<!DOCTYPE html>
<html lang="es">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width">
<title>Sonrie</title>
<style>
.sprite {
position: fixed;
font-size: 3rem;
}
</style>
</head>
<body>
<h1>Sonrie</h1>
<output id="abrazo"
class="sprite"
style="background-color:
greenyellow;">
🤗
</output>
<output id="triste"
class="sprite"
style="background-color:
grey;">
😪
</output>
<script>
let x = 0
const REFRESCO = 5
let intervalo =
setInterval(avanza, REFRESCO)
function avanza() {
const velocidad =
innerWidth / 2000
const x2 = innerWidth
const y = innerHeight / 2
triste.style.left =
`${innerWidth / 2}px`
triste.style.bottom = `${y}px`
abrazo.style.left = `${x}px`
abrazo.style.bottom = `${y}px`
if (seTocan(abrazo, triste)) {
triste.value = "😊";
triste.style.
backgroundColor
= "pink";
clearInterval(intervalo);
} else {
x = (x + velocidad) % x2
}
}
/**
* Devuelve true si 2
* elementos se tocan.
* @param {HTMLElement} e1
* @param {HTMLElement} e2
* @returns {boolean} true
* si los elementos se
* tocan.
*/
function seTocan(e1, e2) {
const rE1 =
e1.getBoundingClientRect()
const rE2 =
e2.getBoundingClientRect()
return (rE1.right >= rE2.left
&& rE1.left <= rE2.right
&& rE1.top <= rE2.bottom
&& rE1.bottom >= rE2.top)
}
</script>
</body>
</html>