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export function getPosByAngle(angle, len) {
const radian = angle * Math.PI / 180;
const x = Math.sin(radian) * len;
const y = Math.cos(radian) * len;
return { x, y };
}
export function getAngleByPos(px, py, mx, my) {
const x = Math.abs(px - mx);
const y = Math.abs(py - my);
const z = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
const cos = y / z;
const radina = Math.acos(cos); // 用反三角函数求弧度
let angle = Math.floor(180 / (Math.PI / radina) * 100) / 100; // 将弧度转换成角度
if (mx > px && my > py) {// 鼠标在第四象限
angle = 180 - angle;
}
if (mx === px && my > py) {// 鼠标在y轴负方向上
angle = 180;
}
if (mx > px && my === py) {// 鼠标在x轴正方向上
angle = 90;
}
if (mx < px && my > py) {// 鼠标在第三象限
angle = 180 + angle;
}
if (mx < px && my === py) {// 鼠标在x轴负方向
angle = 270;
}
if (mx < px && my < py) {// 鼠标在第二象限
angle = 360 - angle;
}
// console.log('angle: ', angle);
return angle;
}
export function exchangeNodePos(baseNode, targetNode) {
return baseNode.convertToNodeSpaceAR(targetNode._parent.convertToWorldSpaceAR(cc.v2(targetNode.x, targetNode.y)));
}
export function RandomInt(a, b = 0) {
let max = Math.max(a, b);
let min = Math.min(a, b);
return Math.floor(Math.random() * (max - min) + min);
}
export function Between(a, b, c) {
return [a, b, c].sort((a, b) => a - b)[1];
}
export function randomSortByArr(arr) {
const newArr = [];
const tmpArr = arr.concat();
while (tmpArr.length > 0) {
const randomIndex = Math.floor(tmpArr.length * Math.random());
newArr.push(tmpArr[randomIndex]);
tmpArr.splice(randomIndex, 1);
}
return newArr;
}
export async function asyncTweenTo(node, duration, obj, ease = undefined) {
return new Promise((resolve, reject) => {
cc.tween(node)
.to(duration, obj, ease)
.call(() => {
resolve();
})
.start();
});
}
export async function asyncTweenBy(node, duration, obj, ease = undefined) {
return new Promise((resolve, reject) => {
cc.tween(node)
.by(duration, obj, ease)
.call(() => {
resolve();
})
.start();
});
}
export async function asyncPlayDragonBoneAnimation(node, animationName, time = 1, onFrameEvent) {
return new Promise((resolve, reject) => {
node.getComponent(dragonBones.ArmatureDisplay)
.once(dragonBones.EventObject.COMPLETE, () => {
resolve();
});
node.getComponent(dragonBones.ArmatureDisplay)
.on(dragonBones.EventObject.FRAME_EVENT, ({ name }) => {
if (onFrameEvent && typeof (onFrameEvent) == 'function') {
onFrameEvent(name);
}
});
node.getComponent(dragonBones.ArmatureDisplay)
.playAnimation(animationName, time);
});
}
export async function asyncPlayEffectByUrl(url, loop = false) {
return new Promise((resolve, reject) => {
cc.assetManager.loadRemote(url, (err, clip) => {
console.log(clip);
cc.audioEngine.playEffect(clip, loop);
resolve();
});
});
}
export async function jelly(node) {
return new Promise((resolve, reject) => {
cc.tween(node)
.to(0.1, { scaleX: 0.9, scaleY: 1.1 })
.to(0.1, { scaleX: 1.1, scaleY: 0.9 })
.to(0.1, { scaleX: 1, scaleY: 1 })
.call(resolve)
.start();
});
}
export async function asyncDelay(time) {
return new Promise((resolve, reject) => {
setTimeout(() => {
resolve();
}, time * 1000);
})
}
export async function showFireworks(baseNode, nodeList, pos = cc.v2(0, 0), side = cc.v2(0, 100), range = 50, number = 100) {
new Array(number).fill(' ').forEach(async (_, i) => {
let rabbonNode = new cc.Node();
rabbonNode.parent = baseNode;
rabbonNode.x = pos.x;
rabbonNode.y = pos.y;
rabbonNode.angle = 60 * Math.random() - 30;
let node = cc.instantiate(nodeList[RandomInt(nodeList.length)]);
node.parent = rabbonNode;
node.active = true;
node.x = 0;
node.y = 0;
node.angle = 0;
const rate = Math.random();
const angle = Math.PI * (Math.random() * 2 - 1);
await asyncTweenBy(rabbonNode, 0.3, {
x: side.x * rate + Math.cos(angle) * range * rate,
y: side.y * rate + Math.sin(angle) * range * rate
}, {
easing: 'quadIn'
});
cc.tween(rabbonNode)
.by(8, { y: -2000 })
.start();
rabbonFall(rabbonNode);
await asyncDelay(Math.random());
cc.tween(node)
.by(0.15, { x: -10, angle: -10 })
.by(0.3, { x: 20, angle: 20 })
.by(0.15, { x: -10, angle: -10 })
.union()
.repeatForever()
.start();
cc.tween(rabbonNode)
.delay(5)
.to(0.3, { opacity: 0 })
.call(() => {
node.stopAllActions();
node.active = false;
node.parent = null;
node = null;
})
.start();
});
}
async function rabbonFall(node) {
const time = 1 + Math.random();
const offsetX = RandomInt(-200, 200) * time;
await asyncTweenBy(node, time, { x: offsetX, angle: offsetX * 60 / 200 });
rabbonFall(node);
}