So you see optifine cape system? I am trying to reverse engineer it. The reason why is because other than lunar client, which I refuse to try to break apart, I am trying to break down how I can make a mod, where everyone can see the cape...

Reguardless I have got a speical issue how not understanding the code

​

private final void loadCape(final AbstractClientPlayerEntity acp)
{
final String name = acp.getName().getString();
final NetworkPlayerInfo playerInfo = acp.getPlayerInfo();
Util.getServerExecutor().execute(() -> {
try
{
final URL url = new URL(String.format("http://s.optifine.net/capes/%s.png", name));
final NativeImage nativeImage = NativeImage.read(url.openStream());
final DynamicTexture dynamicTexture = new DynamicTexture(this.parseCape(nativeImage));
final ResourceLocation resourceLocation = mc.getTextureManager().getDynamicTextureLocation("optifinecapes/", dynamicTexture);
mc.getTextureManager().loadTexture(resourceLocation, dynamicTexture);
playerInfo.playerTextures.put(Type.CAPE, resourceLocation);
playerInfo.playerTextures.put(Type.ELYTRA, resourceLocation);
}
catch (final IOException e)
{
// no cape
}
});

​

I understand the structure to a degree, it goes to site to replicate this, but what I do not fully grasp is, if I wanted to set up my own site, how would I make the png user name system?