## scie204.cpp - added
#include <algorithm>	// for sort()

## DrawGLScene - added one line below

int DrawGLScene()
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);// Clear Screen And Depth Buffer
	glLoadIdentity();//Reset The Current Modelview Matrix
	glPushMatrix();
	glTranslatef(0.0f, 0.0f, -12.0f);//move away (always need to do this)



	////////////////////////////////////
	//start drawing

## added this here
	// before drawing anything, sort the array in z-order from farthest to nearest
	// to make alpha blending work right
	std::sort(winter, winter + 74, cmp_flakes);

## c_flakes.cpp added
// this shouldn't really go here, but whatever...
bool cmp_flakes(const c_flakes &a, const c_flakes &b)
{
	return (a.zPos < b.zPos);
}

## c_flakes.h added (must go at the bottom)
// not the right place for this...
bool cmp_flakes(const c_flakes &a, const c_flakes &b);