自己写的贪吃蛇用了SDL图形化界面

#include "SDL/SDL.h" #include "SDL/SDL_image.h" #include "SDL/SDL_ttf.h" #include <string> #include <iostream> #include <time.h> //使用当前时间做种子; using namespace std; enum key{SDL_UP = 0,SDL_DOWN,SDL_LEFT,SDL_RIGHT}; enum number{num1 = 0,num2,num3,num4,num5,num6,num7,num8,num9}; key lip; const int SCREEN_WIDTH = 640; const int SCREEN_HEIGHT = 480; const int SCREEN_BPP = 32; int speed = 100; int num = 0; SDL_Surface* background = NULL; SDL_Surface* message = NULL; SDL_Surface* put = NULL; SDL_Surface* bian = NULL; SDL_Surface* screen = NULL; SDL_Surface* number = NULL; SDL_Surface* start = NULL; SDL_Color textColor = {0,0,0}; SDL_Rect clip[6]; SDL_Event event; TTF_Font* font = NULL; TTF_Font* font2 = NULL; void apply_surface(int x,int y,SDL_Surface *source,SDL_Surface *destination,SDL_Rect*clip = NULL) { SDL_Rect offset; offset.x = x; offset.y = y; SDL_BlitSurface(source,clip,destination,&offset); } SDL_Surface* load_Image(std::string filename) { SDL_Surface* loadedImage; SDL_Surface* optimizedImage; loadedImage = IMG_Load(filename.c_str()); if(loadedImage != NULL) { optimizedImage = SDL_DisplayFormat(loadedImage); SDL_FreeSurface(loadedImage); if(optimizedImage != NULL) { SDL_SetColorKey(optimizedImage,SDL_RLEACCEL|SDL_SRCCOLORKEY,SDL_MapRGB(optimizedImage->format,255,255,255)); } } return optimizedImage; } bool init() { if(SDL_Init(SDL_INIT_AUDIO) == -1) { return false; } screen = SDL_SetVideoMode(SCREEN_WIDTH,SCREEN_HEIGHT,SCREEN_BPP,SDL_SWSURFACE); if(screen == NULL) { return false; } if(TTF_Init() == -1) { return false; } SDL_WM_SetCaption("keyget!",NULL); return true; } bool load_file() { //Load the background image background = load_Image( "background.bmp" ); message = load_Image("snake2.bmp"); bian = load_Image("fost.bmp"); start = load_Image("start.bmp"); //Open the font font = TTF_OpenFont( "simfang.ttf", 40 ); font2 = TTF_OpenFont( "simfang.ttf",30); //If there was a problem in loading the background if( background == NULL ) { return false; } //If there was an error in loading the font if( font == NULL ) { return false; } if(message == NULL) { return false; } //If everything loaded fine return true; } void clean_up() { //Free the surfaces SDL_FreeSurface( background ); SDL_FreeSurface( message ); SDL_FreeSurface(put); SDL_FreeSurface(number); //Close the font that was used TTF_CloseFont( font ); TTF_CloseFont(font2); //Quit SDL_ttf TTF_Quit(); //Quit SDL SDL_Quit(); } void bian_HUA() { for(int i = 0;i < 64;i++) for(int j = 0;j < 48;j++) { apply_surface(i*10,0,bian,screen,&clip[1]); apply_surface(i*10,470,bian,screen,&clip[1]); apply_surface(0,j*10,bian,screen,&clip[1]); apply_surface(490,j*10,bian,screen,&clip[1]); } } void apply_number(int x,int y,int num) { int a[10],n = num; for(int i = 0;i < 10;i++) { if(n != 0) { a[i] = n%10; n/=10; } else a[i] = -1; } for(int i = 9;i>=0;i--) { if(a[i] != -1) { switch(a[i]) { case 0:number = TTF_RenderText_Solid(font2,"0",textColor);break; case 1:number = TTF_RenderText_Solid(font2,"1",textColor);break; case 2:number = TTF_RenderText_Solid(font2,"2",textColor);break; case 3:number = TTF_RenderText_Solid(font2,"3",textColor);break; case 4:number = TTF_RenderText_Solid(font2,"4",textColor);break; case 5:number = TTF_RenderText_Solid(font2,"5",textColor);break; case 6:number = TTF_RenderText_Solid(font2,"6",textColor);break; case 7:number = TTF_RenderText_Solid(font2,"7",textColor);break; case 8:number = TTF_RenderText_Solid(font2,"8",textColor);break; case 9:number = TTF_RenderText_Solid(font2,"9",textColor);break; } apply_surface(x,y,number,screen); x+=10; } } } int* Put_Food(int *f) { srand((unsigned int) time(NULL)); f[0] = 10*(rand()%46+2); f[1] = 10*(rand()%44+2); return f; } class Node { private: public: Node(){} ~Node(){} int x,y; Node* next; Node* previous; Node(int a,int b):x(a),y(b){next = NULL;previous = NULL;} friend class Snake; Node* Get_Next(){return next;} Node* Get_Previous(){return previous;} void Give_Next(){ next->x = x;next -> y = y; } void In_Next(Node* one){next = one;} void In_Previous(Node* one){previous = one;} void Printf_All(){std::cout<<"x = "<<x<<"\ny = "<<y<<std::endl;} }; class Snake { private: Node *head,*tail; int number; public: Snake(){head = NULL,tail = NULL;number = -30;} ~Snake(){} Node* Get_Head(){return head;} Node* Get_Tail(){return tail;} int Get_Number(){return number;} void Add_One(Node* one); void Move(); void Delete(); void Hua(); void Get_Food(int *f); }; void Snake::Get_Food(int *f) { if(head->x == *(f)&&head->y == *(f+1)) { switch(lip) { case SDL_UP:*(f+1) -= 10;break; case SDL_DOWN:*(f+1) += 10;break; case SDL_LEFT:*(f) -= 10;break; case SDL_RIGHT:*(f) += 10;break; } Node *one = new Node(*(f),*(f+1)); Add_One(one); Put_Food(f); if(num == 5 && speed >=10) { speed -= 20; num = 0; } num++; } } void Snake::Hua() { Node *p = head; apply_surface(p->x,p->y,message,screen); p = p->Get_Next(); while(p != NULL) { apply_surface(p->x,p->y,message,screen); p = p->Get_Next(); } } void Snake::Move() { Node *q = tail->Get_Previous(); //cout<<"DDDDDDD\nx = "<<q->x<<"\ny = "<<q->y<<"\nEEEEEEEE"<<endl; do { q->Give_Next(); q = q->Get_Previous(); }while(q != NULL); switch(lip) { case SDL_UP:head->y -= 10;break; case SDL_DOWN:head->y += 10;break; case SDL_LEFT:head->x -= 10;break; case SDL_RIGHT:head->x += 10;break; } q = head->Get_Next(); while(q != NULL) { if(head ->y == q->y&&head->x == q->x) { head -> y = 1000; head -> x = 1000; } q = q->Get_Next(); } } void Snake::Add_One(Node* one) { if(head == NULL) { head = one; tail = one; } else { one->In_Next(Get_Head()); head->In_Previous(one); head = one; } number += 10; } void Snake::Delete() { Node *p = head; Node *q = head; while(p -> Get_Next() != NULL) { p = p->Get_Next(); q = p; delete q; } } void SCORE_LEVEL(Snake* snake) { number = TTF_RenderText_Solid(font2,"SCORE:",textColor); apply_surface(500,200,number,screen); apply_number(580,200,snake->Get_Number());SDL_Delay(speed); number = TTF_RenderText_Solid(font2,"SCORE:",textColor); apply_surface(500,200,number,screen); apply_number(580,200,snake->Get_Number()); number = TTF_RenderText_Solid(font2,"LEVEL:",textColor); apply_surface(500,150,number,screen); apply_number(580,150,((120 - speed)/20)); /*if(num == 5) { apply_surface(500,100,number,screen); }*/ } int Game_Start(); int Game_Play() { Snake snake; Node *one = new Node(100,100); Node *one2 = new Node(100,90); Node *one3 = new Node(100,80); snake.Add_One(one); snake.Add_One(one2); snake.Add_One(one3); bool quit = false; clip[0].x=25; clip[0].y=25; clip[0].w=10; clip[0].h=10; clip[1].x=0; clip[1].y=0; clip[1].w=10; clip[1].h=10; int Food[2] = {100,200}; if(init() == false) { return 1; } int head[2] = {100,100}; if(load_file() == false) { return 1; } SDL_FillRect(screen,&screen->clip_rect,SDL_MapRGB(screen->format,0xFF,0xFF,0xFF)); //message = TTF_RenderText_Solid(font,"Up was pressed.",textColor); apply_surface