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import { _decorator, Collider2D, Component, Mat4, Node, Vec3, isValid } from 'cc';
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import { tetriNode } from './tetriNode';
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import { ROLE_HAND_LAYER } from './roleHand';
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const { ccclass, property } = _decorator;
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/**
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* 战斗中方块落稳后：角色挂到 ui_roleLayer，在 lateUpdate 跟随方块根节点（followTarget）的世界位置与旋转
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* （物理步之后采样，避免 update 落后一帧导致角色与方块脱节）。
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* 角色为动态创建时请调用 {@link setFollowTarget}；也可依赖 onLoad 时父链上的 tetriNode 自动推断。
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* 方块 `destroy` 后 followTarget 会 `!isValid`，此时销毁本节点。
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*
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* 渲染层：预制体若设为 battleScene 而父节点在 card（UI_2D）或 ui_roleLayer（UI_2D），与相机 visibility 不一致会偶现看不见；
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* 落稳前与本节点父级对齐 layer，挂到 ui_roleLayer 后与该层对齐（含子节点递归）。
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* 分组：挂到 ui_roleLayer 时同步 Node.group 与 Collider2D.group（与参考层一致），避免渲染/物理分组不一致。
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*/
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@ccclass('role')
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export class role extends Component {
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@property({
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type: Node,
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tooltip: '可选：编辑器里指定；运行时优先用 setFollowTarget()',
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})
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followTarget: Node | null = null;
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private _carrierTetri: tetriNode | null = null;
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private _movedToRoleLayer = false;
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/** 落稳挂层时，角色世界位置在 followTarget 空间下的局部点（用于每帧跟旋转） */
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private readonly _offsetInTargetSpace = new Vec3();
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private readonly _tmpWorldPos = new Vec3();
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private readonly _matInv = new Mat4();
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/** followTarget 世界坐标合理范围（玩法区约 ±2500，超出视为方块已滑出/掉落失控） */
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private static readonly _MAX_FOLLOW_WORLD_X = 2500;
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private static readonly _MAX_FOLLOW_WORLD_Y = 50000;
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private _isFollowTargetWorldSane(target: Node): boolean {
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const wp = target.worldPosition;
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return (
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Math.abs(wp.x) <= role._MAX_FOLLOW_WORLD_X
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&& Math.abs(wp.y) <= role._MAX_FOLLOW_WORLD_Y
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&& wp.y >= -1200
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&& Number.isFinite(wp.x)
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&& Number.isFinite(wp.y)
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);
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}
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/**
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* 动态设置跟随目标（一般为带刚体的方块根节点 / tetriNode 所在节点）。
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* 动态创建角色后务必调用一次；会刷新内部 tetriNode 引用。
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*/
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public setFollowTarget(node: Node | null): void {
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this.followTarget = node?.isValid ? node : null;
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this._refreshCarrierTetri();
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}
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private _refreshCarrierTetri(): void {
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const t = this.followTarget;
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this._carrierTetri =
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t?.getComponent(tetriNode) ?? t?.getComponentInChildren(tetriNode) ?? null;
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}
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/** 与子节点统一 layer，避免 UI 相机不画 battleScene 等；hand 为 Sprite 保持 UI_2D */
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private _applyLayerRecursive(n: Node, layer: number): void {
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if (n.name === 'hand') {
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n.layer = ROLE_HAND_LAYER;
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return;
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}
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n.layer = layer;
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const ch = n.children;
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for (let i = 0; i < ch.length; i++) {
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const c = ch[i];
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if (c?.isValid) this._applyLayerRecursive(c, layer);
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}
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}
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/** 从参考节点取 group（编辑器分组 / 部分版本 Node 上仍有 group 字段） */
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private _getRefNodeGroup(ref: Node): unknown {
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return (ref as any).group;
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}
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/** 参考层上用于碰撞的 group（取 ref 子树里第一个 Collider2D；空层则无） */
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private _getRefColliderGroup(ref: Node): number | undefined {
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const cols = ref.getComponentsInChildren(Collider2D) ?? [];
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for (let i = 0; i < cols.length; i++) {
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const col = cols[i];
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if (!col?.isValid) continue;
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const g = (col as any).group;
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if (typeof g === 'number') return g;
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}
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return undefined;
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}
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/** 角色子树与 ui_roleLayer 对齐 Node.group + Collider2D.group */
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private _applyGroupRecursiveFromRef(root: Node, ref: Node): void {
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const ng = this._getRefNodeGroup(ref);
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const cg = this._getRefColliderGroup(ref);
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const hasNg = ng !== undefined && ng !== null && (typeof ng === 'number' || typeof ng === 'string');
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const walk = (n: Node): void => {
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if (!n?.isValid) return;
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if (hasNg) (n as any).group = ng;
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if (cg !== undefined) {
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const cols = n.getComponents(Collider2D) ?? [];
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for (let i = 0; i < cols.length; i++) {
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const c = cols[i];
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if (c?.isValid) (c as any).group = cg;
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}
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}
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const ch = n.children;
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for (let i = 0; i < ch.length; i++) walk(ch[i]);
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};
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walk(root);
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}
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/** 仍在方块子树时：与直接父节点 layer 一致（card→战场 reparent 后也会自动跟上） */
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private _syncLayerToParent(): void {
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if (this._movedToRoleLayer) return;
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const p = this.node.parent;
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if (!p?.isValid) return;
