/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_draw_ammo_back.c                                :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: joelecle <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/02/22 20:02:47 by joelecle          #+#    #+#             */
/*   Updated: 2020/02/22 20:02:48 by joelecle         ###   ########lyon.fr   */
/*                                                                            */
/* ************************************************************************** */

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

static void
	ft_draw_back(uint16_t y, uint16_t x, t_cub *cl)
{
	const uint16_t	scl = cl->mlist.scale;

	cl->img.ptr[x * 4 +
		(cl->img.sizeline * (y + cl->wlist.y_size -
		(2 * ((cl->mlist.map_h * scl)) + 20)))] =
		(uint8_t)cl->tlist[16].ptr[cl->tlist[16].tex_x_alt * 4 + 4 *
		cl->tlist[16].img_w * cl->tlist[16].tex_y_alt];
	cl->img.ptr[x * 4 +
		(cl->img.sizeline * (y + cl->wlist.y_size -
		(2 * ((cl->mlist.map_h * scl)) + 20))) + 1] =
		(uint8_t)cl->tlist[16].ptr[cl->tlist[16].tex_x_alt * 4 + 4 *
		cl->tlist[16].img_w * cl->tlist[16].tex_y_alt + 1];
	cl->img.ptr[x * 4 +
		(cl->img.sizeline * (y + cl->wlist.y_size -
		(2 * ((cl->mlist.map_h * scl)) + 20))) + 2] =
		(uint8_t)cl->tlist[16].ptr[cl->tlist[16].tex_x_alt * 4 + 4 *
		cl->tlist[16].img_w * cl->tlist[16].tex_y_alt + 2];
}

static void
	ft_put_ammo_back(t_cub *cl)
{
	int32_t	x_ratio;
	int32_t	y_ratio;
	int16_t	x;
	int16_t	y;

	x_ratio = (int)(((cl->tlist[16].img_w) << 16) / cl->amm_back_w) + 1;
	y_ratio = (int)(((cl->tlist[16].img_h) << 16) / cl->amm_back_h) + 1;
	y = 0;
	while (y < cl->amm_back_h)
	{
		cl->tlist[16].tex_y_alt = ((y * y_ratio) >> 16);
		x = 0;
		while (x < cl->amm_back_w)
		{
			cl->tlist[16].tex_x_alt = ((x * x_ratio) >> 16);
			ft_draw_back(y, x, cl);
			x++;
		}
		y++;
	}
}

static void
	ft_get_hw(t_cub *cl)
{
	uint16_t		x;
	uint16_t		y;
	const uint16_t	scl = cl->mlist.scale;

	x = 0;
	y = cl->wlist.y_size - (2 * ((cl->mlist.map_h * scl)) + 20);
	while (x < (cl->mlist.map_w * scl) + 20)
	{
		while (y < cl->wlist.y_size - (cl->mlist.map_h * scl) - 20)
			y++;
		x++;
	}
	y -= cl->wlist.y_size - (2 * ((cl->mlist.map_h * scl)) + 20);
	y = (y <= 0) ? (1) : (y);
	x = (x <= 0) ? (1) : (x);
	cl->amm_back_h = y;
	cl->amm_back_w = x;
}

void
	ft_draw_ammo_back(t_cub *cl)
{
	ft_get_hw(cl);
	ft_put_ammo_back(cl);
}