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#include <amxmodx>
#include <fakemeta>
#include <hamsandwich>

#define PLUGIN "Paintball Gun"
#define VERSION "3.4"
#define AUTHOR "WhooKid"

#define MAX_PAINTBALLS    200
#define TASK_PB_RESET    1000
#define TASK_RELOAD    2000

new g_paintballs[MAX_PAINTBALLS], g_pbstatus[MAX_PAINTBALLS], g_pbcount, Float:lastshot[33], Float:nextattack[33], freezetime;
new pbgun, pbusp, pbglock, color, shots, veloc, speed, blife, sound, bglow, damge, friendlyfire, tgun, ctgun, beamspr;

static const g_shot_anim[4] = {0, 3, 9, 5};
static const g_pbgun_models[11][] = {"models/v_pbgun.mdl", "models/v_pbgun1.mdl", "models/v_pbgun2.mdl", "models/v_pbgun3.mdl", "models/v_pbgun4.mdl", "models/v_pbgun5.mdl", "models/v_pbgun6.mdl", "models/v_pbgun7.mdl", "models/v_pbgun8.mdl", "models/v_pbgun9.mdl", "models/v_pbgun10.mdl"};

public plugin_init()
{
  register_plugin(PLUGIN, VERSION, AUTHOR);
  register_cvar("paintballgun", VERSION, FCVAR_SERVER|FCVAR_UNLOGGED);
  register_clcmd("say /ent", "ent_info", ADMIN_SLAY);
  pbgun = register_cvar("amx_pbgun", "1");
  pbusp = register_cvar("amx_pbusp", "1");
  pbglock = register_cvar("amx_pbglock", "1");

  if (get_pcvar_num(pbgun) || get_pcvar_num(pbusp) || get_pcvar_num(pbglock))
  {
   register_event("CurWeapon", "ev_curweapon", "be");
   register_logevent("ev_roundstart", 2, "0=World triggered", "1=Round_Start");
   if (get_cvar_num("mp_freezetime") > 0)
    register_event("HLTV", "ev_freezetime", "a", "1=0", "2=0");

   register_forward(FM_Touch, "fw_touch");
   register_forward(FM_SetModel, "fw_setmodel");
   register_forward(FM_PlayerPreThink, "fw_playerprethink", 1);
   register_forward(FM_UpdateClientData, "fw_updateclientdata", 1);

   color = register_cvar("pbgun_color", "2");
   shots = register_cvar("pbgun_shots", "100");
   veloc = register_cvar("pbgun_velocity", "2000");
   speed = register_cvar("pbgun_speed", "0.08");
   blife = register_cvar("pbgun_life", "15");
   sound = register_cvar("pbgun_sound", "1");
   bglow = register_cvar("pbgun_glow", "a");
   damge = register_cvar("pbgun_damage", "100");
   friendlyfire = get_cvar_pointer("mp_friendlyfire");

   new a, max_ents_allow = global_get(glb_maxEntities) - 5;
   for (a = 1; a <= get_pcvar_num(shots); a++)
    if (a < MAX_PAINTBALLS)
     if (engfunc(EngFunc_NumberOfEntities) < max_ents_allow)
     {
      g_paintballs[a] = engfunc(EngFunc_CreateNamedEntity, engfunc(EngFunc_AllocString, "info_target"));
      if (pev_valid(g_paintballs[a]))
      {
       set_pev(g_paintballs[a], pev_effects, pev(g_paintballs[a], pev_effects) | EF_NODRAW);
       g_pbcount++;
      }
     }
   if (g_pbcount < 1)
    set_fail_state("[AMXX] Failed to load Paintball Gun (unable to create ents)");

   server_print("*** %s v%s by %s Enabled ***", PLUGIN, VERSION, AUTHOR);
  }
}

public plugin_precache()
{
  register_cvar("amx_pbgun", "1");
  register_cvar("amx_pbusp", "1");
  register_cvar("amx_pbglock", "1");
  register_cvar("pbgun_tgun", "3");
  register_cvar("pbgun_ctgun", "7");
  tgun = get_cvar_num("pbgun_tgun");
  ctgun = get_cvar_num("pbgun_ctgun");
  if (get_cvar_num("amx_pbgun")) {
   precache_model(g_pbgun_models[tgun]);
   precache_model(g_pbgun_models[ctgun]);
   precache_model((ctgun) ? "models/p_pbgun1.mdl" : "models/p_pbgun.mdl");
   precache_model("models/w_pbgun.mdl");
  }
  if (get_cvar_num("amx_pbusp")) {
   precache_model("models/v_pbusp.mdl");
   precache_model("models/p_pbusp.mdl");
  }
  if (get_cvar_num("amx_pbglock")) {
   precache_model("models/v_pbglock.mdl");
   precache_model("models/p_pbglock.mdl");
  }
  if (get_cvar_num("amx_pbgun") || get_cvar_num("amx_pbusp") || get_cvar_num("amx_pbglock")) {
   precache_sound("misc/pb1.wav");
   precache_sound("misc/pb2.wav");
   precache_sound("misc/pb3.wav");
   precache_sound("misc/pb4.wav");
   precache_sound("misc/pbg.wav");
   precache_model("models/w_paintball.mdl");
   precache_model("sprites/paintball.spr");
  }
  beamspr = precache_model("sprites/laserbeam.spr");
}

