cocos-enhance-kit/engine/cocos2d/tilemap/CCTiledTile.js

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/**
 * !#en TiledTile can control the specified map tile. 
 * It will apply the node rotation, scale, translate to the map tile.
 * You can change the TiledTile's gid to change the map tile's style.
 * !#zh TiledTile 可以单独对某一个地图块进行操作。
 * 他会将节点的旋转，缩放，平移操作应用在这个地图块上，并可以通过更换当前地图块的 gid 来更换地图块的显示样式。
 * @class TiledTile
 * @extends Component
 */
let TiledTile = cc.Class({
    name: 'cc.TiledTile',
    extends: cc.Component,

    editor: CC_EDITOR && {
        executeInEditMode: true,
        menu: 'i18n:MAIN_MENU.component.renderers/TiledTile',
        help: 'i18n:COMPONENT.help_url.tiledtile',
    },

    ctor () {
        this._layer = null;
    },

    properties: {
        _x: 0,
        _y: 0,

        /**
         * !#en Specify the TiledTile horizontal coordinate，use map tile as the unit.
         * !#zh 指定 TiledTile 的横向坐标，以地图块为单位
         * @property {Number} x
         * @default 0
         */
        x: {
            get () {
                return this._x;
            },
            set (value) {
                if (value === this._x) return;
                if (this._layer && this._layer._isInvalidPosition(value, this._y)) {
                    cc.warn(`Invalid x, the valid value is between [%s] ~ [%s]`, 0, this._layer._layerSize.width);
                    return;
                }
                this._resetTile();
                this._x = value;
                this._updateInfo();
            },
            type: cc.Integer
        },

        /**
         * !#en Specify the TiledTile vertical coordinate，use map tile as the unit.
         * !#zh 指定 TiledTile 的纵向坐标，以地图块为单位
         * @property {Number} y
         * @default 0
         */
        y: {
            get () {
                return this._y;
            },
            set (value) {
                if (value === this._y) return;
                if (this._layer && this._layer._isInvalidPosition(this._x, value)) {
                    cc.warn(`Invalid y, the valid value is between [%s] ~ [%s]`, 0, this._layer._layerSize.height);
                    return;
                }
                this._resetTile();
                this._y = value;
                this._updateInfo();
            },
            type: cc.Integer
        },

        /**
         * !#en Specify the TiledTile gid.
         * !#zh 指定 TiledTile 的 gid 值
         * @property {Number} gid
         * @default 0
         */
        gid: {
            get () {
                if (this._layer) {
                    return this._layer.getTileGIDAt(this._x, this._y);
                }
                return 0;
            },
            set (value) {
                if (this._layer) {
                    this._layer.setTileGIDAt(value, this._x, this._y);
                }
            },
            type: cc.Integer
        }
    },

    onEnable () {
        let parent = this.node.parent;
        this._layer = parent.getComponent(cc.TiledLayer);
        this._resetTile();
        this._updateInfo();
    },

    onDisable () {
        this._resetTile();
    },

    _resetTile () {
        if (this._layer && this._layer.getTiledTileAt(this._x, this._y) === this) {
            this._layer.setTiledTileAt(this._x, this._y, null);
        }
    },

    _updateInfo () {
        if (!this._layer) return;

        let x = this._x,  y = this._y;
        if (this._layer.getTiledTileAt(x, y)) {
            cc.warn('There is already a TiledTile at [%s, %s]', x, y);
            return;
        }
        this.node.setPosition(this._layer.getPositionAt(x, y));
        this._layer.setTiledTileAt(x, y, this);
    },
});

cc.TiledTile = module.exports = TiledTile;