140 lines
5.7 KiB
C
140 lines
5.7 KiB
C
// #include <stdio.h>
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#include <rtthread.h>
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#include <stdbool.h>
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#include "my_func.h"
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#include "mysnake.h"
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#include <time.h>
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#include <rtatomic.h>
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#define LCD_MAX 240 //屏幕大小(长宽像素)
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#define SNAKE_SIZE 40 //蛇身大小(格子大小)
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#define SNAKE_MAX (LCD_MAX / SNAKE_SIZE) //每行格子数（最大蛇长+1）
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rt_atomic_t now_direction = 3;
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rt_atomic_t snake_pressed = 0;
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extern rt_atomic_t page_chosen;
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extern rt_atomic_t page_first;
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extern rt_atomic_t page_stop;
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int snake_max = SNAKE_MAX * 3;
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int snake_len = 3;
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// bool snake_table[SNAKE_MAX][SNAKE_MAX] = {0};
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// struct My_snake
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// {
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// int x;
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// int y;
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// }snake_list[SNAKE_MAX*SNAKE_MAX] = {0};
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// /* rt_event_t 是指向事件结构体的指针类型 */
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// typedef struct My_snake* my_snake_t;
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void snake_entry(void *parameter)
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{
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system("irq");
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time_t t;
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/* 初始化随机数发生器 */
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srand((unsigned)time(&t));
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int snake_list[SNAKE_MAX + 1][2] = {0};//储存蛇头、蛇尾、蛇身坐标
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int snake_direction[4][2] = {{0, -1}, {-1, 0}, {0, 1}, {1, 0}}; // 上，左，下，右
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int snake_food[2];//果子位置
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char snake_dirshow[4][7] = {"upup", "left", "down", "rigt"};//显示操作用词
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char tmp[10];//用于字符串转换
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int snake_head = 2, snake_tail = 0; // 蛇头，蛇尾
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//设置初始位置
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snake_list[1][0] = SNAKE_MAX / 2;
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snake_list[1][1] = SNAKE_MAX / 2;
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snake_list[0][0] = snake_list[1][0] - 1;
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snake_list[0][1] = snake_list[1][1];
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snake_list[2][0] = snake_list[1][0] + 1;
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snake_list[2][1] = snake_list[1][1];
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// snake_table[snake_list[0][0]][snake_list[0][1]] = 1;
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// snake_table[snake_list[1][0]][snake_list[1][1]] = 1;
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// snake_table[snake_list[2][0]][snake_list[2][1]] = 1;
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// snake_address(snake_list[0][0], snake_list[0][1], SNAKE_SIZE, BLACK);
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// snake_address(snake_list[1][0], snake_list[1][1], SNAKE_SIZE, BLACK);
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// snake_address(snake_list[2][0], snake_list[2][1], SNAKE_SIZE, BLACK);
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snake_food[0] = rand() % SNAKE_MAX;
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snake_food[1] = rand() % SNAKE_MAX;
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// snake_address(snake_food[0], snake_food[1], SNAKE_SIZE, GREEN);
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int new_head_x = 0, new_head_y = 0;//新的蛇头位置
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int new_direction = 0,snake_now=0;//随机生成的新方向，重新显示时当前位置的队列编号
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while (1)
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{
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//当页面符合且不处于暂停状态才运行
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if (page_chosen == 1&&!page_stop)
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{
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// 刚切换页面过来，重新显示
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if (page_first == 1)
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{
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rt_kprintf("page:snake\n");
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page_first = 0;
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lcd_fill(0, 0, 240, 240, WHITE);
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snake_address(snake_food[0], snake_food[1], SNAKE_SIZE, GREEN);
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snake_now = snake_tail-1;
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// for (int i = 0; i = snake_len && i < SNAKE_MAX - 1; i++)
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do{
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snake_now=(snake_now+1)%SNAKE_MAX;
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snake_address(snake_list[snake_now][0], snake_list[snake_now][1], SNAKE_SIZE, BLACK);
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}while(snake_now!=snake_head);
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}
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//如果长期（约3*SNAKE_MAX）没有按键，则随机改变方向
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if (!snake_pressed)
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{
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// 50%的概率保持当前方向
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if (rand() % 100 < 50)
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{
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new_direction = rand() % 3;
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now_direction = (now_direction + 3 + new_direction) % 4; // 防止反向,走回头路
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}
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}
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else
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{
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rt_atomic_add(&snake_pressed, -1);
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}
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// 计算新蛇头位置、并显示坐标
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new_head_x = (snake_list[snake_head][0] + snake_direction[now_direction][0] + SNAKE_MAX) % (SNAKE_MAX);
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new_head_y = (snake_list[snake_head][1] + snake_direction[now_direction][1] + SNAKE_MAX) % (SNAKE_MAX);
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rt_sprintf(tmp, "(%d,%d)", new_head_x, new_head_y);
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// rt_kprintf("head:%d,%d\n", snake_list[snake_head][0], snake_list[snake_head][1]);
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lcd_show_string(20, 20, 16, snake_dirshow[now_direction]);
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lcd_show_string(20 + 16 * 4, 20, 16, tmp);
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snake_address(new_head_x, new_head_y, SNAKE_SIZE, BLACK);
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// 蛇头碰到果子
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if (new_head_x == snake_food[0] && new_head_y == snake_food[1])
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{
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//新生成、显示果子
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snake_food[0] = rand() % SNAKE_MAX;
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snake_food[1] = rand() % SNAKE_MAX;
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snake_address(snake_food[0], snake_food[1], SNAKE_SIZE, GREEN);
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// 长度增加、打印
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snake_len++;
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rt_sprintf(tmp, "%d", snake_len);
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lcd_show_string(100, 105, 32, tmp);
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// 防止蛇咬尾出现bug，限制最长为SNAKE_MAX-1，将蛇尾涂白
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if (snake_len >= SNAKE_MAX)
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{
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snake_address(snake_list[snake_tail][0], snake_list[snake_tail][1], SNAKE_SIZE, WHITE);
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snake_tail = (snake_tail + 1) % (SNAKE_MAX);
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}
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}
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else
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{
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//若果子在蛇尾则不涂白
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if (snake_list[snake_tail][0] == snake_food[0] && snake_list[snake_tail][1] == snake_food[1])
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{
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}
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else
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{
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snake_address(snake_list[snake_tail][0], snake_list[snake_tail][1], SNAKE_SIZE, WHITE);
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}
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snake_tail = (snake_tail + 1) % (SNAKE_MAX);
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}
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//记录新的蛇头
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snake_head = (snake_head + 1) % (SNAKE_MAX);
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snake_list[snake_head][0] = new_head_x;
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snake_list[snake_head][1] = new_head_y;
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}
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rt_thread_mdelay(900);
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}
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}
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