Working velocity :)

Author: kirbysebastian

CMakeLists.txt

@@ -28,6 +28,16 @@ if (BarGraph)
 	)
 endif()
 
+if (Velocity)
+	add_subdirectory(velocity)
+	add_executable(${PROJECT_NAME}
+		${PROD_SOURCES}
+	)
+	target_include_directories(${PROJECT_NAME} PUBLIC
+		${PROD_NAME}
+	)
+endif()
+
 target_link_libraries(${PROJECT_NAME}
 	sfml-graphics
 	sfml-window

randomwalker/randomwalker_controller.cpp

@@ -28,7 +28,7 @@ void RandomWalkerController::startWalking<Randomness::Random>()
 template<>
 void RandomWalkerController::startWalking<Randomness::Custom>()
 {
-	m_walker.setPosition(m_walker.getPosition() + getCustomDirection(0.55, 0.5));
+	m_walker.setPosition(m_walker.getPosition() + getCustomDirection(0.5, 0.5));
 }
 
 sf::Vector2f RandomWalkerController::getRandomDirection() const

utils/utilities.hpp

@@ -1,5 +1,6 @@
 #pragma once
 #include <random>
+#include <cmath>
 
 namespace utils
 {
@@ -30,5 +31,11 @@ namespace utils
 			return 0;
 		return res;
 	}
+
+	template<typename T>
+	T magnitude(const T x, const T y)
+	{
+		return std::sqrt((x * x) + (y * y));
+	}
 }
 

velocity/CMakeLists.txt

@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 3.16)
+
+set(PROD_NAME "bargraph" PARENT_SCOPE)
+file(GLOB_RECURSE SRCS "*.cpp")
+set(PROD_SOURCES ${SRCS} PARENT_SCOPE)

velocity/velocity.cpp

@@ -0,0 +1,76 @@
+#include <iostream>
+#include "SFML/Graphics.hpp"
+
+#define SCREEN_WIDTH 300
+#define SCREEN_HEIGHT 300
+
+int main()
+{
+	std::cout << "Velocity!" << std::endl;
+	sf::RenderWindow window(sf::VideoMode(SCREEN_WIDTH, SCREEN_HEIGHT), "Velocity!");
+
+
+	// Object
+	sf::CircleShape obj{10.f};
+	obj.setFillColor(sf::Color::White);
+	obj.setPosition({SCREEN_WIDTH/2, SCREEN_HEIGHT/2});
+
+	const float displacement{0.0125f};
+	// Velocity
+	sf::Vector2f velocity{displacement, 0};
+	
+	while (window.isOpen())
+	{
+		sf::Event ev;
+		while (window.pollEvent(ev))
+		{
+			if (ev.type == sf::Event::Closed ||
+				(ev.type == sf::Event::KeyPressed &&
+					(ev.key.code == sf::Keyboard::Key::Escape)))
+				window.close();
+			if (ev.type == sf::Event::KeyPressed)
+			{
+				if (ev.key.code == sf::Keyboard::Key::Up)
+					velocity = sf::Vector2f{0, -displacement};
+				if (ev.key.code == sf::Keyboard::Key::Down)
+					velocity = sf::Vector2f{0, displacement};
+				if (ev.key.code == sf::Keyboard::Key::Left)
+					velocity = sf::Vector2f{-displacement, 0};
+				if (ev.key.code == sf::Keyboard::Key::Right)
+					velocity = sf::Vector2f{displacement, 0};
+			}
+		}
+
+		// Apply velocity to object
+		obj.setPosition(obj.getPosition() + velocity);
+
+		// Reset Object position if out of bounds
+		const auto& objPos{obj.getPosition()};
+		if (objPos.x <= 0)
+			obj.setPosition({SCREEN_WIDTH, objPos.y});
+		else if (objPos.x >= SCREEN_WIDTH)
+			obj.setPosition({0, objPos.y});
+		else if (objPos.y <= 0)
+			obj.setPosition({objPos.x, SCREEN_HEIGHT});
+		else if (objPos.y >= SCREEN_HEIGHT)
+			obj.setPosition({objPos.x, 0});
+
+		const auto& mousePos{sf::Mouse::getPosition(window)};
+
+		sf::Vertex line[] = {
+			sf::Vertex{sf::Vector2f{(float)mousePos.x, (float)mousePos.y}, sf::Color::Green},
+			sf::Vertex{
+				sf::Vector2f{
+					obj.getPosition().x+obj.getRadius(),
+					obj.getPosition().y+obj.getRadius()},
+				sf::Color::Red}
+		};
+		
+		window.clear();
+		window.draw(obj);
+		window.draw(line, 2, sf::Lines);
+		window.display();
+	}
+
+	return EXIT_SUCCESS;
+}