[Spine相关] jsb-spine-skeleton.js 中 对 trackTime 的使用 存在错误.

[finscn]

Cocos Creator version

3.8.5

System information

all

Issue description

错误的代码如下

    animation.setCompleteListener = function (listener) {
        this._compeleteListener = listener;
        this.setCompleteListenerNative(function (trackEntry) {
            const loopCount = Math.floor(trackEntry.trackTime / trackEntry.animationEnd);
            this._compeleteListener && this._compeleteListener(trackEntry, loopCount);
        });
    };

    // The methods are added to be compatibility with old versions.
    animation.setTrackCompleteListener = function (trackEntry, listener) {
        this._trackCompeleteListener = listener;
        this.setTrackCompleteListenerNative(trackEntry, function (trackEntryNative) {
            const loopCount = Math.floor(trackEntryNative.trackTime / trackEntryNative.animationEnd);
            this._trackCompeleteListener && this._trackCompeleteListener(trackEntryNative, loopCount);
        });
    };

通过 trackTime 来计算 loopCount 的算法不对.

spine 官方api 的说明如下:

根据官方说明, trackTime = 0 , 时 animationTime = animationStart .
也就是说. trackTime 是作用于 animationStart 和 animationEnd 这个区间的.

比如, 一个动画的完整时长是 10秒.
那么 默认 的

trackEntry.animationStart = 0
trackEntry.animationEnd = 10

(以上代码并非我杜撰 从spine官方rumtime里可以看到类似逻辑 )

但是 spine是支持 自定义 动画播放区间的.
此时如果我使用了

trackEntry.animationStart = 3
trackEntry.animationEnd = 6
trackEntry.loop = true

让动画 在 3到6秒之间循环播放.

那么上面 计算loopCount 的逻辑就有问题了.

所以正确的方式应该是

const duration = trackEntryNative.animationEnd - trackEntryNative.animationStart;
const loopCount = Math.floor(trackEntryNative.trackTime / duration);

Relevant error log output

No response

Steps to reproduce

.

Minimal reproduction project

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