public ent_info(id)
  client_print(id, print_chat, "[AMXX] [Ent Info (Current/Max)] Paintballs: (%d/%d)   Entities: (%d/%d)", g_pbcount, get_pcvar_num(shots), engfunc(EngFunc_NumberOfEntities), global_get(glb_maxEntities));

public ev_curweapon(id)
{
  new model[25];
  pev(id, pev_viewmodel2, model, 24);
  if (equali(model, "models/v_mp5.mdl") && get_pcvar_num(pbgun))
  {
   set_pev(id, pev_viewmodel2, (get_user_team(id) == 1) ? g_pbgun_models[tgun] : g_pbgun_models[ctgun]);
   set_pev(id, pev_weaponmodel2, (ctgun) ? "models/p_pbgun1.mdl" : "models/p_pbgun.mdl");
  }
  else if (equali(model, "models/v_usp.mdl") && get_pcvar_num(pbusp))
  {
   set_pev(id, pev_viewmodel2, "models/v_pbusp.mdl");
   set_pev(id, pev_weaponmodel2, "models/p_pbusp.mdl");
  }
  else if (equali(model, "models/v_glock18.mdl") && get_pcvar_num(pbglock))
  {
   set_pev(id, pev_viewmodel2, "models/v_pbglock.mdl");
   set_pev(id, pev_weaponmodel2, "models/p_pbglock.mdl");
  }
}

public fw_setmodel(ent, model[])  
{
   if (equali(model, "models/w_mp5.mdl"))  
   if (get_pcvar_num(pbgun))
   {
    engfunc(EngFunc_SetModel, ent, "models/w_pbgun.mdl");
    return FMRES_SUPERCEDE;
   }
  return FMRES_IGNORED;
}

public fw_updateclientdata(id, sw, cd_handle)
{
  if (user_has_pbgun(id) && cd_handle)
  {
   set_cd(cd_handle, CD_ID, 1);
   get_cd(cd_handle, CD_flNextAttack, nextattack[id]);
   //set_cd(cd_handle, CD_flNextAttack, 10.0);
   return FMRES_HANDLED;
  }
  return FMRES_IGNORED;
}

public fw_playerprethink(id)
{
  new my_pbgun = user_has_pbgun(id);
  if (my_pbgun)
  {
   new buttons = pev(id, pev_button);
   if (buttons & IN_ATTACK)
   {
    new ammo, null = get_user_weapon(id, ammo, null);
    if (ammo)
    {
     set_pev(id, pev_button, buttons & ~IN_ATTACK);
     new Float:gametime = get_gametime(), Float:g_speed;
     if (my_pbgun == 1)
      g_speed = get_pcvar_float(speed);
     else
      g_speed = (my_pbgun == 2) ? get_pcvar_float(speed) * 2.0 : get_pcvar_float(speed) * 3.0;
     if (gametime-lastshot[id] > g_speed  && nextattack[id] < 0.0 && !freezetime)
     {
      if (paint_fire(id))
      {
       lastshot[id] = gametime;
       set_user_clip(id, ammo - 1);
       set_pev(id, pev_punchangle, Float:{-0.5, 0.0, 0.0});
       message_begin(MSG_ONE_UNRELIABLE, SVC_WEAPONANIM, _, id);
       write_byte(g_shot_anim[my_pbgun]);
       write_byte(0);
       message_end();
       if (get_pcvar_num(sound))
        emit_sound(id, CHAN_AUTO, "misc/pbg.wav", 1.0, ATTN_NORM, 0, PITCH_NORM);
      }
     }
    }
   }
  }
  return FMRES_IGNORED;
}

public paint_fire(id)
{
  new a, ent;
  while (a++ < g_pbcount - 1 && !ent)
   if (g_pbstatus[a] == 0)
    ent = g_pbstatus[a] = g_paintballs[a];
  if (!ent)
   while (a-- > 1 && !ent)
    if (g_pbstatus[a] == 2)
     ent = g_pbstatus[a] = g_paintballs[a];

