cub3d/main.c at master · maaz-codes/cub3d · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   main.c                                             :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: maakhan <maakhan@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/03/04 18:02:12 by rcreer            #+#    #+#             */
/*   Updated: 2025/03/13 17:54:28 by maakhan          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "cub3d.h"

int	rgb_to_int(int *color)
{
	return ((color[0] << 16) | (color[1] << 8) | color[2]);
}

void	cub_spawner(t_cub *cub)
{
	cub->connection = NULL;
	cub->img.img = NULL;
	cub->img.addr = NULL;
	cub->north = NULL;
	cub->south = NULL;
	cub->east = NULL;
	cub->west = NULL;
}

void	cub_init(t_cub *cub, t_parsing **parse)
{
	cub_spawner(cub);
	cub->parse = *parse;
	cub->connection = mlx_init();
	cub->win = mlx_new_window(cub->connection, SCREENWIDTH,
			SCREENHEIGHT, "cub3D");
	cub->img.img = mlx_new_image(cub->connection, SCREENWIDTH,
			SCREENHEIGHT);
	cub->img.addr = mlx_get_data_addr(cub->img.img, &cub->img.bits_per_pixel,
			&cub->img.line_length, &cub->img.endian);
	cub->direc = (*parse)->player;
	cub->map = (*parse)->map;
	init_direction(cub, cub->direc);
	cub->pos_x = (*parse)->x_pos + 0.5;
	cub->pos_y = (*parse)->y_pos + 0.5;
	cub->floor = rgb_to_int((*parse)->rgb[0]);
	cub->ceil = rgb_to_int((*parse)->rgb[1]);
	init_textures(cub, (*parse));
}

int	cub_rendering(t_cub *cub)
{
	int	x;
	int	y;

	x = 0;
	y = 0;
	while (x < SCREENWIDTH)
	{
		perform_ray_casting(x, cub);
		perform_dda(cub, cub->parse);
		if (cub->side == 0)
			cub->perp_wall_dist = (cub->side_dist_x - cub->delta_dist_x);
		else
			cub->perp_wall_dist = (cub->side_dist_y - cub->delta_dist_y);
		get_drawing_coords(cub);
		draw_strip(x, cub->draw_start, cub->draw_end, cub);
		x++;
	}
	mlx_put_image_to_window(cub->connection, cub->win, cub->img.img, 0, 0);
	return (1);
}

int	main(int ac, char **av)
{
	t_cub		*cub;
	t_parsing	*parse;

	if (ac == 2)
	{
		if (!valid_cub_file(av[1]))
			return (EXIT_FAILURE);
		if (!parse_init_save(&parse, av))
			return (free_data(parse), EXIT_FAILURE);
		cub = (t_cub *)malloc(sizeof(t_cub));
		if (!cub)
		{
			free_data(parse);
			exit(error_msg(ERR_MALLOC));
		}
		cub_init(cub, &parse);
		mlx_hook(cub->win, ON_KEY_UP, MASK_KEY_UP, handle_key_event, cub);
		mlx_hook(cub->win, ON_DESTROY, MASK_ON_DESTROY, handle_closing, cub);
		mlx_loop_hook(cub->connection, cub_rendering, cub);
		mlx_loop(cub->connection);
	}
	else
		exit(error_msg(ERR_SYS_ARGS));
}