// Simple speedo by ZeeX, 17/10/2009

#define FILTERSCRIPT

#include <a_samp>
#include "YSI/Core/YSI_bit.own"

#define HUD_UPDATE_TICKS 5

new
	Text:gPlayerHUD[MAX_PLAYERS],
	Bit:gIsHUDShownBit[MAX_PLAYERS / cellbits + 1];


forward Float:GetVehicleSpeed(vehicleid);	

	
public OnPlayerUpdate(playerid)
{
	static
		playerTick[MAX_PLAYERS];
	if (++playerTick[playerid] == HUD_UPDATE_TICKS)
	{
		playerTick[playerid] = 0;
		if (Bit_Get(gIsHUDShownBit, playerid))
		{
			new
				text[8];
			format(text, sizeof(text), "%.0f kmh", 200 * GetVehicleSpeed(GetPlayerVehicleID(playerid)));
			TextDrawSetString(gPlayerHUD[playerid], text);
		}
	}	
	return 1;
}

public OnFilterScriptInit()
{	
	for (new i; i < MAX_PLAYERS; i++)
	{
	    if (IsPlayerConnected(i) && !IsPlayerNPC(i))
	    {
	    	CreatePlayerHUD(i);
			ShowPlayerHUD(i, (GetPlayerState(i) == PLAYER_STATE_DRIVER));
	    }
	}
	return 1;
}

public OnFilterScriptExit()
{
	for (new i; i < MAX_PLAYERS; i++)
	{
	    if (IsPlayerConnected(i) && !IsPlayerNPC(i))
	    {
	    	DestroyPlayerHUD(i);
	    }
	}
	return 1;
}

public OnPlayerConnect(playerid)
{
	if (!IsPlayerNPC(playerid))
	{
		CreatePlayerHUD(playerid);
	}
	return 1;
}

public OnPlayerDisconnect(playerid, reason)
{
	#pragma unused reason
	if (!IsPlayerNPC(playerid))
	{
        DestroyPlayerHUD(playerid);
	}
	return 1;
}

public OnPlayerStateChange(playerid, newstate, oldstate)
{
	#pragma unused oldstate	
	if (!IsPlayerNPC(playerid))
	{
		ShowPlayerHUD(playerid, (newstate == PLAYER_STATE_DRIVER));	
    }	
	return 1;
}	

CreatePlayerHUD(playerid)
{
    gPlayerHUD[playerid] = TextDrawCreate(620, 410, "0 kmh");
	TextDrawSetProportional(gPlayerHUD[playerid], true);
	TextDrawUseBox(gPlayerHUD[playerid], false);
	TextDrawSetOutline(gPlayerHUD[playerid], 2);
	TextDrawAlignment(gPlayerHUD[playerid], 3);
	TextDrawLetterSize(gPlayerHUD[playerid], 0.7, 2.0);
	TextDrawFont(gPlayerHUD[playerid], 3);
	TextDrawColor(gPlayerHUD[playerid], 0x000000FF);
	TextDrawBackgroundColor(gPlayerHUD[playerid], 0xC71919FF);
	return 1;
}

DestroyPlayerHUD(playerid)
{
    TextDrawHideForPlayer(playerid, gPlayerHUD[playerid]);
	TextDrawDestroy(gPlayerHUD[playerid]);
	return 1;
}

ShowPlayerHUD(playerid, bool:show)
{
	if (show)
	{
		TextDrawShowForPlayer(playerid, gPlayerHUD[playerid]);
	}
	else
	{		
		TextDrawHideForPlayer(playerid, gPlayerHUD[playerid]);
	}
	Bit_Set(gIsHUDShownBit, playerid, show, MAX_PLAYERS);
	return 1;	
}	

Float:GetVehicleSpeed(vehicleid)
{
	new
	    Float:vX,
	    Float:vY,
	    Float:vZ;
	GetVehicleVelocity(vehicleid, vX, vY, vZ);
	return floatsqroot(vX*vX + vY*vY + vZ*vZ);
}