62 lines
2.1 KiB
C
62 lines
2.1 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: 2024/12/16 14:08:46 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 "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
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* 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
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* 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;
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t_dpoint direction;
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t_dpoint rayon;
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distance = 0;
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direction.x = cos(angle);
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direction.y = sin(angle);
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rayon.x = 0;
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rayon.y = 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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int shelves_launch(t_info *info)
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{
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displacement_hook(info);
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if (info->redraw)
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(render_frame(info), info->redraw = false);
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return (EXIT_SUCCESS);
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}
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