food.cpp

#include "food.h"
#include <cstddef>
#include <cstdio>

Food::Food() : last_animation(0),state(0){
	food_bmp = SDL_LoadBMP("./bitmaps/nieb.bmp");
	big_food_bmp = SDL_LoadBMP("./bitmaps/big_nieb.bmp");
	food_now = food_bmp;
}
void Food::set_window_size(int width,int height){
	screen_width = width;
	screen_height = height;
}
void Food::DrawFood(SDL_Surface* screen,double delta){
	last_animation+=delta;
	if (last_animation >=time_between_food_animations){
		last_animation = 0;
		if (state == 0){
			food_now = big_food_bmp;
			state = 1;
		}
		else if (state == 1) {
			food_now = food_bmp;
			state = 0;
		}
	}
	int w,h;
	SDL_Rect dest;
	w = food_now->w;
	h = food_now->h;
	dest.x = x - w / 2;
	dest.y = y - h / 2;
	dest.w = w;
	dest.h = h;
	SDL_BlitSurface(food_now, NULL, screen, &dest);
}

int Food::check_if_eaten(Snake snake){
	if (snake.posx == x && snake.posy == y){
		return 1;
	}
	return 0;
}

int Food::position_food(Snake snake,SDL_Surface* screen){
	int pos_ok = 1;
	int tries = 0;
	int positions_x = screen_width/24;
	int positions_y = screen_height/24;
	int snakex,snakey;
	do{
		tries++;
		pos_ok = 1;
		x = rand()%(positions_x-1);
		y = rand()%(positions_y-2)+1;
		x = x*24 + 12;
		y = y*24 + 36;
		for (int i = 0;i<snake.length;i++){
			snakex = snake.snake_parts[i].x;
			snakey = snake.snake_parts[i].y;
			if (snakex == x && snakey == y) pos_ok = 0;
		}
	}while(!pos_ok && tries <1000);

	if (pos_ok) return 1;

	return 0;
}
void Food::save(FILE* fptr){
	fprintf(fptr,"%d,%d",x,y);
}
int Food::load(FILE* fptr){
	if(fscanf(fptr,"%d,%d",&x,&y)){
		return 1;
	}
	return 0;
}