/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   move.c                                             :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: greg <greg@student.42.fr>                  +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/10/14 15:03:10 by greg              #+#    #+#             */
/*   Updated: 2024/10/14 16:53:56 by greg             ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "algo.h"

static int move_forward(t_ray *ray)
{
	if (worldMap[(int)((ray->posX + ray->dirX * ray->movespeed))][(int)(ray->posY)] != 1)
		ray->posX += ray->dirX * ray->movespeed;
	if (worldMap[(int)(ray->posX)][(int)(ray->posY + ray->dirY * ray->movespeed)] != 1)
		ray->posY += ray->dirY * ray->movespeed;
	return(0);
}

static int move_backward(t_ray *ray)
{
	if (worldMap[(int)(ray->posX - ray->dirX * ray->movespeed)][(int)(ray->posY)] != 1)
		ray->posX -= ray->dirX * ray->movespeed;
	if (worldMap[(int)(ray->posX)][(int)(ray->posY - ray->dirY * ray->movespeed)] != 1)
		ray->posY -= ray->dirY * ray->movespeed;
	return(0);
}

static int move_right(t_ray *ray)
{
	//both camera direction and camera plane must be rotated
	ray->oldDirX = ray->dirX;
	ray->dirX = ray->dirX * cos(ray->rotspeed) - ray->dirY * sin(ray->rotspeed);
	ray->dirY = ray->oldDirX * sin(ray->rotspeed) + ray->dirY * cos(ray->rotspeed);
	ray->oldPlaneX = ray->planeX;
	ray->planeX = ray->planeX * cos(ray->rotspeed) - ray->planeY * sin(ray->rotspeed);
	ray->planeY = ray->oldPlaneX * sin(ray->rotspeed) + ray->planeY * cos(ray->rotspeed);
	return(0);
}

static int move_left(t_ray *ray)
{
	//both camera direction and camera plane must be rotated
	ray->oldDirX = ray->dirX;
	ray->dirX = ray->dirX * cos(-ray->rotspeed) - ray->dirY * sin(-ray->rotspeed);
	ray->dirY = ray->oldDirX * sin(-ray->rotspeed) + ray->dirY * cos(-ray->rotspeed);
	ray->oldPlaneX = ray->planeX;
	ray->planeX = ray->planeX * cos(-ray->rotspeed) - ray->planeY * sin(-ray->rotspeed);
	ray->planeY = ray->oldPlaneX * sin(-ray->rotspeed) + ray->planeY * cos(-ray->rotspeed);
	return(0);
}




int keypress(int keycode, t_ray *ray)
{
	if (keycode == 119)	//move forward if no wall in front of you
	{
		move_forward(ray);
	}
	if (keycode == 115) 	//move backwards if no wall behind you
	{
		move_backward(ray);
	}
	if (keycode == 100)	//rotate to the right
	{
		move_left(ray);
	}
	if (keycode == 97) 	//rotate to the left
	{
		move_right(ray);
	}
	if (keycode == 65307)
	{
		mlx_destroy_window(ray->mlx_ptr, ray->win_ptr);
		exit(0);
	}
	// render the updated frame after key pressd
	render(ray);
	return (0);
}