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
|
// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <string>
#include <tuple>
#include <unordered_map>
#include <utility>
#include "common/logging/log.h"
#include "common/param_package.h"
#include "common/vector_math.h"
namespace Input {
/// An abstract class template for an input device (a button, an analog input, etc.).
template <typename StatusType>
class InputDevice {
public:
virtual ~InputDevice() = default;
virtual StatusType GetStatus() const {
return {};
}
};
/// An abstract class template for a factory that can create input devices.
template <typename InputDeviceType>
class Factory {
public:
virtual ~Factory() = default;
virtual std::unique_ptr<InputDeviceType> Create(const Common::ParamPackage&) = 0;
};
namespace Impl {
template <typename InputDeviceType>
using FactoryListType = std::unordered_map<std::string, std::shared_ptr<Factory<InputDeviceType>>>;
template <typename InputDeviceType>
struct FactoryList {
static FactoryListType<InputDeviceType> list;
};
template <typename InputDeviceType>
FactoryListType<InputDeviceType> FactoryList<InputDeviceType>::list;
} // namespace Impl
/**
* Registers an input device factory.
* @tparam InputDeviceType the type of input devices the factory can create
* @param name the name of the factory. Will be used to match the "engine" parameter when creating
* a device
* @param factory the factory object to register
*/
template <typename InputDeviceType>
void RegisterFactory(const std::string& name, std::shared_ptr<Factory<InputDeviceType>> factory) {
auto pair = std::make_pair(name, std::move(factory));
if (!Impl::FactoryList<InputDeviceType>::list.insert(std::move(pair)).second) {
LOG_ERROR(Input, "Factory %s already registered", name.c_str());
}
}
/**
* Unregisters an input device factory.
* @tparam InputDeviceType the type of input devices the factory can create
* @param name the name of the factory to unregister
*/
template <typename InputDeviceType>
void UnregisterFactory(const std::string& name) {
if (Impl::FactoryList<InputDeviceType>::list.erase(name) == 0) {
LOG_ERROR(Input, "Factory %s not registered", name.c_str());
}
}
/**
* Create an input device from given paramters.
* @tparam InputDeviceType the type of input devices to create
* @param params a serialized ParamPackage string contains all parameters for creating the device
*/
template <typename InputDeviceType>
std::unique_ptr<InputDeviceType> CreateDevice(const std::string& params) {
const Common::ParamPackage package(params);
const std::string engine = package.Get("engine", "null");
const auto& factory_list = Impl::FactoryList<InputDeviceType>::list;
const auto pair = factory_list.find(engine);
if (pair == factory_list.end()) {
if (engine != "null") {
LOG_ERROR(Input, "Unknown engine name: %s", engine.c_str());
}
return std::make_unique<InputDeviceType>();
}
return pair->second->Create(package);
}
/**
* A button device is an input device that returns bool as status.
* true for pressed; false for released.
*/
using ButtonDevice = InputDevice<bool>;
/**
* An analog device is an input device that returns a tuple of x and y coordinates as status. The
* coordinates are within the unit circle. x+ is defined as right direction, and y+ is defined as up
* direction
*/
using AnalogDevice = InputDevice<std::tuple<float, float>>;
/**
* A motion device is an input device that returns a tuple of accelerometer state vector and
* gyroscope state vector.
*
* For accelerometer state vector:
* x+ is the same direction as LEFT on D-pad.
* y+ is normal to the touch screen, pointing outward.
* z+ is the same direction as UP on D-pad.
* Units: measured in unit of gravitational acceleration
*
* For gyroscope state vector:
* x+ is the same direction as LEFT on D-pad.
* y+ is normal to the touch screen, pointing outward.
* z+ is the same direction as UP on D-pad.
* Orientation is determined by right-hand rule.
* Units: deg/sec
*/
using MotionDevice = InputDevice<std::tuple<Math::Vec3<float>, Math::Vec3<float>>>;
} // namespace Input
|
