\u73b0\u5728\u5b9e\u73b0\u4e86\u8ba1\u65f6\u5668\u673a\u5236\u548c\u4e8b\u4ef6\u673a\u5236\u3002\u4e0b\u4e00\u6b65\u662f\u600e\u4e48\u53bb\u5b9e\u73b0\u8d2a\u5403\u86c7\u7684\u8d70\u52a8\u3002<\/p>\n
\u73b0\u5728\u5206\u4e3a\u4e24\u4e2a\u6587\u4ef6\uff1asnake.h\u548csnake.c<\/p>\n
\u5982\u4e0b\uff1asnake.h<\/p>\n
\r\n#define NEWEVENT (EventLink)malloc(sizeof(event))\r\n#define MAXSNAKELEN 30 \/* Max length of the snake *\/\r\n#define DEFAULTSNAKECOLOR WHITE \/* The default snake color *\/\r\n#define DEFAULTSPEED 100000 \/* The start speed of the snake *\/\r\n#define DEFAULTSTARTX 100 \/* The start x of the snake *\/\r\n#define DEFAULTSTARTY 100 \/* The start y of the snake *\/\r\n#define MAXEVENT 1 \/* The startup event number *\/\r\n\r\n\/* Keyboard definition *\/\r\n\r\n#define ENTER 13\r\n\r\n\/* The prototype of bool type *\/\r\n\r\ntypedef enum {\r\n true,\r\n false\r\n} bool;\r\n\r\n\/* The prototype of directions *\/\r\n\r\ntypedef enum {\r\n up,\r\n right,\r\n down,\r\n left\r\n} direction;\r\n\r\n\/* The prototype of a point of the snake *\/\r\n\r\ntypedef struct {\r\n int posx;\r\n int posy;\r\n direction dir; \/* The current direction of this point *\/\r\n} point;\r\n\r\n\/* The prototype of the snake *\/\r\n\r\ntypedef struct {\r\n point dots[MAXSNAKELEN];\r\n} snake;\r\n\r\n\r\n\r\n#ifndef __SNAKE\r\n\r\n\r\n\r\n\/* prevent multiple includes *\/\r\n\r\n#define __SNAKE\r\n\r\n\/* The prototype of the event *\/\r\n\r\ntypedef struct {\r\n long interval; \/* The interval of the event occurs *\/\r\n long timer;\r\n void (*invoke)(); \/* The function pointer to the invoke action *\/\r\n\r\n} event;\r\n\r\n\/* The prototype of the eventlist *\/\r\n\r\nstruct eventlist {\r\n event *eventnow;\r\n struct eventlist *next;\r\n\r\n};\r\n\r\ntypedef struct eventlist Node;\r\ntypedef Node *Link;\r\ntypedef event *EventLink;\r\n\r\n\r\nint screenx = 0;\r\nint screeny = 0;\r\n\r\n\r\n\r\nvoid Init(snake *s);\r\nvoid EventHandler(Link);\r\nvoid EventInsert(Link, EventLink);\r\nLink EventCreater(Link);\r\nvoid EventFree(Link);\r\n\r\n\r\n\r\n\/* Registry Events *\/\r\n\r\nvoid Controler(); \/* The main keyboard controler *\/\r\nvoid DrawPoint();\r\nvoid DrawLine();\r\n\r\nvoid DrawSnake(snake *s);\r\nvoid EventInsert(Link eventhead, EventLink newevent) {\r\n\r\n Link pointer;\r\n Link newlist;\r\n pointer = eventhead;\r\n\r\n while (1) {\r\n\r\n if (pointer->next == NULL) {\r\n newlist = (Link) malloc(sizeof (Node));\r\n newlist->eventnow = newevent;\r\n newlist->next = NULL;\r\n pointer->next = newlist;\r\n break;\r\n\r\n }\r\n\r\n pointer = pointer->next;\r\n }\r\n}\r\n\r\nLink EventCreater(Link eventhead) {\r\n\r\n Link newevent;\r\n EventLink tempevent;\r\n int i;\r\n eventhead = (Link) malloc(sizeof (Node));\r\n \/* Create event list *\/\r\n if (eventhead == NULL) {\r\n printf(\"Memory allocate Failure!!\\n\");\r\n\r\n } else {\r\n tempevent = (EventLink) malloc(sizeof (event));\r\n tempevent->interval = 1;\r\n tempevent->timer = 0;\r\n tempevent->invoke = Controler;\r\n eventhead->eventnow = tempevent;\r\n eventhead->next = NULL;\r\n }\r\n return eventhead;\r\n\r\n}\r\n\r\nvoid EventFree(Link eventhead) {\r\n\r\n Link pointer;\r\n EventLink tempevent;\r\n while (eventhead != NULL) {\r\n \r\n pointer = eventhead;\r\n eventhead = eventhead->next;\r\n tempevent = eventhead->eventnow;\r\n free(pointer);\r\n free(tempevent);\r\n }\r\n}\r\n#endif \r\n<\/pre>\nSnake.c<\/p>\n
