About binding any keys...

[Lovinglife]

...Sup, is it possible to bind a combo of keys?

I need smth like this: key1+key2+key3, server: player pressed combo#1...

I dont need the code, i just need to know if this is possible , and if isn't a way to create it...ofc if u got free time i'll appreciate a lil' help

Regards

Lovinglife

[dzek (varez)]

afaik - not possible.. in normal way..

when i needed that i just made handler of onClientRender event and in that handler i was checking pressed keys, and when both was pressed then .. something

[Antibird]

Since server can't check for the client button state, it's probably better to check for combo client-side and then trigger some server event, or anything. Making a list of combos (key1 + key2 / key2 + key3 + key5 / etc) and bind all keys in the list to a function that checks for other combo keys pressed or not (which are related to the pressed one), this may be something you could use.

[dzek (varez)]

did he or me say anything about server side?

Making a list of combos (key1 + key2 / key2 + key3 + key5 / etc) and bind all keys in the list to a function that checks for other combo keys pressed or not (which are related to the pressed one), this may be something you could use.

this also sounds good..

[Antibird]

I need smth like this: key1+key2+key3, server: player pressed combo#1...

Probably, probably not. Might be just any kind of output of course.

[JasperNL=D]

I don't know if the question is already answered

but i think this will work.

https://wiki.multitheftauto.com/wiki/GetKeyState

it gets the state of a key. So, if you want teh key combination a + b + c, you need to bind c, and getKeyState a and b

bindKey (getLocalPlayer(), "c", "down", function ( player, key, keyState )
if (getKeyState (player,"b") == true) and (getKeyState (player,"a") == true) then
outputChatBox ("Look at me! i've pressed A, B and C in one time!",255,0,0,false)
end
end)
bindKey

I hope it works. I haven't tested it, but I think it will work

Btw, my example is client-side!

Edit: When you do press A and C and after it B, it don't works! C must be pressed at last!

[dzek (varez)]

what a weird methods..

maybe this?

pressingA=false
pressingB=false
pressingC=false
 
function checkCombo()
if (pressingA and pressingB and pressingC) then
-- our action
outputChatBox("magic!")
end
end
 
bindKey("a", "down", function() pressingA=true checkCombo() end)
bindKey("a", "up", function() pressingA=false end)
bindKey("b", "down", function() pressingB=true checkCombo() end)
bindKey("b", "up", function() pressingB=false end)
bindKey("c", "down", function() pressingC=true checkCombo() end)
bindKey("c", "up", function() pressingC=false end)

this is the best way i think, give it a try.

[Lovinglife]

Thanks everyone

varez script is working, ty

1 more question, thx to varez'script i got my combo#1, what if i wanna add infinite combos? i cannot copy the code again in same sheet of work bcuz i'd get problem with the 2 or more "pressing A"

and the "magic" that appears in chat is seen by every person on my server right?

Regards

Lovinglife

[50p]

If you want infinite number of combos then I'd suggest you make a table of all the keys and change its value when key is pressed. Basically, make your own isKeyDown function. Something like this:

local keysList = { "a", "b", "c", "d", "e", "f", } -- etc., list of the keys you want to check
local playerKeyState = { }; -- every player's key state
 
local function changeKeyState( player, key, keyState )
if not playerKeyState[ player ] then
     playerKeyState[ player ] = { }; -- remember to nil this table when player leaves the server!!!
end
  playerKeyState[ player ][ key ] = ( keyState == "down" ) and true or false;
end
 
-- bind the keys for every player online
for i, plr in ipairs( getElementsByType( "player" ) ) do
for j, key in ipairs( keysList ) do
bindKey( plr, key, "both", changeKeyState );
end
end
 
function isKeyDown( player, key )
return ( playerKeyState[ player ] ) and playerKeyState[ player ][ key ] or false;
end

After you've set everything up, you can now use isKeyDown anywhere in your code to check if the specific key is down.

-- for instance:
if isKeyDown( player, "a" ) and isKeyDown( player, "lshift" ) then
-- do something when left shift and a are down
end

Or you can even make an event which will be triggered when a key is down...

