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#include "game.h"
#include <thread>
//get_key will return the key user typed
char Game::get_key()
{
int n;
char buf[3];
n = read(0,buf,sizeof(buf));
if(3 == n && buf[0] == 27 && buf[1] == 91)
{
return buf[2];
}
else if(1 == n)
{
return buf[0];
}
return 0;
}
//need to implement end funtion()
int Game::end() //exit game function
{
pen.goto_xy(ROW + 3,1);
system("stty echo icanon"); //restart cache
pen.show_cur();
//need to make cursor goto the bottom
//need to show cursor
exit(0); //exit
}
int Game::getKey() //key control function
{
//TODO
//need to implement this function
int quit = 0;
int flag = 1;
while(!quit){
char key;
key = get_key();
switch(key)
{
case UP:
snake.head.direction = UP;
break;
case DOWN:
snake.head.direction = DOWN;
break;
case RIGHT:
snake.head.direction = RIGHT;
break;
case LEFT:
snake.head.direction = LEFT;
default:
break;
}
}
return 0;
}
//function use to draw a box
void Game::drawBox() //draw the outer range
{
pen.clr_scrn();
pen.draw_box(1,20,ROW,COL,44,34,'#');
}
void Game::drawSnake(void) // draw snake
{
int i;
pen.draw_rect(snake.head.pos.x,snake.head.pos.y + 20,1,1,43,33, 'x');
for(i=0; i<= snake.body.count() - 1; i++){
pen.draw_rect(snake.body.body_[i].x,snake.body.body_[i].y+20,1,1,3,32,'@');
}
}
void Game::snakeMove(void) //move snake
{
int i;
if(snake.head.pos.x<=1 || snake.head.pos.x >= ROW+1 || snake.head.pos.y <=0 || snake.head.pos.y >= COL){
end();
}
//for when the snake hits itself
for(i=0; i<snake.body.count();i++){
if(snake.head.pos.x==snake.body.body_[i].x && snake.head.pos.y==snake.body.body_[i].y){
std::cout<<snake.head.pos.x<<" "<<snake.head.pos.y<<std::endl;
std::cout<<snake.body.body_[i].x<<" "<<snake.body.body_[i].y<<std::endl;
std::cout<<"Don't hit yourself!!!"<<std::endl;
end();
}
}
//for when the snake hits the food
if(snake.head.pos.x==food.pos.x && snake.head.pos.y==food.pos.y){
food.update(snake.body.body_,snake.head.pos.x,snake.head.pos.y);
snake.body.add(0,0);
}
snake.body.move(snake.head.pos.x,snake.head.pos.y);
switch(snake.head.direction){
case UP:
if(fkey!='d'){
snake.head.pos.x -= 1;
fkey='u';
}
else{
snake.head.pos.x += 1;
}
break;
case DOWN:
if(fkey!='u'){
snake.head.pos.x += 1;
fkey='d';
}
else{
snake.head.pos.x -= 1;
}
break;
case RIGHT:
if(fkey!='l'){
snake.head.pos.y += 1;
fkey='r';
}
else{
snake.head.pos.y -= 1;
}
break;
case LEFT:
if(fkey!='r'){
snake.head.pos.y -= 1;
fkey='l';
}
else{
snake.head.pos.y += 1;
}
break;
}
}
void Game::start(){
int quit = 0;
while(!quit)
{
system("stty -echo -icanon"); //cancel cacheļ¼
pen.hide_cur();
pen.clr_scrn();
drawBox();
//need to draw a welcome page
//need to add more feature in the switch below
pen.goto_xy(8,33);
pen.putstr(31,1," Snake");
pen.goto_xy(10,33);
pen.putstr(31,1,"1. New Game");
pen.goto_xy(11,33);
pen.putstr(31,1,"2. Exit");
fflush(stdout); //flush the buffer
int back = 0;
while(!back)
{
int ret;
char key = '0';
int i;
key = get_key(); //get key
switch(key)
{
case 49: // start game,??? is the key you use to start game
gameStart();
std::thread f1([&](){
while(true){
drawBox();
pen.draw_rect(food.pos.x,food.pos.y + 20,1,1,46,36,'#');
snakeMove();
drawSnake();
fflush(stdout);
usleep(200000);
}
});
std::thread f2([&](){
getKey();
});
f1.join();
f2.join();
back = 1; // note for end
break;
}
}
}
end(); // end of game
}
void Game::gameStart(){
snake.head.pos.x = 10; //init the head position
snake.head.pos.y = 20;
snake.body.add(10,19); //init the body position
snake.body.add(10,18);
snake.body.add(10,17);
fkey = 'r'; //direction
snake.head.direction = RIGHT; //head direction
speed=401;
food.update(snake.body.body_,snake.head.pos.x,snake.head.pos.y); //init food position
}
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