HumanBreak/public/libs/loader.js

///<reference path="../../src/types/core.d.ts" />

/*
loader.js：负责对资源的加载

 */
'use strict';

function loader() {
    this._init();
}

loader.prototype._init = function () {};

////// 设置加载进度条进度 //////
loader.prototype._setStartProgressVal = function (val) {};

////// 设置加载进度条提示文字 //////
loader.prototype._setStartLoadTipText = function (text) {};

loader.prototype._load = function (callback) {
    if (main.useCompress) {
        this._load_async(callback);
    } else {
        this._load_sync(callback);
    }
};

loader.prototype._load_sync = function (callback) {
    this._loadAnimates_sync();
    if (main.mode === 'play') return callback();
    this._loadMusic_sync();
    core.loader._loadMaterials_sync(function () {
        core.loader._loadExtraImages_sync(function () {
            core.loader._loadAutotiles_sync(function () {
                core.loader._loadTilesets_sync(callback);
            });
        });
    });
};

loader.prototype._load_async = function (callback) {
    core.loader._setStartLoadTipText('正在加载资源文件...');
    var all = {};

    var _makeOnProgress = function (name) {
        if (!all[name]) all[name] = { loaded: 0, total: 0, finished: false };
        return function (loaded, total) {
            all[name].loaded = loaded;
            all[name].total = total;
            var allLoaded = 0,
                allTotal = 0;
            for (var one in all) {
                allLoaded += all[one].loaded;
                allTotal += all[one].total;
            }
            if (allTotal > 0) {
                if (allLoaded == allTotal) {
                    core.loader._setStartLoadTipText(
                        '正在处理资源文件... 请稍候...'
                    );
                } else {
                    core.loader._setStartLoadTipText(
                        '正在加载资源文件... ' +
                            core.formatSize(allLoaded) +
                            ' / ' +
                            core.formatSize(allTotal) +
                            ' (' +
                            ((allLoaded / allTotal) * 100).toFixed(2) +
                            '%)'
                    );
                }
                core.loader._setStartProgressVal((allLoaded / allTotal) * 100);
            }
        };
    };
    var _makeOnFinished = function (name) {
        return function () {
            setTimeout(function () {
                all[name].finished = true;
                for (var one in all) {
                    if (!all[one].finished) return;
                }
                callback();
            });
        };
    };

    this._loadAnimates_async(
        _makeOnProgress('animates'),
        _makeOnFinished('animates')
    );
    this._loadMusic_async(_makeOnProgress('sounds'), _makeOnFinished('sounds'));
    this._loadMaterials_async(
        _makeOnProgress('materials'),
        _makeOnFinished('materials')
    );
    this._loadExtraImages_async(
        _makeOnProgress('images'),
        _makeOnFinished('images')
    );
    this._loadAutotiles_async(
        _makeOnProgress('autotiles'),
        _makeOnFinished('autotiles')
    );
    this._loadTilesets_async(
        _makeOnProgress('tilesets'),
        _makeOnFinished('tilesets')
    );
};

// ----- 加载资源文件 ------ //

loader.prototype._loadMaterials_sync = function (callback) {
    if (main.mode === 'play') return callback();
    this._setStartLoadTipText('正在加载资源文件...');
    this.loadImages(
        'materials',
        core.materials,
        core.material.images,
        function () {
            core.loader._loadMaterials_afterLoad();
            callback();
        }
    );
};

loader.prototype._loadMaterials_async = function (onprogress, onfinished) {
    this.loadImagesFromZip(
        'project/materials/materials.h5data',
        core.materials,
        core.material.images,
        onprogress,
        function () {
            core.loader._loadMaterials_afterLoad();
            onfinished();
        }
    );
};

loader.prototype._loadMaterials_afterLoad = function () {
    var images = core.splitImage(core.material.images['icons']);
    for (var key in core.statusBar.icons) {
        if (typeof core.statusBar.icons[key] == 'number') {
            core.statusBar.icons[key] = images[core.statusBar.icons[key]];
            if (core.statusBar.image[key] != null)
                core.statusBar.image[key].src = core.statusBar.icons[key].src;
        }
    }
};

