ArmatureDisplay.js

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 Copyright (c) 2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.

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const RenderComponent = require('../../cocos2d/core/components/CCRenderComponent');
const SpriteMaterial = require('../../cocos2d/core/renderer/render-engine').SpriteMaterial;

let EventTarget = require('../../cocos2d/core/event/event-target');

const Node = require('../../cocos2d/core/CCNode');
const Graphics = require('../../cocos2d/core/graphics/graphics');

/**
 * @module dragonBones
 */

let DefaultArmaturesEnum = cc.Enum({ 'default': -1 });
let DefaultAnimsEnum = cc.Enum({ '<None>': 0 });

function setEnumAttr (obj, propName, enumDef) {
    cc.Class.attr(obj, propName, {
        type: 'Enum',
        enumList: cc.Enum.getList(enumDef)
    });
}

/**
 * !#en
 * The Armature Display of DragonBones <br/>
 * <br/>
 * (Armature Display has a reference to a DragonBonesAsset and stores the state for ArmatureDisplay instance,
 * which consists of the current pose's bone SRT, slot colors, and which slot attachments are visible. <br/>
 * Multiple Armature Display can use the same DragonBonesAsset which includes all animations, skins, and attachments.) <br/>
 * !#zh
 * DragonBones 骨骼动画 <br/>
 * <br/>
 * (Armature Display 具有对骨骼数据的引用并且存储了骨骼实例的状态，
 * 它由当前的骨骼动作，slot 颜色，和可见的 slot attachments 组成。<br/>
 * 多个 Armature Display 可以使用相同的骨骼数据，其中包括所有的动画，皮肤和 attachments。)<br/>
 *
 * @class ArmatureDisplay
 * @extends RenderComponent
 */
let ArmatureDisplay = cc.Class({
    name: 'dragonBones.ArmatureDisplay',
    extends: RenderComponent,
    mixins: [EventTarget],

    editor: CC_EDITOR && {
        menu: 'i18n:MAIN_MENU.component.renderers/DragonBones',
        //help: 'app://docs/html/components/spine.html', // TODO help document of dragonBones
    },
    
    properties: {
        _factory: {
            default: null,
            type: dragonBones.CCFactory,
            serializable: false,
        },

        /**
         * !#en
         * The DragonBones data contains the armatures information (bind pose bones, slots, draw order,
         * attachments, skins, etc) and animations but does not hold any state.<br/>
         * Multiple ArmatureDisplay can share the same DragonBones data.
         * !#zh
         * 骨骼数据包含了骨骼信息（绑定骨骼动作，slots，渲染顺序，
         * attachments，皮肤等等）和动画但不持有任何状态。<br/>
         * 多个 ArmatureDisplay 可以共用相同的骨骼数据。
         * @property {DragonBonesAsset} dragonAsset
         */
        dragonAsset: {
            default: null,
            type: dragonBones.DragonBonesAsset,
            notify () {
                // parse the asset data
                this._parseDragonAsset();
                this._refresh();
                if (CC_EDITOR) {
                    this._defaultArmatureIndex = 0;
                    this._animationIndex = 0;
                }
            },
            tooltip: CC_DEV && 'i18n:COMPONENT.dragon_bones.dragon_bones_asset'
        },

        /**
         * !#en
         * The atlas asset for the DragonBones.
         * !#zh
         * 骨骼数据所需的 Atlas Texture 数据。
         * @property {DragonBonesAtlasAsset} dragonAtlasAsset
         */
        dragonAtlasAsset: {
            default: null,
            type: dragonBones.DragonBonesAtlasAsset,
            notify () {
                // parse the atlas asset data
                this._parseDragonAtlasAsset();
                this._buildArmature();
                this._activateMaterial();
            },
            tooltip: CC_DEV && 'i18n:COMPONENT.dragon_bones.dragon_bones_atlas_asset'
        },

