well I have drawn 2 space ships on the screen.I can get one of them to move and rotate.I cant get the second one to rotate of move however.here is the code I am working on.
void DrawShip()
{
glPushMatrix();
glColor3f(0.0f,1.0f,0.0f);
glBegin(GL_LINE_LOOP);
glVertex3f(0.0f,-0.25f,0.0f);
glVertex3f(-0.25f,-0.5f,0.0f);
glVertex3f(-0.5f,-0.5f,0.0f);
glVertex3f(-0.0f,0.5f,0.0f);
glVertex3f(0.5f,-0.5f,0.0f);
glVertex3f(0.25f,-0.5f,0.0f);
glVertex3f(0.0f,-0.25f,0.0f);
glEnd();
glPopMatrix();
}
void DrawAlien()
{
glPushMatrix();
glLoadIdentity();
glTranslatef(2.0f,0.0f,0.0f);
glColor3f(1.0f,0.0f,0.0f);
glBegin(GL_LINE_LOOP);
glVertex3f(0.0f,-0.25f,0.0f);
glVertex3f(-0.25f,-0.5f,0.0f);
glVertex3f(-0.5f,-0.5f,0.0f);
glVertex3f(-0.0f,0.5f,0.0f);
glVertex3f(0.5f,-0.5f,0.0f);
glVertex3f(0.25f,-0.5f,0.0f);
glVertex3f(0.0f,-0.25f,0.0f);
glEnd();
glPopMatrix();
}
void RenderScene()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
DrawShip();
DrawAlien();
glutSwapBuffers();
}
void ShipLeft()
{
glRotatef(m,0.0f,0.0f,1.0f);
m+=0.1f;
}
void ShipRight()
{
}
void ShipUp()
{
}
void ShipDown()
{
}
void ShipBullet()
{
}
void AlienUp()
{
glTranslatef(0.0f,i,0.0f);
i+=0.1f;
}
void AlienDown()
{
glTranslatef(0.0f,j,0.0f);
j-=0.1f;
}
void AlienLeft()
{
glRotatef(k,0.0f,0.0f,1.0f);
k+=0.1f;
}
void AlienRight()
{
glRotatef(l,0.0f,0.0f,1.0f);
l-=0.1f;
}