// ------ 加载使用的图片 ------ //

loader.prototype._loadExtraImages_sync = function (callback) {
    if (main.mode === 'play') return callback();
    core.material.images.images = {};
    this._setStartLoadTipText('正在加载图片文件...');
    core.loadImages(
        'images',
        core.images,
        core.material.images.images,
        callback
    );
};

loader.prototype._loadExtraImages_async = function (onprogress, onfinished) {
    core.material.images.images = {};
    var images = core.images;

    // Check .gif
    var gifs = images.filter(function (name) {
        return name.toLowerCase().endsWith('.gif');
    });
    images = images.filter(function (name) {
        return !name.toLowerCase().endsWith('.gif');
    });

    this.loadImagesFromZip(
        'project/images/images.h5data',
        images,
        core.material.images.images,
        onprogress,
        onfinished
    );
    // gif没有被压缩在zip中，延迟加载...
    gifs.forEach(function (gif) {
        this.loadImage('images', gif, function (id, image) {
            if (image != null) {
                core.material.images.images[gif] = image;
            }
        });
    }, this);
};

// ------ 加载自动元件 ------ //

loader.prototype._loadAutotiles_sync = function (callback) {
    if (main.mode === 'play') return callback();
    core.material.images.autotile = {};
    var keys = Object.keys(core.material.icons.autotile);
    var autotiles = {};

    this._setStartLoadTipText('正在加载自动元件...');
    this.loadImages('autotiles', keys, autotiles, function () {
        core.loader._loadAutotiles_afterLoad(keys, autotiles);
        callback();
    });
};

loader.prototype._loadAutotiles_async = function (onprogress, onfinished) {
    core.material.images.autotile = {};
    var keys = Object.keys(core.material.icons.autotile);
    var autotiles = {};

    this.loadImagesFromZip(
        'project/autotiles/autotiles.h5data',
        keys,
        autotiles,
        onprogress,
        function () {
            core.loader._loadAutotiles_afterLoad(keys, autotiles);
            onfinished();
        }
    );
};

loader.prototype._loadAutotiles_afterLoad = function (keys, autotiles) {
    if (main.mode === 'play') return;
    // autotile需要保证顺序
    keys.forEach(function (v) {
        core.material.images.autotile[v] = autotiles[v];
    });

    setTimeout(function () {
        core.maps._makeAutotileEdges();
    });
};

// ------ 加载额外素材 ------ //

loader.prototype._loadTilesets_sync = function (callback) {
    if (main.mode === 'play') return callback();
    core.material.images.tilesets = {};
    this._setStartLoadTipText('正在加载额外素材...');
    this.loadImages(
        'tilesets',
        core.tilesets,
        core.material.images.tilesets,
        function () {
            callback();
        }
    );
};

loader.prototype._loadTilesets_async = function (onprogress, onfinished) {
    core.material.images.tilesets = {};
    this.loadImagesFromZip(
        'project/tilesets/tilesets.h5data',
        core.tilesets,
        core.material.images.tilesets,
        onprogress,
        function () {
            onfinished();
        }
    );
};

// ------ 实际加载一系列图片 ------ //

loader.prototype.loadImages = function (dir, names, toSave, callback) {
    if (main.mode === 'play') return callback();
    if (!names || names.length == 0) {
        if (callback) callback();
        return;
    }
    var items = 0;
    for (var i = 0; i < names.length; i++) {
        this.loadImage(dir, names[i], function (id, image) {
            core.loader._setStartLoadTipText('正在加载图片 ' + id + '...');
            if (toSave[id] !== undefined) {
                if (image != null) toSave[id] = image;
                return;
            }
            toSave[id] = image;
            items++;
            core.loader._setStartProgressVal(items * (100 / names.length));
            if (items == names.length) {
                if (callback) callback();
            }
        });
    }
};

loader.prototype.loadImage = function (dir, imgName, callback) {
    try {
        var name = imgName;
        if (name.indexOf('.') < 0) name = name + '.png';
        var image = new Image();
        image.onload = function () {
            image.setAttribute('_width', image.width);
            image.setAttribute('_height', image.height);
            callback(imgName, image);
        };
        image.onerror = function () {
            callback(imgName, null);
        };
        image.src = 'project/' + dir + '/' + name + '?v=' + main.version;
        if (name.endsWith('.gif')) callback(imgName, null);
    } catch (e) {
        console.error(e);
    }
};

