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
|
#include "StarScriptableThread.hpp"
#include "StarLuaRoot.hpp"
#include "StarLuaComponents.hpp"
#include "StarConfigLuaBindings.hpp"
#include "StarTickRateMonitor.hpp"
#include "StarNpc.hpp"
#include "StarRoot.hpp"
#include "StarJsonExtra.hpp"
#include "StarLogging.hpp"
#include "StarAssets.hpp"
namespace Star {
ScriptableThread::ScriptableThread(Json parameters)
: Thread("ScriptableThread: " + parameters.getString("name")), // TODO
m_stop(false),
m_parameters(std::move(parameters)),
m_errorOccurred(false),
m_shouldExpire(true) {
m_luaRoot = make_shared<LuaRoot>();
m_name = m_parameters.getString("name");
m_timestep = 1.0f / m_parameters.getFloat("tickRate",60.0f);
// since thread's not blocking anything important, allow modifying the instruction limit
if (auto instructionLimit = m_parameters.optUInt("instructionLimit"))
m_luaRoot->luaEngine().setInstructionLimit(instructionLimit.value());
m_luaRoot->addCallbacks("thread", makeThreadCallbacks());
m_luaRoot->addCallbacks(
"config", LuaBindings::makeConfigCallbacks(bind(&ScriptableThread::configValue, this, _1, _2)));
for (auto& p : m_parameters.getObject("scripts")) {
auto scriptComponent = make_shared<ScriptComponent>();
scriptComponent->setLuaRoot(m_luaRoot);
scriptComponent->setScripts(jsonToStringList(p.second.toArray()));
m_scriptContexts.set(p.first, scriptComponent);
scriptComponent->init();
}
}
ScriptableThread::~ScriptableThread() {
m_stop = true;
m_scriptContexts.clear();
join();
}
void ScriptableThread::start() {
m_stop = false;
m_errorOccurred = false;
Thread::start();
}
void ScriptableThread::stop() {
m_stop = true;
Thread::join();
}
void ScriptableThread::setPause(bool pause) {
m_pause = pause;
}
bool ScriptableThread::errorOccurred() {
return m_errorOccurred;
}
bool ScriptableThread::shouldExpire() {
return m_shouldExpire;
}
void ScriptableThread::passMessage(Message&& message) {
RecursiveMutexLocker locker(m_messageMutex);
m_messages.append(std::move(message));
}
void ScriptableThread::run() {
try {
double updateMeasureWindow = m_parameters.getDouble("updateMeasureWindow",0.5);
TickRateApproacher tickApproacher(1.0f / m_timestep, updateMeasureWindow);
while (!m_stop && !m_errorOccurred) {
LogMap::set(strf("lua_{}_update", m_name), strf("{:4.2f}Hz", tickApproacher.rate()));
update();
tickApproacher.setTargetTickRate(1.0f / m_timestep);
tickApproacher.tick();
double spareTime = tickApproacher.spareTime();
int64_t spareMilliseconds = floor(spareTime * 1000);
if (spareMilliseconds > 0)
Thread::sleepPrecise(spareMilliseconds);
}
} catch (std::exception const& e) {
Logger::error("ScriptableThread exception caught: {}", outputException(e, true));
m_errorOccurred = true;
}
for (auto& p : m_scriptContexts)
p.second->uninit();
}
Maybe<Json> ScriptableThread::receiveMessage(String const& message, JsonArray const& args) {
Maybe<Json> result;
for (auto& p : m_scriptContexts) {
result = p.second->handleMessage(message, true, args);
if (result)
break;
}
return result;
}
void ScriptableThread::update() {
float dt = m_timestep;
if (dt > 0.0f && !m_pause) {
for (auto& p : m_scriptContexts) {
p.second->update(p.second->updateDt(dt));
}
}
List<Message> messages;
{
RecursiveMutexLocker locker(m_messageMutex);
messages = std::move(m_messages);
}
for (auto& message : messages) {
if (auto resp = receiveMessage(message.message, message.args))
message.promise.fulfill(*resp);
else
message.promise.fail("Message not handled by thread");
}
}
LuaCallbacks ScriptableThread::makeThreadCallbacks() {
LuaCallbacks callbacks;
callbacks.registerCallback("stop", [this]() {
m_stop = true;
});
return callbacks;
}
Json ScriptableThread::configValue(String const& name, Json def) const {
return m_parameters.get(name, std::move(def));
}
}
|