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script.js
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script.js
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gsap.registerPlugin(ScrollTrigger);
let speed = 100;
/* SCENE 1 */
let scene1 = gsap.timeline();
ScrollTrigger.create({
animation: scene1,
trigger: ".scrollElement",
start: "top top",
end: "45% 100%",
scrub: 3,
});
// hills animation
scene1.to("#h1-1", { y: 3 * speed, x: 1 * speed, scale: 0.9, ease: "power1.in" }, 0)
scene1.to("#h1-2", { y: 2.6 * speed, x: -0.6 * speed, ease: "power1.in" }, 0)
scene1.to("#h1-3", { y: 1.7 * speed, x: 1.2 * speed }, 0.03)
scene1.to("#h1-4", { y: 3 * speed, x: 1 * speed }, 0.03)
scene1.to("#h1-5", { y: 2 * speed, x: 1 * speed }, 0.03)
scene1.to("#h1-6", { y: 2.3 * speed, x: -2.5 * speed }, 0)
scene1.to("#h1-7", { y: 5 * speed, x: 1.6 * speed }, 0)
scene1.to("#h1-8", { y: 3.5 * speed, x: 0.2 * speed }, 0)
scene1.to("#h1-9", { y: 3.5 * speed, x: -0.2 * speed }, 0)
//animate text
scene1.to("#info", { y: 8 * speed }, 0)
/* Bird */
gsap.fromTo("#bird", { opacity: 1 }, {
y: -250,
x: 800,
ease: "power2.out",
scrollTrigger: {
trigger: ".scrollElement",
start: "15% top",
end: "60% 100%",
scrub: 4,
onEnter: function() { gsap.to("#bird", { scaleX: 1, rotation: 0 }) },
onLeave: function() { gsap.to("#bird", { scaleX: -1, rotation: -15 }) },
}
})
/* Clouds */
let clouds = gsap.timeline();
ScrollTrigger.create({
animation: clouds,
trigger: ".scrollElement",
start: "top top",
end: "70% 100%",
scrub: 1,
});
clouds.to("#cloud1", { x: 500 }, 0)
clouds.to("#cloud2", { x: 1000 }, 0)
clouds.to("#cloud3", { x: -1000 }, 0)
clouds.to("#cloud4", { x: -700, y: 25 }, 0)
/* Sun motion Animation */
let sun = gsap.timeline();
ScrollTrigger.create({
animation: sun,
trigger: ".scrollElement",
start: "top top",
end: "2200 100%",
scrub: 1,
});
//sun motion
sun.to("#bg_grad", { attr: { cy: "330" } }, 0.00)
//bg change
sun.to("#sun", { attr: { offset: "0.15" } }, 0.00)
sun.to("#bg_grad stop:nth-child(2)", { attr: { offset: "0.15" } }, 0.00)
sun.to("#bg_grad stop:nth-child(3)", { attr: { offset: "0.18" } }, 0.00)
sun.to("#bg_grad stop:nth-child(4)", { attr: { offset: "0.25" } }, 0.00)
sun.to("#bg_grad stop:nth-child(5)", { attr: { offset: "0.46" } }, 0.00)
sun.to("#bg_grad stop:nth-child(6)", { attr: { "stop-color": "#FF9171" } }, 0)
/* SCENE 2 */
let scene2 = gsap.timeline();
ScrollTrigger.create({
animation: scene2,
trigger: ".scrollElement",
start: "15% top",
end: "40% 100%",
scrub: 4,
});
scene2.fromTo("#h2-1", { y: 500, opacity: 0 }, { y: 0, opacity: 1 }, 0)
scene2.fromTo("#h2-2", { y: 500 }, { y: 0 }, 0.1)
scene2.fromTo("#h2-3", { y: 700 }, { y: 0 }, 0.1)
scene2.fromTo("#h2-4", { y: 700 }, { y: 0 }, 0.2)
scene2.fromTo("#h2-5", { y: 800 }, { y: 0 }, 0.3)
scene2.fromTo("#h2-6", { y: 900 }, { y: 0 }, 0.3)
/* Bats */
gsap.fromTo("#bats", { opacity: 1, y: 400, scale: 0 }, {
y: 120,
scale: 0.8,
transformOrigin: "50% 50%",
ease: "power3.out",
scrollTrigger: {
