/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   move.c                                             :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mcolonna <mcolonna@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/10/15 12:47:34 by mcolonna          #+#    #+#             */
/*   Updated: 2024/10/17 15:06:43 by mcolonna         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "algo.h"
#include "input.h"

static void	push_from_wall(t_point_int c)
{
	if (map_get_case(&g_map, c.x, c.y)->wall == EMPTY)
		return ;
	if (g_map.player.pos.x < c.x + 1 + HITBOX && g_map.player.pos.x > c.x + 1)
		g_map.player.pos.x = c.x + 1 + HITBOX;
	if (g_map.player.pos.x > c.x - HITBOX && g_map.player.pos.x < c.x)
		g_map.player.pos.x = c.x - HITBOX;
	if (g_map.player.pos.y < c.y + 1 + HITBOX && g_map.player.pos.y > c.y + 1)
		g_map.player.pos.y = c.y + 1 + HITBOX;
	if (g_map.player.pos.y > c.y - HITBOX && g_map.player.pos.y < c.y)
		g_map.player.pos.y = c.y - HITBOX;
}

static void	push_from_walls(void)
{
	t_point_int	c;
	t_point_int	p;

	p.x = g_map.player.pos.x;
	p.y = g_map.player.pos.y;
	c.x = p.x - 1;
	c.y = p.y;
	push_from_wall(c);
	c.x = p.x + 1;
	c.y = p.y;
	push_from_wall(c);
	c.x = p.x;
	c.y = p.y - 1;
	push_from_wall(c);
	c.x = p.x;
	c.y = p.y + 1;
	push_from_wall(c);
}

static int	move_forward(int factor)
{
	t_point_double	dir;

	vector_from_rotation(&dir, g_map.player.rot, 1);
	g_map.player.pos.x += dir.x * MOVE_SPEED * factor;
	g_map.player.pos.y += dir.y * MOVE_SPEED * factor;
	push_from_walls();
	return (0);
}

static int	rotate(int factor)
{
	g_map.player.rot += PI / ROT_SPEED_DIVIDE_PI * factor;
	return (0);
}

// TODO leaks when quit?

void	move(void)
{
	if (g_input_actions.up && !g_input_actions.down)
		move_forward(+1);
	if (g_input_actions.down && !g_input_actions.up)
		move_forward(-1);
	if (g_input_actions.right && !g_input_actions.left)
		rotate(+1);
	if (g_input_actions.left && !g_input_actions.right)
		rotate(-1);
}