src/ft_draw_weapons_extra.c


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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_draw_weapons_extra.c                            :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rbousset <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/02/24 20:22:45 by rbousset          #+#    #+#             */
/*   Updated: 2020/03/09 18:56:01 by rbousset         ###   ########lyon.fr   */
/*                                                                            */
/* ************************************************************************** */

#include <cub3d.h>
#include <stdint.h>

static void
	ft_calc_weapon(uint8_t id, t_cub *cl)
{
	t_sprite	sprite;

	sprite = cl->weaps[id][0];
	sprite.spritey = sprite.s_pos_x - (cl->plist.pos_x - 0.5);
	sprite.spritex = sprite.s_pos_y - (cl->plist.pos_y - 0.5);
	sprite.invdet = 1.0 / (cl->plist.plane_x * cl->plist.dir_y
						   - cl->plist.dir_x * cl->plist.plane_y);
	sprite.transformx = sprite.invdet * (cl->plist.dir_y * sprite.spritex
										 - cl->plist.dir_x * sprite.spritey);
	sprite.transformy = sprite.invdet * (-cl->plist.plane_y * sprite.spritex
										 + cl->plist.plane_x * sprite.spritey);
	sprite.spritescreenx = (int)(cl->wlist.x_size / 2) *
		(1 + sprite.transformx / sprite.transformy);
	ft_sprite_h_w(cl, &sprite);
	ft_draw_weapon(cl, &sprite);
}

void
	ft_calc_weaps(t_cub *cl)
{
	ft_calc_weapon(0, cl);
	ft_calc_weapon(1, cl);
}