/**

  * vim: set ts=4 :

  * =============================================================================

  * SourceMod Basefuncommands Plugin

  * Provides gravity functionality

  *

  * SourceMod (C)2004-2008 AlliedModders LLC.  All rights reserved.

  * =============================================================================

  *

  * This program is free software; you can redistribute it and/or modify it under

  * the terms of the GNU General Public License, version 3.0, as published by the

  * Free Software Foundation.

  * 

  * This program is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more

  * details.

  *

  * You should have received a copy of the GNU General Public License along with

  * this program.  If not, see <http://www.gnu.org/licenses/>.

  *

  * As a special exception, AlliedModders LLC gives you permission to link the

  * code of this program (as well as its derivative works) to "Half-Life 2," the

  * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software

  * by the Valve Corporation.  You must obey the GNU General Public License in

  * all respects for all other code used.  Additionally, AlliedModders LLC grants

  * this exception to all derivative works.  AlliedModders LLC defines further

  * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),

  * or <http://www.sourcemod.net/license.php>.

  *

  * Version: $Id$

  */

 new g_GravityTarget[MAXPLAYERS+1];

 PerformGravity(client, target, Float:amount)

 {

 	SetEntityGravity(target, amount);

 	LogAction(client, target, "\"%L\" set gravity on \"%L\" to %d.", client, target, amount);

 }

 public AdminMenu_Gravity(Handle:topmenu, 

 					  TopMenuAction:action,

 					  TopMenuObject:object_id,

 					  param,

 					  String:buffer[],

 					  maxlength)

 {

 	if (action == TopMenuAction_DisplayOption)

 	{

 		Format(buffer, maxlength, "%T", "Gravity player", param);

 	}

 	else if (action == TopMenuAction_SelectOption)

 	{

 		DisplayGravityMenu(param);

 	}

 }

 DisplayGravityMenu(client)

 {

 	new Handle:menu = CreateMenu(MenuHandler_Gravity);

 	decl String:title[100];

 	Format(title, sizeof(title), "%T:", "Gravity player", client);

 	SetMenuTitle(menu, title);

 	SetMenuExitBackButton(menu, true);

 	AddTargetsToMenu(menu, client, true, true);

 	DisplayMenu(menu, client, MENU_TIME_FOREVER);

 }

 DisplayGravityAmountMenu(client)

 {

 	new Handle:menu = CreateMenu(MenuHandler_GravityAmount);

 	decl String:title[100];

 	Format(title, sizeof(title), "%T: %N", "Gravity amount", client, GetClientOfUserId(g_GravityTarget[client]));

 	SetMenuTitle(menu, title);

 	SetMenuExitBackButton(menu, true);

 	AddTranslatedMenuItem(menu, "4.0", "Gravity Very High", client);

 	AddTranslatedMenuItem(menu, "2.0", "Gravity High", client);

 	AddTranslatedMenuItem(menu, "1.0", "Gravity Normal", client);

 	AddTranslatedMenuItem(menu, "0.5", "Gravity Low", client);

 	AddTranslatedMenuItem(menu, "0.1", "Gravity Very Low", client);

 	DisplayMenu(menu, client, MENU_TIME_FOREVER);

 }

 public MenuHandler_Gravity(Handle:menu, MenuAction:action, param1, param2)

 {

 	if (action == MenuAction_End)

 	{

 		CloseHandle(menu);

 	}

 	else if (action == MenuAction_Cancel)

 	{

 		if (param2 == MenuCancel_ExitBack && hTopMenu != INVALID_HANDLE)

 		{

 			DisplayTopMenu(hTopMenu, param1, TopMenuPosition_LastCategory);

 		}

 	}

 	else if (action == MenuAction_Select)

 	{

 		decl String:info[32];

 		new userid, target;

 		GetMenuItem(menu, param2, info, sizeof(info));

 		userid = StringToInt(info);

 		if ((target = GetClientOfUserId(userid)) == 0)

 		{

 			PrintToChat(param1, "[SM] %t", "Player no longer available");

 		}

 		else if (!CanUserTarget(param1, target))

 		{

 			PrintToChat(param1, "[SM] %t", "Unable to target");

 		}

 		else

 		{

 			g_GravityTarget[param1] = userid;

 			DisplayGravityAmountMenu(param1);

 			return;	// Return, because we went to a new menu and don't want the re-draw to occur.

