我看这里应该是现在分词作目的状语,= to cadge. 这个句子不能和go doing 混为一谈。你的句子中,come和现在分词中间有地点状语here隔开,完全是不同的结构。
我给你提供几个外刊例句:
1. He came here playing his fiddle.
2. Wasn't it you who came here playing the flute the other evening?
3. I went to a couple of parties with him and came here dancing once or twice.
这几个实际上都表示目的。假如这样的句式:He came here, singing and dancing. 这是伴随状语,表示一边唱一边跳着来到了这里。
个人理解,仅供参考和探讨。