set_direction.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   set_direction.c                                    :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kamitsui <kamitsui@student.42tokyo.jp>     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/09/12 16:27:02 by kamitsui          #+#    #+#             */
/*   Updated: 2024/11/16 03:03:59 by kamitsui         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "cub3d.h"
 
static void set_north_direction(
    t_vector *ray_dir, t_vector *camera_forcal_plane)
{
    ray_dir->x = 0;
    ray_dir->y = -1;
    camera_forcal_plane->x = 0.66;
    camera_forcal_plane->y = 0;
}
 
static void set_south_direction(
    t_vector *ray_dir, t_vector *camera_forcal_plane)
{
    ray_dir->x = 0;
    ray_dir->y = 1;
    camera_forcal_plane->x = -0.66;
    camera_forcal_plane->y = 0;
}
 
static void set_west_direction(
    t_vector *ray_dir, t_vector *camera_forcal_plane)
{
    ray_dir->x = -1;
    ray_dir->y = 0;
    camera_forcal_plane->x = 0;
    camera_forcal_plane->y = -0.66;
}
 
static void set_east_direction(
    t_vector *ray_dir, t_vector *camera_forcal_plane)
{
    ray_dir->x = 1;
    ray_dir->y = 0;
    camera_forcal_plane->x = 0;
    camera_forcal_plane->y = 0.66;
}
 
void    set_direction(char direction, t_player *player)
{
    if (direction == 'N')
        set_north_direction(&player->ray_dir, &player->camera_forcal_plane);
    else if (direction == 'S')
        set_south_direction(&player->ray_dir, &player->camera_forcal_plane);
    else if (direction == 'W')
        set_west_direction(&player->ray_dir, &player->camera_forcal_plane);
    else if (direction == 'E')
        set_east_direction(&player->ray_dir, &player->camera_forcal_plane);
}