1.前言:
1.1本实验实现的贪吃蛇能穿越边界,结束游戏的唯一条件是贪吃蛇到达指定长度
1.2本实验所用LCD可能不是LCD12864,LCD12864所用库为u8glib,笔者在词库中并没有找到型号为ST77355的初始化函数,而是在ucglib中找到,其方法为
Ucglib_ST7735_18x128x160_SWSPI ucg(/*sclk=*/13, /*data=*/11, /*cd=*/9, /*cs=*/10, /*reset=*/8);
1.3代码由学长LCD1602修改而来
2.接线方式
蓝牙模块 | RXD | TXD | VCC | GND |
---|---|---|---|---|
Arduino uno | pin7 | pin6 | 5v | GND |
ST7735S模块 | BLK | CS | DC | RST | SDA | SCL | VDD | GND |
---|---|---|---|---|---|---|---|---|
Arduino uno | 3.3v | pin10 | pin9 | pin8 | pin11 | pin13 | 未接 | GND |
3.话不多说上代码
点击查看代码
#include
#include
#include "Ucglib.h"
#define maxlength 4 //蛇最大长度
Ucglib_ST7735_18x128x160_SWSPI ucg(/*sclk=*/13, /*data=*/11, /*cd=*/9, /*cs=*/10, /*reset=*/8);
SoftwareSerial BT(6, 7);
char val;//蓝牙接收字符
int snake_length = 1;//蛇目前长度
int snake_x[maxlength], snake_y[maxlength];
int direction = 6;//方向判断和闪屏控制
int x = 10;
int y = 10;//记录变化的位置
int food_x;
int food_y;//食物
int gameOver = 0;//结束条件
void setup(void) {
//delay(1000);
ucg.begin(UCG_FONT_MODE_TRANSPARENT);
//ucg.begin(UCG_FONT_MODE_SOLID);
ucg.clearScreen();
BT.begin(9600);
snake_x[0] = 10;
snake_y[0] = 10;
food_x = 10 + 10 * random(0, 9);
food_y = 10 + 10 * random(0, 9);
}
void loop(void) {
if (direction == 6) {//欢迎界面
ucg.setFont(ucg_font_ncenR12_tr);//字体设置
ucg.setPrintPos(40, 80);//设定显示坐标
ucg.print("welcome");
} else
ucg.drawFrame(10, 10, 100, 100);//游戏区域,有没有无所谓
if (BT.available()) {
val = BT.read();
if (val == 'w' && direction != 2) direction = 0;
if (val == 's' && direction != 0) direction = 2;
if (val == 'a' && direction != 1) direction = 3;
if (val == 'd' && direction != 3) direction = 1;
}
if (direction == 0) y -= 10; //w
if (direction == 1) x += 10; //d
if (direction == 2) y += 10; //s
if (direction == 3) x -= 10; //a
if (x < 10) x = 100;
if (x > 100) x = 10;
if (y < 10) y = 100;
if (y > 100) y = 10;//到达边界后穿过边界
if (x == food_x && y == food_y) {//行动后吃到食物
snake_length++;
while (1) {
int flag = 1;//跳出循环标志
food_x = 10 + 10 * random(0, 9);
food_y = 10 + 10 * random(0, 9);//重新生成一个食物
for (int i = snake_length - 1; i >= 0; i--) {//遍历蛇身看食物是否生成在身上
if ((food_x == snake_x[i]) && (food_y == snake_y[i]) || ((food_x == x) && (food_y == y))) {
flag = 0;
break;
}
}
if (snake_length == maxlength) {//游戏结束条件
gameOver = 1;
direction=5;//结束后显示gameover时的闪屏控制
break;
}
if (flag) break;
}
}
if (direction != 6) {
for (int i = snake_length - 1; i > 0; i--) {
snake_x[i] = snake_x[i - 1];
snake_y[i] = snake_y[i - 1];
}
snake_x[0] = x;
snake_y[0] = y;
if (gameOver) {
if(direction==5){
ucg.clearScreen();
direction=1;
}
else{
ucg.setFont(ucg_font_ncenR12_tr);
ucg.setPrintPos(40, 80);
ucg.print("gameover");
}
}
if (!gameOver) {
ucg.clearScreen();
for (int i = 0; i < snake_length; i++) {
ucg.drawFrame(snake_x[i], snake_y[i], 10, 10);
}
ucg.drawFrame(food_x, food_y, 10, 10);
}
}
}
4.来人上图
再上
还上
使用手机app蓝牙串口调试,发送wasd,对应上左下右
5.回顾(复习看)
头文件:
5.1LCD相关函数
LCD初始化
Ucglib_ST7735_18x128x160_SWSPI ucg(/*sclk=*/13, /*data=*/11, /*cd=*/9, /*cs=*/10, /*reset=*/8);
显示矩形,其左上角坐标为(snake_x[i], snake_y[i]),长度和宽度为10
ucg.drawFrame(snake_x[i], snake_y[i], 10, 10);
显示像素点,其坐标坐标为(x,y)
ucg.drawPixel(x,y)
清屏
ucg.clearScreen();
初始化,两者区别不知道
ucg.begin(UCG_FONT_MODE_TRANSPARENT); //ucg.begin(UCG_FONT_MODE_SOLID);
字体、显示坐标、显示函数
ucg.setFont(ucg_font_ncenR12_tr); ucg.setPrintPos(40, 80); ucg.print("welcome");
5.2蓝牙相关函数
SoftwareSerial BT(6, 7);
读app发来的信息
if (BT.available()) char val = BT.read();
6.说明
如有同道中人,请删去注释