136 lines
4.2 KiB
TypeScript
136 lines
4.2 KiB
TypeScript
/*
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* @Author: dgflash
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* @Date: 2021-08-11 16:41:12
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* @LastEditors: dgflash
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* @LastEditTime: 2023-01-19 15:27:24
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*/
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import { Node, Vec3 } from "cc";
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import { Timer } from "../../../../../../extensions/oops-plugin-framework/assets/core/common/timer/Timer";
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import { Vec3Util } from "../../../../../../extensions/oops-plugin-framework/assets/core/utils/Vec3Util";
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import { ecs } from "../../../../../../extensions/oops-plugin-framework/assets/libs/ecs/ECS";
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/** 向目标移动，移动过程中目标位置变化会自动修正移动目标点，直到未修正前移动到目标点停止 */
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@ecs.register('MoveTo')
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export class MoveToComp extends ecs.Comp {
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/** 移动节点 */
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node: Node = null!;
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/** 移动方向 */
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velocity: Vec3 = Vec3Util.zero;
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/** 移动速度（每秒移动的像素距离） */
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speed: number = 0;
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/** 目标实体ECS编号、目标位置 */
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target: Vec3 | Node | null = null;
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/** 坐标标（默认本地坐标） */
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ns: number = Node.NodeSpace.LOCAL;
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/** 偏移距离 */
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offset: number = 0;
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/** 偏移向量 */
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offsetVector: Vec3 | null = null;
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/** 移动完成回调 */
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onComplete: Function | null = null;
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/** 距离变化时 */
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onChange: Function | null = null;
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reset() {
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this.ns = Node.NodeSpace.LOCAL;
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this.offset = 0;
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this.target = null;
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this.offsetVector = null;
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this.onComplete = null;
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this.onChange = null;
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}
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}
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@ecs.register('VariableMoveTo')
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class VariableMoveToComponent extends ecs.Comp {
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/** 延时触发器 */
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timer: Timer = new Timer();
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/** 终点备份 */
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end: Vec3 | null = null;
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/** 目标位置 */
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target!: Vec3;
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reset() {
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this.end = null;
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this.timer.reset();
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}
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}
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/** 跟踪移动到目标位置 */
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export class MoveToSystem extends ecs.ComblockSystem<ecs.Entity> implements ecs.IEntityEnterSystem, ecs.IEntityRemoveSystem, ecs.ISystemUpdate {
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filter(): ecs.IMatcher {
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return ecs.allOf(MoveToComp);
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}
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entityEnter(e: ecs.Entity): void {
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e.add(VariableMoveToComponent);
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}
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entityRemove(e: ecs.Entity): void {
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e.remove(VariableMoveToComponent);
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}
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update(e: ecs.Entity) {
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let move = e.get(MoveToComp);
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let mtv = e.get(VariableMoveToComponent);
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let end: Vec3;
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console.assert(move.speed > 0, "移动速度必须要大于零");
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if (move.target instanceof Node) {
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end = move.ns == Node.NodeSpace.WORLD ? move.target.worldPosition : move.target.position;
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}
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else {
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end = move.target as Vec3;
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}
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// 目标移动后，重计算移动方向与移动到目标点的速度
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if (mtv.end == null || !mtv.end.strictEquals(end)) {
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let target = end.clone();
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if (move.offsetVector) {
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target = target.add(move.offsetVector); // 这里的问题
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}
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// 移动方向与移动数度
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let start = move.ns == Node.NodeSpace.WORLD ? move.node.worldPosition : move.node.position;
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move.velocity = Vec3Util.sub(target, start).normalize();
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// 移动时间与目标偏位置计算
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let distance = Vec3.distance(start, target) - move.offset;
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move.onChange?.call(this);
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if (distance - move.offset <= 0) {
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this.exit(e);
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}
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else {
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mtv.timer.step = distance / move.speed;
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mtv.end = end.clone();
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mtv.target = move.velocity.clone().multiplyScalar(distance).add(start);
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}
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}
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if (move.speed > 0) {
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let trans = Vec3Util.mul(move.velocity, move.speed * this.dt);
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move.node.translate(trans, Node.NodeSpace.LOCAL);
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}
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// 移动完成事件
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if (mtv.timer.update(this.dt)) {
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if (move.ns == Node.NodeSpace.WORLD)
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move.node.worldPosition = mtv.target;
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else
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move.node.position = mtv.target;
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this.exit(e);
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}
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}
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private exit(e: ecs.Entity) {
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let move = e.get(MoveToComp);
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move.onComplete?.call(this);
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e.remove(VariableMoveToComponent);
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e.remove(MoveToComp);
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}
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} |