game/shared/ray_dda.hh


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

#ifndef SHARED_RAY_DDA
#define SHARED_RAY_DDA 1
#pragma once

#include "shared/types.hh"

class Dimension;

class RayDDA final {
public:
    explicit RayDDA(void) = default;
    explicit RayDDA(const Dimension *dimension, const chunk_pos &start_chunk, const glm::fvec3 &start_fpos, const glm::fvec3 &direction);
    explicit RayDDA(const Dimension &dimension, const chunk_pos &start_chunk, const glm::fvec3 &start_fpos, const glm::fvec3 &direction);

    void reset(const Dimension *dimension, const chunk_pos &start_chunk, const glm::fvec3 &start_fpos, const glm::fvec3 &direction);
    void reset(const Dimension &dimension, const chunk_pos &start_chunk, const glm::fvec3 &start_fpos, const glm::fvec3 &direction);

    voxel_id step(void);

public:
    const Dimension *dimension;
    chunk_pos start_chunk;
    glm::fvec3 start_fpos;
    glm::fvec3 direction;

    glm::fvec3 delta_dist;
    glm::fvec3 side_dist;
    voxel_pos vstep;

    double distance;
    voxel_pos vnormal;
    voxel_pos vpos;
};

#endif /* SHARED_RAY_DDA */