navigation functions

[xtreampb]

So I just frustratingly figured out that if you wrap the entity navigation functions in an if check (in lua) then the actual movement doesn't happen if it results to true. It would be nice to denote this in the API documentation. I'll put a comment in there for future reference.

[Einlander]

Can we see the code that you used to make this happen?

[macklebee]

So I just frustratingly figured out that if you wrap the entity navigation functions in an if check (in lua) then the actual movement doesn't happen if it results to true. It would be nice to denote this in the API documentation. I'll put a comment in there for future reference.

 

Are you sure? because I just used the default example code and used the exact code you said didn't work and the player moved.

window = Window:Create()

context = Context:Create(window)

world = World:Create()

local camera = Camera:Create()

camera:SetRotation(35,0,0)

camera:Move(0,0,-8)

local light = DirectionalLight:Create()

light:SetRotation(35,35,0)

camera:SetDebugNavigationMode(true)

 

local ground = Model:Box(10,1,10)

ground:SetPosition(0,-0.5,0)

ground:SetColor(0.0,0.25,0.0)

local shape = Shape:Box(0,0,0, 0,0,0, 10,1,10)

ground:SetShape(shape)

shape:Release()

 

entity = Model:Box(1,1,3)

entity:SetColor(0.0,0.0,1.0)

entity:SetPosition(0,0.5,0)

local shape = Shape:Box(0,0,0,0,0,0,1,1,3)

entity:SetShape(shape)

shape:Release()

ground:SetNavigationMode(true)

entity:SetNavigationMode(true)

 

world:BuildNavMesh()

 

player = Pivot:Create()

local visiblecapsule = Model:Cylinder(16,player)

visiblecapsule:SetScale(1,2,1)

visiblecapsule:SetPosition(0,1,0)

player:SetPosition(-4,0,0)

player:SetMass(1)

player:SetPhysicsMode(Entity.CharacterPhysics)

 

while window:KeyHit(Key.Escape)==false do

if window:Closed() then break end

 

if player:GoToPoint(4,0,0,1.4,1) then

end

 

Time:Update()

world:Update()

world:Render()

 

context:SetBlendMode(Blend.Alpha)

context:DrawText("NavMode: ".. tostring(entity:GetNavigationMode()),2,2)

context:Sync()

end

 

Also, the example code you posted for Entity:Follow() is the incorrect syntax - so maybe thats why it didn't work?

[Einlander]

The gotopoint function returns weather or not you can reach the point, so you have to actually call the command again to start moving

[macklebee]

The gotopoint function returns weather or not you can reach the point, so you have to actually call the command again to start moving

 

Not from what I am seeing. Just one call to it will make the entity move if the point can actually be reached.

[Einlander]

if player:GoToPoint(x,y,z) then

end

 

This means can the player reach the point, yes or no. It doesn't tell the player to actually go there though.

[macklebee]

if player:GoToPoint(x,y,z) then

end

 

This means can the player reach the point, yes or no. It doesn't tell the player to actually go there though.

Did you actually try the example script i posted? You can even take that code out of the main loop and the player will still move to the point if it can be reached. Whether you think this is wrong is another discussion.

 

You are saying it shouldn't move the entity but only state if the point can be reached and the OP is saying that it should move the entity but doesn't. The example code shows that it does make the player move to the point if reachable even if its in a if/then statement. Unless there is a difference in versions (I am using the beta) that everyone is using and some fundamental thing has changed, then any use of this command that returns true will make the entity move to that point.

[Einlander]

I just re-checked, you are right macklebee. If it is reachable it will move to that point regardless of how it is called. Honestly I think it should not move if you have it in an if then statement, but that's another matter.

[Rick]

Code doesn't really work that way right. The function doesn't know the context in which it's called. You're really asking for a new function like CanMoveToPoint().

[AfterDeath]

Can anyone explain how too make U3D_Mesh move too AINavPoint please; i can't seem too find anything a new person can understand it's getting a lil frustrating they won't let me put AINavPoint into the Target. Thank you in advance.