02 贪吃蛇-编程知识

前言

呵呵这是不知道在哪里看到的别人做的一个贪吃蛇

因此也把我之前的贪吃蛇移植上来了

当然这个不过是为了简单的入门了解, 呵呵

然后 c++版本的贪吃蛇需要先移植成 c 版本, 然后再根据单片机相关设计调整

比如 led 点阵的输出, 比如 c99 语法的一些不兼容

主控制程序

整体程序的结构如下, Test02Snake 是主控制程序, utils 是公共的东西

snake 是贪吃蛇的相关实现

Test02Snake.c


#include "utils.h"
#include "snake.h"/*** main related*/
long counter = 1;u8 gled_end[8] = {0x38,0x7C,0x7E,0x3F,0x3F,0x7E,0x7C,0x38};void main() {int i;u8 xList[8] = {1, 2, 3, 4, 6}, yList[8] = {1, 2, 3, 4, 7};u8 word[8];Snake snakeIns;Snake *snake = &snakeIns;// snake = snakeInit();snakeInit(snake);snake->init(snake);snake->setMap(snake);snake->createFood(snake);ledToggle(6);while (1) {//  		snake->print(snake);snake->running(snake, counter);if (snake->isOver(snake))break;delay_ms(5);counter++;}while(1) {lightTubeByInt(snake->grade);printLedWord(8, gled_end);}}

utils.h

#ifndef _utils_H
#define _utils_H#include "reg52.h"
#include "stdlib.h"typedef unsigned int u16;
typedef unsigned char u8;
typedef unsigned long u32;// led dot related 
sbit SHIFT_REG_INPUT = P3 ^6;
sbit STORE_REG_INPUT = P3 ^5;
sbit SERIAL_PORT_INPUT = P3 ^4;
#define LEDDZ_COL_PORT P0// tube related 
sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;
#define SMG_A_DP_PORT	P0// keyboard matrix related
#define KEY_MATRIX_PORT	P1/*** delay $delayIn10Us us* @param ten_us*/
void delay_10us(u16 ten_us);/*** delay $delayInMs ms* @param ms*/
void delay_ms(u16 ms);/*** control led[pos] on/off* @param pos* @param on*/
void ledCtl(u8 pos, u8 on);/*** toggle led[pos] on/off* @param pos* @param on*/
void ledToggle(u8 pos);/*** random number * @param seed* @param max* @param min*/
unsigned int randomInt(unsigned int seed, unsigned int max, unsigned int min);/*** printLedWord** @param wordLength* @param word*/
void printLedWord(int wordLength, u8 *word);/*** lightTube* @param word*/
void lightTube(u8 *word);/*** lightTubeByInt* @param word*/
void lightTubeByInt(u16 value);/*** lightTubeByIntNTimes* @param word*/
void lightTubeByIntSeconds(u16 value, u16 s);/*** keyboardMatrixFlipScan* @return*/
u8 keyboardMatrixFlipScan(void);#endif