-- This is the same function that I showed you above but added triggerEvent
local function changeKeyState( player, key, keyState )
if not playerKeyState[ player ] then
     playerKeyState[ player ] = { }; -- remember to nil this table when player leaves the server!!!
end
  playerKeyState[ player ][ key ] = ( keyState == "down" ) and true or false;
triggerEvent( "onPlayerKeyStateChange", player, key, keyState );
end
 
-- Then you can attach handlers to the event and detect key press
addEvent( "onPlayerKeyStateChange" );
addEventHandler( "onPlayerKeyStateChange", rootElement,
function( key, keyState )
-- 1st way:
if isKeyDown( source, "lshift" ) and ( key == "a" ) and ( keyState == "down" ) then
-- do something here...
end
-- 2nd way:
if isKeyDown( source, "lshift" ) and isKeyDown( source, "a" ) then
-- do something here...
end
end
)

Well, well.. I just gave you entire code for a new function and event that will make your life easier...

Edited July 13, 2010 by Guest

[Lovinglife]

If you want infinite number of combos then I'd suggest you make a table of all the keys and change its value when key is pressed. Basically, make your own isKeyDown function. Something like this:

local keysList = { "a", "b", "c", "d", "e", "f", } -- etc., list of the keys you want to check
local playerKeyState = { }; -- every player's key state
 
local function changeKeyState( player, key, keyState )
if not playerKeyState[ player ] then
     playerKeyState[ player ] = { }; -- remember to nil this table when player leaves the server!!!
end
  playerKeyState[ player ][ key ] = ( keyState == "down" ) and true or false;
end
 
-- bind the keys for every player online
for i, plr in ipairs( getElementByType( "player" ) do
for j, key in ipairs( keysList ) do
bindKey( plr, key, "both", changeKeyState );
end
end
 
function isKeyDown( player, key )
return ( playerKeyState[ player ] ) and playerKeyState[ player ][ key ] or false;
end

After you've set everything up, you can now use isKeyDown anywhere in your code to check if the specific key is down.

-- for instance:
if isKeyDown( player, "a" ) and isKeyDown( player, "lshift" ) then
-- do something when left shift and a are down
end

Or you can even make an event which will be triggered when a key is down...

-- This is the same function that I showed you above but added triggerEvent
local function changeKeyState( player, key, keyState )
if not playerKeyState[ player ] then
     playerKeyState[ player ] = { }; -- remember to nil this table when player leaves the server!!!
end
  playerKeyState[ player ][ key ] = ( keyState == "down" ) and true or false;
triggerEvent( "onPlayerKeyStateChange", player, key, keyState );
end
 
-- Then you can attach handlers to the event and detect key press
addEvent( "onPlayerKeyStateChange" );
addEventHandler( "onPlayerKeyStateChange", rootElement,
function( key, keyState )
-- 1st way:
if isKeyDown( source, "lshift" ) and ( key == "a" ) and ( keyState == "down" ) then
-- do something here...
end
-- 2nd way:
if isKeyDown( source, "lshift" ) and isKeyDown( source, "a" ) then
-- do something here...
end
end
)

Well, well.. I just gave you entire code for a new function and event that will make your life easier...

thanks for you suggestions and help,

i tried to understand ur code....i copied 1st n 2nd piece and put em togethere i get 1 error ...here...

-- bind the keys for every player online

for i, plr in ipairs( getElementByType( "player" ) do <-----(misses 1 ) near do, i added) attempt to call global value "getElementByType" (a nil value)

for j, key in ipairs( keysList ) do

bindKey( plr, key, "both", changeKeyState );

end

end

ç_ç

[50p]

It should be getElementsByType. It's hard to type long code in browser without syntax highlighter. Updated the code in the previous post.

[Lovinglife]

uhm im confused...i tried ur code but nothing happens...i tried a lot of ways (server side, client side its not explained and i dont know), both 1+2 code piece and 3rd but i cannot find a way...

[50p]

Ok. I didn't test the previous code and I found a few "bugs".

