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#include "state_manager.h"
#include "log.h"
namespace Donut
{
auto StateManager::shutdown() -> void
{
if (m_current_state)
m_current_state->on_exit();
destroy_states();
DONUT_INFO("StateManager shutdown");
}
auto StateManager::destroy_states() -> void
{
m_states.clear();
m_current_state = nullptr;
m_current_state_name = "";
}
auto StateManager::register_state(const std::string& state_name, Scope<State> state) -> void
{
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);
}
auto StateManager::switch_to_state(const std::string& state_name) -> void
{
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);
}
auto StateManager::get_state(const std::string& state_name) -> State*
{
auto it = m_states.find(state_name);
if (it != m_states.end())
return it->second.get();
return nullptr;
}
auto StateManager::has_state(const std::string& state_name) const -> bool
{
return m_states.find(state_name) != m_states.end();
}
auto StateManager::update(float delta_time) -> void
{
if (m_current_state)
m_current_state->on_update(delta_time);
}
auto StateManager::render() -> void
{
if (m_current_state)
m_current_state->on_render();
}
auto StateManager::on_im_ui_render() -> void
{
if (m_current_state)
m_current_state->on_im_ui_render();
}
auto StateManager::on_event(Event& event) -> void
{
if (m_current_state)
m_current_state->on_event(event);
}
}
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