SFML Bullets Programming.

[DarkSpirit05er]

I have no luck whatsoever.

Projectile.h
[cpp]
#pragma once
#include <SFML/Graphics.hpp>

class Projectile
{
public:
sf::Image BulletImage;
sf::Sprite Bullet;

public:
~Projectile(void);

void SetDirection(sf::Sprite);

void SetSpeed(float);

void Think(float);

};
[/cpp]

Projectile.cpp
[cpp]
#include "Projectile.h"
#include <SFML/Graphics.hpp>

Projectile::~Projectile(void)
{
}

Projectile::SetDirection(sf::Sprite Reference)
{
float TargetRotation = Reference.GetRotation();
Bullet.SetRotation(static_cast<float>(fmod(TargetRotation, 360)));
float BulletRotation = Bullet.GetRotation();
if (BulletRotation < 0)
Bullet.SetRotation(BulletRotation + 360.f);
}

Projectile::SetSpeed(float SpeedMultiplier)
{
float BulletX = Bullet.GetPosition().x;
float BulletY = Bullet.GetPosition().y;

Bullet.SetX(BulletX * SpeedMultiplier);
Bullet.SetY(BulletY * SpeedMultiplier);
}
[/cpp]

1>c:\users\darkspirit\documents\visual studio 2008\projects\zombie\zombie\projectile.cpp(11) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>c:\users\darkspirit\documents\visual studio 2008\projects\zombie\zombie\projectile.cpp(11) : error C2556: 'int Projectile::SetDirection(sf::Sprite)' : overloaded function differs only by return type from 'void Projectile::SetDirection(sf::Sprite)'
1>        c:\users\darkspirit\documents\visual studio 2008\projects\zombie\zombie\projectile.h(13) : see declaration of 'Projectile::SetDirection'
1>c:\users\darkspirit\documents\visual studio 2008\projects\zombie\zombie\projectile.cpp(11) : error C2371: 'Projectile::SetDirection' : redefinition; different basic types
1>        c:\users\darkspirit\documents\visual studio 2008\projects\zombie\zombie\projectile.h(13) : see declaration of 'Projectile::SetDirection'
1>c:\users\darkspirit\documents\visual studio 2008\projects\zombie\zombie\projectile.cpp(20) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>c:\users\darkspirit\documents\visual studio 2008\projects\zombie\zombie\projectile.cpp(20) : error C2556: 'int Projectile::SetSpeed(float)' : overloaded function differs only by return type from 'void Projectile::SetSpeed(float)'
1>        c:\users\darkspirit\documents\visual studio 2008\projects\zombie\zombie\projectile.h(15) : see declaration of 'Projectile::SetSpeed'
1>c:\users\darkspirit\documents\visual studio 2008\projects\zombie\zombie\projectile.cpp(20) : error C2371: 'Projectile::SetSpeed' : redefinition; different basic types
1>        c:\users\darkspirit\documents\visual studio 2008\projects\zombie\zombie\projectile.h(15) : see declaration of 'Projectile::SetSpeed'

[jak]

You need a return type before your method definitions. Stick a [i]void[/i] there.

[DarkSpirit05er]

Oh. :v:

[editline]08:35PM[/editline]

How would I go about making the Think() function? Never did one before and I can't find any examples so I don't have any idea of what it should actually contain.

[jak]

Call it just before you draw it

[DarkSpirit05er]

How do I make it drawable?

[nos217]

Bullet1.think();
Bullet1.draw();

[DarkSpirit05er]

I created the Think function at main.cpp.

[cpp]
void Think(Projectile Targ)
{
Targ.SetSpeed(1);
}
[/cpp]

SetSpeed:
[cpp]
void Projectile::SetSpeed(float SpeedMultiplier)
{
BulletImage.LoadFromFile("bullet.png");
Bullet.SetImage(BulletImage);

float BulletX = Bullet.GetPosition().x;
float BulletY = Bullet.GetPosition().y;

Bullet.SetX(BulletX * SpeedMultiplier);
Bullet.SetY(BulletY * SpeedMultiplier);
}
[/cpp]

Now, before all the draws I put in "Think(Bullet);", now how do I make Bullet drawable?

I did everything wrong, right?

[editline]09:24PM[/editline]

Also, I do realize the bullet won't get out of the same spot.

[nos217]

Yeah that's a really weird way to do it. I used to do things weird ways like that, until I relearned classes.