trigger: ".scrollElement",
start: "40% top",
end: "70% 100%",
scrub: 3,
onEnter: function() {
gsap.utils.toArray("#bats path").forEach((item, i) => {
gsap.to(item, { scaleX: 0.5, yoyo: true, repeat: 11, duration: 0.15, delay: 0.7 + (i / 10), transformOrigin: "50% 50%" })
});
gsap.set("#bats", { opacity: 1 })
},
onLeave: function() { gsap.to("#bats", { opacity: 0, delay: 2 }) },
}
})
/* Sun increase */
let sun2 = gsap.timeline();
ScrollTrigger.create({
animation: sun2,
trigger: ".scrollElement",
start: "2200 top",
end: "5000 100%",
scrub: 1,
});
sun2.to("#sun", { attr: { offset: "0.6" } }, 0)
sun2.to("#bg_grad stop:nth-child(2)", { attr: { offset: "0.7" } }, 0)
sun2.to("#sun", { attr: { "stop-color": "#ffff00" } }, 0)
sun2.to("#lg4 stop:nth-child(1)", { attr: { "stop-color": "#623951" } }, 0)
sun2.to("#lg4 stop:nth-child(2)", { attr: { "stop-color": "#261F36" } }, 0)
sun2.to("#bg_grad stop:nth-child(6)", { attr: { "stop-color": "#45224A" } }, 0)
/* Transition (from Scene2 to Scene3) */
gsap.set("#scene3", { y: 580, visibility: "visible" })
let sceneTransition = gsap.timeline();
ScrollTrigger.create({
animation: sceneTransition,
trigger: ".scrollElement",
start: "70% top",
end: "bottom 100%",
scrub: 3,
});
sceneTransition.to("#h2-1", { y: -680, scale: 1.5, transformOrigin: "50% 50%" }, 0)
sceneTransition.to("#bg_grad", { attr: { cy: "-80" } }, 0.00)
sceneTransition.to("#bg2", { y: 0 }, 0)
/* Scene 3 */
let scene3 = gsap.timeline();
ScrollTrigger.create({
animation: scene3,
trigger: ".scrollElement",
start: "80% 50%",
end: "bottom 100%",
scrub: 3,
});
//Hills motion
scene3.fromTo("#h3-1", { y: 300 }, { y: -550 }, 0)
scene3.fromTo("#h3-2", { y: 800 }, { y: -550 }, 0.03)
scene3.fromTo("#h3-3", { y: 600 }, { y: -550 }, 0.06)
scene3.fromTo("#h3-4", { y: 800 }, { y: -550 }, 0.09)
scene3.fromTo("#h3-5", { y: 1000 }, { y: -550 }, 0.12)
//stars
scene3.fromTo("#stars", { opacity: 0 }, { opacity: 0.5, y: -500 }, 0)
// Scroll Back text
scene3.fromTo("#arrow2", { opacity: 0 }, { opacity: 0.7, y: -710 }, 0.25)
scene3.fromTo("#text2", { opacity: 0 }, { opacity: 0.7, y: -710 }, 0.3)
//gradient value change
scene3.to("#bg2-grad", { attr: { cy: 600 } }, 0)
scene3.to("#bg2-grad", { attr: { r: 500 } }, 0)
/* falling star */
gsap.to("#fstar", {
x: -700,
y: -250,
ease: "power4.out",
scrollTrigger: {
trigger: ".scrollElement",
start: "4000 top",
end: "6000 100%",
scrub: 5,
onEnter: function() { gsap.set("#fstar", { opacity: 1 }) },
onLeave: function() { gsap.set("#fstar", { opacity: 0 }) },
}
})
//reset scrollbar position after refresh
window.onbeforeunload = function() {
window.scrollTo(0, 0);
}
let fullscreen;
let fsEnter = document.getElementById('fullscr');
fsEnter.addEventListener('click', function (e) {
e.preventDefault();
if (!fullscreen) {
fullscreen = true;
document.documentElement.requestFullscreen();
fsEnter.innerHTML = "Exit Fullscreen";
}
else {
fullscreen = false;
document.exitFullscreen();
fsEnter.innerHTML = "Go Fullscreen";
}
});