How to reduce entity speed (force)?

[Tomas]

Hi, my entity has a mass of 10 and im trying to move it slow. I use (...if window:KeyDown(Key.W) then self.entity:AddForce(0,0,10,false) end) but entity moves too fast. Reducing force less than 10 will make entity immovable. How i can reduce the speed of entity?

[AggrorJorn]

Are you adding the force in update world or in update physics? In update world you need tot multiplayer with time:getspeed()

[Genebris]

Maybe you want to use SetVelocity? Or you could reduce friction to allow smaller forces.

[Tomas]

Im adding in update physics. I tried friction but cant see any difference between 0 and 1. Tried different values. How i can add velocity? Can you give me example, im not sure how to use it...? Sorry for being newbish...

[Genebris]

http://www.leadwerks.com/werkspace/page/api-reference/_/entity/entitysetvelocity-r822

[Tomas]

This is my code. Entity is not moving at all even with friction 0. Entity has collision box and shape box.

Script.camPos=Vec3()
Script.entPos=Vec3()
Script.camRotation=Vec3()
Script.mouseSensitivity = 15
Script.mouseDifference=Vec2()
Script.mouseOld=Vec2()
Script.currentMousePos=Vec2()
Script.mousepos=Vec2(0,0)
function Script:Start()
local window = Window:GetCurrent()
local context = Context:GetCurrent()

self.camera = Camera:Create()
self:UpdateCamera()
self.entity:SetFriction(1,1)
end
function Script:UpdateCamera()
local context = Context:GetCurrent()
local window = Window:GetCurrent()
self.currentMousePos = window:GetMousePosition()
window:SetMousePosition(Math:Round(context:GetWidth()/2), Math:Round(context:GetHeight()/2))
self.currentMousePos.x = Math:Round(self.currentMousePos.x)
self.currentMousePos.y = Math:Round(self.currentMousePos.y)
self.mouseDifference.x = Math:Curve(self.currentMousePos.x - Math:Round(context:GetWidth()/2),self.mouseDifference.x,3)
self.mouseDifference.y = Math:Curve(self.currentMousePos.y - Math:Round(context:GetHeight()/2),self.mouseDifference.y,3)
self.camRotation.x = Math:Clamp(self.camRotation.x + self.mouseDifference.y / self.mouseSensitivity,-90,90)
self.camRotation.y = self.camRotation.y + (self.mouseDifference.x / self.mouseSensitivity)

self.camera:SetRotation(self.camRotation)
self.entPos=self.entity:GetPosition()
self.camera:SetPosition(self.entPos.x,self.entPos.y+1.8,self.entPos.z)
self.entity:SetRotation(0,self.camRotation.y,0)


end

function Script:UpdateWorld()
self:UpdateCamera()
end
function Script:UpdatePhysics()
--Get the game window
local window = Window:GetCurrent()
self.entity:SetFriction(1,1)
if window:KeyDown(Key.W) then self.entity:SetVelocity(0,0,10,false) end
--if window:KeyDown(Key.W) then self.entity:AddForce(0,0,10,false) end
--if window:KeyDown(Key.A) then self.entity:AddForce(-speed,0,0,false) end
--if window:KeyDown(Key.D) then self.entity:AddForce(speed,0,0,false) end
--if window:KeyDown(Key.S) then self.entity:AddForce(0,0,-speed,false) end
end

[macklebee]

Don't know. Your code worked fine for me. Setting the friction to 0 just made the box slide for a little after the user input was no more. I can set the velocity.z down to 1 and it still moves. Also, using the AddForce.z at 10 works as well when the friction is set to 0. If the friction is set to 1 then just increase the value to overcome the box's mass and gravity. Speaking of which, if the numbers above are not working for you what is your scene's gravity set to? The default is 25.

[Tomas]

Well,i finally got the answer to my problem. Its here http://www.leadwerks.com/werkspace/page/documentation/_/entity/entitysetinput-r706 . Thanks everyone for help. Some physics functions dont work if character controller physics mode is used, but with that function i have what i need. Thanks again