// ------ 从zip中加载一系列图片 ------ //

loader.prototype.loadImagesFromZip = function (
    url,
    names,
    toSave,
    onprogress,
    onfinished
) {
    if (!names || names.length == 0) {
        if (onfinished) onfinished();
        return;
    }

    core.unzip(
        url + '?v=' + main.version,
        function (data) {
            var cnt = 1;
            names.forEach(function (name) {
                var imgName = name;
                if (imgName.indexOf('.') < 0) imgName += '.png';
                if (imgName in data) {
                    var img = new Image();
                    var url = URL.createObjectURL(data[imgName]);
                    cnt++;
                    img.onload = function () {
                        cnt--;
                        URL.revokeObjectURL(url);
                        img.setAttribute('_width', img.width);
                        img.setAttribute('_height', img.height);
                        if (cnt == 0 && onfinished) onfinished();
                    };
                    img.src = url;
                    toSave[name] = img;
                }
            });
            cnt--;
            if (cnt == 0 && onfinished) onfinished();
        },
        null,
        false,
        onprogress
    );
};

// ------ 加载动画文件 ------ //

loader.prototype._loadAnimates_sync = function () {
    if (main.mode === 'play') return;
    this._setStartLoadTipText('正在加载动画文件...');

    if (main.supportBunch) {
        if (core.animates.length > 0) {
            core.http(
                'GET',
                '/all/__all_animates__?v=' +
                    main.version +
                    '&id=' +
                    core.animates.join(','),
                null,
                function (content) {
                    var u = content.split('@@@~~~###~~~@@@');
                    for (var i = 0; i < core.animates.length; ++i) {
                        if (u[i] != '') {
                            core.material.animates[core.animates[i]] =
                                core.loader._loadAnimate(u[i]);
                        } else {
                            console.error(
                                '无法找到动画文件' + core.animates[i] + '！'
                            );
                        }
                    }
                },
                'text/plain; charset=x-user-defined'
            );
        }
        return;
    }

    core.animates.forEach(function (t) {
        core.http(
            'GET',
            'project/animates/' + t + '.animate?v=' + main.version,
            null,
            function (content) {
                core.material.animates[t] = core.loader._loadAnimate(content);
            },
            function (e) {
                console.error(e);
                core.material.animates[t] = null;
            },
            'text/plain; charset=x-user-defined'
        );
    });
};

loader.prototype._loadAnimates_async = function (onprogress, onfinished) {
    core.unzip(
        'project/animates/animates.h5data?v=' + main.version,
        function (animates) {
            for (var name in animates) {
                if (name.endsWith('.animate')) {
                    var t = name.substring(0, name.length - 8);
                    if (core.animates.indexOf(t) >= 0)
                        core.material.animates[t] = core.loader._loadAnimate(
                            animates[name]
                        );
                }
            }
            onfinished();
        },
        null,
        true,
        onprogress
    );
};

loader.prototype._loadAnimate = function (content) {
    try {
        content = JSON.parse(content);
        var data = {};
        data.ratio = content.ratio;
        data.se = content.se;
        data.pitch = content.pitch;
        data.images = [];
        content.bitmaps.forEach(function (t2) {
            if (!t2) {
                data.images.push(null);
            } else {
                try {
                    var image = new Image();
                    image.src = t2;
                    data.images.push(image);
                } catch (e) {
                    console.error(e);
                    data.images.push(null);
                }
            }
        });
        data.frame = content.frame_max;
        data.frames = [];
        content.frames.forEach(function (t2) {
            var info = [];
            t2.forEach(function (t3) {
                info.push({
                    index: t3[0],
                    x: t3[1],
                    y: t3[2],
                    zoom: t3[3],
                    opacity: t3[4],
                    mirror: t3[5] || 0,
                    angle: t3[6] || 0
                });
            });
            data.frames.push(info);
        });
        return data;
    } catch (e) {
        console.error(e);
        return null;
    }
};

