93 lines
No EOL
2.1 KiB
C++
93 lines
No EOL
2.1 KiB
C++
#pragma once
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#include "InputCodes.hpp"
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#include "Vec.hpp"
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#include "List.hpp"
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#include "Map.hpp"
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#include <mutex>
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namespace tp {
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struct InputEvent {
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enum class Type {
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NONE = 0,
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BUTTON_ACTION,
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MOUSE_DELTA,
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MOUSE_POS,
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} type = Type::NONE;
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enum class ButtonAction {
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NONE = 0,
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PRESS,
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HOLD,
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RELEASE,
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REPEAT,
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} buttonAction = ButtonAction::NONE;
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Vec2F mouseEvent = { 0, 0 };
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};
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class InputState {
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public:
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InputState() = default;
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void handleEvent(const InputEvent& event);
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bool isStateChanged();
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// true if event is no longer needed and false if we need to emulate some transitions further
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bool isHandled();
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public:
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// Transitions from state to state is strict and defined by state order in the enum
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// If posted event conflicts with that automata, we need to emulate intermediate states
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enum State {
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NONE = 0, // Button is inactive
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PRESSED, // Button is pressed
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HOLD, // Button is still pressed
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RELEASED, // Button is released
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};
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State mCurrentState;
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State mPreviousState;
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};
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// Assumes that user and event poster use different threads
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// User can add own states for each input and decide how this state changes on specific events
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// Event posters has no access to any custom state and only report any changes in any way
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class EventHandler {
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public:
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EventHandler();
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~EventHandler();
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public: // Event Poster Interface
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// Record event
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void postEvent(InputID inputID, InputEvent inputEvent);
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public: // User interface
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bool isEvents();
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void processEvent();
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[[nodiscard]] const Vec2F& getPointer() const;
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[[nodiscard]] bool isPressed(InputID id) const;
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[[nodiscard]] bool isReleased(InputID id) const;
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[[nodiscard]] bool isDown(InputID id) const;
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[[nodiscard]] halnf getScrollY() const;
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[[nodiscard]] halnf getPointerPressure() const;
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private:
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std::mutex mMutex = {};
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// Store thread protected queue of posted events
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List<std::pair<InputID, InputEvent>> mEventQueue;
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// input states
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Vec2F mPointer;
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halnf mPointerPressure = 0;
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InputState mInputStates[(int) InputID::LAST_KEY_CODE]{};
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};
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} |