Simple ESP

SimpleESP.java

@name("Simple ESP")
@author("Author")
@description("Simple ESP Addon")

public void onRenderEvent(NeonRenderEvent event) {
    if (!event.isOverlay() && !event.isWorldPass()) return;

    // loop through all the players
    for (EntityPlayer player : mc.theWorld.playerEntities) {
        // don't draw anything if the entity is the local player
        if (player instanceof EntityPlayerSP) continue;

        Vector3d worldPosition = getMathUtil().lerp(player, event.getPartialTicks());

        // 2d screen rendering
        if (event.isOverlay()) {
            Vector2f screenPosition = getRenderer().worldToScreen(worldPosition);

            // skip off-screen entities
            if (screenPosition == null) continue;

            // draw a 2d white rectangle on the player's position
            getRenderer().rectangle2D(
                event.getRenderStack(),
                screenPosition.x,
                screenPosition.y,
                5.0f, 5.0f, // width, height
                Color.WHITE
            );
        } else {
            // 3d rendering
            getRenderer().circle3D(
                event.getRenderStack(),
                (float) worldPosition.x,
                (float) worldPosition.y,
                (float) worldPosition.z,
                1.0f, // radius
                2.0f, // thickness
                Color.WHITE
            );
        }
    }
}