let currentScene = 'TombstoneView'
let isLoadingScene = false

//场景加载进度回调
window.loadSceneProgress = function (progress) {
    if (window.parent && window.parent !== window) {
        window.parent.unityLoading(Math.min(0.99, progress))
    }
}

//场景准备加载回调
window.startLoadScene = function () {
    isLoadingScene = true
}

//场景已完成加载回调
window.loadedScene = function () {
    isLoadingScene = false
    if (window.parent && window.parent !== window) {
        window.parent.unityLoading(1)
    }
}

//设置场景加载完毕时透明度渐变的时长(秒), 0为去除该效果
window.setLoadSceneAnimationTime = function (animationTime) {
    window.unityInstance.SendMessage('SceneLoader', 'SetAnimationTime', animationTime)
}

//切换场景 场景支持以下参数 "TombstoneView" (一单元), "TransitionScene" (空场景), "RoomScene" (碑中世界), "DrawingBoard" (碑影智绘), 切换之前必须判断是否有场景正在加载
window.loadScene = function (sceneName) {
    window.setLoadSceneAnimationTime(sceneName === 'DrawingBoard' ? 1 : 0)
    window.unityInstance.SendMessage('SceneLoader', 'LoadScene', sceneName)
    currentScene = sceneName

    window.onCancelDownload();
}

//设置懒惰模式, 设置后所有动画将会暂停, 切换场景不会重置, 所以在不需要懒惰模式的时候必须要切换回来, 默认为false
window.setLazyMode = function (isLazyMode) {
    window.unityInstance.SendMessage('SceneLoader', 'SetLazyMode', isLazyMode ? 1 : 0)
}

//设置程序时间倍率, float类型, 为0是静止, 为1是正常速度
window.setUnityTimeScale = function (timeScale) {
    window.unityInstance.SendMessage('SceneLoader', 'SetTimeScale', timeScale)
}

//是否正在加载场景
window.isLoadingScene = function () {
    return isLoadingScene
}

// 返回当前场景状态
window.sceneStaRes = function () {
    return currentScene
}