Problem with move

[Radek_1]

1) So I have a 3d plane and terrain. It's flight forward. The plane is armed with 2 bombs.

2) I shoot bomb, it faster than plane.

3) The problem is when I want move my plane. The bomb is moving with plane

4) I want that bomb move independent after shoot, how can I make it?

I'm beginer in OpenGL I've tired with glPushMatrix and glPopMatrix but it doesn't work. Anyone can help me?

The code:

void renderScene(void) {
	hMap.DrawHeightMap(); // Draw terrain
 
	glPushMatrix();
		glTranslatef(xo,yo,zo);  // Plane's position
		glRotatef(graus, 1.0, 0.0, 0.0); //Change plane position
		glRotatef(grausz, 0.0, 0.0, 1.0); 
 
		plane->draw(); // Draw plane
 
		// Bombs, connect it to "plane position"
		glPushMatrix();
			glTranslatef(-0.35f,-0.22f,bomb1air+(-0.5f));
				bomb1->draw();
			glTranslatef(0.70f,0.0f,bomb2air+(0.0f-bomb1air));
				bomb2->draw();
			glTranslatef(-0.35f,0.22f,(0.5f-(bomb1air+bomb2air)));
		glPopMatrix();
 
	glPopMatrix();
	glFlush();
}

When I click shoot, I'm changing bomb1air/bomb2air position+0.01 so it moves faster than plane (in the glutIdleFunc() function).

I've made an image to show you what i mean but unfortunetly I can't post any links.

[tonyo_au]

You are pushing the matrix but not resetting before you draw your bomb.

You logic should be

push matrix
set matrix to a know value (usually the identity)
modify matrix
draw obj
pop matrix

do the same thing for the next obj

[Radek_1]

Everything works fine (bombs are connected under wings and move with plane) until I shoot bomb. Its fly away from the plane. I want turn left the plane and bomb which I've shooted also turn left.

I've tired something like that:

void renderScene(void) {
	glLoadIdentity();
 
	//Camera
	gluLookAt(camx+xo, camy+yo,	camz+zo
		  xo,	yo,	zo,		
		  0.0f, 1.0f,	0.0f);	
 
	hMap.DrawHeightMap(); // Draw terrain
 
	glPushMatrix();
		glTranslatef(xo,yo,zo);  // Plane's position
		glRotatef(graus, 1.0, 0.0, 0.0); //Change plane position
		glRotatef(grausz, 0.0, 0.0, 1.0);  
		plane->draw(); // Draw plane
	glPopMatrix();
 
	// Bombs, connect it to "plane position"
	glPushMatrix();
		glLoadIdentity();
		glTranslatef(xo,yo,zo);  // Plane's position (connect it under wing)
		glTranslatef(-0.35f,-0.22f,bomb1air+(-0.5f));
			bomb1->draw();
		glTranslatef(0.70f,0.0f,bomb2air+(0.0f-bomb1air));
			bomb2->draw();
		glTranslatef(-0.35f,0.22f,(0.5f-(bomb1air+bomb2air)));
	glPopMatrix();
 
glFlush();
}

But I don't even see the bombs now.

Btw. I've also camera connected with plane (camera is placed behind airplane)


Edit:
It works! Problem was with the camera setting, thanks tonyo_au!