//=============================================================================
// Extension for Yanfly Engine Plugins - Party Replace On Death
// YEP_X_PartyReplaceOnDeath.js
//=============================================================================

var Imported = Imported || {};
Imported.YEP_PartySystem = true;

var Yanfly = Yanfly || {};
Yanfly.Party = Yanfly.Party || {};

//=============================================================================
 /*:
 * @plugindesc v0.90 Initial Release.
 * Allows backup party members to replace a dead party, like in DQ4.
 * @author Wilminator
 *
 * @param ---General---
 * @default
 *
 * @param Replace On All Dead
 * @desc Replace active party with backup actors if party is all dead?
 * NO - false     YES - true
 * @default false
 *
 * @param Replace With Formation Screen
 * @desc Use the Formation screen to replace an all dead party?
 * NO - false     YES - true
 * @default true
 *
 * @param Replace On All Dead Notification
 * @desc Text displayed when swapping out for live actors.
 * @default Comrades jump out to avenge the fallen!
 *
 *
 * @help
 * ============================================================================
 * Introduction
 * ============================================================================
 *
 * This plugin enhances Yanfly's Party System plugin.  It adds the option to 
 * use any live members of your party not involved in combat to replace a 
 * completely wiped out team.  The author has the choice of using the party 
 * menu or randomly filling combatatnt slots with anyone with a pulse ;)
 *
 * This plugin requires YEP_PartySystem.js and must be below it.
 *
 * This plugin is plug and play. All you have to do is just turn it on and
 * change the parameters to your liking.
 *
 *
 * ============================================================================
 * Changelog
 * ============================================================================
 *
 * Version 0.91:
 * - Fixed Formation window - it now requires a survivor to go to battle
 *
 * Version 0.90:
 * - Initial release! May want to pretty up the replacement of dead teammates 
 * though.
 */
//=============================================================================

//=============================================================================
// Parameter Variables
//=============================================================================

Yanfly.Parameters = PluginManager.parameters('YEP_X_PartyReplaceOnDeath');
Yanfly.Param = Yanfly.Param || {};
Yanfly.Icon = Yanfly.Icon || {};

Yanfly.Param.ReplaceOnAllDead = String(Yanfly.Parameters['Replace On All Dead']);
Yanfly.Param.ReplaceOnAllDead = eval(Yanfly.Param.ReplaceOnAllDead);
Yanfly.Param.ReplaceWithFormationScreen = String(Yanfly.Parameters['Replace With Formation Screen']);
Yanfly.Param.ReplaceWithFormationScreen = eval(Yanfly.Param.ReplaceWithFormationScreen);
Yanfly.Param.ReplaceOnAllDeadNotification = String(Yanfly.Parameters['Replace On All Dead Notification']);

//=============================================================================
// BattleManager
//=============================================================================

if (Yanfly.Param.ReplaceOnAllDead) {
	Yanfly.Party.BattleManager_checkBattleEnd = BattleManager.checkBattleEnd;
	BattleManager.checkBattleEnd = function() {
		if ($gameParty.isAllDead()) {
			var lockedActors = $gameParty.battleMembers().filter(function(member) {
				return member._locked || member._required;
			});
			//console.log(lockedActors.length.toString() + ' ' + $gameParty.maxBattleMembers().toString() + ' ' + (!$gameParty.isTotallyDead() ? 'alive' : 'dead'));
			// See if we can swap out any battlers and if there is anyone alive to swap them out with.
			if (lockedActors.length < $gameParty.maxBattleMembers() && !$gameParty.isTotallyDead()) {
					// Reset the cooldown, otherwise no one may be available for exchange.
					$gameSystem.resetBattleFormationCooldown();
					// Battlers can be swapped out.  If allowed to use the Formation window, use it.
					if (Yanfly.Param.ReplaceWithFormationScreen) {					
						BattleManager._bypassMoveToStartLocation = true;
						$gameParty.loadActorImages();
						BattleManager._savedActor = BattleManager.actor();
						$gameSystem.setBattleFormationCooldown();
						Yanfly.Party.SavedBattleBgm = AudioManager.saveBgm();
						Yanfly.Party.SavedBattleBgs = AudioManager.saveBgs();
						SceneManager.push(Scene_Party);
						$gameTemp._partyBattle = true;
						// How do we display a message box saying that we are swapping out actors?
						$gameMessage.add(Yanfly.Param.ReplaceOnAllDeadNotification);
						return false;
					}
					// Otherwise swap out battlers randomly.
					else {
						// How do we display a message box saying that we are swapping out actors?
						$gameMessage.add(Yanfly.Param.ReplaceOnAllDeadNotification);
						var aliveMembers = $gameParty.allAliveMembers();					
						for (var index =0; index < $gameParty.maxBattleMembers(); ++index) {
							if (aliveMembers.length > 0) {
								var battler = $gameParty.battleMembers()[index];
								//console.log(index.toString() + ' ' + aliveMembers.join(',') + ' ' + $gameParty._actors.join(','));
								if (!battler || (!battler._locked && !battler._required)) {
									var volunteerOffset =Math.floor(Math.random()*aliveMembers.length);
									var volunteer = aliveMembers.splice(volunteerOffset,1)[0];
									//console.log('Swapping '+index+' and '+volunteer._actorId);
									$gameParty._battleMembers[index] = volunteer._actorId;
									//console.log($gameParty._actors.join(','));
								}
							}
							else{
								$gameParty._battleMembers[index] = 0;
							}
						}
						$gameParty.rearrangeActors();
						$gamePlayer.refresh();	
						$gameParty.battleMembers().map(function (o){if(o && o.refresh) {o.refresh();}});
					}				
				}
			}
		return Yanfly.Party.BattleManager_checkBattleEnd.call(this);
	};
}; // Yanfly.Param.ReplaceOnAllDead


//=============================================================================
// Game_Party
//=============================================================================

Game_Unit.prototype.allAliveMembers = function() {
    return this.allMembers().filter(function(member) {
        return member.isAlive();
    });
};

Game_Unit.prototype.isTotallyDead = function() {
    return this.allAliveMembers().length === 0;
};

//=============================================================================
// End of File
//=============================================================================