 		}

 		/* Re-draw the menu if they're still valid */

 		if (IsClientInGame(param1) && !IsClientInKickQueue(param1))

 		{

 			DisplayGravityMenu(param1);

 		}

 	}

 	return;

 }

 public MenuHandler_GravityAmount(Handle:menu, MenuAction:action, param1, param2)

 {

 	if (action == MenuAction_End)

 	{

 		CloseHandle(menu);

 	}

 	else if (action == MenuAction_Cancel)

 	{

 		if (param2 == MenuCancel_ExitBack && hTopMenu != INVALID_HANDLE)

 		{

 			DisplayTopMenu(hTopMenu, param1, TopMenuPosition_LastCategory);

 		}

 	}

 	else if (action == MenuAction_Select)

 	{

 		decl String:info[32];

 		new Float:amount, target;

 		GetMenuItem(menu, param2, info, sizeof(info));

 		amount = StringToFloat(info);

 		if ((target = GetClientOfUserId(g_GravityTarget[param1])) == 0)

 		{

 			PrintToChat(param1, "[SM] %t", "Player no longer available");

 		}

 		else if (!CanUserTarget(param1, target))

 		{

 			PrintToChat(param1, "[SM] %t", "Unable to target");

 		}

 		else

 		{

 			new String:name[32];

 			GetClientName(target, name, sizeof(name));

 			PerformGravity(param1, target, amount);

 			ShowActivity2(param1, "[SM] ", "%t", "Set gravity on target", "_s", name, amount);

 		}

 		/* Re-draw the menu if they're still valid */

 		if (IsClientInGame(param1) && !IsClientInKickQueue(param1))

 		{

 			DisplayGravityMenu(param1);

 		}

 	}

 }

 public Action:Command_Gravity(client, args)

 {

 	if (args < 1)

 	{

 		ReplyToCommand(client, "[SM] Usage: sm_gravity <#userid|name> [amount]");

 		return Plugin_Handled;

 	}

 	decl String:arg[65];

 	GetCmdArg(1, arg, sizeof(arg));

 	new Float:amount = 1.0;

 	if (args > 1)

 	{

 		decl String:arg2[20];

 		GetCmdArg(2, arg2, sizeof(arg2));

 		if (StringToFloatEx(arg2, amount) == 0)

 		{

 			ReplyToCommand(client, "[SM] %t", "Invalid Amount");

 			return Plugin_Handled;

 		}

 		if (amount < 0.0)

 		{

 			amount = 0.0;

 		}

 	}

 	decl String:target_name[MAX_TARGET_LENGTH];

 	decl target_list[MAXPLAYERS], target_count, bool:tn_is_ml;

 	if ((target_count = ProcessTargetString(

 			arg,

 			client,

 			target_list,

 			MAXPLAYERS,

 			COMMAND_FILTER_ALIVE,

 			target_name,

 			sizeof(target_name),

 			tn_is_ml)) <= 0)

 	{

 		ReplyToTargetError(client, target_count);

 		return Plugin_Handled;

 	}

 	for (new i = 0; i < target_count; i++)

 	{

 		PerformGravity(client, target_list[i], amount);

 	}

 	if (tn_is_ml)

 	{

 		ShowActivity2(client, "[SM] ", "%t", "Set gravity on target", target_name);

 	}

 	else

 	{

 		ShowActivity2(client, "[SM] ", "%t", "Set gravity on target", "_s", target_name);

 	}

 	return Plugin_Handled;

 }