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
|
#include "engine.hpp"
#include "util/function.hpp"
#include <chrono>
#include <thread>
#include <utility>
CLIGameEngine::CLIGameEngine(
IGameFactory game_factory,
IComponentRendererFactory component_renderer_factory,
std::shared_ptr<IUserInputObserver> user_input_observer,
std::shared_ptr<ICursorController> cursor_controller,
std::shared_ptr<IScene> scene) noexcept
: _game_factory(std::move(game_factory)),
_component_renderer_factory(std::move(component_renderer_factory)),
_user_input_observer(std::move(user_input_observer)),
_cursor_controller(std::move(cursor_controller)),
_scene(std::move(scene))
{
}
void CLIGameEngine::start() noexcept
{
auto component_renderer = _component_renderer_factory(_cursor_controller);
_scene->enter();
_cursor_controller->set_bounds(_scene->size());
auto game = _game_factory(_scene, _cursor_controller, _user_input_observer);
game->on_start();
std::atexit(normalize_lambda(
[this, &game]()
{
_scene->leave();
game->on_exit();
}));
auto listen_input_thread = std::thread(normalize_lambda(
[this]()
{
_user_input_observer->listen();
}));
auto last_update_time = std::chrono::system_clock::now();
const auto get_millis_since_update = [&last_update_time]()
{
return std::chrono::duration_cast<std::chrono::milliseconds>(
std::chrono::system_clock::now() - last_update_time);
};
while (true)
{
const auto time_since_last_update = get_millis_since_update();
if (time_since_last_update.count() < MIN_TIME_SINCE_LAST_UPDATE_MILLIS)
{
while (get_millis_since_update().count() < MIN_TIME_SINCE_LAST_UPDATE_MILLIS)
{
}
}
game->on_update();
for (auto [component, position] : _scene->get_components())
{
if (component->get_need_render())
{
component_renderer->render(component, position);
component->set_need_render(false);
}
}
last_update_time = std::chrono::system_clock::now();
}
}
|
