classList.add('c' + i);
//add the slot to each div
let slot = document.createElement('span');
slots[i].appendChild(slot);
//add the function with the game logic to each slot
slots[i].addEventListener('click', runGame);
}

function runGame() {
//figure out which column the selected slot sits in
const slotColumn = (Number(this.className.slice(1, 3)) % 7);
//create an array to store all the slots that share the above column
const columnArray = [];

//grab all the slots that sit in that column
for (let i = 0; i < board.length; i++) {
if (board[i] % 7 === slotColumn) columnArray.push(board[i]);
}

//drop chip in the chosen column
dropChip(columnArray);

function dropChip(column) {
//select bottom most slot that's available in the column
for (let i = column.length - 1; i >= 0; i--) {
if (column[i] !== 'p1' || column[i] !== 'p2') {
board[column[i]] = player;
slots[column[i]].classList.add(player);
switchPlayer(player);
break;
}
}

function switchPlayer(currentPlayer) {
if (currentPlayer === 'p1') player = 'p2';
else if (currentPlayer === 'p2') player = 'p1';
}
}
}
/** {
outline: 1px solid red;
}*/

*,
*:before,
*:after {
box-sizing: inherit;
}

html {
box-sizing: border-box;
}

html,
body {
margin: 0;
padding: 0;
background-color: #e5e6e8;
}

body {
display: flex;
justify-content: center;
min-height: 100vh;
}

.board-wrapper {
padding-top: 100px;
display: flex;
justify-content: center;
margin: auto auto 0 auto; /*ask why this is needed*/
position: relative;
overflow: hidden;
}

.board {
display: flex;
flex-wrap: wrap;
max-width: 706px;
background-color: #00c;
padding: 3px;
}

.board div {
width: 100px;
height: 100px;
position: relative;
}

.board div span {
width: 80px;
height: 80px;
border-radius: 50%;
background-color: #00c;
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
box-shadow: inset 0px 0px 13px #0606aa;
}

.board div span:before {
content: "";
position: absolute;
top: -10px;
left: -10px;
right: -10px;
bottom: -10px;
background: radial-gradient(circle, transparent 40px, blue 0);
border: 3px solid #00c;
z-index: 3;
}

.board .chip {
display: block;
position: absolute;
background-color: transparent;
top: 0;
left: 0;
right: 0;
height: 100px;
}

.board .chip:after {
content: "";
width: 80px;
height: 80px;
border-radius: 50%;
border: 15px solid red;
background-color: red;
box-shadow: inset 0px 0px 20px #cc0000;
position: absolute;
left: 3px;
top: 0;
opacity: 0;
transition: all .5s ease;
}

.board div:nth-of-type(7n+1):hover~.chip:after {
transform: translateX(10px);
opacity: 1;
}

.board div:nth-of-type(7n+1):hover~.chip:before {
transform: translateX(10px);
opacity: 1;
}

.board div:nth-of-type(7n+2):hover~.chip:after {
transform: translateX(110px);
opacity: 1;
}

.board div:nth-of-type(7n+2):hover~.chip:before {
transform: translateX(110px);
opacity: 1;
}

.board div:nth-of-type(7n+3):hover~.chip:after {
transform: translateX(210px);
opacity: 1;
}

.board div:nth-of-type(7n+3):hover~.chip:before {
transform: translateX(210px);
opacity: 1;
}

.board div:nth-of-type(7n+4):hover~.chip:after {
transform: translateX(310px);
opacity: 1;
}

.board div:nth-of-type(7n+4):hover~.chip:before {
transform: translateX(310px);
opacity: 1;
}

.board div:nth-of-type(7n+5):hover~.chip:after {
transform: translateX(410px);
opacity: 1;
}

.board div:nth-of-type(7n+5):hover~.chip:before {
transform: translateX(410px);
opacity: 1;
}

.board div:nth-of-type(7n+6):hover~.chip:after {
transform: translateX(510px);
opacity: 1;
}

.board div:nth-of-type(7n+6):hover~.chip:before {
transform: translateX(510px);
opacity: 1;
}

.board div:nth-of-type(7n+7):hover~.chip:after {
transform: translateX(610px);
opacity: 1;
}

.board div:nth-of-type(7n+7):hover~.chip:before {
transform: translateX(610px);
opacity: 1;
}

.p1:after,
.p2:after {
content: "";
display: inline-block;
width: 80px;
height: 80px;
border-radius: 50%;
border: 15px solid var(--c, red);
background-color: var(--c, red);
box-shadow: inset 0px 0px 20px var(--s, #cc0000);
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
margin: auto;
z-index: 1;
animation-name: drop;
animation-fill-mode: forwards;
animation-duration: .5s;
animation-timing-function: ease-in;
}

.p2 {
--c: yellow;
--s: #ced639;
}

@keyframes drop {
from {
top: -1500px;
}
to {
top: 0;
}
}
<div class="board-wrapper">
<div class="board">
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<span class="chip"></span>
</div>
</div>

关于javascript - 如何使用 z-index 模拟芯片通过连接四板掉落以赋予其 3d 效果?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/56083365/

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