Koordinaten sich schnell bewegender Objekte verifizieren 2
Bevor ich an die Umsetzung gehe, eine Frage an die Experten:
Ich habe mehrere Flugzeuge, die horizontal fliegen. Sie fliegen ziemlich schnell. Ich möchte sie mit der Maus anklicken und dann sollen sie verschwinden.
Kann ich prüfen, ob sie erfolgreich angeklickt wurden, indem ich die Mauskoordinaten mit den Flugzeugkoordinaten vergleiche?
Ich vermute, dass dies nicht funktionieren wird, weil die Flugzeug Koordinaten zum Zeitpunkt der Abfrage Mausklick schon veraltet sind.
Falls meine Vermutung zutrifft, wie könnte es funktionieren?
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Der hier verwendete Code
<style>
#alles{
width:100%;
height:100vh;
}
body{
counter-reset:birds;
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
overflow:hidden;
}
input{position:fixed; left:-10px; top:-10px;}
h1{margin:0; text-align:center;}
h2{position:fixed; right:20px; bottom:0; font-size:18px; color:red;}
.wrapper{
height:500px;
background: -webkit-linear-gradient(top, hsla(210,70%,80%,1) 0%,hsla(210,50%,100%,1) 100%);
position:relative;
cursor:crosshair;
}
.input-circle:checked{
counter-increment:birds;
}
.sum{position:fixed; left:45%; top:60px; font-size:24px; fonot-weight:bold;}
.sum:after{
content: counter(birds);
}
.input-circle ~ .pajaro{
opacity:0;
transition:0.3s cubic-bezier(0,.43,1,0);
animation: move 8s infinite alternate;
}
.input-circle1:not(:checked) ~ .pajaro1,
.input-circle2:not(:checked) ~ .pajaro2,
.input-circle3:not(:checked) ~ .pajaro3,
.input-circle4:not(:checked) ~ .pajaro4,
.input-circle5:not(:checked) ~ .pajaro5,
.input-circle6:not(:checked) ~ .pajaro6
{
opacity:1;
}
.input-circle1:checked ~ .pajaro1 span,
.input-circle2:checked ~ .pajaro2 span,
.input-circle3:checked ~ .pajaro3 span,
.input-circle4:checked ~ .pajaro4 span,
.input-circle5:checked ~ .pajaro5 span,
.input-circle6:checked ~ .pajaro6 span
{
display:block;
}
.pajaro{
position:absolute;
left:0;
cursor:crosshair;
}
.pajaro>span{
display:none;position:absolute; z-index:2; left:-250%;bottom:-50%;
background-color:white; border:solid 2px #000; width:80px; height:30px; padding:10px; border-radius:50%;
}
.pajaro>span:before{
content:"I'm Dead!"; color:red; font-weight:bold;
}
.pajaro1{top:50px;
animation-delay: -2s!important;
transform:scale(0.9);
}
.pajaro2{
top:100px;
animation-delay: -4s!important;
transform:scale(0.5);
}
.pajaro3{
top:200px;
animation-delay: -3s!important;
transform:scale(1.4);
}
.pajaro4{top:50px;
animation-delay: -12s!important;
transform:scale(0.9);
}
.pajaro5{
top:100px;
animation-delay: -16s!important;
transform:scale(0.5);
}
.pajaro6{
top:200px;
animation-delay: -20s!important;
transform:scale(1.4);
}
@keyframes move{
0%{left:0%;}
20%{left:20%;top:50%; }
40%{top:30%; left:60%;}
60%{top:80%;left:80%;}
80%{top:10%; left:20%:}
100%{top:30%; left:20%; }
}
.timer{
background-color:#333; width:300px;height:50px;
position:fixed;
}
.timer span{
display:block;
background:repeating-linear-gradient(-45deg, #000, rgba(0, 0, 0, 0) 25px, #FFF 25px, #FFF 50px);
width:300px; height:50px;
animation:timer 20s linear;
}
.timer span:before{
content:"TIME LEFT";
display:block;
position:absolute; z-index:3;
left:0;
right:0;
top:0;
bottom:0;
text-align:center;
line-height:50px;
font-size:25px;
color:red;
}
@keyframes timer{
0%{width:10px;}
100%{width:300px; display:block;}
}
.gameover{
position:fixed; z-index:100000; left:0; top:0; bottom:0; right:0; background-color:rgba(0,0,0,0.8);
animation:gameover 20s linear forwards;
font-size:80px; color:white; font-weight:bold; text-align:center;
text-indent:0;
line-height:500px;
}
@keyframes gameover{
0%{left:-5000px;bottom:100%;}
97%{left:-5000px;bottom:100%;}
100%{ left:0px;}
}
footer{position:fixed; left:0; bottom:0;}
.pajaro{
background:black;
border-radius: 50% 50% 20% 20%;
color:white;
line-height:20px;
letter-spacing: 2px;
font-size:0.8em;
text-align:center;
position:absolute;
margin-top:-20px; margin-left:-10px;
width:15px; height:15px;
animation:planeo 0.8s linear infinite;
z-index:999;
}
.pajaro:after,
.pajaro:before{
content:"";
position:absolute;
top:50%; left:50%;
}
.pajaro:after{
border-radius: 100% 100% 0 0;
box-shadow: inset 0px 5px 0 black;
width:100px; height:100px;
margin-top:-7px; margin-left:-50px;
transform-origin: 100% 0%;
animation:alas 3s linear infinite;
}
.pajaro:before{
background:#FFC37F;
border-radius: 100% 0% 20% 0%;
margin-top:3px; margin-left:-4px;
width:6px; height:6px;
transform:rotateZ(45deg);
}
@keyframes alas {
50%{
transform:rotateX(-1440deg);
}
}
@keyframes planeo {
40%{
transform:rotateZ(2deg) translateX(2px) translateY(10px) translateZ(0);
line-height:16px;
font-size:0.6em;
}
80%{
transform:rotateZ(-2deg) translateX(5px) translateY(8px) translateZ(0);
}
}
</style>
<div id="alles">
<div class="wrapper">
<div class="timer">
<span></span>
</div>
<div class="gameover">GAME OVER</div>
<h1>KILL THE BIRDS <span>(shoot the birds)</span></h1>
<h2>PURE CSS GAME - NO JS!</h2>
<input class="input-circle input-circle1" type="radio" id="circle1" >
<input class="input-circle input-circle2" type="radio" id="circle2" >
<input class="input-circle input-circle3" type="radio" id="circle3" >
<input class="input-circle input-circle4" type="radio" id="circle4" >
<input class="input-circle input-circle5" type="radio" id="circle5" >
<input class="input-circle input-circle6" type="radio" id="circle6" >
<label for="circle1" class="pajaro pajaro1"><span></span></label>
<label for="circle2" class="pajaro pajaro2"><span></span></label>
<label for="circle3" class="pajaro pajaro3"><span></span></label>
<label for="circle4" class="pajaro pajaro4"><span></span></label>
<label for="circle5" class="pajaro pajaro5"><span></span></label>
<label for="circle6" class="pajaro pajaro6"><span></span></label>
<div class="sum">SCORE:</div>
<footer></footer>
</div>
</div>