Va_cham

#include <SFML/Graphics.hpp>
#include <iostream>
#include<vector>

using namespace sf;

int main()
{
    // Create the main window
    RenderWindow window(VideoMode(800,600) , "Wall");
    window.setFramerateLimit(60);
    //Grid
    float girdSize = 50.f;
    //Creat player
    RectangleShape player(Vector2f(50 , 50));
    player.setFillColor(Color::Green);

    //Creat wall
    RectangleShape wall(Vector2f(girdSize , girdSize));
    wall.setFillColor(Color::Red);
    int red = 1;

    std::vector<RectangleShape> walls;
    //Creat acceleration, drag, maxVelocity, ..
    float acceleration = 2.5f;
    float drag = 0.5f;
    float maxVelocity = 6.f;
    Vector2f currentVelocity( 0 , 0);
    float deltaTime = 0;
    float multi = 15;

    Clock clock;
    //Main loop
    while(window.isOpen()){
        Event event;
        while(window.pollEvent(event)){
            if(event.type == Event::Closed){
                window.close();
            }
        }

        //Update

        //Change color
        if(Keyboard::isKeyPressed(Keyboard::R) && red == 1){
            wall.setFillColor(Color::Cyan);
            red = 0;
        }
        else if(Keyboard::isKeyPressed(Keyboard::R) && red == 0){
            wall.setFillColor(Color::Red);
            red = 1;
        }
        //Restart deltaTime
        deltaTime = clock.restart().asSeconds();

        //Acceleration
        if(Keyboard::isKeyPressed(Keyboard::S)){
            if(currentVelocity.y < maxVelocity){
                currentVelocity.y += acceleration * deltaTime * multi;
            }
        }
        if(Keyboard::isKeyPressed(Keyboard::D)){
            if(currentVelocity.x < maxVelocity){
                currentVelocity.x += acceleration  * deltaTime * multi;
            }
        }
        if(Keyboard::isKeyPressed(Keyboard::A)){
            if(currentVelocity.x > -maxVelocity){
                currentVelocity.x -= acceleration * deltaTime * multi;
            }
        }
        if(Keyboard::isKeyPressed(Keyboard::W)){
            if(currentVelocity.y > -maxVelocity){
                currentVelocity.y -= acceleration  * deltaTime * multi;
            }
        }

        //Drag
        if(currentVelocity.x > 0){
            currentVelocity.x -= drag  * deltaTime * multi;
            if(currentVelocity.x < 0){
                currentVelocity.x = 0 ;
            }
        }
        if(currentVelocity.x < 0){
            currentVelocity.x += drag  * deltaTime * multi;
            if(currentVelocity.x > 0){
                currentVelocity.x = 0 ;
            }
        }
        if(currentVelocity.y > 0){
            currentVelocity.y -= drag  * deltaTime * multi;
            if(currentVelocity.y < 0){
                currentVelocity.y = 0 ;
            }
        }
        if(currentVelocity.y < 0){
            currentVelocity.y += drag  * deltaTime * multi;
            if(currentVelocity.y > 0){
                currentVelocity.y = 0 ;
            }
        }
        //Colision with window
        if(player.getPosition().x < 0 ){
            currentVelocity.x = 0;
            player.setPosition(0 , player.getPosition().y);
        }
        if(player.getPosition().y < 0 ){
            currentVelocity.y = 0;
            player.setPosition(player.getPosition().x , 0);
        }
        if(player.getPosition().x > window.getSize().x - player.getSize().x ){
            currentVelocity.x = 0;
            player.setPosition(window.getSize().x - player.getSize().x, player.getPosition().y  );
        }
        if(player.getPosition().y > window.getSize().y - player.getSize().y ){
            currentVelocity.y = 0;
            player.setPosition(player.getPosition().x, window.getSize().y - player.getSize().y  );
        }
        //Set wall
        Vector2i mousePos = Mouse::getPosition(window);

        if(Mouse::isButtonPressed(Mouse::Right)){
            int check = 1;
            wall.setPosition((int) (mousePos.x / girdSize) * girdSize , (int) (mousePos.y / girdSize) * girdSize);
            //Duyet tu dau den cuoi walls
            for(size_t i = 0 ; i < walls.size() ; i++){
                if((int) (mousePos.x / girdSize) * girdSize == walls[i].getPosition().x
                    && (int) (mousePos.y / girdSize) * girdSize == walls[i].getPosition().y){
                    /*================*/
                    check = 0;
                    break;
                }
            }
            //Push back
            if(check == 1){
                walls.push_back(wall);
            }

