98 lines
3.3 KiB
C
98 lines
3.3 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* rc_utils.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: rparodi <rparodi@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/11/12 12:24:35 by rparodi #+# #+# */
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/* Updated: 2024/11/28 15:15:15 by bgoulard ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "cub3d.h"
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#include "cub3d_struct.h"
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#include "mlx_functions.h"
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#include "raycast.h"
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#include <stdlib.h>
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/**
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* @brief Launches a ray for raycasting to determine the distance to the first wall.
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*
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* This function calculates the distance of a ray cast in a specified angle
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* until it either hits a wall or reaches the maximum range.
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*
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* @param info A pointer to the `t_info` structure containing the map and other relevant data.
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* @param angle The angle of the ray being cast, in radians.
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*
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* @return The distance from the starting position to the first wall hit.
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* If no wall is hit within `MAX_RANGE`,
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the function returns `MAX_RANGE`.
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*/
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double rc_launch(t_info *info, double angle)
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{
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double distance = 0;
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t_dpoint direction = { cos(angle), sin(angle) };
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t_dpoint rayon = { 0, 0 };
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while (distance < MAX_RANGE)
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{
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rayon.x = info->player.pos.x + direction.x * distance;
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rayon.y = info->player.pos.y + direction.y * distance;
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if (info->map.fraw[(int)(rayon.y)][(int)(rayon.x)] == '1')
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return (distance);
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distance += STEP_SIZE;
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}
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return (MAX_RANGE);
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}
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/**
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* @brief Launches algorithm over a specified width with angle adjustments.
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*
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* @param info The structure of the game (for the view)
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* @param spacing The spacing between rays.
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* @param focal The focal length affecting the angle adjustment.
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* @param width The total width (number of columns) to iterate over.
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*
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* @note The function assumes `rc_launch` is defined elsewhere to handle the angle.
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*/
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void draw_line(t_info *info, int x, int start, int end, unsigned int color)
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{
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while (start <= end)
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{
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mlx_pixel_put(info->mlx_ptr, info->win_ptr, x, start, color);
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start++;
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}
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}
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/*
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{
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info->player.pos = (t_dpoint){ 4.5, 4.5 }; // Starting in the middle of the map
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info->player.view = 0; int x;
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double angle;
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double distance;
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double projection_plane = info->map.size.x / (2.0 * tan(M_PI / 6.0));
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for (x = 0; x < info->map.size.x; x++)
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{
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angle = info->player.view + atan((x - info->map.size.x / 2.0) / projection_plane);
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distance = rc_launch(info, angle);
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int line_height = (int)(TILE_SIZE / distance * projection_plane);
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int start = (info->map.size.y / 2) - (line_height / 2);
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int end = (info->map.size.y / 2) + (line_height / 2);
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if (start < 0) start = 0;
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if (end >= info->map.size.y) end = info->map.size.y - 1;
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draw_line(info, x, start, end, 0xFFFFFF);
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}
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}*/
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int shelves_launch(t_info *info)
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{
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render_frame(info);
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return (EXIT_SUCCESS);
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}
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