feat: made 3d... for the cub3d

Makefile

@@ -23,6 +23,9 @@ SOURCEFILES = \
 	    src/player/angle.c \
 		src/player/player.c \
 		src/player/move.c \
+		src/raycast/ray.c \
+		src/raycast/render.c \
+		src/renderer/render.c \
 
 OBJECTS = $(SOURCEFILES:.c=.o)
 NAME = cub3d

src/cub3d_data.h

@@ -6,7 +6,7 @@
 /*   By: kcolin <kcolin@42.fr>                      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/07/17 14:59:37 by kcolin            #+#    #+#             */
-/*   Updated: 2025/07/29 13:43:40 by tchampio         ###   ########.fr       */
+/*   Updated: 2025/07/30 16:07:36 by tchampio         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -17,6 +17,7 @@
 # include "draw/img_data.h"
 # include "player/player.h"
 # include "utils/keypresses.h"
+# include "consts.h"
 
 typedef struct s_cub3d_data
 {
@@ -26,6 +27,7 @@ typedef struct s_cub3d_data
 	t_mapdata		*map;
 	t_player		player;
 	t_keypresses	keypresses;
+	int				screen_matrix[HEIGHT][WIDTH];
 }	t_cub3d_data;
 
 #endif // CUB3D_DATA_H

src/main.c

@@ -6,7 +6,7 @@
 /*   By: kcolin <kcolin@42.fr>                      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/07/17 14:14:30 by kcolin            #+#    #+#             */
-/*   Updated: 2025/07/29 14:00:36 by tchampio         ###   ########.fr       */
+/*   Updated: 2025/07/30 16:21:26 by tchampio         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -21,6 +21,9 @@
 #include "draw/draw_map.h"
 #include "map/mapdata.h"
 #include "player/player.h"
+#include "raycast/raycaster.h"
+#include "renderer/render.h"
+#include "raycast/ray.h"
 #include "utils/hooks.h"
 #include "utils/frees.h"
 #include <stdbool.h>
@@ -103,8 +106,12 @@ float	coord_global_to_local(float coord)
 
 int	game_loop(t_cub3d_data *data)
 {
+	t_ray	ray;
+
 	mlx_destroy_image(data->mlx, data->img_data->img);
 	data->img_data->img = mlx_new_image(data->mlx, WIDTH, HEIGHT);
+	reset_matrix(data);
+	raycaster(data, &ray);
 	move_player(data);
 
 // 	if (player_intercardinal_dir(data->player) == SOUTHEAST)
@@ -137,7 +144,8 @@ int	game_loop(t_cub3d_data *data)
 // 		ray_angle += fraction;
 // 	}
 
-	draw_map(data->map, &data->player, data->img_data);
+	//draw_map(data->map, &data->player, data->img_data);
+	matrix_to_image(data);
 	mlx_put_image_to_window(data->mlx, data->mlx_win,
 		data->img_data->img, 0, 0);
 	mlx_string_put(data->mlx, data->mlx_win, 10, 10, 0x00FFFFFF, COMPILED_TEXT);

src/raycast/ray.c

@@ -6,11 +6,12 @@
 /*   By: tchampio <tchampio@student.42lehavre.fr>   +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/07/30 12:10:17 by tchampio          #+#    #+#             */
-/*   Updated: 2025/07/30 12:36:11 by tchampio         ###   ########.fr       */
+/*   Updated: 2025/07/30 16:06:19 by tchampio         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
 #include "ray.h"
+#include "raycaster.h"
 #include "../player/player.h"
 #include "../consts.h"
 #include "../cub3d_data.h"
@@ -84,7 +85,7 @@ void	calculate_wall_height(t_ray *ray, t_player *player)
 		ray->draw_start = 0;
 	ray->draw_end = ray->wall_height / 2 + HEIGHT / 2;
 	if (ray->draw_end >= HEIGHT)
-		ray->draw_start = HEIGHT - 1;
+		ray->draw_end = HEIGHT - 1;
 	if (ray->side == 0)
 		ray->wall_x = player->y + ray->wall_dist * ray->dir_y;
 	else
@@ -103,5 +104,7 @@ void	raycaster(t_cub3d_data *data, t_ray *ray)
 		ray_calculate_step(ray, &data->player);
 		calculate_wall_dist(ray, data->map->map);
 		calculate_wall_height(ray, &data->player);
+		render_walls(data, ray, x);
+		x++;
 	}
 }

