#include <stdlib.h>
#include <stdio.h>
#include <graph.h>
#include <time.h>
#include <unistd.h>
#include "fonction.h"

/*Input Serpent*/
void Controle(){
	while(ToucheEnAttente()){
		t = Touche();
		switch(t){	
			case XK_Left : 
				direction=3;
				break;
			case XK_Right:
				direction=4;
				break;
			case XK_Up:
				direction=1;
				break;
			case XK_Down:
				direction=2;
				break;
			case XK_Escape:
				go_on=0;
				break;	
			case XK_p:
				direction=0;
			break;	
		}
	}
}

/*Avancement automatique du serpent en fonction de la direction*/
void Serpent(){		
	if (direction == 1){
		pos_y[0]=old_y[0]-20;
	}
	if (direction == 2){
		pos_y[0]=old_y[0]+20;
	}
	if (direction == 3){
		pos_x[0]=old_x[0]-20;
	}
	if (direction == 4){
		pos_x[0]=old_x[0]+20;
	}

	for(p=0; p<5; p++){
		if(pommex[p]==pos_x[0] && pommey[p]==pos_y[0]){
			segment+=2;
			pommex[p] = ((rand() % (58)+1)*20);
    		pommey[p] = ((rand() % (35)+1)*20);
		}
	}

	Update_Serpent();
	Terrain();
	usleep(100000);
}

/*fonction pour mettre à jour la position du serpent*/
void Update_Serpent(){
	AfficherSprite(fond, pos_x[segment-1], pos_y[segment-1]);
	AfficherSprite(serpent, pos_x[0], pos_y[0]);
	for (i=1 ; i<segment ; i++){
		pos_x[i]=old_x[i-1];
		pos_y[i]=old_y[i-1];
		AfficherSprite(serpent, pos_x[i], pos_y[i]);
	}
	old_x[0]=pos_x[0];
	old_y[0]=pos_y[0];
	for (i=1 ; i<segment ; i++){
		old_x[i]=pos_x[i];
		old_y[i]=pos_y[i];
	}
}

void Collision(){
    if(seconde!=0 || minute!=0){
        for(i=1; i<segment;i++){
            if (pos_x[0]==pos_x[i] && pos_y[0]==pos_y[i]){
                go_on=0;
            }
        }
    }
}