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
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
#pragma once
#include "local-coords.hpp"
#include "compat/assert.hpp"
#include <Magnum/Magnum.h>
#include <Magnum/Math/Vector2.h>
#include <Magnum/Math/Vector3.h>
namespace floormat {
struct chunk_coords final {
int16_t x = 0, y = 0;
constexpr bool operator==(const chunk_coords& other) const noexcept = default;
constexpr Vector2i operator-(chunk_coords other) const noexcept;
template<typename T>
requires (std::is_floating_point_v<T> || std::is_integral_v<T> && (sizeof(T) > sizeof(x) || std::is_same_v<T, std::decay_t<decltype(x)>>))
explicit constexpr operator Math::Vector2<T>() const noexcept { return Math::Vector2<T>(T(x), T(y)); }
template<typename T>
requires (std::is_floating_point_v<T> || std::is_integral_v<T> && (sizeof(T) > sizeof(x) || std::is_same_v<T, std::decay_t<decltype(x)>>))
explicit constexpr operator Math::Vector3<T>() const noexcept { return Math::Vector3<T>(T(x), T(y), T(0)); }
};
constexpr Vector2i chunk_coords::operator-(chunk_coords other) const noexcept
{
return { Int{x} - other.x, Int{y} - other.y };
}
struct chunk_coords_ final {
int16_t x = 0, y = 0;
int8_t z = 0;
constexpr chunk_coords_() noexcept = default;
constexpr chunk_coords_(int16_t x, int16_t y, int8_t z) noexcept : x{x}, y{y}, z{z} {}
constexpr chunk_coords_(chunk_coords c, int8_t z) noexcept : x{c.x}, y{c.y}, z{z} {}
constexpr bool operator==(const chunk_coords_&) const noexcept = default;
};
constexpr inline int8_t chunk_min_z = -1, chunk_max_z = 14;
struct global_coords final {
using u0 = std::integral_constant<uint32_t, (1<<15)>;
using s0 = std::integral_constant<int32_t, int32_t(u0::value)>;
using z0 = std::integral_constant<int32_t, (1 << 0)>;
using z_mask = std::integral_constant<uint32_t, (1u << 4) - 1u << 20>;
uint32_t x = u0::value<<4|z0::value<<20, y = u0::value<<4;
constexpr global_coords() noexcept = default;
constexpr global_coords(chunk_coords c, local_coords xy, int8_t z) noexcept :
x{
uint32_t((c.x + s0::value) << 4) | (xy.x & 0x0f) |
uint32_t(((int)z + z0::value) & 0x0f) << 20
},
y{ uint32_t((c.y + s0::value) << 4) | (xy.y & 0x0f) }
{}
constexpr global_coords(uint32_t x, uint32_t y, std::nullptr_t) noexcept : x{x}, y{y} {}
constexpr global_coords(int32_t x, int32_t y, int8_t z) noexcept :
x{uint32_t(x + (s0::value<<4)) | uint32_t(((z + z0::value) & 0x0f) << 20)},
y{uint32_t(y + (s0::value<<4))}
{}
constexpr global_coords(chunk_coords_ c, local_coords xy) noexcept :
global_coords{chunk_coords{c.x, c.y}, xy, c.z}
{}
constexpr local_coords local() const noexcept;
constexpr chunk_coords chunk() const noexcept;
constexpr int8_t z() const noexcept;
constexpr Vector2i to_signed() const noexcept;
constexpr Vector3i to_signed3() const noexcept;
constexpr bool operator==(const global_coords& other) const noexcept = default;
constexpr global_coords operator+(Vector2i vec) const noexcept;
constexpr global_coords operator-(Vector2i vec) const noexcept;
constexpr global_coords& operator+=(Vector2i vec) noexcept;
constexpr global_coords& operator-=(Vector2i vec) noexcept;
constexpr Vector2i operator-(global_coords other) const noexcept;
};
constexpr local_coords global_coords::local() const noexcept
{
return { uint8_t(x & 0x0f), uint8_t(y & 0x0f), };
}
constexpr chunk_coords global_coords::chunk() const noexcept
{
return { int16_t(int32_t(((x & ~z_mask::value)>>4) - u0::value)), int16_t(int32_t((y>>4) - u0::value)), };
}
constexpr int8_t global_coords::z() const noexcept
{
return ((x >> 20) & 0x0f) - z0::value;
}
constexpr Vector2i global_coords::to_signed() const noexcept
{
return { int32_t((x & ~z_mask::value) - (s0::value<<4)), int32_t(y - (s0::value<<4)), };
}
constexpr Vector3i global_coords::to_signed3() const noexcept
{
return Vector3i(to_signed(), 0);
}
constexpr global_coords global_coords::operator+(Vector2i vec) const noexcept
{
return { uint32_t((int64_t)x+vec[0]), uint32_t((int64_t)y+vec[1]), nullptr };
}
constexpr global_coords& global_coords::operator+=(Vector2i vec) noexcept
{
x = uint32_t((int64_t)x+vec[0]);
y = uint32_t((int64_t)y+vec[1]);
return *this;
}
constexpr global_coords global_coords::operator-(Vector2i vec) const noexcept
{
return { uint32_t((int64_t)x-vec[0]), uint32_t((int64_t)y-vec[1]), nullptr };
}
constexpr global_coords& global_coords::operator-=(Vector2i vec) noexcept
{
x = uint32_t((int64_t)x-vec[0]);
y = uint32_t((int64_t)y-vec[1]);
return *this;
}
constexpr Vector2i global_coords::operator-(global_coords other) const noexcept
{
return to_signed() - other.to_signed();
}
} // namespace floormat
|
