#include <amxmod>
#include <amxmisc>
#include <VexdUM>

new gmsgSetFOV
new gmsgCrosshair
new g_lastFov[33]
new g_MinMaxFov[33][2]
new g_doFov[33]
new g_resetHud[33]

public plugin_init()
{
  register_plugin("CSS Zoom", "0.3.1", "Evaldas")
  register_cvar("css_zoom", "1")
  register_event("ResetHUD", "eventResetHud", "b")
  register_event("SetFOV", "eventSetFOV", "be")
  gmsgSetFOV = get_user_msgid("SetFOV")
  gmsgCrosshair = get_user_msgid("Crosshair")
}

public client_connect(id)
{
  g_doFov[id] = 0
  g_resetHud[id] = 0
}

public eventResetHud(id)
{
  g_resetHud[id] = 1
  set_task(0.2, "clearResetHud", id+978465)
}

public clearResetHud(id)
{
  g_resetHud[id-978465] = 0
}

public eventSetFOV(id)
{
  if(g_resetHud[id])
    return PLUGIN_CONTINUE

  new fov = read_data(1)
  if(fov < g_lastFov[id])
  {
    g_MinMaxFov[id][0] = fov
    g_MinMaxFov[id][1] = g_lastFov[id]
    g_doFov[id] = 1
  }
  else if(fov > g_lastFov[id])
  {
    g_MinMaxFov[id][0] = fov
    g_MinMaxFov[id][1] = g_lastFov[id]
    g_doFov[id] = 1

  }
  else g_doFov[id] = 0
  g_lastFov[id] = fov

  return PLUGIN_CONTINUE
}

public client_prethink(id)
{
  if(get_cvar_num("css_zoom") == 0)
    return PLUGIN_CONTINUE

  if(g_doFov[id])
  {
    if(g_MinMaxFov[id][1] > g_MinMaxFov[id][0])
    {
      g_MinMaxFov[id][1] -= 2
      if(g_MinMaxFov[id][1] <= g_MinMaxFov[id][0])
      {
        message_begin(MSG_ONE, gmsgSetFOV, {0,0,0}, id)
        write_byte(g_MinMaxFov[id][0])
        message_end()
        g_doFov[id] = 0
      }
      else
      {
        message_begin(MSG_ONE, gmsgSetFOV, {0,0,0}, id)
        write_byte(g_MinMaxFov[id][1])
        message_end()
      }
    }
    else
    {
      g_MinMaxFov[id][1] += 2
      if(g_MinMaxFov[id][1] >= g_MinMaxFov[id][0])
      {
        message_begin(MSG_ONE, gmsgSetFOV, {0,0,0}, id)
        write_byte(g_MinMaxFov[id][0])
        message_end()
        g_doFov[id] = 0
        new clip, ammo, wpn = get_user_weapon(id, clip, ammo)
        if(wpn == CSW_AWP || wpn == CSW_SCOUT || wpn == CSW_G3SG1 || wpn == CSW_SG550)
        {
          message_begin(MSG_ONE, gmsgCrosshair, {0,0,0}, id)
          write_byte(0)
          message_end()
        }
      }
      else
      {
        message_begin(MSG_ONE, gmsgSetFOV, {0,0,0}, id)
        write_byte(g_MinMaxFov[id][1])
        message_end()
      }
    }
  }
  return PLUGIN_CONTINUE
}