Moving in 3D Space

#define piover180 0.0174532925f

class Unit
{
protected:
float x, y, z, speed, acceleration, max_speed, life;
bool alive;
public:
virtual void Create(float xpos, float ypos, float zpos){x=xpos;y=ypos;z=zpos;alive=true;life=100;}
virtual inline void SetSpeed(float s){ speed = s; }
virtual inline void SetAcceleration(float a){ acceleration = a; }
virtual inline void SetMaxSpeed(float s){ max_speed = s; }
virtual void Move();
virtual void Destroy(){
x = 0;
y = 0;
z = 0;
speed = 0;
acceleration = 0;
max_speed = 0;
alive = false;
}
virtual inline float GetX(){ return x; }
virtual inline float GetY(){ return y; }
virtual inline float GetZ(){ return z; }
virtual inline float SetX(float xpos){ x = xpos; }
virtual inline float SetY(float ypos){ y = ypos; }
virtual inline float SetZ(float zpos){ z = zpos; }
virtual inline bool IsAlive(){ return alive; }
virtual inline bool SetAlive(bool living){ alive = living; }
virtual inline float GetLife(){ return life; }
};

class Ship : public Unit
{
public:
float angle1, angle2;
void Move();
};

void Ship::Move()
{
x += speed * sin(angle1*piover180) * cos(angle2);
z += speed * cos(angle1*piover180) * cos(angle2);
y += speed * sin(angle2);

if( speed < max_speed )
{
speed += acceleration;
}
}

void DrawScene() //Called when the scene will be drawn
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();

glRotatef(ship.angle2, 1.0f, 0.0f, 0.0f);
glRotatef(ship.angle1, 0.0f, 1.0f, 0.0f);

glTranslatef(0, 0, -200);

glTranslatef(ship.GetX(), ship.GetY(), ship.GetZ());

glBegin(GL_TRIANGLES);
glVertex3f(5, -5, 0);
glVertex3f(-5, -5, 0);
glVertex3f(0, 5, 0);
glEnd();
}

void KeyControls() //Called before a call to the DrawScene function
{
if( keys[VK_UP] && ship.angle2 > -45 )
{
ship.angle2 -= adjustment;
}
if( keys[VK_DOWN] && ship.angle2 < 45)
{
ship.angle2 += adjustment;
}
if( keys[VK_LEFT] )
{
ship.angle1 -= adjustment*2;
}
if( keys[VK_RIGHT] )
{
ship.angle1 += adjustment*2;
}
}

int main(int argc, char* argv)
{
MSG msg;
BOOL done = FALSE;
CreateGLWindow("Asteroid Field", 640, 400, 16, false);
//^That function is in another file and properly working

ship.Create(0, 0, 100);
ship.SetSpeed(.001);
ship.SetAcceleration(.0001);
ship.SetMaxSpeed(.005);

while(!done)
{
if( PeekMessage(&msg, NULL, 0, 0, PM_REMOVE) )
{
if( msg.message == WM_QUIT )
{
done = TRUE;
}
else
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
else
{
KeyControls();
ship.Move();
DrawScene();
SwapBuffers(hDC);
}
}
DestroyGLWindow();
//^That function is in another file and properly working
return msg.wParam;
}