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/***************************************************************************\
        ========================================
          * || [ZPA] Example Game Mode v1.6 || *
        ========================================

   -------------------
    *||DESCRIPTION||*
   -------------------

   This is an example game mode in which there are half Assassins
   and half Snipers. You can use this plugin as a guide on how to
   make custom game modes for Zombie Plague Advance.

   -------------
    *||CVARS||*
   -------------

   - zp_avsm_minplayers 2
      - Minimum players required for this game mode to be
        activated

   - zp_avsm_sniper_hp 1.5
      - Snipers HP multiplier
   
   - zp_avsm_assassin_hp 1.0
      - Assassins HP multiplier

   - zp_avsm_inf_ratio 0.5
      - Infection ratio of this game mode i.e how many players
        will turn into assassins [Total players * infection ratio]
   
\***************************************************************************/

#include <  amxmodx >
#include <  fun >
#include <  zombie_plague_advance >

/************************************************************\
|                  Customizations Section                    |
|        You can edit here according to your liking        |
\************************************************************/

// This is the chance value according to which this game mode will be called
// The higher the value the lesser the chance of calling this game mode
new const g_chance = 15

// This is the access flag required to start the game mode
// through the admin menu. Look in users.ini for more details
new const g_access_flag[] = "a"

// This is the sound which is played when the game mode is triggered
// Add as many as you want [Randomly chosen if more than one]
new const g_play_sounds[][] =
{
   "zombie_plague/nemesis1.wav" ,
   "zombie_plague/survivor1.wav"
}

// Comment the following line to disable ambience sounds
// Just add two slashes ( // )
#define AMBIENCE_SOUNDS

#if defined AMBIENCE_SOUNDS
// Ambience Sounds (only .wav and .mp3 formats supported)
// Add as many as you want [Randomly chosen if more than one]
new const g_sound_ambience[][] =
{
   "zombie_plague/perfect_sounds/armageddon_ambience.mp3"
}

// Duration in seconds of each sound
new const Float:g_sound_ambience_duration[] = { 58.0 , 56.0 }
#endif

/************************************************************\
|                  Customizations Ends Here..!!              |
|        You can edit the cvars in the plugin init          |
\************************************************************/

// Variables
new g_gameid, g_maxplayers, cvar_minplayers, cvar_ratio, cvar_sniperhp, cvar_assahp, g_msg_sync

// Ambience sounds task
#define TASK_AMB 3256

public plugin_init( )
{
   // Plugin registeration.
   register_plugin( "[ZP] Assassin vs Snipers Mode","1.0", "@bdul!" )
   
   // Register some cvars
   // Edit these according to your liking
   cvar_minplayers = register_cvar("zp_avsm_minplayers", "2")
   cvar_sniperhp =     register_cvar("zp_avsm_sniper_hp", "1.0")
   cvar_assahp =     register_cvar("zp_avsm_assassin_hp", "0.3")
   cvar_ratio =      register_cvar("zp_avsm_inf_ratio", "0.5")
   
   // Get maxplayers
   g_maxplayers = get_maxplayers( )
   
   // Hud stuff
   g_msg_sync = CreateHudSyncObj()
}

// Game modes MUST be registered in plugin precache ONLY
public plugin_precache( )
{
   // Read the access flag
   new access_flag = read_flags( g_access_flag )
   new i
   
   // Precache the play sounds
   for (i = 0; i < sizeof g_play_sounds; i++)
      precache_sound( g_play_sounds[i] )
   
   // Precache the ambience sounds
   #if defined AMBIENCE_SOUNDS
   new sound[100]
   for (i = 0; i < sizeof g_sound_ambience; i++)
   {
      if (equal(g_sound_ambience[i][strlen(g_sound_ambience[i])-4], ".mp3"))
      {
         formatex(sound, sizeof sound - 1, "sound/%s", g_sound_ambience[i])
         precache_generic( sound )
      }
      else
      {
         precache_sound( g_sound_ambience[i] )
      }
   }
   #endif
   
   // Register our game mode
   g_gameid = zp_register_game_mode( "Assassin vs Snipers Mode", access_flag, g_chance, 0, ZP_DM_BALANCE )
}

// Player spawn post
public zp_player_spawn_post( id )
{
   // Check for current mode
   if( zp_get_current_mode() == g_gameid )
   {
      // Check if the player is a zombie
      if( zp_get_user_zombie( id ))
      {
         // Make him an assassin instead
         zp_make_user_assassin( id )
         
         // Set his health
         set_user_health( id, floatround(get_user_health(id) * get_pcvar_float(cvar_assahp)) )
      }
      else
      {
         // Make him a sniper
         zp_make_user_sniper( id )
         
