Messages

1

Window / Re: moving a Sprite using class (.h file)

« on: November 21, 2012, 08:29:25 pm »

ok, sorry about this

2

Window / Re: moving a Sprite using class (.h file)

« on: November 21, 2012, 06:43:37 pm »

that was just a mistake. as you can see it is really messy. sorry for that.

there aren't any errors, it just that in the window my sprite only moves 7 space (because my moveSpeed=7) in any direction. but the problem i think is in the player.cpp where it resets coordinateX and coordinateY back to 10.

however if i dont use any classes, then my sprite moves perfectly around the window

this is my main.cpp with out any classes.

#include <SFML/Graphics.hpp>

#define sDown 0
#define sLeft 48
#define sUp 144
#define sRight 96

int main()
{
    // Create the main rendering window
    sf::RenderWindow App(sf::VideoMode(800, 600, 32), "Sprite");
       
        sf::Image tempImage;
    if (!tempImage.LoadFromFile("walking2.png"))
        return EXIT_FAILURE;
       
    sf::Sprite playerSprite(tempImage);
       
        float velocityX=0, velocityY=0;
        float x=10,y=10, moveSpeed=7;
        int sourceX=0,sourceY=sDown;
       
    // Start game loop
    while (App.IsOpened())
    {
        // Process events
        sf::Event Event;
        while (App.GetEvent(Event))
        {
            // Close window : exit
            if (Event.Type == sf::Event::Closed)
                App.Close();
                        if ((Event.Type==sf::Event::KeyPressed)&&(Event.Key.Code==sf::Key::Escape))
                                App.Close();
        }
                if (App.GetInput().IsKeyDown(sf::Key::Right)){
                        sourceY=sRight;
                        velocityX=moveSpeed;
                }
                else if (App.GetInput().IsKeyDown(sf::Key::Left)){
                        sourceY=sLeft;
                        velocityX=-moveSpeed;
                }
                else velocityX=0;
               
                if (App.GetInput().IsKeyDown(sf::Key::Down)){
                        sourceY=sDown;
                        velocityY=moveSpeed;
                }
                else if (App.GetInput().IsKeyDown(sf::Key::Up)){
                        sourceY=sUp;
                        velocityY=-moveSpeed;
                }
                else velocityY=0;
               
                x+=velocityX;
                y+=velocityY;
               
                if (velocityX!=0||velocityY!=0)
                        sourceX+=tempImage.GetWidth()/3;
                else  sourceX=0;
                if (sourceX==tempImage.GetWidth()) sourceX=0;
               
                App.Clear();
                playerSprite.SetSubRect(sf::IntRect(sourceX,sourceY,sourceX+tempImage.GetWidth()/3,sourceY+tempImage.GetHeight()/4));
                playerSprite.SetPosition(x,y);
               
               
                                App.SetFramerateLimit(10);
        // Clear screen
        App.Clear(sf::Color(255,255,255));
               
        // Display sprite in our window
        App.Draw(playerSprite);
               
        // Display window contents on screen
        App.Display();
    }
       
    return EXIT_SUCCESS;
}
 

3

Window / moving a Sprite using class (.h file)

« on: November 21, 2012, 05:03:29 pm »

Hi, I can make the sprite character move on the with out any problem with out using any classes or headers, however when ever I try make use of .h files my sprite resets back to the original position. it just wont save the curent location, always resets it to the original coordinates.

i know its really badly written and there some exces staff on it. Please any one help, I pretty sure it is something stupid that i am missing

player.h

#include <SFML/Graphics.hpp>
#include <iostream>
#include "animation.h"

class Player
{
public:
        void loadPlayer();
        void playerMovement(sf::RenderWindow &window);
        void drawPlayer(sf:: RenderWindow &window);
        int inc(sf::RenderWindow &window){
                        c=100;
                        if(window.GetInput().IsKeyDown(sf::Key::C)) {c++;
                                std::cout<<"c:"<<c<<std::endl;}
               
        }
                ~Player(){
                        c--;
                        std::cout<<"c:"<<c<<std::endl;
                }
protected:
        Animation playerAnimation;
        //playerAnimation.isActive();
private:
       
        sf::Image playerImage;
        sf::Sprite playerSprite;
        float VelocityX,velocityY;
        float coordinateX, coordinateY, moveSpeed;
        int sourceX, sourceY;
        static int c;
               