utils.c

#include "utils.h"u8 gled_col[8] = {0x7f, 0xbf, 0xdf, 0xef, 0xf7, 0xfb, 0xfd, 0xfe};u8 gsmg_code[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};void hc595_write_data(u8 dat);void delay_10us(u16 ten_us) {while (ten_us--);
}void delay_ms(u16 ms) {u16 i, j;for (i = ms; i > 0; i--)for (j = 110; j > 0; j--);
}void ledCtl(u8 pos, u8 on) {if(on == 0) {P2 |= (1 << pos);return;}P2 &= (~(1 << pos));
}void ledToggle(u8 pos) {P2 ^= (1 << pos);
}unsigned int randomInt(unsigned int seed, unsigned int min, unsigned int max) {return rand() % (max + 1 - min) + min;
}void printLedWord(int wordLength, u8 *word) {u8 i;for (i = 0; i < wordLength; i++) {LEDDZ_COL_PORT = gled_col[i];hc595_write_data(word[i]);delay_10us(10);hc595_write_data(0x00);}
}void hc595_write_data(u8 dat) {u8 i = 0;for (i = 0; i < 8; i++) {SERIAL_PORT_INPUT = dat >> 7;dat <<= 1;SHIFT_REG_INPUT = 0;delay_10us(1);SHIFT_REG_INPUT = 1;delay_10us(1);}STORE_REG_INPUT = 1;delay_10us(1);STORE_REG_INPUT = 0;
}void lightTube(u8 *word) {u8 i=0;for(i=0;i<8;i++) {switch(i) {case 0: LSC=1;LSB=1;LSA=1;break;case 1: LSC=1;LSB=1;LSA=0;break;case 2: LSC=1;LSB=0;LSA=1;break;case 3: LSC=1;LSB=0;LSA=0;break;case 4: LSC=0;LSB=1;LSA=1;break;case 5: LSC=0;LSB=1;LSA=0;break;case 6: LSC=0;LSB=0;LSA=1;break;case 7: LSC=0;LSB=0;LSA=0;break;}SMG_A_DP_PORT = gsmg_code[word[i]];delay_10us(10);SMG_A_DP_PORT=0x00;}
}void lightTubeByInt(u16 value) {u16 i;u8 idx = 7;u8 word[8];for(i=0; i<8; i++) {word[i] = 0;}i = value;while(i > 0) {word[idx --] = i % 10;i = i / 10;}lightTube(word);
}void lightTubeByIntSeconds(u16 value, u16 s) {u16 i, j;for (i = s * 8; i > 0; i--)for (j = 110; j > 0; j--)lightTubeByInt(value);
}u8 keyboardMatrixFlipScan(void) {static u8 result = 0;KEY_MATRIX_PORT=0x0f;if(KEY_MATRIX_PORT!=0x0f) {delay_10us(1000);if(KEY_MATRIX_PORT!=0x0f) {KEY_MATRIX_PORT=0x0f;switch(KEY_MATRIX_PORT) {case 0x07: result=1;break;case 0x0b: result=2;break;case 0x0d: result=3;break;case 0x0e: result=4;break;}KEY_MATRIX_PORT=0xf0;switch(KEY_MATRIX_PORT) {case 0x70: result=result;break;case 0xb0: result=result+4;break;case 0xd0: result=result+8;break;case 0xe0: result=result+12;break;}while(KEY_MATRIX_PORT!=0xf0);}}elseresult=0;return result;
}

贪吃蛇的实现

snake.h

#ifndef _snake_H
#define _snake_H#include "utils.h"typedef struct Node {int x;int y;
} Node;typedef struct Snake {struct Node *head;        struct Node *food;        int flag;        int grade;        int level;        int direction;void (*setMap)(struct Snake *snake);          int (*isOver)(struct Snake *snake);            void (*go)(struct Snake *snake);                void (*running)(struct Snake *snake, int counter);void (*isKeyPressed)(struct Snake *snake);void (*init)(struct Snake *snake);void (*addNode)(struct Snake *snake, int x, int y);            void (*moveTo)(struct Snake *snake, int direction);            void (*createFood)(struct Snake *snake);        int (*getFood)(struct Snake *snake);            int (*isFoodCover)(struct Snake *snake);        int (*isSuccess)(struct Snake *snake);        void (*print)(struct Snake *snake);            
} Snake;void snakeInit(struct Snake *snake);#endif

