Interact with world objects

[Slothman]

for those of you running rpg gamemodes, i thought I might show you something. since it is now possible to see world elements with mta, you can now interact with them pretty easily. this is a quick example of how you can make a player sit on a chair or lay on a bed without having to place mta objects or map out the location of mta world items.

This example binds the "b" button to check if a player is looking at a chair or bed (not all chairs are supported, sorry) then puts the player in that chair. This is a crude example because it doesnt test if there is anyone already in the chair, but it shows you what's possible.

I'm not releasing this script because its crude and incomplete, and could probably be made more efficient using tables or something, but It might help someone get started.

client script:

function checkforobject() 
    local x, y, z, lx, ly, lz, roll, fov = getCameraMatrix() 
    local fromX, fromY, fromZ = getElementPosition(getLocalPlayer()) 
    local toX = fromX + (lx - x)*3 
    local toY = fromY + (ly - y)*3 
    local toZ = fromZ + (lz - z)*3 
    local hit, hitX, hitY, hitZ, hitlineElement, normalX, normalY, normalZ, material, lighting, piece, wmid, wmx, wmy, wmz, wmrx, wmry, wmrz   = processLineOfSight(fromX, fromY, fromZ+1, toX, toY, toZ, true, false, false, true, false, false, false, true, getLocalPlayer(), true) 
    if hit then 
        if hitlineElement then 
            ix, iy, iz = getElementPosition(hitlineElement) 
            rx, ry, rz = getElementRotation(hitlineElement) 
            elid = getElementModel(hitlineElement) 
            triggerServerEvent ("onworldItemUsed", getLocalPlayer(), elid, ix, iy, iz, rx, ry, rz ) 
        elseif wmid ~= false then 
            triggerServerEvent ("onworldItemUsed", getLocalPlayer(), wmid, wmx, wmy, wmz, wmrx, wmry, wmrz ) 
        end 
    end 
end 
bindKey ( "b", "down", checkforobject ) 

server script:

addEvent( "onworldItemUsed", true ) 
function usetheitem(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz ) 
    if (wmid) then 
        outputChatBox(wmid) 
    end 
     
    local useditem = getElementData(source, "itembeingused") 
    if isElement(useditem) then 
        setPedAnimation ( source ) 
        setElementData(source, "itembeingused", nil) 
        setElementPosition (source, getElementData(source, "returnx"), getElementData(source, "returny"), getElementData(source, "returnz")) 
        destroyElement(useditem) 
    else 
        local px, py, pz = getElementPosition(source) 
        if wmid == 2291 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, .1, -2.2, 1) --offset will have to be configured for each item 
            setElementRotation(source, 0,0, wmrz-170) -- rotation will have to be configured for each item 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "TATTOOS", "TAT_Sit_Loop_P", -1, false, false, false, true)-- animation will have to be configured for each item 
        elseif wmid == 2343 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, 2, -.7, .5) 
            setElementRotation(source, 0,0, wmrz-90) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "TATTOOS", "TAT_Sit_Loop_P", -1, false, false, false, true) 
        elseif wmid == 2723 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, 0, .5, 1) 
            setElementRotation(source, 0,0, wmrz) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "ped", "SEAT_idle", -1, false, false, false, true) 
        elseif wmid == 2724 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, 0, -.5, .6) 
            setElementRotation(source, 0,0, wmrz-180) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "ped", "SEAT_idle", -1, false, false, false, true) 
        elseif wmid == 2356 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, 0, .7, 1.1) 
            setElementRotation(source, 0,0, wmrz) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "ped", "SEAT_idle", -1, false, false, false, true) 
        elseif wmid == 1761 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, .5, -.7, 1.1) 
            setElementRotation(source, 0,0, wmrz-180) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "ped", "SEAT_idle", -1, false, false, false, true) 
        elseif wmid == 1762 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, .5, -.7, 1.1) 
            setElementRotation(source, 0,0, wmrz-180) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "ped", "SEAT_idle", -1, false, false, false, true) 
        elseif wmid == 2290 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, .5, -.7, 1.1) 
            setElementRotation(source, 0,0, wmrz-180) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "ped", "SEAT_idle", -1, false, false, false, true) 
        elseif wmid == 2124 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, -.5, 0, .3) 
            setElementRotation(source, 0,0, wmrz-270) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "ped", "SEAT_idle", -1, false, false, false, true) 
        elseif wmid == 1708 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, .5, -.7, 1.1) 
            setElementRotation(source, 0,0, wmrz-180) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "ped", "SEAT_idle", -1, false, false, false, true) 
        elseif wmid == 1713 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, .5, -.7, 1.1) 
            setElementRotation(source, 0,0, wmrz-180) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "ped", "SEAT_idle", -1, false, false, false, true) 
        elseif wmid == 1739 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, -.5, 0, .3) 
            setElementRotation(source, 0,0, wmrz-270) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "ped", "SEAT_idle", -1, false, false, false, true) 
        elseif wmid == 2090 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, 2, 2, 1) 
            setElementRotation(source, 0,0, wmrz+90) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "INT_HOUSE", "BED_In_R", -1, false, false, false, true)    
        elseif wmid == 2298 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, 2, 2, 1) 
            setElementRotation(source, 0,0, wmrz+90) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "INT_HOUSE", "BED_In_R", -1, false, false, false, true)    
        elseif wmid == 1798 then 
            setElementData(source, "returnx", px, false) 
            setElementData(source, "returny", py, false) 
            setElementData(source, "returnz", pz, false) 
            local useditemdummy = createObject(wmid, wmx, wmy, wmz, wmrx, wmry, wmrz) 
            setElementData(source, "itembeingused", useditemdummy, false) 
            attachElements(source, useditemdummy, 2, 2, 1) 
            setElementRotation(source, 0,0, wmrz+90) 
            setElementCollisionsEnabled(useditemdummy, false) 
            setElementAlpha(useditemdummy, 0)        
            setPedAnimation ( source, "INT_HOUSE", "BED_In_R", -1, false, false, false, true)    
        end 
    end 
end 
addEventHandler ( "onworldItemUsed", getRootElement(), usetheitem ) 

