How to get the player the camera is on?

[Swimer]

I tried to search on the Internet, but nothing happened, because most likely I do not know how to formulate it correctly. How do I send a ray that starts from the camera, with the direction of the camera, and get the player it hits?

[marcelluss]

use the following functions for this:
dxDrawLine, getCameraMatrix

[Swimer]

5 minutes ago, marcelluss said:

use the following functions for this:
dxDrawLine, getCameraMatrix

local w, h = guiGetScreenSize ()
            local tx, ty, tz = getWorldFromScreenPosition ( w/2, h/2, 50 )
            local px, py, pz = getCameraMatrix()
            local hit, x, y, z, elementHit = processLineOfSight ( px, py, pz, tx, ty, tz )
            if hit then
                if elementHit then
                    local xx,yy,zz = getElementPosition(elementHit)
                    local sX, sY = getScreenFromWorldPosition( xx, yy, zz )
                    dxDrawText("G", sX, sY, sX, sY, "red", 5, 5, "default")
                end
            end

I've made a small code from the example, but it doesn't work. What's the matter?

[marcelluss]

2 minutes ago, Swimer said:

local w, h = guiGetScreenSize ()
            local tx, ty, tz = getWorldFromScreenPosition ( w/2, h/2, 50 )
            local px, py, pz = getCameraMatrix()
            local hit, x, y, z, elementHit = processLineOfSight ( px, py, pz, tx, ty, tz )
            if hit then
                if elementHit then
                    local xx,yy,zz = getElementPosition(elementHit)
                    local sX, sY = getScreenFromWorldPosition( xx, yy, zz )
                    dxDrawText("G", sX, sY, sX, sY, "red", 5, 5, "default")
                end
            end

I've made a small code from the example, but it doesn't work. What's the matter?

can I see your full script?

[Swimer]

Just now, marcelluss said:

can I see your full script?

local cursorShowing = false



bindKey("f2", "down", function()
    cursorShowing = not cursorShowing
    showCursor(cursorShowing)
end)

local nameColor = white
local nameSize = 1.2
local nameFont = "pricedown"

addEventHandler( "onClientRender", getRootElement(),
        function( )

            for _, plr in ipairs( getElementsByType( "player" ) ) do
                --    if not (plr == localPlayer) then
                local x, y, z = getPedBonePosition( plr, 8 )
                local sX, sY = getScreenFromWorldPosition( x, y, z )
                if sX then
                    local id = getElementData(plr, "id")
                    local text
                    if id then
                        text ="Player ["..id.."]"
                    else
                        text = "Player"
                    end
                    local leftX = sX- dxGetTextWidth(text, nameSize, nameFont )/2
                    local topY = sY-60
                    local rightX = leftX
                    local buttonY = topY
                    dxDrawText( text, leftX, topY, rightX, buttonY, nameColor, nameSize, nameSize, nameFont, "left", "top", false, false, false, false, false)
                end
                --    end
            end
            local w, h = guiGetScreenSize ()
            local tx, ty, tz = getWorldFromScreenPosition ( w/2, h/2, 50 )
            local px, py, pz = getCameraMatrix()
            local hit, x, y, z, elementHit = processLineOfSight ( px, py, pz, tx, ty, tz )
            if hit then
                if elementHit then
                    local sX, sY = getScreenFromWorldPosition( x, y, z )
                    dxDrawText("G", sX, sY, sX, sY, "red", 5, 5, "default")
                end
            end

        end
)

 

[marcelluss]

local cursorShowing = false



bindKey("f2", "down", function()
    cursorShowing = not cursorShowing
    showCursor(cursorShowing)
end)

local nameColor = white
local nameSize = 1.2
local nameFont = "pricedown"
local ped = createPed(0, 0, 0, 3);

addEventHandler( "onClientRender", getRootElement(),
        function( )

            --for _, plr in ipairs( getElementsByType( "player" ) ) do
                --    if not (plr == localPlayer) then
                local x, y, z = getPedBonePosition( ped, 8 )
                local sX, sY = getScreenFromWorldPosition( x, y, z )
                if sX then
                    --local id = setElementData(plr, "id")
                    local text
                    if id then
                        text ="Player ["..id.."]"
                    else
                        text = "Player"
                    end
                    local leftX = sX- dxGetTextWidth(text, nameSize, nameFont )/2
                    local topY = sY-60
                    local rightX = leftX
                    local buttonY = topY
                    dxDrawText( text, leftX, topY, rightX, buttonY, nameColor, nameSize, nameSize, nameFont, "left", "top", false, false, false, false, false)
                end
                --    end
            --end
            local w, h = guiGetScreenSize ()
            local tx, ty, tz = getWorldFromScreenPosition ( w/2, h/2, 50 )
            local px, py, pz = getCameraMatrix(localPlayer)

            -- test line --
            local line = dxDrawLine3D(px, py, pz, x, y, z)

            local hit, x, y, z, elementHit = processLineOfSight ( px, py, pz, tx, ty, tz )
            if hit then
                if elementHit then
                    local sX, sY = getScreenFromWorldPosition( x, y, z )
                    dxDrawText("G", sX, sY, sX, sY, tocolor(255, 255, 255), 1, "default")
                end
            end

        end
)

If I understood your idea correctly, then here is the script

[Swimer]

17 minutes ago, marcelluss said:

local cursorShowing = false



bindKey("f2", "down", function()
    cursorShowing = not cursorShowing
    showCursor(cursorShowing)
end)

local nameColor = white
local nameSize = 1.2
local nameFont = "pricedown"
local ped = createPed(0, 0, 0, 3);

addEventHandler( "onClientRender", getRootElement(),
        function( )

            --for _, plr in ipairs( getElementsByType( "player" ) ) do
                --    if not (plr == localPlayer) then
                local x, y, z = getPedBonePosition( ped, 8 )
                local sX, sY = getScreenFromWorldPosition( x, y, z )
                if sX then
                    --local id = setElementData(plr, "id")
                    local text
                    if id then
                        text ="Player ["..id.."]"
                    else
                        text = "Player"
                    end
                    local leftX = sX- dxGetTextWidth(text, nameSize, nameFont )/2
                    local topY = sY-60
                    local rightX = leftX
                    local buttonY = topY
                    dxDrawText( text, leftX, topY, rightX, buttonY, nameColor, nameSize, nameSize, nameFont, "left", "top", false, false, false, false, false)
                end
                --    end
            --end
            local w, h = guiGetScreenSize ()
            local tx, ty, tz = getWorldFromScreenPosition ( w/2, h/2, 50 )
            local px, py, pz = getCameraMatrix(localPlayer)

            -- test line --
            local line = dxDrawLine3D(px, py, pz, x, y, z)

            local hit, x, y, z, elementHit = processLineOfSight ( px, py, pz, tx, ty, tz )
            if hit then
                if elementHit then
                    local sX, sY = getScreenFromWorldPosition( x, y, z )
                    dxDrawText("G", sX, sY, sX, sY, tocolor(255, 255, 255), 1, "default")
                end
            end

        end
)

If I understood your idea correctly, then here is the script

You probably misunderstood a little. I want to make a player interaction system, but in your system you just need to refine and make sure that the ray does not touch my player.