        _armatureName: '',
        /**
         * !#en The name of current armature.
         * !#zh 当前的 Armature 名称。
         * @property {String} armatureName
         */
        armatureName: {
            get () {
                return this._armatureName;
            },
            set (value) {
                this._armatureName = value;
                let animNames = this.getAnimationNames(this._armatureName);

                if (!this.animationName || animNames.indexOf(this.animationName) < 0) {
                    if (CC_EDITOR) {
                        this.animationName = animNames[0];
                    }
                    else {
                        // Not use default animation name at runtime
                        this.animationName = '';
                    }
                }

                if (this._armature) {
                    this._factory._dragonBones.clock.remove(this._armature);
                }
                this._refresh();
                if (this._armature) {
                    this._factory._dragonBones.clock.add(this._armature);
                }
                
            },
            visible: false
        },

        _animationName: '',
        /**
         * !#en The name of current playing animation.
         * !#zh 当前播放的动画名称。
         * @property {String} animationName
         */
        animationName: {
            get () {
                return this._animationName;
            },
            set (value) {
                this._animationName = value;
            },
            visible: false
        },

        /**
         * @property {Number} _defaultArmatureIndex
         */
        _defaultArmatureIndex: {
            default: 0,
            notify () {
                let armatureName = '';
                if (this.dragonAsset) {
                    let armaturesEnum;
                    if (this.dragonAsset) {
                        armaturesEnum = this.dragonAsset.getArmatureEnum();
                    }
                    if (!armaturesEnum) {
                        return cc.errorID(7400, this.name);
                    }

                    armatureName = armaturesEnum[this._defaultArmatureIndex];
                }

                if (armatureName !== undefined) {
                    this.armatureName = armatureName;
                }
                else {
                    cc.errorID(7401, this.name);
                }
            },
            type: DefaultArmaturesEnum,
            visible: true,
            editorOnly: true,
            animatable: false,
            displayName: "Armature",
            tooltip: CC_DEV && 'i18n:COMPONENT.dragon_bones.armature_name'
        },

        // value of 0 represents no animation
        _animationIndex: {
            default: 0,
            notify () {
                if (this._animationIndex === 0) {
                    this.animationName = '';
                    return;
                }

                let animsEnum;
                if (this.dragonAsset) {
                    animsEnum = this.dragonAsset.getAnimsEnum(this.armatureName);
                }

                if (!animsEnum) {
                    return;
                }

                let animName = animsEnum[this._animationIndex];
                if (animName !== undefined) {
                    this.animationName = animName;
                }
                else {
                    cc.errorID(7402, this.name);
                }
            },
            type: DefaultAnimsEnum,
            visible: true,
            editorOnly: true,
            animatable: false,
            displayName: 'Animation',
            tooltip: CC_DEV && 'i18n:COMPONENT.dragon_bones.animation_name'
        },

        /**
         * !#en The time scale of this armature.
         * !#zh 当前骨骼中所有动画的时间缩放率。
         * @property {Number} timeScale
         * @default 1
         */
        timeScale: {
            default: 1,
            notify () {
                this._armature.animation.timeScale = this.timeScale;
            },
            tooltip: CC_DEV && 'i18n:COMPONENT.dragon_bones.time_scale'
        },

        /**
         * !#en The play times of the default animation.
         *      -1 means using the value of config file;
         *      0 means repeat for ever
         *      >0 means repeat times
         * !#zh 播放默认动画的循环次数
         *      -1 表示使用配置文件中的默认值;
         *      0 表示无限循环
         *      >0 表示循环次数
         * @property {Number} playTimes
         * @default -1
         */
        playTimes: {
            default: -1,
            tooltip: CC_DEV && 'i18n:COMPONENT.dragon_bones.play_times'
        },

        /**
         * !#en Indicates whether open debug bones.
         * !#zh 是否显示 bone 的 debug 信息。
         * @property {Boolean} debugBones
         * @default false
         */
        debugBones: {
            default: false,
            notify () {
                this._initDebugDraw();
            },
            tooltip: CC_DEV && 'i18n:COMPONENT.dragon_bones.debug_bones'
        },
    },

    ctor () {
        this._inited = false;
        this._factory = dragonBones.CCFactory.getInstance();
    },