[Benevolence]

Oh thanks, I will test this but how would I make it so instead of pressing 'b', it would be so people right click on the chair then left click to sit on it?

[Slothman]

i suppose you could create a gui item that pops up when you rightclick on the item, then make clicking the gui item trigger the server event. not a bad idea, but youd want the gui to dissapear after a few seconds, since aiming is usually right cllick, and it could be annoying to have a gui keep popping up.

[Benevolence]

Well GUI isn't needed. On Valhalla RP they have the feature I'm talking about. So obviously it's been possible.

[Slothman]

yeah, there are other ways, that was just a suggestion. does valhalla's script work with placed objects only? hate to think i posted this for no reason.

[Benevolence]

yeah, there are other ways, that was just a suggestion. does valhalla's script work with placed objects only? hate to think i posted this for no reason.

No idea =P. But they have the feature on one type of chair only, and you can't sit on ALL of them I've noticed.

[Slothman]

some chairs and world objects are part of a bigger objects like a building or interior. this wouldnt work for that type, but thankfully most chairs are independent objects.

[Benevolence]

some chairs and world objects are part of a bigger objects like a building or interior. this wouldnt work for that type, but thankfully most chairs are independent objects.

That makes sense. I could never figure out why it was like that...

[Slothman]

rockstar cutting corners. there are ways around this, by keeping a list of coords of different map objects. but that's the whole point of this new feature, if you want to make a vending machine script , you no longer need to know where all the vending machines are

[dragonofdark]

Hum.. I tested your script and I have a Bad Argument @ 'bindKey'

I didn't change anything in it...

[Slothman]

did you make sure you put the client part as a client script in the meta?

[dragonofdark]

Ah shit.. What a bitch I am...

[Plantjen]

Thanks a lot, this has been very useful to me, now I can make my peds sit and interact with objects.

[Plantjen]

I can't quite get it to work though This script should create a ped in the Las Venturas Planning Department that sits in the chair at the front desk. When I run this code, the ped spawns and sits down, but then continuously rotates 180 degrees back and forth. A strange detail is that it only rotates when I move my mouse or press the keyboard, as long as i don't touch both mouse and keyboard, the ped performs its normal animation.

Sidenote:

In my code I'm using a timer, because it doesn't seem to work to set a ped's animation right after creating it. If there's a better way without timer, it would be great if anybody could tell me.

My server code:

  
townhallWorker = createPed ( 17, 359.72, 173.544, 1008.39, 270 ) 
setElementInterior(townhallWorker, 3) 
setElementDimension (townhallWorker, 2) 
setTimer (  
    function() 
        local useditemdummy = createObject(1714, 359.051, 173.585, 1007.38, 0, 0, 90.719604) 
        setElementInterior(useditemdummy, 3) 
        setElementDimension (useditemdummy, 2) 
        setElementData(townhallWorker, "itembeingused", useditemdummy, false) 
        attachElements(townhallWorker, useditemdummy, -0.5, 0, .3) 
        setElementRotation(townhallWorker, 0,0, 270) 
        setElementCollisionsEnabled(useditemdummy, false) 
        setElementAlpha(useditemdummy, 150)    
        setElementFrozen ( townhallWorker, true )        
        setPedAnimation(townhallWorker, "INT_OFFICE", "OFF_Sit_Idle_Loop", -1, false, false, false, true) 
    end 
, 1000, 0 ) 
  

Any help would be greatly appreciated!

Edited January 26, 2012 by Guest

[DutchCaffeine]

i suppose you could create a gui item that pops up when you rightclick on the item, then make clicking the gui item trigger the server event. not a bad idea, but youd want the gui to dissapear after a few seconds, since aiming is usually right cllick, and it could be annoying to have a gui keep popping up.

Well I made something small in addition to your script, my little addition just detects a interactable object and shows a little message on top wich disappears after 5 seconds.

The detection script:

http://pastebin.com/j9QaKKWt

The ui script:

http://pastebin.com/Q7C7UN2e