feat: utility func to get cardinal direction from angle

Makefile

@@ -9,6 +9,7 @@ endif
 IFLAGS = -I./mlx -I./libft
 
 SOURCEFILES = \
+		src/consts.c \
 		src/draw/draw_map.c \
 		src/draw/drawutils.c \
 		src/main.c \

README

@@ -18,9 +18,9 @@ faire un systeme de "cheats" soit par un menu de debug soit par une ligne de com
 --[ Correspondances des angles / points cardinaux
 
                    PI [ nord ]
-                        |
+        5 PI / 4 [NO]   |     3 PI / 4 [NE]
                         |
  3 PI / 2 [ouest] ----------- PI / 2 [est]
-                        |
+                        |     
-                        |
+       7 PI / 4 [SO]    |     PI / 4 [SE]
                     0 [ sud ]

src/consts.c

@@ -0,0 +1,23 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   consts.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: kcolin <kcolin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2025/07/28 14:33:12 by kcolin            #+#    #+#             */
+/*   Updated: 2025/07/28 15:03:16 by kcolin           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "consts.h"
+#include <math.h>
+
+const float	g_north = M_PI;
+const float	g_south = 0;
+const float	g_east = M_PI / 2;
+const float	g_west = 3 * M_PI / 2;
+const float	g_northwest = 5 * M_PI / 4;
+const float	g_northeast = 3 * M_PI / 4;
+const float	g_southwest = 7 * M_PI / 4;
+const float	g_southeast = M_PI / 4;

src/consts.h

@@ -6,7 +6,7 @@
 /*   By: kcolin <kcolin@42.fr>                      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2025/07/17 14:54:36 by kcolin            #+#    #+#             */
-/*   Updated: 2025/07/25 14:53:56 by tchampio         ###   ########.fr       */
+/*   Updated: 2025/07/28 15:03:19 by kcolin           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -15,8 +15,19 @@
 
 # define HEIGHT 800
 # define WIDTH 800
+
 # define SIZE 64
 # define MAP_SIZE 10
+
+extern const float	g_north;
+extern const float	g_south;
+extern const float	g_east;
+extern const float	g_west;
+extern const float	g_northwest;
+extern const float	g_northeast;
+extern const float	g_southwest;
+extern const float	g_southeast;
+
 # define RESSOURCE_DIR "ressources"
 # define MOVEMENT_SPEED 6.4
 # define ROTATION_SPEED 0.1

src/main.c

@@ -17,6 +17,8 @@
 #include "draw/drawutils.h"
 #include "map/map_checker.h"
 #include "draw/draw_map.h"
+#include "map/mapdata.h"
+#include "player/player.h"
 #include "utils/hooks.h"
 #include "utils/frees.h"
 #include <stdbool.h>
@@ -29,8 +31,8 @@
 void	init_player(t_mapdata *mapdata, t_player *player)
 {
 	player->health = 100;
-	player->x = mapdata->startx;
+	player->x = mapdata->startx * SIZE;
-	player->y = mapdata->starty;
+	player->y = mapdata->starty * SIZE;
 	if (mapdata->map[mapdata->starty][mapdata->startx] == 'N')
 		player->yaw = M_PI;
 	else if (mapdata->map[mapdata->starty][mapdata->startx] == 'S')
@@ -53,10 +55,10 @@ bool	touch(float px, float py, t_mapdata *map)
 	return (false);
 }
 
-void draw_line(t_cub3d_data *data, float start_x)
+void draw_line(t_cub3d_data *data, float start_angle)
 {
-	float cos_angle = cos(start_x);
+	float cos_angle = cos(start_angle);
-	float sin_angle = sin(start_x);
+	float sin_angle = sin(start_angle);
 	float ray_x = data->player.x;
 	float ray_y = data->player.y;
 
@@ -68,19 +70,46 @@ void draw_line(t_cub3d_data *data, float start_x)
 	}
 }
 
+t_direction angle_dir(float angle)
+{
+	if (angle >= g_southwest || (angle > g_south && angle < g_southeast))
+		return (SOUTH);
+	if (angle >= g_southeast && angle < g_northeast)
+		return (EAST);
+	if (angle >= g_northeast && angle < g_northwest)
+		return (NORTH);
+	return (WEST);
+}
+
+t_direction	player_dir(t_player player)
+{
+	return (angle_dir(player.yaw));
+}
+
 int	game_loop(t_cub3d_data *data)
 {
 	mlx_destroy_image(data->mlx, data->img_data->img);
 	data->img_data->img = mlx_new_image(data->mlx, WIDTH, HEIGHT);
 
-	int 	column = 0;
+	if (player_dir(data->player) == SOUTH)
-	float	fraction = M_PI / 3 / WIDTH;
+		ft_printf("south\n");
-	float	start_angle = data->player.yaw - M_PI / 6;
+	if (player_dir(data->player) == EAST)
+		ft_printf("east\n");
+	if (player_dir(data->player) == NORTH)
+		ft_printf("north\n");
+	if (player_dir(data->player) == WEST)
+		ft_printf("west\n");
+
+	float ray_angle = data->player.yaw - M_PI / 6;
+	float fraction = M_PI / 3 / WIDTH;
+	int column = 0;
 	while (column < WIDTH)
 	{
-		draw_line(data, start_angle);
+		// hline check
-		start_angle += fraction;
+		/* float ray_atan = atan(ray_angle); */
+		draw_line(data, ray_angle);
 		column++;
+		ray_angle += fraction;
 	}
 
 	draw_map(data->map, &data->player, data->img_data);