// 串口实现石头剪刀布
// 石头：1
// 剪刀：2
// 布：3

#include "Adafruit_SSD1306.h"
#include "Adafruit_GFX.h"
#include "Wire.h"

int user = 0; //代表用户的出拳
int machine = 0; //代表机器的出拳
String result;
String name[] = {"shitou","jiandao","bu"};

Adafruit_SSD1306 oled(128,64,&Wire,-1);

void setup() {
  //串口初始化
  Serial.begin(9600);
  //显示屏初始化
  if(!oled.begin(SSD1306_SWITCHCAPVCC,0x3C)){
    Serial.println("oled init is failure!");
    for(;;);
  }
  //显示屏清屏
  oled.clearDisplay();
}

void winner(int user,int machine){
  switch(user){
    case 1:
      switch(machine){
        case 1:
          result = "平局";
          break;
        case 2:
          result = "用户胜利";
          break;
        case 3:
          result = "机器胜利";
          break;
      }
      break;
    case 2:
      switch(machine){
          case 1:
            result = "机器胜利";
            break;
          case 2:
            result = "平局";
            break;
          case 3:
            result = "用户胜利";
            break;
      }
      break;
    
    case 3:
      switch(machine){
          case 1:
            result = "用户胜利";
            break;
          case 2:
            result = "机器胜利";
            break;
          case 3:
            result = "平局";
            break;
      }
      break;
  }
}

void loop() {
  while(1){
    //等待用户出拳
      Serial.print("用户出拳：");
      while(!user){
        if(Serial.available()>0 && (user = Serial.parseInt())){ //确保用户输入的都是非0的数字
          if(user<0 || user >3){
            Serial.println("出拳错误，请重输入！");
            user = 0;
            Serial.print("用户出拳：");
            continue;
          }
          Serial.println(name[user-1]);
        }
      }

      //机器随机出拳
      Serial.print("机器出拳：");
      while(!machine){
        machine = random(1,4);
        Serial.println(name[machine-1]);
      }

      //获取结果并输出
      winner(user,machine);
      Serial.print("结果为：");
      Serial.println(result);

      //重置
      machine = user = 0;
  }
}