    __preload () {
        this._init();
    },

    _init () {
        if (this._inited) return;
        this._inited = true;

        this._parseDragonAsset();
        this._parseDragonAtlasAsset();
        this._refresh();
        this._activateMaterial();
    },

    onEnable () {
        this._super();
        if (this._armature) {
            this._factory._dragonBones.clock.add(this._armature);
        }
    },

    onDisable () {
        this._super();
        if (this._armature) {
            this._factory._dragonBones.clock.remove(this._armature);
        }
    },

    onDestroy () {
        this._super();
        this._inited = false;
        if (this._armature) {
            this._armature.dispose();
            this._armature = null;
        }
    },

    _initDebugDraw () {
        if (this.debugBones) {
            if (!this._debugDraw) {
                let debugDrawNode = new cc.PrivateNode();
                debugDrawNode.name = 'DEBUG_DRAW_NODE';
                let debugDraw = debugDrawNode.addComponent(Graphics);
                debugDraw.lineWidth = 1;
                debugDraw.strokeColor = cc.color(255, 0, 0, 255);
                
                this._debugDraw = debugDraw;
            }

            this._debugDraw.node.parent = this.node;
        }
        else if (this._debugDraw) {
            this._debugDraw.node.parent = null;
        }
    },

    _activateMaterial () {
        let texture = this.dragonAtlasAsset && this.dragonAtlasAsset.texture;
        

        // Get material
        let material = this._material || new SpriteMaterial();
        material.useColor = false;

        if (texture) {
            material.texture = texture;
            this.markForUpdateRenderData(true);
            this.markForRender(true);
        }
        else {
            this.disableRender();
        }

        this._updateMaterial(material);
    },

    _buildArmature () {
        if (!this.dragonAsset || !this.dragonAtlasAsset || !this.armatureName) return;

        let factory = dragonBones.CCFactory.getInstance();
        this._armature = factory.buildArmatureDisplay(this.armatureName, this.dragonAsset._dragonBonesData.name, this);
        this._armature.animation.timeScale = this.timeScale;

        if (this.animationName) {
            this.playAnimation(this.animationName, this.playTimes);
        }
    },

    _parseDragonAsset () {
        if (this.dragonAsset) {
            this.dragonAsset.init(this._factory);
        }
    },

    _parseDragonAtlasAsset () {
        if (this.dragonAtlasAsset) {
            this.dragonAtlasAsset.init(this._factory);
        }
    },

    _refresh () {
        this._buildArmature();

        if (CC_EDITOR) {
            // update inspector
            this._updateArmatureEnum();
            this._updateAnimEnum();
            Editor.Utils.refreshSelectedInspector('node', this.node.uuid);
        }
    },

    // update animation list for editor
    _updateAnimEnum: CC_EDITOR && function () {
        let animEnum;
        if (this.dragonAsset) {
            animEnum = this.dragonAsset.getAnimsEnum(this.armatureName);
        }
        // change enum
        setEnumAttr(this, '_animationIndex', animEnum || DefaultAnimsEnum);
    },

    // update armature list for editor
    _updateArmatureEnum: CC_EDITOR && function () {
        let armatureEnum;
        if (this.dragonAsset) {
            armatureEnum = this.dragonAsset.getArmatureEnum();
        }
        // change enum
        setEnumAttr(this, '_defaultArmatureIndex', armatureEnum || DefaultArmaturesEnum);
    },

    /**
     * !#en
     * Play the specified animation.
     * Parameter animName specify the animation name.
     * Parameter playTimes specify the repeat times of the animation.
     * -1 means use the value of the config file.
     * 0 means play the animation for ever.
     * >0 means repeat times.
     * !#zh
     * 播放指定的动画.
     * animName 指定播放动画的名称。
     * playTimes 指定播放动画的次数。
     * -1 为使用配置文件中的次数。
     * 0 为无限循环播放。
     * >0 为动画的重复次数。
     * @method playAnimation
     * @param {String} animName
     * @param {Number} playTimes
     * @return {dragonBones.AnimationState}
     */
    playAnimation (animName, playTimes) {
        if (this._armature) {
            this.playTimes = (playTimes === undefined) ? -1 : playTimes;
            this.animationName = animName;
            return this._armature.animation.play(animName, this.playTimes);
        }

        return null;
    },

    /**
     * !#en
     * Get the all armature names in the DragonBones Data.
     * !#zh
     * 获取 DragonBones 数据中所有的 armature 名称
     * @method getArmatureNames
     * @returns {Array}
     */
    getArmatureNames () {
        var dragonBonesData = this.dragonAsset && this.dragonAsset._dragonBonesData;
        return (dragonBonesData && dragonBonesData.armatureNames) || [];
    },