\r\n#include \r\n#include \r\n#include \r\n#include \r\n#include \r\n#include \r\n#include \r\n\/* To return the head pointer of the eventlist *\/\r\nint main(void) {\r\n\r\n snake me;\r\n Link head;\r\n int gdriver = DETECT, gmode;\r\n EventLink tempevent;\r\n\r\n \/* Init graphic mode *\/\r\n initgraph(&gdriver, &gmode, \"\");\r\n Init(&me);\r\n head = EventCreater(head);\r\n tempevent = NEWEVENT;\r\n tempevent->interval = 10000;\r\n tempevent->timer = 0;\r\n tempevent->invoke = DrawPoint;\r\n EventInsert(head, tempevent);\r\n EventHandler(head);\r\n EventFree(head);\r\n closegraph();\r\n clrscr();\r\n return 0;\r\n}\r\n\r\nvoid DrawLine() {\r\n\r\n int x;\r\n int y;\r\n x = random(500);\r\n y = random(500);\r\n circle(x, y, 20);\r\n}\r\n\r\nvoid DrawPoint() {\r\n\r\n int x1, x2;\r\n int y1, y2;\r\n x1 = random(200);\r\n x2 = random(100);\r\n y1 = random(200);\r\n y2 = random(100);\r\n line(x1, y1, x2, y2);\r\n}\r\n\r\nvoid Controler() {\r\n\r\n}\r\n\r\nvoid Init(snake *s) {\r\n\r\n int i, j;\r\n int sx = DEFAULTSTARTX, sy = DEFAULTSTARTY;\r\n randomize();\r\n for (i = 0; i < MAXSNAKELEN; i++) {\r\n s->dots[i].posx = sx;\r\n s->dots[i].posy = sy;\r\n s->dots[i].dir = up;\r\n sy++;\r\n }\r\n\r\n screenx = getmaxx();\r\n screeny = getmaxy();\r\n}\r\n\r\n\/* Draw snake *\/\r\n\r\nvoid DrawSnake(snake *s) {\r\n\r\n int i;\r\n for (i = 0; i < MAXSNAKELEN; i++) {\r\n putpixel(s->dots[i].posx, s->dots[i].posy, DEFAULTSNAKECOLOR);\r\n }\r\n}\r\n\r\nvoid EventHandler(Link eventhead) {\r\n\r\n int i;\r\n Link pointer;\r\n while (1) {\r\n delay(1);\r\n pointer = eventhead;\r\n while (pointer != NULL) {\r\n pointer->eventnow->timer++;\r\n if ((pointer->eventnow->timer) >= (pointer->eventnow->interval)) {\r\n \/* Invoke current event *\/\r\n pointer->eventnow->invoke();\r\n pointer->eventnow->timer = 0;\r\n }\r\n\r\n pointer = pointer->next;\r\n }\r\n\r\n if (kbhit()) {\r\n if (getch() == ENTER)\r\n break;\r\n }\r\n }\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"\u73b0\u5728\u5b9e\u73b0\u4e86\u8ba1\u65f6\u5668\u673a\u5236\u548c\u4e8b\u4ef6\u673a\u5236\u3002\u4e0b\u4e00\u6b65\u662f\u600e\u4e48\u53bb\u5b9e\u73b0\u8d2a\u5403\u86c7\u7684\u8d70\u52a8\u3002 \u73b0\u5728\u5206\u4e3a\u4e24\u4e2a\u6587\u4ef6\uff1asnake.h\u548csnake […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[8],"class_list":["post-10","post","type-post","status-publish","format-standard","hentry","category-thinking-on-the-keyboard","tag-8"],"_links":{"self":[{"href":"https:\/\/www.hongliangjie.com\/blog\/wp-json\/wp\/v2\/posts\/10","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hongliangjie.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hongliangjie.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hongliangjie.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hongliangjie.com\/blog\/wp-json\/wp\/v2\/comments?post=10"}],"version-history":[{"count":0,"href":"https:\/\/www.hongliangjie.com\/blog\/wp-json\/wp\/v2\/posts\/10\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hongliangjie.com\/blog\/wp-json\/wp\/v2\/media?parent=10"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hongliangjie.com\/blog\/wp-json\/wp\/v2\/categories?post=10"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hongliangjie.com\/blog\/wp-json\/wp\/v2\/tags?post=10"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}