};
 

player.cpp

#include "player.h"

void Player::loadPlayer(){
        if(playerImage.LoadFromFile("player.png")){
                playerSprite.SetImage(playerImage);}
}
int Player::c=0;


void Player::playerMovement(sf::RenderWindow &window){
        int sDown=0;
        int sLeft=48;
        int sUp=144;
        int sRight=96;
        coordinateX=0,coordinateY=0;
        coordinateX=10, coordinateY=10;
        sourceX=0, sourceY=0;
        moveSpeed=7;
       
        if (window.GetInput().IsKeyDown(sf::Key::Right)){
                sourceY=sRight;
                coordinateX+=moveSpeed*window.GetFrameTime();//needs work
        }
        else if (window.GetInput().IsKeyDown(sf::Key::Left)){
                sourceY=sLeft;
                coordinateX=-moveSpeed;
        }
        else coordinateX=0;
       
        if (window.GetInput().IsKeyDown(sf::Key::Down)){
                sourceY=sDown;
                coordinateY=moveSpeed;
        }
        else if (window.GetInput().IsKeyDown(sf::Key::Up)){
                sourceY=sUp;
                coordinateY=-moveSpeed;
        }
        else coordinateY=0;
        playerAnimation.setPosition(1, coordinateX);
        playerAnimation.setPosition(2, coordinateY);
       
        coordinateX+=coordinateX;
        coordinateY+=coordinateY;
       
        if (coordinateX!=0||coordinateY!=0)
                sourceX+=playerImage.GetWidth()/3;
        else  sourceX=0;
        if (sourceX==playerImage.GetWidth()) sourceX=0;
       
        playerSprite.SetSubRect(sf::IntRect(sourceX,sourceY,sourceX+playerImage.GetWidth()/3,sourceY+playerImage.GetHeight()/4));
        playerSprite.SetPosition(coordinateX,coordinateY);
        window.Clear(sf::Color(c,255,255));    
        window.Draw(playerSprite);

        std::cout<<"velocityX:"<<coordinateX<<std::endl;


}

void Player::drawPlayer(sf:: RenderWindow &window){
        window.Draw(playerSprite);
}

 

animation.h

#include <SFML/Graphics.hpp>

class Animation
{
public:
        void setPosition(int axis, float value);
        bool isActive(bool active);
private:
        float coordinateX,coordinateY;
};
 

animation.cpp

#include "animation.h"

bool Animation::isActive(bool active){
        active=true;
}

void Animation::setPosition(int axis, float value){
        if(axis==1)
                value=coordinateX;
        else
                value=coordinateY;
       
        this->coordinateX=coordinateY;
        this->coordinateY=coordinateY;

}
 

main.cpp

int main()
{
    sf::RenderWindow window(sf::VideoMode(640, 480), "SFML Graphics");
       
        Player mainCharecter;
        mainCharecter.loadPlayer();

        int i=1;
        bool active=true;
        /*
        float velocityX=0,velocityY=0;
        float x=10, y=10;
        int sourceX=0, sourceY=0;
        */
    while (active==true)
    {
        sf::Event event;
        while (window.GetEvent(event))
        {
            if (event.Type == sf::Event::Closed||event.Key.Code==sf::Key::Escape)
                active=false;
                }
                mainCharecter.playerMovement(window);

                window.SetFramerateLimit(10);

        window.Display();
    }

    return EXIT_SUCCESS;
}

 

4

Window / Re: changing number of pixels, with SFML/Window.hpp

« on: October 24, 2012, 05:06:09 pm »

I was drawing a line a cross the window, and it was in the range of [-200,200]. i just realised what what was my problem, i was just being stupid, got everything mixed up (gltraslatef(0,0-200) thats why). I am sorry for my stupidity.

5

Window / changing number of pixels, with SFML/Window.hpp

« on: October 24, 2012, 10:13:48 am »

This might be very stupid, but how do you increase the number of pixels on the window. I have noticed that my window has 400x400 pixels (as far as I understand window app( sf::VideoMode(800,600,32)"title") doesn't change it).

and also in my code, every time i press 'R' (restart) it returns me to specific point and no matter how many time i press'R' it goes back to the same point.

