Simple Camera Movement in Lua

[Guest Red Ocktober]

i can't even get the camera to move... i mean, this should be a straight forward deal...

 

in blitmax the simplest way is...

   While Not KeyHit(KEY_ESCAPE)
       If KeyDown(KEY_A) turnEntity fw.Main.camera,Vec3(0,1,0)
If KeyDown(KEY_D) turnEntity fw.Main.camera,Vec3(0,-1,0)
If KeyDown(KEY_W) moveEntity fw.Main.camera,Vec3(0,0,.1)

If KeyDown(KEY_Q) moveEntity fw.Main.camera,Vec3(0,.1,0)
If KeyDown(KEY_Z) moveEntity fw.Main.camera,Vec3(0,-.1,0)

fw.Update()
fw.Render()	
Flip(0)

   Wend

 

 

this is what i'm trying in lua...

 

 

while AppTerminate()==0 do

      if KeyDown (KEY_D)==1 then  TurnEntity (camera, Vec3(0,-.1,0)) end 
      if KeyDown (KEY_W)==1 then  MoveEntity (camera, Vec3(0,0,1)) end 
      if KeyDown (KEY_Q)==1 then  MoveEntity (camera, Vec3(0,.1,0)) end 
      if KeyDown (KEY_Z)==1 then  MoveEntity (camera, Vec3(0,-.1,0)) end 

fw:Update()
fw:Render()
Flip(0)

end  

 

can someone please smack me in the head and put me on the right track... thx

 

 

--Mike

[macklebee]

is camera = fw.main.camera?

[Guest Red Ocktober]

yes... yes it is...

 

--Mike

[macklebee]

do you have this in your script?

require("scripts/constants/engine_const")

[Guest Red Ocktober]

no i don't...

 

trying it now...

 

 

where's all this lua info at mack?

 

 

--Mike

[macklebee]

Theres the Getting Started with Lua pdf file thats located on the homepage's tutorial page, and there are the example scripts that come with LE. Those are the best sources of info to learn how to use LE's lua implementation.

[Guest Red Ocktober]

thx Mac... although i had that page open, i glanced right past that requires statement (

 

that seemed to work, but:

 

1- my framerate shot right down to 2 fps

 

2- the example doesn't use require(scripts/constants/engine_const"), but instead uses

require("scripts/constants/keycodes")... i tried both, and both seem to work... do u know what the functional difference is off the top of your head... i'm going to look at both the scripts in a few minutes...

 

 

where would i be without you and MG...

 

thx again...

 

 

--Mike

[macklebee]

1) where are you trying to do this at? in a standalone script or in a game script inside the Editor?

 

2) both have the keycode information, but engine_const has more info for buffers, entities, etc...

 

try this code outside of the editor, by opening up the ScriptEditor located in the SDK directory and press play. works just fine for me...

require("scripts/constants/engine_const")
--Register abstract path
RegisterAbstractPath("")

--Set graphics mode
if Graphics(1024,768)==0 then
Notify("Failed to set graphics mode.",1)
return
end

--Create framewerk object and set it to a global object so other scripts can access it
fw=CreateFramework()
if fw==nil then
Notify("Failed to initialize engine.",1)
return
end
fw.main.camera:SetPositionf(0,0,-2)

light=CreateSpotLight(10)
light:SetRotationf(45,55,0)
light:SetPositionf(5,5,-5)

material=LoadMaterial("abstract::cobblestones.mat")

mesh=CreateCube()
mesh:Paint(material)

ground=CreateCube()
ground:SetScalef(10.0,1.0,10.0)
ground:SetPositionf(0.0,-2.0,0.0)
ground:Paint(material)

light=CreateDirectionalLight()
light:SetRotationf(45,45,45)


while AppTerminate()==0 do

mesh:Turnf(AppSpeed()*0.5,AppSpeed()*0.5,AppSpeed()*0.5)

if KeyDown (KEY_D)==1 then  TurnEntity (fw.main.camera, Vec3(0,-.1,0)) end 
if KeyDown (KEY_A)==1 then  TurnEntity (fw.main.camera, Vec3(0,.1,0)) end 
if KeyDown (KEY_W)==1 then  MoveEntity (fw.main.camera, Vec3(0,0,.1)) end 
if KeyDown (KEY_S)==1 then  MoveEntity (fw.main.camera, Vec3(0,0,-.1)) end
if KeyDown (KEY_Q)==1 then  MoveEntity (fw.main.camera, Vec3(0,.1,0)) end 
if KeyDown (KEY_Z)==1 then  MoveEntity (fw.main.camera, Vec3(0,-.1,0)) end 

fw:Update()
fw:Render()
Flip(0)
end

[Guest Red Ocktober]

1- running from the script ed... running standalone lua things are much better...

 

2- k, makes sense i should us the one with the most stuff declared...

 

josh should put you on the payroll...

 

 

--Mike