#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
/*商品结构*/
typedef struct _sp {
	int djid;			//道具的编号
	char name[50];		//道具名称
	double price;		//道具单价
	int stock;			//库存量
	char desc[100];		//道具的功能描述
}SP;
/*背包结构*/
typedef struct _bb {
	int wjid;			//玩家编号
	int count;			//道具数量
	int max;			//背包最大位
	SP prs[8];			//背包中的道具数组
}BB;	
/*玩家结构*/
typedef struct _wj{
	int id;				//玩家编号
	char name[50];		//用户名
	char pass[50];		//密码
	BB bbao;			//玩家的背包
	double gold;		//玩家金币
	double yuanbao;		//玩家元宝
}WJ;
SP* spzz=NULL;
WJ* wjzz=NULL;
int sps=0;
int wjs=0;
void init();
void showsp();
void showwj();
void jy(WJ *wj,int spid );//交易函数参数1参与交易的玩家指针 方便修改金币 参数2玩家购买的商品ID
int main()
{
	//初始化游戏数据
	init();
	showsp();
	showwj();
	system("pause");
	jy(&wjzz[1],3);
	showsp();
	showwj();
	return 0;
}
void jy(WJ* wj, int spid)
{
	int i;
	SP* pdzz = NULL;	
	//判断：玩家的商品的库存，玩家的余额，玩家背包空间
	
	for (i = 0; i< spid; i++) {
		if (spid == spzz[i].djid)
		{
			pdzz = &spzz[i];
			break;
		}
	}
	if (pdzz->stock <= 0)
	{
		printf("库存不足\n");
		return;
	}
	if (wjzz->gold < pdzz->price)
	{
		printf("余额不足\n");
		return;
	}
	if (wjzz->bbao.count >= wjzz->bbao.max&& wjzz->bbao.count!=0)
	{
		printf("背包已满，交易失败！\n");
		return;
	}
	//1商品数-1 
	pdzz->stock--;
	//2玩家金币-商品单价
	wjzz->gold -= pdzz->price;
	//3玩家背包道具+1
	//判断玩家背包中是否有该商品
	
	//如果有该商品数+1
	for (i = 0; i < wjzz->bbao.count; i++)
	{
		if (pdzz == wjzz->bbao.prs[i].djid)
		{
			wjzz->bbao.prs[i].stock++;
			break;
		}
	}
	//如果没有就添加到背包中
	if (i == wjzz->bbao.count)
	{
		int djwz = wjzz->bbao.count;
		//向背包中创建一个商品
		wjzz->bbao.prs[djwz].djid = pdzz->djid;
		wjzz->bbao.prs[djwz].price = pdzz->price;
		wjzz->bbao.prs[djwz].stock = 1;
		strcpy(wjzz->bbao.prs[djwz].name, pdzz->name);
		strcpy(wjzz->bbao.prs[djwz].desc, pdzz->desc);
		wjzz->bbao.count++;
	}
}
void init()
{
	static SP SPall[] = {
		{1,"经验卡",3000,10,"双倍经验"},
		{2,"龙泉剑",7000,8,"攻击带魔法伤害200+"},
		{3,"轩辕剑",6000,6,"攻击力+200"},
		{4,"复活甲",9000,2,"60秒复活一次"},
		{5,"饮血剑",8000,3,"吸血+200"},
	};
	sps = sizeof(SPall)/sizeof(SP);
	spzz = SPall;
	static WJ WJall[] = {
		{1,"张三","123456",.gold = 50000,.bbao.max=8},
		{2,"李四","123456",.gold = 150000,.bbao.max = 8},
		{3,"王五","123456",.gold = 5000,.bbao.max = 8},
		{4,"刘六","123456",.gold = 0,.bbao.max = 8},
	};
	wjs = sizeof(WJall) / sizeof(WJ);
	wjzz = WJall;
}
void showsp()
{	
	int i;
	if (spzz == NULL) return; 
		printf("编号\t名称\t单价\t库存\t商品介绍\n");
	for (i = 0;i<sps;i++)
	{
		printf("%d\t%s\t%.2lf\t%d\t%s\n",spzz[i].djid,spzz[i].name,spzz[i].price,spzz[i].stock,spzz[i].desc);
	}
}
void showwj()
{
	int i,j;
	if (wjzz == NULL)return;
	printf("编号\t名称\t金币\n");
	for (i = 0; i < wjs; i++)
	{
		printf("%d\t%s\t%.2lf\n", wjzz[i].id, wjzz[i].name, wjzz[i].gold);
		for (j = 0; j < wjzz[i].bbao.count;j++) {
			printf("%s\t%d", wjzz[i].bbao.prs[j].name, wjzz[i].bbao.prs[j].stock);

		}
		printf("\n");
	}
	
}