spine 局部换装

spine 换装接口 setAttachment

首先你在制作骨骼的时候，需要给一个 slot 设置多个 attachment，spine在一个时刻只会显示其中的一个 attachment，动态切换 attachment 调用 SkeletonRenderer::setAttachment接口。这个接口自动绑定并未提供，社区版手动绑定提供给开发者使用。

 

接口示例：（注：只有第一个参数时，表示去掉slot的Attachment，不显示图片）

local hero = sp.SkeletonAnimation:create("build_yellowlightfinished.json", "build_yellowlightfinished.atlas")
hero:setAttachment("changegun", "pc_gungirl_crossbow3")

 

c++：

SkeletonRenderer.cpp

bool SkeletonRenderer::setAttachment (const std::string& slotName, const std::string& attachmentName) {
	return spSkeleton_setAttachment(_skeleton, slotName.c_str(), attachmentName.empty() ? 0 : attachmentName.c_str()) ? true : false;
}

Skeleton.c

int spSkeleton_setAttachment (spSkeleton* self, const char* slotName, const char* attachmentName) {
	int i;
	for (i = 0; i < self->slotsCount; ++i) {
		spSlot *slot = self->slots[i];
		if (strcmp(slot->data->name, slotName) == 0) {
			if (!attachmentName)
				spSlot_setAttachment(slot, 0);
			else {
				spAttachment* attachment = spSkeleton_getAttachmentForSlotIndex(self, i, attachmentName);
				if (!attachment) return 0;
				spSlot_setAttachment(slot, attachment);
			}
			return 1;
		}
	}
	return 0;
}

void spSlot_setAttachment (spSlot* self, spAttachment* attachment) {
	if (attachment == self->attachment) return;
	CONST_CAST(spAttachment*, self->attachment) = attachment;
	SUB_CAST(_spSlot, self)->attachmentTime = self->bone->skeleton->time;
	self->attachmentVerticesCount = 0;
}

 

总结：

制作spine时 一个插槽slot上需要预制多个attachment附件，需要切换显示时 调用setAttachment方法，第一个参数slotName，第二个参数 attachmentName。

最终是spSlot对象 调用了spSlot_setAttachment方法。