[Trigger] Following Camera

[MetalWarrior]

Hi there! I'm currently working on a project. And I'd like to ask a question.

You see, each player will control 1 unit. And I'd like the camera to follow the unit from behind, so their vision would be restricted to what the unit see in front of him. I made the camera, they are a little higher over the ground. and they are well oriented. But when I lock the camera to the unit, using the unit's orientation, it just follow it but it don't rotate. So I'm kind of disapointed :/... I tried almost anything I knew but couldn't solve the problem. I oppenned Azeroth Grand Prix by Blizzard to see how the camera follow the cars but couldn't find out. Could you help me plz?

 

[HappyTauren]

This way, camera elevates together with unit, just cnp to blank trigger

function Trig_CameraFollowing_Actions takes nothing returns nothing
    local location l
    local integer i
    set i = 1
    loop
        exitwhen i > 10
        set l = GetUnitLoc(udg_Player[i])
        call SetCameraFieldForPlayer( ConvertedPlayer(i), CAMERA_FIELD_TARGET_DISTANCE, 600.00, 0.10 )
        call SetCameraFieldForPlayer( ConvertedPlayer(i), CAMERA_FIELD_ANGLE_OF_ATTACK, 340.00, 0.10 )
        call SetCameraFieldForPlayer( ConvertedPlayer(i), CAMERA_FIELD_ROTATION, GetUnitFacing(udg_Player[i]), 0.30 )
        call SetCameraFieldForPlayer( ConvertedPlayer(i), CAMERA_FIELD_ZOFFSET, 75 + (GetLocationZ(l) / 2), 0.20 )
        set i = i + 1
    endloop
    call RemoveLocation(l)
    set l = null
endfunction
function InitTrig_CameraFollowing takes nothing returns nothing
    set gg_trg_CameraFollowing = CreateTrigger()
    call TriggerAddAction( gg_trg_CameraFollowing, function Trig_CameraFollowing_Actions )
    call TriggerRegisterTimerEvent(gg_trg_CameraFollowing, 0.1,true) 
endfunction

i know you probbably requested gui, but this works almost same way as gui

 

[MetalWarrior]

Thanks ^.^! I'll try it.

 

[HappyTauren]

note that your unit must be under variable udg_Player[], otherwise mozes samo da se slikas s ovim

 

[DoOs_101]

The problem with is what happens if the terrain field goes up, the unit would be out of camera view... it's the same old typical question of how to change the camera's z height when the terrain height changes...

 

[HappyTauren]

do ya know why i used jass when this could be easily been written in GUI?
becouse i've fixed probled you're talking about

 

[DoOs_101]

call SetCameraFieldForPlayer( ConvertedPlayer(i), CAMERA_FIELD_ZOFFSET, 75 + (GetLocationZ(l) / 2), 0.20 )

Is that what ur talking about? hmmm I dont understand JASS that well, what makes the z offset change?

 

[MetalWarrior]

Well, after many try, and some error of my own, it work! THX ^^

 

[The_wand_mirror]

note that your unit must be under variable udg_Player[], otherwise mozes samo da se slikas s ovim

otherwise WHAT !?!?! mozes samo da se slikas ? .. wtf? ...

But dude you just set the camera to the right distance and stuff and then LOCK it on the unit (i supposed u use variables for that) and then it doesnt work?

 

[HappyTauren]

mozes samo da se slikas ? = serbian fraze, means "wont work"

well, you have to set your unit as variable "udg_Player[1]" and rest so you can use this system, but first you have to lock camera to unit (this is part of huge system, i forgot to add camera locking here XD)

>>But dude you just set the camera to the right distance and stuff and then LOCK it on the unit (i supposed u use variables for that) and then it doesnt work?<<

no, you have to set parameters over time to make this work, just locak camera to unit, cnp this trigger, in variables add unit array "udg_Player" and set unit that is supposed to move to "Player[1]" for single player or "Player" for multiplayer

>>call SetCameraFieldForPlayer( ConvertedPlayer(i), CAMERA_FIELD_ZOFFSET, 75 + (GetLocationZ(l) / 2), 0.20 )

Is that what ur talking about? hmmm I dont understand JASS that well, what makes the z offset change?<<

"z" in math means "height" so it changes (height of camera to height of terrain + 75)

 

[MetalWarrior]

I simply found how to make the camera rotate in GUI. But I didn't encountered the problem you were talking about... Maybe because I didn't tested it on high grounds..,