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
|
/*
===========================================================================
Copyright (C) 2025 the OpenMoHAA team
This file is part of OpenMoHAA source code.
OpenMoHAA source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
OpenMoHAA source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenMoHAA source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
#pragma once
#include <functional>
#include "container.h"
template<typename T>
using Delegate = std::function<T>;
struct DelegateHandle {
public:
DelegateHandle();
bool operator==(const DelegateHandle& other) const;
bool operator!=(const DelegateHandle& other) const;
private:
static uint64_t GenerateDelegateID();
static uint64_t currentHandle;
uint64_t handle;
};
template<typename T>
class DelegateMultiElement
{
public:
DelegateMultiElement(Delegate<T>&& inFunction);
template<typename... Args>
void Execute(Args&&...args) const;
DelegateHandle GetHandle() const;
private:
DelegateHandle handle;
Delegate<T> func;
};
template<typename T>
DelegateMultiElement<T>::DelegateMultiElement(Delegate<T>&& inFunction)
: func(inFunction)
{}
template<typename T>
template<typename... Args>
void DelegateMultiElement<T>::Execute(Args&&...args) const
{
func(std::move(args)...);
}
template<typename T>
DelegateHandle DelegateMultiElement<T>::GetHandle() const
{
return handle;
}
template<typename T>
class MulticastDelegate
{
public:
DelegateHandle Add(Delegate<T>&& function);
void Remove(DelegateHandle handle);
template<typename... Args>
void Execute(Args&&...args);
private:
Container<DelegateMultiElement<T>> delegates;
};
template<typename T>
DelegateHandle MulticastDelegate<T>::Add(Delegate<T>&& function)
{
int index = delegates.AddObject(DelegateMultiElement<T>(std::move(function)));
return delegates.ObjectAt(index).GetHandle();
}
template<typename T>
void MulticastDelegate<T>::Remove(DelegateHandle handle)
{
int i;
for (i = delegates.NumObjects(); i > 0; i--) {
const DelegateMultiElement<T>& elem = delegates.ObjectAt(i);
if (elem.GetHandle() == handle) {
delegates.RemoveObjectAt(i);
break;
}
}
}
template<typename T>
template<typename... Args>
void MulticastDelegate<T>::Execute(Args&&...args)
{
size_t i;
for (i = 1; i <= delegates.NumObjects(); i++) {
const DelegateMultiElement<T>& element = delegates.ObjectAt(i);
element.Execute(std::move(args)...);
}
}
|