         // Set his health
         set_user_health( id, floatround(get_user_health(id) * get_pcvar_float(cvar_sniperhp)) )
      }
   }
}

public zp_round_started_pre( game )
{
   // Check if it is our game mode
   if( game == g_gameid )
   {
      // Check for min players
      if( fn_get_alive_players() < get_pcvar_num(cvar_minplayers) )
      {
         /**
          * Note:
          * This very necessary, you should return ZP_PLUGIN_HANDLED if
          * some conditions required by your game mode are not met
          * This will inform the main plugin that you have rejected
          * the offer and so the main plugin will allow other game modes
          * to be given a chance
          */
         return ZP_PLUGIN_HANDLED
      }
      // Start our new mode
      start_avs_mode( )
   }
   // Make the compiler happy =)
   return PLUGIN_CONTINUE
}

public zp_round_started( game, id )
{
   // Check if it is our game mode
   if( game == g_gameid )
   {
      // Show HUD notice
      set_hudmessage(221, 156, 21, -1.0, 0.17, 1, 0.0, 5.0, 1.0, 1.0, -1)
      ShowSyncHudMsg(0, g_msg_sync, "Assassins vs Snipers Mode !!!")
      
      // Play the starting sound
      client_cmd(0, "spk ^"%s^"", g_play_sounds[ random_num(0, sizeof g_play_sounds -1) ] )
      
      // Remove ambience task affects
      remove_task( TASK_AMB )
      
      // Set task to start ambience sounds
      #if defined AMBIENCE_SOUNDS
      set_task( 2.0, "start_ambience_sounds", TASK_AMB )
      #endif
   }
}

public zp_game_mode_selected( gameid, id )
{
   // Check if our game mode was called
   if( gameid == g_gameid )
      start_avs_mode( )
   
   // Make the compiler happy again =)
   return PLUGIN_CONTINUE
}

// This function contains the whole code behind this game mode
start_avs_mode( )
{
   // Create and initialize some important vars
   static i_assassins, i_max_assassins, id, i_alive
   i_alive = fn_get_alive_players()
   id = 0
   
   // Get the no of players we have to turn into assassins
   i_max_assassins = floatround( ( i_alive * get_pcvar_float( cvar_ratio ) ), floatround_ceil )
   i_assassins = 0
   
   // Randomly turn players into Assassins
   while (i_assassins < i_max_assassins)
   {
      // Keep looping through all players
      if ( (++id) > g_maxplayers) id = 1
      
      // Dead
      if ( !is_user_alive(id) )
         continue;
      
      // Random chance
      if (random_num(1, 5) == 1)
      {
         // Make user assassin
         zp_make_user_assassin(id)
         
         // Set his health
         set_user_health( id, floatround(get_user_health(id) * get_pcvar_float(cvar_assahp)) )
         
         // Increase counter
         i_assassins++
      }
   }
   
   // Turn the remaining players into snipers
   for (id = 1; id <= g_maxplayers; id++)
   {
      // Only those of them who are alive and are not assassins
      if ( !is_user_alive(id) || zp_get_user_assassin(id) )
         continue;
         
      // Turn into a sniper
      zp_make_user_sniper(id)
      
      // Set his health
      set_user_health( id, floatround(get_user_health(id) * get_pcvar_float(cvar_sniperhp)) )
   }
}

#if defined AMBIENCE_SOUNDS
public start_ambience_sounds( )
{
   // Variables
   static amb_sound[64], sound, Float:duration
   
   // Select our ambience sound
   sound = random_num( 0, sizeof g_sound_ambience - 1 )
   copy( amb_sound, sizeof amb_sound - 1 , g_sound_ambience[ sound ] )
   duration = g_sound_ambience_duration[ sound ]
   
   // Check whether it's a wav or mp3, then play it on clients
   if ( equal( amb_sound[ strlen( amb_sound ) - 4 ], ".mp3" ) )
      client_cmd( 0, "mp3 play ^"sound/%s^"", amb_sound )
   else
      client_cmd( 0, "spk ^"%s^"", sound )
   
   // Start the ambience sounds
   set_task( duration, "start_ambience_sounds", TASK_AMB )
}
public zp_round_ended( winteam )
{
   // Stop ambience sounds on round end
   remove_task( TASK_AMB )
}
#endif

// This function returns the no. of alive players
// Feel free to use this in your plugin when you
// are making your own game modes.
fn_get_alive_players( )
{
   static i_alive, id
   i_alive = 0
   
   for ( id = 1; id <= g_maxplayers; id++ )
   {
      if( is_user_alive( id ) )
         i_alive++
   }
   return i_alive;
}


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