#include <math.h>
#include <iostream>
#include <time.h>
#include <cstdio>
#include <SFML/Window.hpp>



void Circle(float radius,float x, float y){
        const float DEG2RAD = 3.14159/180;
        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();
        glTranslatef(x,y,-200);
        glBegin(GL_LINE_LOOP);
        for(int i=0; i<360; i++){
                float degInRad = i*DEG2RAD;
                glVertex2f(cos(degInRad)*radius,sin(degInRad)*radius);
        }
       
        glEnd();
}

bool checkCollision(float Ax, float Ay, float Aw, float Ah, float circleX, float circleY, float r) //Funcfion for checking collision
{
        if ( Ay+Ah < circleY ) return false; //if A is more to the left than B
        else if ( Ay > circleY+r ) return false; //if A is more to the right than B
        else if ( Ax+Aw < circleX ) return false; //if A is higher than B
        else if ( Ax > circleX+r ) return false; //if A is lower than B
       
        return true; //There is a collision because none of above returned false
}


int main()
{
    // Create the main window
    sf::Window App(sf::VideoMode(600,600,12), "bouncing ball");
        float myX=0;
        float myY=-190;
        float width=50;
        float hight=6;
        float circleX=10,circleY=130;
        float circleVelocityX=2; float circleVelocityY =2;
        float radius=5;
        srand(time(NULL));
        float randNumber=rand()%150;
       
        glClearDepth(1);
        glClearColor(1,1,1,0);
        glEnable(GL_DEPTH_TEST);
        glDepthMask(GL_TRUE);
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        gluPerspective(90, 1,1,500);
       
       
    // Start game loop
    while (App.IsOpened())
    {
        // Process events
        sf::Event Event;
        while (App.GetEvent(Event))
        {
            // Close window : exit
            if (Event.Type == sf::Event::Closed)
                App.Close();
                       
            // Escape key : exit
            if ((Event.Type == sf::Event::KeyPressed) && (Event.Key.Code == sf::Key::Escape))
                App.Close();
                       
            // Resize event : adjust viewport
            if (Event.Type == sf::Event::Resized)
                glViewport(0, 0, Event.Size.Width, Event.Size.Height);
                        //moving left and right
                        if((Event.Type==sf::Event::KeyPressed)&&(Event.Key.Code==sf::Key::Left)) myX -=10 ;
                        if((Event.Type==sf::Event::KeyPressed)&&(Event.Key.Code==sf::Key::Right)) myX +=10 ;
                        if((Event.Type==sf::Event::KeyPressed)&&(Event.Key.Code==sf::Key::R)) {
                                circleX=randNumber; circleY=randNumber;
                                circleVelocityX=2;  
                                circleVelocityY =2;
                                radius=5;
                                circleX+=circleVelocityX;
                                circleY+=circleVelocityY;

                        }

        }
               
                //Behavier of the objects
                if(myX<-200) myX=-200;
                else if(myX>200-width)myX=200-width;
               
                circleX+=circleVelocityX;
                circleY+=circleVelocityY;
                if (circleX<-200) circleVelocityX=-circleVelocityX;
                else if(circleX>200)circleVelocityX=-circleVelocityX;
                if(circleY<-200) {
                        circleVelocityX=0;
                        circleVelocityY=0;
                        //Game over message goes here
                       
                }
                else if(circleY>200+radius)circleVelocityY=-circleVelocityY;
               
                if(checkCollision(myX, myY, width, hight, circleX, circleY, radius)){
                        //circleVelocityX=-circleVelocityX;
                        circleVelocityY=-circleVelocityY;
                }
               
        // Set the active window before using OpenGL commands
        // It's useless here because active window is always the same,
        // but don't forget it if you use multiple windows or controls
        App.SetActive();
               
        // Clear color buffer
        glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
               
        // Your drawing here...
                glMatrixMode(GL_MODELVIEW);
                glLoadIdentity();
                glTranslatef(0, 0, -200);
               
                glBegin(GL_QUADS);
                glColor3f(0,0,0);
                glVertex2f(myX,myY);
                glVertex2f(myX+width,myY);
                glVertex2f(myX+width,myY+hight);
                glVertex2f(myX,myY+hight);
                glEnd();
               
                Circle(radius,circleX,circleY);
                App.SetFramerateLimit(60);
        // Finally, display rendered frame on screen
        App.Display();
    }
       
    return EXIT_SUCCESS;
}
 

PS This is my first post and I am very new to openGL and sfml, i apologise in advance if this question has been answered before. and no laughing at my coding i know it is terrible

Thanks