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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
#include "world.hpp"
#include "chunk.hpp"
#include "object.hpp"
#include "compat/int-hash.hpp"
#include "compat/exception.hpp"
using namespace floormat;
size_t std::hash<chunk_coords_>::operator()(const chunk_coords_& coord) const noexcept
{
std::size_t x = 0;
x |= size_t(uint16_t(coord.y)) << 16;
x |= size_t(uint16_t(coord.x));
if constexpr(sizeof(size_t) > 4)
x |= size_t(uint8_t(coord.z- chunk_z_min) & 0xf) << 32;
else
x ^= size_t(uint8_t(coord.z- chunk_z_min) & 0xf) * size_t(1664525);
if constexpr(sizeof(size_t) > 4)
return int_hash(uint64_t(x));
else
return int_hash(uint32_t(x));
}
namespace floormat {
world::world(world&& w) noexcept = default;
world::world(std::unordered_map<chunk_coords_, chunk>&& chunks) :
world{std::max(initial_capacity, size_t(1/max_load_factor * 2 * chunks.size()))}
{
for (auto&& [coord, c] : chunks)
operator[](coord) = std::move(c);
}
world& world::operator=(world&& w) noexcept
{
if (&w != this) [[likely]]
{
fm_assert(!w._teardown);
fm_assert(!_teardown);
_last_collection = w._last_collection;
_collect_every = w._collect_every;
_unique_id = std::move(w._unique_id);
fm_assert(_unique_id);
fm_debug_assert(w._unique_id == nullptr);
_last_chunk = {};
_chunks = std::move(w._chunks);
_objects = std::move(w._objects);
_object_counter = w._object_counter;
_current_frame = w._current_frame;
w._object_counter = 0;
for (auto& [id, c] : _chunks)
c._world = this;
}
return *this;
}
world::world() : world{initial_capacity}
{
}
world::~world() noexcept
{
_teardown = true;
for (auto& [k, v] : _chunks)
{
v._teardown = true;
v.mark_scenery_modified();
v.mark_passability_modified();
_last_chunk = {};
v._objects.clear();
}
_last_chunk = {};
_chunks.clear();
_objects.clear();
}
world::world(size_t capacity) : _chunks{capacity}
{
_chunks.max_load_factor(max_load_factor);
_chunks.reserve(initial_capacity);
_objects.max_load_factor(max_load_factor);
_objects.reserve(initial_capacity);
}
chunk& world::operator[](chunk_coords_ coord) noexcept
{
fm_debug_assert(coord.z >= chunk_z_min && coord.z <= chunk_z_max);
auto& [c, coord2] = _last_chunk;
if (coord != coord2)
c = &_chunks.try_emplace(coord, *this, coord).first->second;
coord2 = coord;
return *c;
}
auto world::operator[](global_coords pt) noexcept -> pair
{
auto& c = operator[]({pt.chunk(), pt.z()});
return { c, c[pt.local()] };
}
chunk* world::at(chunk_coords_ c) noexcept
{
auto it = _chunks.find(c);
if (it != _chunks.end())
return &it->second;
else
return nullptr;
}
bool world::contains(chunk_coords_ c) const noexcept
{
return _chunks.find(c) != _chunks.cend();
}
void world::clear()
{
fm_assert(!_teardown);
_last_collection = 0;
_chunks.clear();
_chunks.rehash(initial_capacity);
_objects.clear();
_objects.rehash(initial_capacity);
_collect_every = initial_collect_every;
_object_counter = object_counter_init;
auto& [c, pos] = _last_chunk;
c = nullptr;
pos = chunk_tuple::invalid_coords;
}
void world::maybe_collect()
{
if (_chunks.size() > _last_collection + _collect_every)
collect();
}
void world::collect(bool force)
{
const auto len0 = _chunks.size();
for (auto it = _chunks.begin(); it != _chunks.end(); (void)0)
{
const auto& [_, c] = *it;
if (c.empty(force))
it = _chunks.erase(it);
else
++it;
}
_last_collection = _chunks.size();
auto& [c, pos] = _last_chunk;
c = nullptr;
pos = chunk_tuple::invalid_coords;
const auto len = len0 - _chunks.size();
if (len)
fm_debug("world: collected %zu/%zu chunks", len, len0);
}
void world::do_make_object(const std::shared_ptr<object>& e, global_coords pos, bool sorted)
{
fm_assert(e->id > 0);
fm_debug_assert(_unique_id && e->c->world()._unique_id == _unique_id);
fm_assert(!_objects.contains(e->id));
fm_assert(e->type() != object_type::none);
const_cast<global_coords&>(e->coord) = pos;
_objects[e->id] = e;
if (sorted)
e->c->add_object(e);
else
e->c->add_object_unsorted(e);
}
void world::do_kill_object(object_id id)
{
fm_debug_assert(id > 0);
auto cnt = _objects.erase(id);
fm_debug_assert(cnt > 0);
}
std::shared_ptr<object> world::find_object_(object_id id)
{
auto it = _objects.find(id);
auto ret = it == _objects.end() ? nullptr : it->second.lock();
fm_debug_assert(!ret || &ret->c->world() == this);
return ret;
}
void world::set_object_counter(object_id value)
{
fm_assert(value >= _object_counter);
_object_counter = value;
}
void world::throw_on_wrong_object_type(object_id id, object_type actual, object_type expected)
{
fm_throw("object '{}' has wrong object type '{}', should be '{}'"_cf, id, (size_t)actual, (size_t)expected);
}
auto world::neighbors(floormat::chunk_coords_ coord) -> std::array<neighbor_pair, 8>
{
std::array<neighbor_pair, 8> ret;
for (auto i = 0uz; const auto& x : neighbor_offsets)
{
auto ch = coord + x;
ret[i++] = { at(ch), ch };
}
return ret;
}
} // namespace floormat
|
