add mouse system for button

sources/System/MenuControllable/MenuControllableMouseSystem.cpp

@@ -0,0 +1,61 @@
+//
+// Created by Louis Auzuret 06/03/21
+//
+
+#include <algorithm>
+#include "Component/Button/ButtonComponent.hpp"
+#include "System/MenuControllable/MenuControllableMouseSystem.hpp"
+#include "Component/Controllable/ControllableComponent.hpp"
+#include "Entity/Entity.hpp"
+#include "Controllers/Mouse.hpp"
+#include "Component/Position/PositionComponent.hpp"
+#include "Drawables/Texture.hpp"
+#include "Drawables/2D/Text.hpp"
+#include "Component/Renderer/Drawable2DComponent.hpp"
+
+namespace RAYControl = RAY::Controller;
+namespace RAY2D = RAY::Drawables::Drawables2D;
+
+namespace BBM
+{
+	MenuControllableMouseSystem::MenuControllableMouseSystem(WAL::Wal &wal)
+		: System(wal), _currentButton()
+	{}
+
+	void MenuControllableMouseSystem::onFixedUpdate(WAL::ViewEntity<ControllableComponent, PositionComponent, Drawable2DComponent> &entity)
+	{
+		auto &positionComponent = entity.get<PositionComponent>();
+		RAY::Vector2 rayMousePos = RAYControl::Mouse::getCursorPosition();
+		Vector2f buttonPos(positionComponent.getX(), positionComponent.getY());
+		Vector2f mousePos(rayMousePos.x, rayMousePos.y);
+		Vector2f dimensions;
+		auto &controllable = entity.get<ControllableComponent>();
+
+		if (this->_currentButton && this->_currentButton->_scene.getID() != this->_wal.getScene()->getID()) {
+			this->_currentButton->getComponent<OnIdleComponent>().onEvent(*this->_currentButton, this->_wal);
+			this->_currentButton = nullptr;
+		}
+		RAY::Texture *texture = dynamic_cast<RAY::Texture *>(entity.get<Drawable2DComponent>().drawable.get());
+		RAY2D::Text *text = dynamic_cast<RAY2D::Text *>(entity.get<Drawable2DComponent>().drawable.get());
+		WAL::Entity *newButton = nullptr; 
+
+		if (texture) {
+			dimensions.x = texture->getDimensions().x;
+			dimensions.y = texture->getDimensions().y;
+		} else if (text) {
+			dimensions.y = text->getFontSize();
+			dimensions.x = text->getString().size() * (text->getLetterSpacing() + text->getFontSize());
+		} else
+			return;
+		if ((buttonPos.x <= mousePos.x && mousePos.x <= buttonPos.x + dimensions.x)
+		&& (buttonPos.y <= mousePos.y && mousePos.y <= buttonPos.y + dimensions.y))
+			newButton = &(*entity);
+		if (newButton) {
+			this->_currentButton->getComponent<OnIdleComponent>().onEvent(*this->_currentButton, this->_wal);
+			this->_currentButton = newButton;
+			this->_currentButton->getComponent<OnHoverComponent>().onEvent(*this->_currentButton, this->_wal);
+			if (RAYControl::Mouse::isPressed(RAYControl::Mouse::Button::MOUSE_BUTTON_LEFT))
+				this->_currentButton->getComponent<OnClickComponent>().onEvent(*this->_currentButton, this->_wal);
+		}
+	}
+}

sources/System/MenuControllable/MenuControllableMouseSystem.hpp

@@ -0,0 +1,36 @@
+//
+// Created by Louis Auzuret on 06/03/21
+//
+
+#pragma once
+
+#include "Component/Controllable/ControllableComponent.hpp"
+#include "Models/Vector2.hpp"
+#include "System/System.hpp"
+#include "Component/Position/PositionComponent.hpp"
+#include "Component/Renderer/Drawable2DComponent.hpp"
+
+namespace BBM
+{
+	//! @brief A system to handle Controllable entities in a menu.
+	class MenuControllableMouseSystem : public WAL::System<ControllableComponent, PositionComponent, Drawable2DComponent>
+	{
+	private:
+		//! @brief index of the current button selected
+		WAL::Entity *_currentButton;
+	public:
+		//! @brief time (in millisecond) since last check
+		std::chrono::time_point<std::chrono::steady_clock> now;
+		//! @inherit
+		void onFixedUpdate(WAL::ViewEntity<ControllableComponent, PositionComponent, Drawable2DComponent> &entities) override;
+
+		//! @brief A default constructor
+		explicit MenuControllableMouseSystem(WAL::Wal &wal);
+		//! @brief A MenuControllable system is not copy constructable
+		MenuControllableMouseSystem(const MenuControllableMouseSystem &) = delete;
+		//! @brief A default destructor
+		~MenuControllableMouseSystem() override = default;
+		//! @brief A MenuControllable system is not assignable.
+		MenuControllableMouseSystem &operator=(const MenuControllableMouseSystem &) = delete;
+	};
+}