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du7/snake.c
112
du7/snake.c
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#include "snake.h"
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#include <stdlib.h>
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#include <curses.h>
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//void freeAll(struct snake* prvok);
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struct snake* add_snake(struct snake* snake,int x,int y){
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struct snake* head = calloc(1,sizeof(struct snake));
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head->x = x;
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head->y = y;
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head->next = snake;
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return head;
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}
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struct snake* remove_snake(struct snake* snake){
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if(!snake->next&&!snake)
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return NULL;
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struct snake* last = snake;
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struct snake* secondLast = snake;
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while(1){
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if(!last->next){
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free(last);
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secondLast->next=NULL;
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return snake;
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}
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secondLast=last;
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last=last->next;
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}
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}
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void free_snake(struct snake* sn){
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struct snake* this = sn;
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while(this){
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struct snake* next = this->next;
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free(this);
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this = next;
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}
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}
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/*
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void freeAll(struct snake* prvok){
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if(!prvok)
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break;
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else if(prvok->next)
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freeAll(prvok->next);
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free(prvok);
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}*/
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int is_snake(struct snake* snake,int x,int y){
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struct snake* this = snake;
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while(this){
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if(this->x==x && this->y==y)
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return 1;
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this = this->next;
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}
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return 0;
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}
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//Spojkový zoznam =============================> celá hra
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int step_state(struct state* st){
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int nx = (st->snake->x + st->sx);
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int ny = (st->snake->y + st->sy);
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if(is_snake(st->snake,nx, ny))
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return END_SNAKE;
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//
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for(int i = 0;i < FOOD_COUNT; i++){
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if(nx==st->foodx[i]&&ny==st->foody[i]){
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st->foody[i]=-1;
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st->foodx[i]=-1;
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add_snake(st->snake, nx, ny);
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}
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}
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int is_all_eaten=1;
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for(int i = 0;i < FOOD_COUNT; i++){
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if(st->foodx[i]>=0){
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is_all_eaten = 0;
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break;
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}
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}
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if(is_all_eaten)
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return END_FOOD;
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//
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if(nx<0||ny<0||nx>=COLS||ny>=LINES)
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return END_WALL;
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//
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if(st->snake->x != nx && st->snake->y != ny){
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remove_snake(st->snake);
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add_snake(st->snake, nx, ny);
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}
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return END_CONTINUE;
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}
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110
du7/snake/main.c
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110
du7/snake/main.c
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#include "world.h"
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#include <stdlib.h>
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#include <curses.h>
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#include <stdlib.h>
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#include <string.h>
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#include "snake.h"
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// This file contains functions for drawing the the game and changing the state
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// Start is called one in the beginning
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void* init_game(){
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// Allocate memory for the state
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struct state* st = calloc(1,(sizeof(struct state)));
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return st;
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}
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// The first event
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// Initialize game state
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// - borders
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// - snake position
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// - food position
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void init_snake(struct event* world, struct state* st){
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int cy = world->height/2;
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int cx = world->width/2 - 5;
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for (int i = 0; i < 5; i++){
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st->snake = add_snake(st->snake,cx + i ,cy);
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}
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int h = world->height;
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int w = world->width;
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for (int i = 0; i < 5; i++){
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st->foodx[i] = rand() % w;
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st->foody[i] = rand() % h;
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}
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// Initial game vector
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st->sx = 1;
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st->sy = 0;
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}
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// Step is called in a loop once in interval.
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// It should modify the state and draw it.
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int world_event(struct event* w,void* game){
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// Get state pointer
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struct state* st = game;
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if (w->type == EVENT_START){
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// Called on beginning
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init_snake(w,st);
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}
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// Called on key press
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else if (w->type == EVENT_KEY){
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int key = w->key;
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// Modifies vector of snake movement
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if (key == KEY_RIGHT){
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st->sx = 1;
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st->sy = 0;
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}
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else if (key == KEY_LEFT){
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st->sx = -1;
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st->sy = 0;
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}
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else if (key == KEY_DOWN){
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st->sx = 0;
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st->sy = 1;
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}
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else if (key == KEY_UP){
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st->sx = 0;
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st->sy = -1;
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}
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}
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// Called on esc key
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else if (w->type == EVENT_ESC){
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// Non zero means finish the loop and stop the game.
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return 1;
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}
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// Called on interval timeout
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else if (w->type == EVENT_TIMEOUT){
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clear_screen();
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// Copy screen size
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st->width = w->width;
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st->height = w->height;
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// Change game state
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int r = step_state(st);
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char ms[200];
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sprintf(ms,"r %d\n",r);
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set_message(ms,9,9);
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// Draw snake
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struct snake* sn = st->snake;
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while (sn != NULL){
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set_cell('x',sn->x,sn->y);
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sn = sn->next;
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}
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// Draw food
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for (int i = 0 ; i < FOOD_COUNT; i++){
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if (st->foodx[i] >= 0 && st->foody[i] >= 0){
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set_cell('*',st->foodx[i],st->foody[i]);
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}
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}
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// Stop the game
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if (r){
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char message[] = "Koniec";
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set_message(message,10,10);
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}
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}
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return 0;
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}
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int main(int argc, char** argv){
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start_world(init_game,world_event,free);
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return 0;
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}
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