#include "cube3d.h"

// tmp, to draw rays
	static void	calcul_ray_end(t_rcast *rcast, t_vec *ray)
	{
		if (rcast->is_x)
		{
			ray->end.x = rcast->cell_x * rcast->cell;
			if (rcast->ray_sign_x == 1)
				ray->end.x += rcast->cell;
			if (rcast->slope_x)
			{
				rcast->ratio = (double)(ray->end.x - ray->start.x);
				rcast->ratio /= (double)rcast->slope_x;
				ray->end.y = ray->start.y + (double)rcast->slope_y * rcast->ratio;
			}
		}
		else
		{
			ray->end.y = rcast->cell_y * rcast->cell;
			if (rcast->ray_sign_y == 1)
				ray->end.y += rcast->cell;
			if (rcast->slope_y)
			{
				rcast->ratio = (double)(ray->end.y - ray->start.y);
				rcast->ratio /= (double)rcast->slope_y;
				ray->end.x = ray->start.x + (double)rcast->slope_x * rcast->ratio;
			}
		}
	}
// tmp end

void	draw_column(t_game *game, t_rcast *rcast, t_vec *ray)
{
	(void)game;
	(void)rcast;
	(void)ray;
}

void	raycast(t_game *game, t_rcast *rcast)
{
	t_vec	ray;

	rcast->ray_nb = 0;
	while (rcast->ray_nb <= rcast->screen_def)
	{
		ray_intersect(game, rcast, &ray);

		// tmp, to draw the map
			calcul_ray_end(rcast, &ray);
			draw_line(game, ray, 0x00FF00FF);
		// tmp end

		draw_column(game, rcast, &ray);
		(rcast->ray_nb)++;
	}
}