Here is the code which I tested and works perfectly (server-side):

local keysList =  { "a", "b", "c", "d", "e", "f", "lshift" } -- etc., list of the keys you want to check
local playerKeyState = { }; -- every player's key state
 
-- bind the keys for every player online
addEventHandler( "onResourceStart", getResourceRootElement(),
function()
for i, plr in ipairs( getElementsByType( "player" ) ) do
		bindPlayerKeysList( plr );
end
end
)
addEventHandler( "onPlayerJoin", getRootElement( ),
function( )
     bindPlayerKeysList( source );
end
)
 
function bindPlayerKeysList( player )
for j, key in ipairs( keysList ) do
bindKey( player, key, "both", changeKeyState );
end
end
 
function isKeyDown( player, key )
return ( playerKeyState[ player ] ) and playerKeyState[ player ][ key ] or false;
end
 
-- This is the same function that I showed you above but added triggerEvent
function changeKeyState( player, key, keyState )
if not playerKeyState[ player ] then
     playerKeyState[ player ] = { }; -- remember to nil this table when player leaves the server!!!
end
  playerKeyState[ player ][ key ] = ( keyState == "down" ) and true or false;
triggerEvent( "onPlayerKeyStateChange", player, key, keyState );
end
 
-- Then you can attach handlers to the event and detect key press
addEvent( "onPlayerKeyStateChange" );
addEventHandler( "onPlayerKeyStateChange", getRootElement(),
function( key, keyState )
-- 1st way:  must hold LSHIFT and then press A
if isKeyDown( source, "lshift" ) and ( key == "a" ) and ( keyState == "down" ) then
outputChatBox( getPlayerName( source ) .. " just hit LSHIFT + A (order: LSHIFT, A)" );
end
-- 2nd way: doesn't have to hold LSHIFT before pressing A
if isKeyDown( source, "lshift" ) and isKeyDown( source, "a" ) then
outputChatBox( getPlayerName( source ) .. " just hit LSHIFT + A (order: doesn't matter)" );
end
end
)

[Lovinglife]

Ok. I didn't test the previous code and I found a few "bugs".

Here is the code which I tested and works perfectly (server-side):

local keysList =  { "a", "b", "c", "d", "e", "f", "lshift" } -- etc., list of the keys you want to check
local playerKeyState = { }; -- every player's key state
 
-- bind the keys for every player online
addEventHandler( "onResourceStart", getResourceRootElement(),
function()
for i, plr in ipairs( getElementsByType( "player" ) ) do
		bindPlayerKeysList( plr );
end
end
)
addEventHandler( "onPlayerJoin", getRootElement( ),
function( )
     bindPlayerKeysList( source );
end
)
 
function bindPlayerKeysList( player )
for j, key in ipairs( keysList ) do
bindKey( player, key, "both", changeKeyState );
end
end
 
function isKeyDown( player, key )
return ( playerKeyState[ player ] ) and playerKeyState[ player ][ key ] or false;
end
 
-- This is the same function that I showed you above but added triggerEvent
function changeKeyState( player, key, keyState )
if not playerKeyState[ player ] then
     playerKeyState[ player ] = { }; -- remember to nil this table when player leaves the server!!!
end
  playerKeyState[ player ][ key ] = ( keyState == "down" ) and true or false;
triggerEvent( "onPlayerKeyStateChange", player, key, keyState );
end
 
-- Then you can attach handlers to the event and detect key press
addEvent( "onPlayerKeyStateChange" );
addEventHandler( "onPlayerKeyStateChange", getRootElement(),
function( key, keyState )
-- 1st way:  must hold LSHIFT and then press A
if isKeyDown( source, "lshift" ) and ( key == "a" ) and ( keyState == "down" ) then
outputChatBox( getPlayerName( source ) .. " just hit LSHIFT + A (order: LSHIFT, A)" );
end
-- 2nd way: doesn't have to hold LSHIFT before pressing A
if isKeyDown( source, "lshift" ) and isKeyDown( source, "a" ) then
outputChatBox( getPlayerName( source ) .. " just hit LSHIFT + A (order: doesn't matter)" );
end
end
)

excellent, thank you very much for your work ^^

just bcuz im curious, why have you been thinking about the "keys order (lshift,a)"?

[50p]

...

excellent, thank you very much for your work ^^

just bcuz im curious, why have you been thinking about the "keys order (lshift,a)"?

Because that's how you use them in most OS'es. You don't press A and then Shift to "Select all" or you don't press S and then Shift to "Save", you hold Shift and then press S.