snake.c

如下就是贪吃蛇的初始化, 生成食物, 运行, 等等相关


#include "snake.h"void position(int, int);struct Node *nodeInit(int, int y);void snakeInit(Snake *snake);void setMap(struct Snake *snake);int isOver(struct Snake *snake);void go(struct Snake *snake);void running(struct Snake *snake, int counter);void isKeyPressed(struct Snake *snake);void init(struct Snake *snake);void addNode(struct Snake *snake, int x, int y);void moveTo(struct Snake *snake, int direction);void createFood(struct Snake *snake);int getFood(struct Snake *snake);int isFoodCover(struct Snake *snake);int isSuccess(struct Snake *snake);void print(struct Snake *snake);int snakeHeadInitX = 2;
int snakeHeadInitY = 2;
int gameRangeXMax = 8;
int gameRangeYMax = 8;
int snakeNodeXOffset = 1;
int snakeNodeYOffset = 1;Node nodeList[100];
Node foodNodeIns;
Node *foodNode = &foodNodeIns;void snakeInit(struct Snake *snake) {// struct Snake *result = malloc(sizeof(struct Snake));
//    snake->head = nodeInit(snakeHeadInitX, snakeHeadInitY);snake->head = &nodeList[0];snake->level = 0;addNode(snake, snakeHeadInitX, snakeHeadInitY);snake->flag = 0;snake->direction = 2;snake->grade = 0;snake->setMap = setMap;snake->isOver = isOver;snake->go = go;snake->running = running;snake->isKeyPressed = isKeyPressed;snake->init = init;snake->addNode = addNode;snake->moveTo = moveTo;snake->createFood = createFood;snake->getFood = getFood;snake->isFoodCover = isFoodCover;snake->isSuccess = isSuccess;snake->print = print;
}void setMap(struct Snake *snake) {}void init(struct Snake *snake) {int i;struct Node *p = snake->head;for (i = 1; i <= 2; i++) {addNode(snake, p->x - (i * snakeNodeXOffset), p->y);}
}void addNode(struct Snake *snake, int x, int y) {nodeList[snake->level].x = x;nodeList[snake->level].y = y;snake->level ++;snake->grade = snake->grade + 5 * (snake->level + 1);
}void moveTo(struct Snake *snake, int direction) {u8 i;for(i = snake->level - 1; i > 0; i--) {nodeList[i].x = nodeList[i-1].x;nodeList[i].y = nodeList[i-1].y;}snake->direction = direction;if ((snake->direction + 2) % 2 == 1) {snake->head->y -= snake->direction;} else {snake->head->x += (snake->direction / 2);}
}int isOver(struct Snake *snake) {struct Node *head = snake->head;struct Node *p;u8 i;if (head->x >= (gameRangeXMax * snakeNodeXOffset) || head->x < 0|| head->y >= (gameRangeYMax * snakeNodeYOffset) || head->y < 0)return 1;for(i=2; i<snake->level; i++) {p = &nodeList[i];if (head->x == p->x && head->y == p->y) return 1;}if (snake->level >= 10) return 1;return 0;
}void createFood(struct Snake *snake) {do {foodNode->x = randomInt(0, 0, (gameRangeXMax-1) * snakeNodeXOffset);foodNode->y = randomInt(0, 0, (gameRangeYMax-1) * snakeNodeYOffset);} while (snake->isFoodCover(snake));
}int getFood(struct Snake *snake) {struct Node *head = snake->head;struct Node *p;if (head->x == foodNode->x && head->y == foodNode->y) {p = &nodeList[snake->level-1];addNode(snake, p->x, p->y);return 1;}return 0;
}int isFoodCover(struct Snake *snake) {u8 i;struct Node *p = snake->head;struct Node *food = foodNode;for(i=0; i<snake->level; i++) {p = &nodeList[i];if (food->x == p->x && food->y == p->y) return 1;}return 0;
}void go(struct Snake *snake) {struct Node *head = snake->head;struct Node *p;snake->moveTo(snake, snake->direction);snake->print(snake);
}long snakeTurnNextThreshold = 1;
int snakeMaxRowCount = 50;
int snakeCurrentRowIdx = 1;void running(struct Snake *snake, int counter) {struct Node *p;if (counter % snakeTurnNextThreshold == 0) {snakeCurrentRowIdx = (snakeCurrentRowIdx + 1) % snakeMaxRowCount;}snake->isKeyPressed(snake);if(snakeCurrentRowIdx > 0) {snake->print(snake);return ;}snake->print(snake);snake->go(snake);if (snake->getFood(snake)) {snake->createFood(snake);}}void isKeyPressed(struct Snake *snake) {u8 keyPressed = 0;keyPressed = keyboardMatrixFlipScan();// UPif (keyPressed == 2 && snake->direction != 1) snake->direction = -1;// LEFTelse if (keyPressed == 5 && snake->direction != 2) snake->direction = -2;// DOWNelse if (keyPressed == 6 && snake->direction != -1) snake->direction = 1;// RIGHTelse if (keyPressed == 7 && snake->direction != -2) snake->direction = 2;if (keyPressed == 16) {while (1) {keyPressed = keyboardMatrixFlipScan();snake->print(snake);if (keyPressed == 16) break;}}
}int isSuccess(struct Snake *snake) {if (snake->level >= 10) return 1;return 0;
}void print(struct Snake *snake) {struct Node *p;u8 word[8];u8 i;for(i=0; i<8; i++) {word[i] = 0;}for(i=0; i<snake->level; i++) {p = &nodeList[i];word[p->x] |= (1 << p->y);}p = foodNode;word[p->x] |= (1 << p->y);printLedWord(8, word);
}

实际效果如下图