#include <SFML/Graphics.hpp> #include <SFML/Audio.hpp> #include <iostream> #define SCREEN_HEIGHT 800 #define SCREEN_WIDTH 600 int main(){ //Creating the window sf::RenderWindow window(sf::VideoMode(SCREEN_WIDTH,SCREEN_HEIGHT), "Awesome Game"); window.setFramerateLimit(60); //Set the frame limit to 60 FPS window.setKeyRepeatEnabled(false); bool play = true; //Variable that keeps the game loop running sf::Event event; //Font sf::Font font; if(font.loadFromFile("Data/BRITANIC.ttf") == 0){ return 1; } //States bool rButton = false; bool leftButton = false; bool rightButton = false; bool upButton = false; bool downButton = false; //Variables int rectRotation = 0; int xVelocity = 0; int yVelocity = 0; //Shapes sf::RectangleShape shape1; shape1.setSize(sf::Vector2f(50,50)); shape1.setPosition(300,300); //Game loop while(play==true){ //EVENTS while(window.pollEvent(event)){ if (event.type == sf::Event::Closed ){ play = false; } if(event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::R){ rButton = true; } if(event.type == sf::Event::KeyReleased&& event.key.code == sf::Keyboard::R){ rButton = false; } if(event.type = sf::Event::KeyPressed){ if(event.key.code == sf::Keyboard::Right) rightButton = true; if(event.key.code == sf::Keyboard::Left) leftButton = true; if(event.key.code == sf::Keyboard::Up) upButton = true; if(event.key.code == sf::Keyboard::Down) downButton = true; } if(event.type = sf::Event::KeyReleased){ if(event.key.code == sf::Keyboard::Right) rightButton = false; if(event.key.code == sf::Keyboard::Left) leftButton = false; if(event.key.code == sf::Keyboard::Up) upButton = false; if(event.key.code == sf::Keyboard::Down) downButton = false; } } //LOGIC if(rButton == true){ rectRotation++; shape1.setRotation(rectRotation); } //Movement //x axis if(rightButton == true){ xVelocity = 5; } if(leftButton == true){ xVelocity = -5; } if(leftButton == true && rightButton == true){ xVelocity = 0; } if(leftButton == false && rightButton == false){ xVelocity = 0; } //y axis if(downButton == true){ yVelocity = 5; } if(upButton == true){ yVelocity = -5; } if(upButton == true && downButton == true){ yVelocity = 0; } if(leftButton == false && rightButton == false){ yVelocity = 0; } //Move shape1.move(xVelocity,yVelocity); //RENDERING window.clear(); window.draw(shape1); window.display(); } //Clean up window.close(); return 0; }
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OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.
#include <iostream>
#include <string>
using namespace std;
int main()
{
string name;
cout << "Enter name:";
getline (cin, name);
cout << "Hello " << name;
return 0;
}
C++ is a widely used middle-level programming language.
When ever you want to perform a set of operations based on a condition If-Else is used.
if(conditional-expression) {
//code
}
else {
//code
}
You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.
Switch is an alternative to If-Else-If ladder.
switch(conditional-expression){
case value1:
// code
break; // optional
case value2:
// code
break; // optional
......
default:
code to be executed when all the above cases are not matched;
}
For loop is used to iterate a set of statements based on a condition.
for(Initialization; Condition; Increment/decrement){
//code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while (condition) {
// code
}
Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.
do {
// code
} while (condition);
Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.
return_type function_name(parameters);
function_name (parameters)
return_type function_name(parameters) {
// code
}