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if (this.node.layer === p.layer) return;
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this._applyLayerRecursive(this.node, p.layer);
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}
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onLoad(): void {
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if (!this.followTarget?.isValid) {
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let cur: Node | null = this.node.parent;
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while (cur) {
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const tn = cur.getComponent(tetriNode);
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if (tn) {
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this.followTarget = cur;
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this._carrierTetri = tn;
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break;
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}
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cur = cur.parent;
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}
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} else {
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this._refreshCarrierTetri();
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}
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}
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/**
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* 方块销毁时同步清理 ui_roleLayer 上仍跟随该方块（或其子树）的角色。
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* 角色落稳后会 reparent 到 roleLayer，不再随方块节点级联 destroy。
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*/
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public static destroyRoleLayerFollowersOf(blockRoot: Node | null): void {
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if (!blockRoot) return;
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const layer = gg?.game?.CurentBattle?.ui_roleLayer;
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if (!layer?.isValid) return;
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const list = layer.getComponentsInChildren(role);
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for (let i = 0; i < list.length; i++) {
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const comp = list[i];
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if (!comp?.node?.isValid) continue;
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const ft = comp.followTarget;
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if (!ft) continue;
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if (!ft.isValid) {
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comp.node.destroy();
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continue;
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}
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let cur: Node | null = ft;
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while (cur) {
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if (cur === blockRoot) {
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comp.node.destroy();
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break;
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}
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cur = cur.parent;
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}
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}
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}
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/**
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* 扫描 ui_roleLayer：followTarget 已失效的孤儿角色（兜底，不依赖方块 onDestroy 时序）。
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*/
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public static pruneOrphanRoleLayer(): void {
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const layer = gg?.game?.CurentBattle?.ui_roleLayer;
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if (!layer?.isValid) return;
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const list = layer.getComponentsInChildren(role);
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for (let i = 0; i < list.length; i++) {
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const comp = list[i];
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if (!comp?.node?.isValid) continue;
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const ft = comp.followTarget;
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if (!ft || !ft.isValid) {
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comp.node.destroy();
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}
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}
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}
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private _destroySelf(): void {
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if (isValid(this.node)) this.node.destroy();
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}
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/**
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* 用 lateUpdate：方块带 RigidBody2D，世界坐标在物理步之后才最终确定；
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* 若在 update 里采样会落后一帧，表现为角色与方块脱节、拖影。
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*/
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lateUpdate(): void {
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const target = this.followTarget;
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if (target != null && !target.isValid) {
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this._destroySelf();
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return;
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}
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const battle = gg?.game?.CurentBattle;
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// 暂停时仍同步位置（预警/弹窗叠层下物理或外力仍可能挪块），避免角色留在旧坐标
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if (battle && (battle.IsEdit || battle.IsGameOver)) {
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return;
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}
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if (!target?.isValid) {
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return;
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}
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if (!this._isFollowTargetWorldSane(target)) {
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console.warn(
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'[role] followTarget 世界坐标异常，销毁角色',
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target.name,
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target.worldPosition,
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'role=',
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this.node.name,
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);
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this._destroySelf();
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return;
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}
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this._syncLayerToParent();
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const tn =
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this._carrierTetri ??
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target.getComponent(tetriNode) ??
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target.getComponentInChildren(tetriNode);
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if (tn?.isSettled && !this._movedToRoleLayer) {
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const layer = gg?.game?.CurentBattle?.ui_roleLayer;
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if (layer?.isValid) {
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Mat4.invert(this._matInv, target.worldMatrix);
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const wp = this.node.worldPosition;
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Vec3.transformMat4(this._offsetInTargetSpace, wp, this._matInv);
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this.node.setParent(layer, true);
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this._applyLayerRecursive(this.node, layer.layer);
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this._applyGroupRecursiveFromRef(this.node, layer);
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this._movedToRoleLayer = true;
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}
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}
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if (this._movedToRoleLayer && target.isValid) {
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Vec3.transformMat4(this._tmpWorldPos, this._offsetInTargetSpace, target.worldMatrix);
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this.node.setWorldPosition(this._tmpWorldPos);
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this.node.worldRotation = target.worldRotation;
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}
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}
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}
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