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path: root/src/ft_draw_sprite.c
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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_draw_sprite.c                                   :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rbousset <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2020/02/24 20:22:45 by rbousset          #+#    #+#             */
/*   Updated: 2020/02/24 20:22:47 by rbousset         ###   ########lyon.fr   */
/*                                                                            */
/* ************************************************************************** */

#include <libft.h>
#include <cub3d.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

void
	ft_draw_sprite(t_cub *cl, t_sprite *sprite)
{
	int32_t d;
	sprite->x = sprite->drawstartx;
	while (sprite->x < sprite->drawendx)
	{
		sprite->tex_x = (int32_t)((sprite->x - (-sprite->spritewidth / 2 +
		sprite->spritescreenx)) * cl->tlist[4].img_w / sprite->spritewidth);
		sprite->y = sprite->drawstarty;
		if (sprite->transformy > 0 && sprite->x >= 0 &&
		sprite->x < (int32_t)cl->wlist->x_size)
			while (sprite->y < sprite->drawendy)
			{
				d = (sprite->y) * 256 - cl->wlist->y_size * 128 +
				sprite->spriteheight * 128;
				sprite->tex_y = ((d * cl->tlist[4].img_h) /
				sprite->spriteheight) / 256;
				if (*(cl->tlist[4].ptr + sprite->tex_x + sprite->tex_y *
				cl->tlist[4].sizeline / 4))
					*(cl->img.ptr + sprite->x + sprite->y *
					cl->img.sizeline / 4) =
					*(cl->tlist[4].ptr + sprite->tex_x + sprite->tex_y * cl->tlist[4].sizeline / 4);
				sprite->y++;
			}
		sprite->x++;
	}

}