        }
        //Erase wall
        if(Mouse::isButtonPressed(Mouse::Left)){
            for(size_t i = 0 ; i < walls.size() ; i++){
                if( (int) (mousePos.x / girdSize) * girdSize == walls[i].getPosition().x
                    && (int) (mousePos.y / girdSize) * girdSize == walls[i].getPosition().y ){
                    /*=================*/
                    walls.erase(walls.begin() + i);
                    break;
                }
            }
        }
        if(Mouse::isButtonPressed(Mouse::Middle)){
            walls.erase(walls.begin() , walls.begin() + walls.size() );
        }
        //Colisions
        for(size_t i = 0 ; i < walls.size() ;i++){
            if(walls[i].getGlobalBounds().intersects(player.getGlobalBounds())){

                //Left colission
                if(player.getGlobalBounds().left < walls[i].getGlobalBounds().left
                   && player.getGlobalBounds().left + player.getGlobalBounds().width < walls[i].getGlobalBounds().left + walls[i].getGlobalBounds().width
                   && player.getGlobalBounds().top < walls[i].getGlobalBounds().top + walls[i].getGlobalBounds().height
                   && player.getGlobalBounds().top + player.getGlobalBounds().height > walls[i].getGlobalBounds().top
                   ){
                    currentVelocity.x *= -0.0 ;
                    player.setPosition(walls[i].getGlobalBounds().left - player.getGlobalBounds().width , player.getGlobalBounds().top);
                    std::cout << "left!" << i << std::endl;
                }
                //Right colission
                else if(player.getGlobalBounds().left > walls[i].getGlobalBounds().left
                   && player.getGlobalBounds().left + player.getGlobalBounds().width > walls[i].getGlobalBounds().left + walls[i].getGlobalBounds().width
                   && player.getGlobalBounds().top < walls[i].getGlobalBounds().top + walls[i].getGlobalBounds().height
                   && player.getGlobalBounds().top + player.getGlobalBounds().height > walls[i].getGlobalBounds().top
                   ){
                    currentVelocity.x *= -0.0;
                    player.setPosition(walls[i].getGlobalBounds().left + walls[i].getGlobalBounds().width , player.getGlobalBounds().top);
                    std::cout << "right!" << i << std::endl;
                }
                //Bottom colission
                else if(player.getGlobalBounds().top > walls[i].getGlobalBounds().top
                   && player.getGlobalBounds().top + player.getGlobalBounds().height > walls[i].getGlobalBounds().top + walls[i].getGlobalBounds().height
                   && player.getGlobalBounds().left < walls[i].getGlobalBounds().left + walls[i].getGlobalBounds().width
                   && player.getGlobalBounds().left + player.getGlobalBounds().width > walls[i].getGlobalBounds().left
                   ){
                    currentVelocity.y *= -0.0;
                    player.setPosition(player.getGlobalBounds().left , walls[i].getGlobalBounds().top + walls[i].getGlobalBounds().height);
                    std::cout << "bottom!" << i<< std::endl;
                }
                //Top colission
                else if(player.getGlobalBounds().top < walls[i].getGlobalBounds().top
                   && player.getGlobalBounds().top + player.getGlobalBounds().height < walls[i].getGlobalBounds().top + walls[i].getGlobalBounds().height
                   && player.getGlobalBounds().left < walls[i].getGlobalBounds().left + walls[i].getGlobalBounds().width
                   && player.getGlobalBounds().left + player.getGlobalBounds().width > walls[i].getGlobalBounds().left
                   ){
                    currentVelocity.y *= 0.0;
                    player.setPosition(player.getGlobalBounds().left , walls[i].getGlobalBounds().top - player.getGlobalBounds().height);
                    std::cout << "top!" << i << std::endl;
                   }
            }
        }
        //Player move
        player.move(currentVelocity);
        //Render
        window.clear();


        for(size_t i = 0 ; i < walls.size() ; i++){
            window.draw(walls[i]);
        }
        window.draw(player);
        window.display();
    }



    return EXIT_SUCCESS;
}