I have been trying to make a vector class to handle particles in a particle system I am making. The problem I have is when I try to change the dir it does not do what it is supposed to. If I keep pressing up it will just bounce back from between two directions same with down. But if I go up down repeatedly it changes a little bit but not much. I cannot figure out why this is happening.
This is my class
struct sPosition{float x,y;};
class cVector{
float Mag;
sPosition Pos;
sPosition Dir;
public:
cVector(float PosX = 0.0f,float PosY = 0.0f, float Magn = 0.0f, float Degrees = 0.0f){
Pos.x = PosX;
Pos.y = PosY;
SetDirD(Degrees);
Mag = Magn;
}
float GetPosX(){return Pos.x;}
float GetPosY(){return Pos.y;}
float GetDirX(){return Dir.x;}
float GetDirY(){return Dir.y;}
float GetDirR(){return float (atan2(Dir.x,Dir.y * -1.0f));}
float GetMag(){return Mag;}
void SetPos(float PosX,float PosY){Pos.x = PosX; Pos.y = PosY;}
void SetDir(float DirX,float DirY){Dir.x = DirX; Dir.y = DirY;}
void SetDirR(float Rads){
Dir.x = float (cos(Rads));
Dir.y = float (sin(Rads) * -1.0);
}
void SetDirD(float Degs){
Dir.x = float (cos(DegToRad<float>(Degs)));
Dir.y = float (sin(DegToRad<float>(Degs)) * -1.0);
}
void SetMag(float Magn){Mag = Magn;}
};this is my main.cpp just in case it is useful. I am using sfml graphics library btw.
#include <SFML/Graphics.hpp>
#include "Vectors.h"
sf::RenderWindow App(sf::VideoMode(800, 600, 32), "SFML Graphics");
int main(){
cVector VectA(200.0f,300.0f,100.0f,45.0f);
// Create the main rendering window
// Start game loop
while (App.IsOpened())
{
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::Up))
VectA.SetDirR(VectA.GetDirR() + 0.1f);
if ((Event.Type == sf::Event::KeyPressed) && (Event.Key.Code == sf::Key::Down))
VectA.SetDirR(VectA.GetDirR() - 0.1f);
}
// Clear the screen (fill it with black color)
App.Clear();
App.Draw(sf::Shape::Line(VectA.GetPosX(),VectA.GetPosY(),
VectA.GetPosX() + (VectA.GetDirX() * VectA.GetMag()),
VectA.GetPosY() + (VectA.GetDirY() * VectA.GetMag()),
2.0f,sf::Color::Red));
App.Display();
}
return EXIT_SUCCESS;
}