init git

assets/FishSingle/script/game/manager/CannonManager.ts

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+import {
+	_decorator,
+	Component,
+	Node,
+	SpriteFrame,
+	Event,
+	EventMouse,
+	Sprite,
+	Vec2,
+	UITransform,
+	Vec3,
+} from 'cc'
+const { ccclass, property } = _decorator
+
+import MathUtils from '../../engine/utils/MathUtils'
+
+@ccclass('CannonManager')
+export default class CannonManager extends Component {
+	public static instance: CannonManager = null
+	@property({ type: Node })
+	private view: Node | null = null
+	@property({ type: [SpriteFrame] })
+	private cannonSpriteFrame: Array<SpriteFrame> = []
+	// 炮塔倍数
+	public cannonType: number = 1
+	private _vec3Cache
+
+	onLoad() {
+		this._vec3Cache = new Vec3()
+		CannonManager.instance = this
+		this.node.parent.on(Node.EventType.MOUSE_MOVE, this.onMeMove.bind(this))
+		this.refreshCannon()
+	}
+	private onMeMove(event: EventMouse) {
+		this.rotateCannon(event.getUILocation())
+	}
+
+	public rotateCannon(uilocation: Vec2) {
+		let location = uilocation
+		this._vec3Cache.x = location.x
+		this._vec3Cache.y = location.y
+		this._vec3Cache.z = 0
+		let tran = this.node.getComponent(UITransform)
+		tran.convertToNodeSpaceAR(this._vec3Cache, this._vec3Cache)
+
+		let localTouch: Vec2 = new Vec2(this._vec3Cache.x, this._vec3Cache.y)
+		this.view.getPosition(this._vec3Cache)
+		let rad: number = MathUtils.p2pRad(
+			new Vec2(this._vec3Cache.x, this._vec3Cache.y),
+			localTouch
+		)
+		let rot: number = MathUtils.radiansToDegrees(rad)
+		this.view.angle = rot - 90
+	}
+
+	public refreshCannon() {
+		this.view.getComponent(Sprite).spriteFrame =
+			this.cannonSpriteFrame[this.cannonType - 1]
+	}
+	public getCannonPosition() {
+		return this.view.getPosition()
+	}
+	onDestroy() {
+		CannonManager.instance = null
+	}
+}