/**

 * 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;

}