Custom Camera Problems.

[HumanExpel]

Alrighty, So I'm in attempts to make an RPG. I'm using an uber simple JASS script for the camera right now and want to customize it and make it, well, more RPG-like.

My current set up only allows zooming, turning and locking onto the character I specify. It does not react to Z-CoOrd changes, which, of coarse, gets annoying when going up a hill and you end up with the camera going through the ground.

Heres the code:

Initialize Camera Code

function InitTrig_InitCamera takes nothing returns nothing
    call CameraSetupApply(gg_cam_Cam, false, false)
    call SetCameraTargetController(gg_unit_Hpal_0000, 0, 0, true)
    set udg_Zoom = GetCameraField(CAMERA_FIELD_TARGET_DISTANCE)
    set udg_Rotation = GetUnitFacing(gg_unit_Hpal_0000)
endfunction

Camera Setup

function Trig_CameraTrigger_Actions takes nothing returns nothing
  if (udg_RightPressed == true) then
    set udg_Rotation = udg_Rotation+10
  endif
  if (udg_LeftPressed == true) then
    set udg_Rotation = udg_Rotation-10
  endif
  if (udg_UpPressed == true) then
    set udg_Zoom = udg_Zoom-50
    if (udg_Zoom < 300) then
      set udg_Zoom = udg_Zoom+50
endif
  endif
  if (udg_DownPressed == true) then
    set udg_Zoom = udg_Zoom+50
    if (udg_Zoom > 850) then
      set udg_Zoom = udg_Zoom-50
endif
  endif
  call SetCameraField(CAMERA_FIELD_ROTATION, udg_Rotation, 0.10)
  call SetCameraField(CAMERA_FIELD_TARGET_DISTANCE, udg_Zoom, 0.10)
endfunction


//===========================================================================
function InitTrig_CameraTrigger takes nothing returns nothing
    set gg_trg_CameraTrigger = CreateTrigger(  )
    call TriggerRegisterTimerEvent(gg_trg_CameraTrigger, 0.10, true)
    call TriggerAddAction( gg_trg_CameraTrigger, function Trig_CameraTrigger_Actions )
endfunction

Those are the two main cameras. I don't really believe I need to include the 8 other codes as all they do is rotate the camera/stop rotating the camera.

Does anyone have any tutorials that help with this, or know how to get the camera to react to the characters z-position? (I'm very new to JASS)

 

[Nestharus]

GetUnitFlyHeight
GetTargetLocationZ or w/e

The target location is the center of the camera. You can get TargetX and TargetY, and if all else fails you can convert those coordinates into a location and retrieve the Z.

You know how to do the rest.

Good luck : )

Btw, TargetLocation will only work on the very center of the player's window, so if you do have it angled away from the ground you are going to have some pretty strange results. Be sure to use basic trig to fix this stuff : ).

 

[HumanExpel]

So basically,
call GetUnitFlyHeight
call GetTargetLocationZ

And set it up that way?

 

[Nestharus]

You forgot GetLocationZ.


If you want to work camera with z coord, you need the z coord locs don't ya?

So use-
Your knowledge of cameras
The z coords
Trigonometry


gg : D

 

[HumanExpel]

Yes, i did. I just found it, actually, in a jass manual I downloaded.

 

[HumanExpel]

eh... every time I try those I get some sort of error. I was wondering if you could give me more of an example for it. Like, what I should try using for the codes (because the manual I have doesn't really tell how to use the codes and, infact, one isn't even listed in there.)

 

[Nestharus]

Well, I haven't worked with cameras in a while : ).


I think the best think I can do is link you to a very popular resource for cameras and GUIs on cameras-

http://www.wc3c.net/showthread.php?t=102351


If you look through that, I'm sure it'll tell you everything you need to know. You might want to even try using it for your RPG (I'm sure it'll be a lot of help).


The native has to do with like EyeSite or something. Look in the Function list and just type Z and it'll list out all of the natives for working with the Z coordinate. You don't even need to do any trig if you use the eyesite z native ; ).

 

[Viikuna]

There is a better camera system called Oppicam in wc3c.net too.

It does camera Z height calculation like this:

  
globals
   location Loc=Location(0.0,0.0) /* This global location is needed, 
   because GetLocationZ is still the only way to get terrain Z height */
endglobals 


      /* We move our location to some point, 
     which terrain height we wanna know */
        call MoveLocation(Loc, newx, newy)

        /* We get the z height of cameras current target position */
        set tarz = GetCameraTargetPositionZ()
        
       /* Here we calculate the new z height and update cameras Z offset */
        call SetCameraField(CAMERA_FIELD_ZOFFSET, GetCameraField(CAMERA_FIELD_ZOFFSET) + GetLocationZ(Loc) + Z_OFFSET + GetUnitFlyHeight(Unit[p]) - tarz, duration)