blob: 5da601cb80e0edf728a2d7e12be6c10709531d37 (
plain)
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
|
#include "state_manager.h"
#include "log.h"
namespace Donut
{
void StateManager::shutdown()
{
if (m_current_state)
m_current_state->on_exit();
destroy_states();
DONUT_INFO("StateManager shutdown");
}
void StateManager::destroy_states()
{
m_states.clear();
m_current_state = nullptr;
m_current_state_name = "";
}
void StateManager::register_state(const std::string& state_name, std::unique_ptr<State> state)
{
if (m_states.find(state_name) != m_states.end())
DONUT_WARN("State '{}' already exists, overwriting", state_name);
m_states[state_name] = std::move(state);
DONUT_INFO("Registered state: {}", state_name);
}
void StateManager::switch_to_state(const std::string& state_name)
{
auto it = m_states.find(state_name);
if (it == m_states.end())
{
DONUT_ERROR("Attempted to switch to unknown state: {}", state_name);
return;
}
State* new_state = it->second.get();
if (new_state == m_current_state)
return;
if (m_current_state)
m_current_state->on_exit();
m_current_state = new_state;
m_current_state_name = state_name;
m_current_state->on_enter();
DONUT_INFO("Switched to state: {}", state_name);
}
State* StateManager::get_state(const std::string& state_name)
{
auto it = m_states.find(state_name);
if (it != m_states.end())
return it->second.get();
return nullptr;
}
bool StateManager::has_state(const std::string& state_name) const
{
return m_states.find(state_name) != m_states.end();
}
void StateManager::update(float delta_time)
{
if (m_current_state)
m_current_state->on_update(delta_time);
}
void StateManager::render()
{
if (m_current_state)
m_current_state->on_render();
}
void StateManager::on_event(Event& event)
{
if (m_current_state)
m_current_state->on_event(event);
}
}
|
