#include <libft.h>
#include <cub3d.h>
#include <math.h>

static void
ft_detection_init_y(t_cub *cl)
{
	cl->rlist.y_delta_dist = sqrt(1 + (cl->rlist.x_ray_dir *
		cl->rlist.x_ray_dir) / (cl->rlist.y_ray_dir *
		cl->rlist.y_ray_dir));
	if (cl->rlist.y_ray_dir < 0)
	{
		cl->mlist->y_step = -1;
		cl->rlist.y_side_dist = (cl->rlist.y_ray_pos -
			cl->rlist.sqy) * cl->rlist.y_delta_dist;
	}
	else
	{
		cl->mlist->y_step = 1;
		cl->rlist.y_side_dist = (cl->rlist.sqy + 1.0 -
			cl->rlist.y_ray_pos) * cl->rlist.y_delta_dist;
	}
}

static void
ft_detection_init_x(t_cub *cl)
{
	cl->rlist.x_delta_dist = sqrt(1 + (cl->rlist.y_ray_dir *
		cl->rlist.y_ray_dir) / (cl->rlist.x_ray_dir *
		cl->rlist.x_ray_dir));
	if (cl->rlist.x_ray_dir < 0)
	{
		cl->mlist->x_step = -1;
		cl->rlist.x_side_dist = (cl->rlist.x_ray_pos -
			cl->rlist.sqx) * cl->rlist.x_delta_dist;
	}
	else
	{
		cl->mlist->x_step = 1;
		cl->rlist.x_side_dist = (cl->rlist.sqx + 1.0 -
			cl->rlist.x_ray_pos) * cl->rlist.x_delta_dist;
	}
	ft_detection_init_y(cl);
}

void
ft_detect(t_cub *cl)
{
	ft_detection_init_x(cl);
	cl->rlist.hit = 0;	
	while (cl->rlist.hit == 0)
	{
		if (cl->rlist.x_side_dist < cl->rlist.y_side_dist)
		{
			cl->rlist.x_side_dist += cl->rlist.x_delta_dist;
			cl->rlist.sqx += cl->mlist->x_step;
			cl->rlist.side = 0;
		}
		else
		{
			cl->rlist.y_side_dist += cl->rlist.y_delta_dist;
			cl->rlist.sqy += cl->mlist->y_step;
			cl->rlist.side = 1;
		}
		/* ft_printf("sqx [%zu]\t", cl->rlist.sqx); */
		/* ft_printf("sqy [%zu]\n", cl->rlist.sqy); */
		/* (cl->rlist.sqx == 0) ? (cl->rlist.sqx = 1) : 0; */
		/* (cl->rlist.sqy == 0) ? (cl->rlist.sqy = 1) : 0; */
		(cl->rlist.sqx >= cl->mlist->map_h) ? (cl->rlist.sqx = 1) : 0;
		(cl->rlist.sqy >= cl->mlist->map_w) ? (cl->rlist.sqy = 1) : 0;
		if (cl->mlist->map[cl->rlist.sqx][cl->rlist.sqy] == '1')
			cl->rlist.hit = 1;
	}
}