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raycast_bis.c
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raycast_bis.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* raycast_bis.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: jgoudema <jgoudema@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/03/14 16:25:41 by vilibert #+# #+# */
/* Updated: 2024/05/03 20:34:46 by jgoudema ### ########.fr */
/* */
/* ************************************************************************** */
#include "cub3d.h"
void resize_render(t_data *data)
{
static int width = WIDTH;
static int height = HEIGHT;
if (width != data->width || height != data->height)
{
mlx_delete_image(data->mlx, data->img);
data->img = mlx_new_image(data->mlx, data->width, data->height);
if (!data->img)
free_all(ERR_MALLOC, 2, data);
if (mlx_image_to_window(data->mlx, data->img, 0, 0) == -1)
free_all(ERR_MLX, 2, data);
width = data->width;
height = data->height;
}
}
void draw_wall_floor(t_data *data)
{
u_int32_t *buff;
int size_buff;
int i;
i = 0;
size_buff = (data->img->width * data->img->height);
buff = (u_int32_t *)data->img->pixels;
while (i < size_buff / 2)
{
buff[i] = data->map->ceiling_color;
i++;
}
while (i < size_buff)
{
buff[i] = data->map->floor_color;
i++;
}
}
void init_ray_param(t_data *data, t_raycast *rc)
{
double camera_x;
camera_x = 2 * rc->x / (double) data->width - 1;
rc->ray_dir.x = data->player->dir.x + data->player->plane.x * camera_x;
rc->ray_dir.y = data->player->dir.y
+ data->player->plane.y * camera_x;
rc->ipos.x = (int)data->player->pos.x;
rc->ipos.y = (int)data->player->pos.y;
if (rc->ray_dir.x == 0)
rc->delta_dist.x = 1e30;
else
rc->delta_dist.x = fabs(1 / rc->ray_dir.x);
if (rc->ray_dir.y == 0)
rc->delta_dist.y = 1e30;
else
rc->delta_dist.y = fabs(1 / rc->ray_dir.y);
}
void step_init(t_data *data, t_raycast *rc)
{
if (rc->ray_dir.x < 0)
{
rc->step.x = -1;
rc->side_dist.x = (data->player->pos.x - rc->ipos.x) * rc->delta_dist.x;
}
else
{
rc->step.x = 1;
rc->side_dist.x = (rc->ipos.x + 1.0 - data->player->pos.x)
* rc->delta_dist.x;
}
if (rc->ray_dir.y < 0)
{
rc->step.y = -1;
rc->side_dist.y = (data->player->pos.y - rc->ipos.y)
* rc->delta_dist.y;
}
else
{
rc->step.y = 1;
rc->side_dist.y = (rc->ipos.y + 1.0 - data->player->pos.y)
* rc->delta_dist.y;
}
}
void dda(t_data *data, t_raycast *rc)
{
while (1 != 0)
{
if (rc->side_dist.x < rc->side_dist.y)
{
rc->side_dist.x += rc->delta_dist.x;
rc->ipos.x += rc->step.x;
rc->side = 0;
}
else
{
rc->side_dist.y += rc->delta_dist.y;
rc->ipos.y += rc->step.y;
rc->side = 1;
}
if (data->map->map[rc->ipos.y][rc->ipos.x] == '1')
return ;
}
}