  if (pev_valid(ent) && is_user_alive(id))
  {
   new Float:vangles[3], Float:nvelocity[3], Float:voriginf[3], vorigin[3], clr;
   set_pev(ent, pev_classname, "pbBullet");
   set_pev(ent, pev_owner, id);
   engfunc(EngFunc_SetModel, ent, "models/w_paintball.mdl");
   engfunc(EngFunc_SetSize, ent, Float:{-1.0, -1.0, -1.0}, Float:{1.0, 1.0, 1.0});

   switch (get_pcvar_num(color))
   {
    case 2: clr = (get_user_team(id) == 1) ? 0 : 1;
    case 3: clr = (get_user_team(id) == 1) ? 4 : 3;
    case 4: clr = (get_user_team(id) == 1) ? 2 : 5;
    default: clr = random_num(0, 6);
   }
   set_pev(ent, pev_skin, clr);
    
   get_user_origin(id, vorigin, 1);
   IVecFVec(vorigin, voriginf);
   engfunc(EngFunc_SetOrigin, ent, voriginf);

   vangles[0] = random_float(-180.0, 180.0);
   vangles[1] = random_float(-180.0, 180.0);
   set_pev(ent, pev_angles, vangles);

   pev(id, pev_v_angle, vangles);
   set_pev(ent, pev_v_angle, vangles);
   pev(id, pev_view_ofs, vangles);
   set_pev(ent, pev_view_ofs, vangles);

   set_pev(ent, pev_solid, 2);
   set_pev(ent, pev_movetype, 5);

   velocity_by_aim(id, get_pcvar_num(veloc), nvelocity);
   set_pev(ent, pev_velocity, nvelocity);
   set_pev(ent, pev_effects, pev(ent, pev_effects) & ~EF_NODRAW);

   set_task(0.1, "paint_glow", ent);
   set_task(15.0 , "paint_reset", ent+TASK_PB_RESET);
  }

  return ent;
}

public fw_touch(bullet, ent)
{
  new class[20];
  pev(bullet, pev_classname, class, 19);
  if (!equali(class, "pbBullet"))
   return FMRES_IGNORED;

  new Float:origin[3], class2[20], owner = pev(bullet, pev_owner), is_ent_alive = is_user_alive(ent);
  pev(ent, pev_classname, class2, 19);
  pev(bullet, pev_origin, origin);

  if (is_ent_alive)
  {
   if (owner == ent || pev(ent, pev_takedamage) == DAMAGE_NO)
    return FMRES_IGNORED;
   if (get_user_team(owner) == get_user_team(ent))
    if (!get_pcvar_num(friendlyfire))
     return FMRES_IGNORED;

   ExecuteHam(Ham_TakeDamage, ent, owner, owner, float(get_pcvar_num(damge)), 4098);
  }

  if (!equali(class, class2))
  {  
   set_pev(bullet, pev_velocity, Float:{0.0, 0.0, 0.0});
   set_pev(bullet, pev_classname, "pbPaint");
   set_pev(bullet, pev_solid, 0);
   set_pev(bullet, pev_movetype, 0);
   engfunc(EngFunc_SetModel, bullet, "sprites/paintball.spr");

   new a, findpb = 0;
   while (a++ < g_pbcount && !findpb)
    if (g_paintballs[a] == bullet)
     findpb = g_pbstatus[a] = 2;

   remove_task(bullet);
   remove_task(bullet+TASK_PB_RESET);

   if (get_pcvar_num(sound))
   {
    static wav[20];
    formatex(wav, 20, is_ent_alive ? "player/pl_pain%d.wav" : "misc/pb%d.wav", is_ent_alive ? random_num(4,7) : random_num(1,4));
    emit_sound(bullet, CHAN_AUTO, wav, 1.0, ATTN_NORM, 0, PITCH_NORM);
   }

   new bool:valid_surface = (is_ent_alive || containi(class2, "door") != -1) ? false : true;
   if (pev(ent, pev_health) && !is_ent_alive)
   {
    ExecuteHam(Ham_TakeDamage, ent, owner, owner, float(pev(ent, pev_health)), 0);
    valid_surface = false;
   }
   if (valid_surface)
   {
    paint_splat(bullet);
    set_task(float(get_pcvar_num(blife)), "paint_reset", bullet+TASK_PB_RESET);
   }
   else
    paint_reset(bullet+TASK_PB_RESET);

   return FMRES_HANDLED;  
  }

  return FMRES_IGNORED;
}

public paint_splat(ent)
{
  new Float:origin[3], Float:norigin[3], Float:viewofs[3], Float:angles[3], Float:normal[3], Float:aiming[3];
  pev(ent, pev_origin, origin);
  pev(ent, pev_view_ofs, viewofs);
  pev(ent, pev_v_angle, angles);

