#include <a_samp>

#define SLOTS 100

enum SavePlayerPosEnum {
Float:LastX,
Float:LastY,
Float:LastZ
}

new SavePlayerPos[SLOTS][SavePlayerPosEnum];
new SpeedMode = 0; // 0 for KPH, 1 for MPH
new UpdateSeconds = 1; //1=jedna sekunda od&#347;wie&#380;anie
new speedtimer;

public OnFilterScriptInit() {
	print("\n----------------------------------");
	print("Filterscript NAZWA sucessfully loaded");
	print("----------------------------------\n");
}

public OnFilterScriptExit() {
	print("\n----------------------------------");
	print("Filterscript NAZWA sucessfully un-loaded");
	print("----------------------------------\n");
}

public OnPlayerCommandText(playerid, cmdtext[]) {

	if (strcmp(cmdtext, "/speed-off", true)==0) {
		KillTimer(speedtimer);
    	return 1;
    }

	if (strcmp(cmdtext, "/speed-on", true)==0) {
		speedtimer = SetTimer("UpdateSpeed", UpdateSeconds*1000, 1);
    	return 1;
    }

	return 0;
}

public OnGameModeInit() {
	speedtimer = SetTimer("UpdateSpeed", UpdateSeconds*1000, 1);
}

public GameModeExitFunc() {
	KillTimer(speedtimer);
}

public UpdateSpeed(){
	new Float:x,Float:y,Float:z;
	new Float:distance,value,string[256];
	for(new i=0; i<SLOTS; i++){
		if(IsPlayerConnected(i) && IsPlayerInAnyVehicle(i)){
			GetPlayerPos(i, x, y, z);
			distance = floatsqroot(floatpower(floatabs(floatsub(x,SavePlayerPos[i][LastX])),2)+floatpower(floatabs(floatsub(y,SavePlayerPos[i][LastY])),2)+floatpower(floatabs(floatsub(z,SavePlayerPos[i][LastZ])),2));
			value = floatround(distance * 3600);
			if(UpdateSeconds > 1){
				value = floatround(value / UpdateSeconds);
			}
			if(SpeedMode){
				format(string,sizeof(string),"~w~%d MPH",floatround(value/1600));
				GameTextForPlayer(i, string, 1100, 5);
			}
			else{
				format(string,sizeof(string),"~n~~n~~n~~n~~n~~n~~n~~w~%d ~r~KM/H",floatround(value/1000));
				GameTextForPlayer(i, string, 1100, 5);
			}
			SavePlayerPos[i][LastX] = x;
			SavePlayerPos[i][LastY] = y;
			SavePlayerPos[i][LastZ] = z;
		}
	}
}