    /**
     * !#en
     * Get the all animation names of specified armature.
     * !#zh
     * 获取指定的 armature 的所有动画名称。
     * @method getAnimationNames
     * @param {String} armatureName
     * @returns {Array}
     */
    getAnimationNames (armatureName) {
        let ret = [];
        if (this.dragonAsset && this.dragonAsset._dragonBonesData) {
            let armatureData = this.dragonAsset._dragonBonesData.getArmature(armatureName);
            if (armatureData) {
                for (let animName in armatureData.animations) {
                    if (armatureData.animations.hasOwnProperty(animName)) {
                        ret.push(animName);
                    }
                }
            }
        }

        return ret;
    },

    /**
     * !#en
     * Add event listener for the DragonBones Event.
     * !#zh
     * 添加 DragonBones 事件监听器。
     * @method addEventListener
     * @param {String} type - A string representing the event type to listen for.
     * @param {Function} listener - The callback that will be invoked when the event is dispatched.
     * @param {Event} listener.event event
     * @param {Object} [target] - The target (this object) to invoke the callback, can be null
     */
    addEventListener (eventType, listener, target) {
        this.addDBEventListener(eventType, listener, target);
    },

    /**
     * !#en
     * Remove the event listener for the DragonBones Event.
     * !#zh
     * 移除 DragonBones 事件监听器。
     * @method removeEventListener
     * @param {String} type - A string representing the event type to listen for.
     * @param {Function} [listener]
     * @param {Object} [target]
     */
    removeEventListener (eventType, listener, target) {
        this.removeDBEventListener(eventType, listener, target);
    },

    /**
     * !#en
     * Build the armature for specified name.
     * !#zh
     * 构建指定名称的 armature 对象
     * @method buildArmature
     * @param {String} armatureName
     * @param {Node} node
     * @return {dragonBones.ArmatureDisplay}
     */
    buildArmature (armatureName, node) {
        return dragonBones.CCFactory.getInstance().createArmatureNode(this, armatureName, node);
    },

    /**
     * !#en
     * Get the current armature object of the ArmatureDisplay.
     * !#zh
     * 获取 ArmatureDisplay 当前使用的 Armature 对象
     * @method armature
     * @returns {Object}
     */
    armature () {
        return this._armature;
    },

    ////////////////////////////////////
    // dragonbones api
    dbInit (armature) {
        this._armature = armature;
    },

    dbClear () {
        this._armature = null;
    },

    dbUpdate () {
        if (!CC_DEBUG) return;
        this._initDebugDraw();

        let debugDraw = this._debugDraw;
        if (!debugDraw) return;
        
        debugDraw.clear();
        let bones = this._armature.getBones();
        for (let i = 0, l = bones.length; i < l; i++) {
            let bone =  bones[i];
            let boneLength = Math.max(bone.boneData.length, 5);
            let startX = bone.globalTransformMatrix.tx;
            let startY = -bone.globalTransformMatrix.ty;
            let endX = startX + bone.globalTransformMatrix.a * boneLength;
            let endY = startY - bone.globalTransformMatrix.b * boneLength;

            debugDraw.moveTo(startX, startY);
            debugDraw.lineTo(endX, endY);
            debugDraw.stroke();
        }
    },

    advanceTimeBySelf  (on) {
        this.shouldAdvanced = !!on;
    },

    hasDBEventListener (type) {
        return this.hasEventListener(type);
    },

    addDBEventListener (type, listener, target) {
        this.on(type, listener, target);
    },

    removeDBEventListener (type, listener, target) {
        this.off(type, listener, target);
    },

    dispatchDBEvent  (type, eventObject) {
        this.emit(type, eventObject);
    },
    ////////////////////////////////////
});

module.exports = dragonBones.ArmatureDisplay = ArmatureDisplay;