Collision Detection: What Am I Doing Wrong?

I've almost got this thing working. You're supposed to be able to push up against the other quad and move it, but it works a little differently.

Code:

void hitTesting();

GLfloat xpos=-1.5f;
GLfloat ypos=0.0f;

GLfloat xpos2=0.0f;

GLfloat left=-1.0f;
GLfloat right=1.0f;
GLfloat left2=-1.0f;
GLfloat right2=1.0f;
int DrawGLScene(GLvoid)
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glLoadIdentity();
	glTranslatef(xpos,ypos,-6.0f);	
	
	glColor3f(1.0f,1.0f,1.0f);
	glBegin(GL_QUADS);
		glVertex3f(left, 1.0f, 0.0f);
		glVertex3f(right, 1.0f, 0.0f);
		glVertex3f( right,-1.0f, 0.0f);
		glVertex3f(left,-1.0f, 0.0f);
	glEnd();

	glLoadIdentity();
	glColor3f(0.6f,0.0f,0.0f);
	glTranslatef(xpos2,0.0f,-6.0f);
		
	glBegin(GL_QUADS);
		glVertex3f( left2, 1.0f, 0.0f);
		glVertex3f( right2, 1.0f, 0.0f);
		glVertex3f( right2,-1.0f, 0.0f);
		glVertex3f(left2,-1.0f, 0.0f);
	glEnd();

	hitTesting();
	return TRUE;
}

void hitTesting()
{
	if (xpos>left2)
		xpos2+=0.2f;
	if (xpos<right2)
		xpos2-=0.2f;
}

void KeyControl()
{
	if (keys[VK_UP])
ypos+= 0.2f;
	if (keys[VK_DOWN])
ypos-= 0.2f;
	if (keys[VK_RIGHT])
xpos+= 0.2f;
	if (keys[VK_LEFT])
xpos-= 0.2f;
}

What am I doing wrong?

I think you got the directions the other way round. Try revert them all.

wiser = krak

thanks for the heads up Silver. He's been added to my ignore list.