src/raycast/raycaster.h

@@ -0,0 +1,22 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   raycaster.h                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tchampio <tchampio@student.42lehavre.fr>   +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/07/30 15:16:04 by tchampio          #+#    #+#             */
+/*   Updated: 2025/07/30 15:17:02 by tchampio         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef RAYCASTER_H
+# define RAYCASTER_H
+
+# include "ray.h"
+# include "../cub3d_data.h"
+
+void	raycaster(t_cub3d_data *data, t_ray *ray);
+void	render_walls(t_cub3d_data *data, t_ray *ray, int x);
+
+#endif // RAYCASTER_H

src/raycast/render.c

@@ -0,0 +1,67 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   render.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tchampio <tchampio@student.42lehavre.fr>   +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/07/30 12:50:10 by tchampio          #+#    #+#             */
+/*   Updated: 2025/07/30 16:22:42 by tchampio         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "../cub3d_data.h"
+#include "../consts.h"
+#include "ray.h"
+
+int	get_cardinal(t_ray *ray)
+{
+	if (ray->side == 0)
+	{
+		if (ray->dir_x < 0)
+			return (2);
+		else
+			return (3);
+	}
+	else
+	{
+		if (ray->dir_y > 0)
+			return (1);
+		else
+			return (0);
+	}
+
+}
+
+/*
+	*	Dir values are:
+	*	0: North
+	*	1: South
+	*	2: West
+	*	3: East
+*/
+void	render_walls(t_cub3d_data *data, t_ray *ray, int x)
+{
+	int				dir;
+	int				tex_x;
+	unsigned int	color;
+	double			step;
+	double			pos;
+	static int		texture_size = 64; // to be changed in favor of a const
+
+	dir = get_cardinal(ray);
+	tex_x = (int)(ray->wall_x * texture_size);
+	if ((ray->side == 0 && ray->dir_x < 0) || (ray->side == 1 && ray->dir_y > 0))
+		tex_x = texture_size - tex_x - 1;
+	step = 1.0 * texture_size / ray->wall_height;
+	pos = (ray->draw_start - HEIGHT / 2 + ray->wall_height / 2) * step;
+	while (ray->draw_start < ray->draw_end)
+	{
+		pos += step;
+		color = 0x0000ff;
+		(void)dir; // cc complains otherwise
+		(void)pos; // cc complains otherwise
+		data->screen_matrix[ray->draw_start][x] = color;
+		ray->draw_start++;
+	}
+}

src/renderer/render.c

@@ -0,0 +1,54 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   render.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tchampio <tchampio@student.42lehavre.fr>   +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/07/30 14:53:39 by tchampio          #+#    #+#             */
+/*   Updated: 2025/07/30 16:21:18 by tchampio         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "render.h"
+#include "../consts.h"
+#include "../cub3d_data.h"
+#include "../draw/drawutils.h"
+#include "../../libft/includes/libft.h"
+
+void	reset_matrix(t_cub3d_data *data)
+{
+	int	x;
+	int	y;
+
+	y = 0;
+	while (y < HEIGHT)
+	{
+		x = 0;
+		while (x < WIDTH)
+		{
+			data->screen_matrix[y][x] = 0;
+			x++;
+		}
+		y++;
+	}
+}
+
+void	matrix_to_image(t_cub3d_data *data)
+{
+	int	x;
+	int	y;
+
+	y = 0;
+	while (y < HEIGHT)
+	{
+		x = 0;
+		while (x < WIDTH)
+		{
+			if (data->screen_matrix[y][x] > 0)
+				my_mlx_pixel_put(data->img_data, x, y, data->screen_matrix[y][x]);
+			x++;
+		}
+		y++;
+	}
+}

src/renderer/render.h

@@ -0,0 +1,21 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   render.h                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: tchampio <tchampio@student.42lehavre.fr>   +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/07/30 14:52:12 by tchampio          #+#    #+#             */
+/*   Updated: 2025/07/30 16:20:57 by tchampio         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#ifndef RENDER_H
+# define RENDER_H
+
+# include "../cub3d_data.h"
+
+void	reset_matrix(t_cub3d_data *data);
+void	matrix_to_image(t_cub3d_data *data);
+
+#endif // RENDER_H