files restructuration

1 files changed, 60 insertions, 0 deletions

diff --git a/src/helper.c b/src/helper.c
new file mode 100644
index 0000000..9940848
--- /dev/null
+++ b/src/helper.c
@@ -0,0 +1,60 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   helper.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/01/11 07:32:20 by cacharle          #+#    #+#             */
+/*   Updated: 2020/01/16 08:57:01 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "cub3d.h"
+
+t_bool	helper_is_player_cell(t_cell cell)
+{
+	return (cell == CELL_LOOK_NORTH || cell == CELL_LOOK_SOUTH ||
+			cell == CELL_LOOK_WEST || cell == CELL_LOOK_EAST);
+}
+
+void	helper_free_splited(char **splited)
+{
+	int	i;
+
+	if (splited == NULL)
+		return ;
+	i = -1;
+	while (splited[++i] != NULL)
+		free(splited[i]);
+	free(splited);
+}
+
+void	helper_rotate_player(t_state *state, double rotation)
+{
+	state->dir = vector_rotate(state->dir, rotation);
+	state->plane = vector_rotate(state->plane, rotation);
+}
+
+/*
+** Initial player direction vector
+** Since the map [0 0] is in the top left corner the north/south direction are slipped.
+** The camera plane has to stay perpendicular to the direction and
+** create a camera with a 66 degree angle (which is a recommended angle for fps)
+*/
+
+void	helper_init_dir_plane(t_state *state, int y, int x)
+{
+	if (state->map[y][x] == CELL_LOOK_NORTH)
+		state->dir.y = -1.0;
+	else if (state->map[y][x] == CELL_LOOK_SOUTH)
+		state->dir.y = 1.0;
+	else if (state->map[y][x] == CELL_LOOK_WEST)
+		state->dir.x = -1.0;
+	else if (state->map[y][x] == CELL_LOOK_EAST)
+		state->dir.x = 1.0;
+	state->plane = vector_rotate(state->dir, M_PI_2);
+	state->plane = vector_scale(state->plane, 1.0 / vector_norm(state->plane));
+	state->plane = vector_scale(state->plane, 0.66);
+	state->plane = vector_apply(state->plane, &fabs);
+}