// ------ 加载音乐和音效 ------ //

loader.prototype._loadMusic_sync = function () {
    this._setStartLoadTipText('正在加载音效文件...');
    core.bgms.forEach(function (t) {
        core.loader.loadOneMusic(t);
    });
    core.sounds.forEach(function (t) {
        core.loader.loadOneSound(t);
    });
    // 直接开始播放
    core.playBgm(main.startBgm);
};

loader.prototype._loadMusic_async = function (onprogress, onfinished) {
    core.bgms.forEach(function (t) {
        core.loader.loadOneMusic(t);
    });
    core.unzip(
        'project/sounds/sounds.h5data?v=' + main.version,
        function (data) {
            // 延迟解析
            setTimeout(function () {
                for (var name in data) {
                    if (core.sounds.indexOf(name) >= 0) {
                        core.loader._loadOneSound_decodeData(name, data[name]);
                    }
                }
            });
            onfinished();
        },
        null,
        false,
        onprogress
    );

    // 直接开始播放
    core.playBgm(main.startBgm);
};

loader.prototype.loadOneMusic = function (name) {
    var music = new Audio();
    music.preload = 'none';
    if (main.bgmRemote)
        music.src = main.bgmRemoteRoot + core.firstData.name + '/' + name;
    else music.src = 'project/bgms/' + name;
    music.loop = 'loop';
    core.material.bgms[name] = music;
};

loader.prototype.loadOneSound = function (name) {
    core.http(
        'GET',
        'project/sounds/' + name + '?v=' + main.version,
        null,
        function (data) {
            core.loader._loadOneSound_decodeData(name, data);
        },
        function (e) {
            console.error(e);
            core.material.sounds[name] = null;
        },
        null,
        'arraybuffer'
    );
};

loader.prototype._loadOneSound_decodeData = function (name, data) {
    if (data instanceof Blob) {
        var blobReader = new zip.BlobReader(data);
        blobReader.init(function () {
            blobReader.readUint8Array(0, blobReader.size, function (uint8) {
                core.loader._loadOneSound_decodeData(name, uint8.buffer);
            });
        });
        return;
    }
    try {
        core.musicStatus.audioContext.decodeAudioData(
            data,
            function (buffer) {
                core.material.sounds[name] = buffer;
            },
            function (e) {
                console.error(e);
                core.material.sounds[name] = null;
            }
        );
    } catch (e) {
        console.error(e);
        core.material.sounds[name] = null;
    }
};

loader.prototype.loadBgm = function (name) {
    name = core.getMappedName(name);
    if (!core.material.bgms[name]) return;
    // 如果没开启音乐，则不预加载
    if (!core.musicStatus.bgmStatus) return;
    // 是否已经预加载过
    var index = core.musicStatus.cachedBgms.indexOf(name);
    if (index >= 0) {
        core.musicStatus.cachedBgms.splice(index, 1);
    } else {
        // 预加载BGM
        this._preloadBgm(core.material.bgms[name]);
        // core.material.bgms[name].load();
        // 清理尾巴
        if (
            core.musicStatus.cachedBgms.length ==
            core.musicStatus.cachedBgmCount
        ) {
            this.freeBgm(core.musicStatus.cachedBgms.pop());
        }
    }
    // 移动到缓存最前方
    core.musicStatus.cachedBgms.unshift(name);
};

loader.prototype._preloadBgm = function (bgm) {
    bgm.volume = 0;
    bgm.play();
};

loader.prototype.freeBgm = function (name) {
    name = core.getMappedName(name);
    if (!core.material.bgms[name]) return;
    // 从cachedBgms中删除
    core.musicStatus.cachedBgms = core.musicStatus.cachedBgms.filter(function (
        t
    ) {
        return t != name;
    });
    // 清掉缓存
    core.material.bgms[name].removeAttribute('src');
    core.material.bgms[name].load();
    core.material.bgms[name] = null;
    if (name == core.musicStatus.playingBgm) {
        core.musicStatus.playingBgm = null;
    }
    // 三秒后重新加载
    setTimeout(function () {
        core.loader.loadOneMusic(name);
    }, 3000);
};