  norigin[0] = origin[0] + viewofs[0];
  norigin[1] = origin[1] + viewofs[1];
  norigin[2] = origin[2] + viewofs[2];
  aiming[0] = norigin[0] + floatcos(angles[1], degrees) * 1000.0;
  aiming[1] = norigin[1] + floatsin(angles[1], degrees) * 1000.0;
  aiming[2] = norigin[2] + floatsin(-angles[0], degrees) * 1000.0;

  engfunc(EngFunc_TraceLine, norigin, aiming, 0, ent, 0);
  get_tr2(0, TR_vecPlaneNormal, normal);

  vector_to_angle(normal, angles);
  angles[1] += 180.0;
  if (angles[1] >= 360.0) angles[1] -= 360.0;
  set_pev(ent, pev_angles, angles);
  set_pev(ent, pev_v_angle, angles);

  origin[0] += (normal[0] * random_float(0.3, 2.7));
  origin[1] += (normal[1] * random_float(0.3, 2.7));
  origin[2] += (normal[2] * random_float(0.3, 2.7));
  engfunc(EngFunc_SetOrigin, ent, origin);
  set_pev(ent, pev_frame, float(random_num( (pev(ent, pev_skin) * 18), (pev(ent, pev_skin) * 18) + 17 ) ));
  if (pev(ent, pev_renderfx) != kRenderFxNone)
   set_rendering(ent);
}

public paint_glow(ent)
{
  if (pev_valid(ent))
  {
   static pbglow[5], clr[3];
   get_pcvar_string(bglow, pbglow, 4);
   switch (get_pcvar_num(color))
   {
    case 2: clr = (get_user_team(pev(ent, pev_owner))==1) ? {255, 0, 0} : {0, 0, 255};
    default: clr = {255, 255, 255};
   }
   if (read_flags(pbglow) & (1 << 0))
    set_rendering(ent, kRenderFxGlowShell, clr[0], clr[1], clr[2], kRenderNormal, 255);
   if (read_flags(pbglow) & (1 << 1))
   {
    message_begin(MSG_BROADCAST, SVC_TEMPENTITY);
    write_byte(TE_BEAMFOLLOW);
    write_short(ent);
    write_short(beamspr);
    write_byte(4);
    write_byte(2);
    write_byte(clr[0]);
    write_byte(clr[1]);
    write_byte(clr[2]);
    write_byte(255);
    message_end();
   }
  }
}

public paint_reset(ent)
{
  remove_task(ent);
  ent -= TASK_PB_RESET;
  new a, findpb = 1;
  while (a++ <= g_pbcount && findpb)
   if (g_paintballs[a] == ent)
    findpb = g_pbstatus[a] = 0;

  set_pev(ent, pev_effects, pev(ent, pev_effects) | EF_NODRAW);
  engfunc(EngFunc_SetSize, ent, Float:{0.0, 0.0, 0.0}, Float:{0.0, 0.0, 0.0});
  set_pev(ent, pev_velocity, Float:{0.0, 0.0, 0.0});
  engfunc(EngFunc_SetOrigin, ent, Float:{-2000.0, -2000.0, -2000.0});
  if (pev(ent, pev_renderfx) != kRenderFxNone)
   set_rendering(ent);
}

public ev_roundstart()
{
  for (new a = 1; a <= g_pbcount; a++)
   if (g_pbstatus[a] != 0)
    paint_reset(g_paintballs[a]+TASK_PB_RESET);
  if (freezetime)
   freezetime = 0;
}

public ev_freezetime()
  freezetime = 1;

stock user_has_pbgun(id)
{
  if (is_user_alive(id))
  {
   new model[25];
   pev(id, pev_viewmodel2, model, 24);
   if (containi(model, "models/v_pbgun") != -1)
    return 1;
   else if (equali(model, "models/v_pbusp.mdl"))
    return 2;
   else if (equali(model, "models/v_pbglock.mdl"))
    return 3;
  }
  return 0;
}

stock set_user_clip(id, ammo)
{
  new weaponname[32], weaponid = -1, weapon = get_user_weapon(id, _, _);
  get_weaponname(weapon, weaponname, 31);
  while ((weaponid = engfunc(EngFunc_FindEntityByString, weaponid, "classname", weaponname)) != 0)
   if (pev(weaponid, pev_owner) == id) {
    set_pdata_int(weaponid, 51, ammo, 4);
    return weaponid;
   }
  return 0;
}

// teame06's function
stock set_rendering(index, fx=kRenderFxNone, r=0, g=0, b=0, render=kRenderNormal, amount=16)
{
  set_pev(index, pev_renderfx, fx);
  new Float:RenderColor[3];
  RenderColor[0] = float(r);
  RenderColor[1] = float(g);
  RenderColor[2] = float(b);
  set_pev(index, pev_rendercolor, RenderColor);
  set_pev(index, pev_rendermode, render);
  set_pev(index, pev_renderamt, float(amount));
}