Creating a moving platform

Introduction

In this tutorial we will be creating a moving platform.

An example map is available for download here.

Creating and setting basic model

You will need one from these models

• This one is bigger: models/props/light_rail_platform.mdl .
• This one is smaller models/props/light_rail_platform_02.mdl .
• After you make decided witch one is better for you, name it platform_model.
• Set its parent to platform_func, we will create it now.

Creating a function

Create brush with dimensions of chosen platform. It’s not necessary, but it will surely work. Tie it to func_door entity by pressing [ctrl + t]. Set it’s variables as follow:

Property Name	Value
Change angles	this is up to you, I’m using: never (fixed orientation)
Change velocity	too, it’s your choise, but: ease in/ease out
First stop target	P1_S1_M
Initial speed	100
Max speed	10 000
Name	platform_func

And, you may set sounds:

Property Name	Value
Start sound	Doors.Move12
Stop sound	Doors.FullClose12

Track

Our platform is using path_track to move, so we have to create some. You can see architecture we we will use. Create path_track entity with this setting:

Property Name	Value
Name	P1_S1_M
New train speed	30
Next stop target	P1_S1_O

Now create another one:

Property Name	Value
Name	P1_S1_O
New train speed	200
Next stop target	P1_S2_I

P1_S2_I:

Property Name	Value
Name	P1_S2_I
New train speed	30
Next stop target	P1_S2_M

P1_S2_M:

Property Name	Value
Name	P1_S2_M
New train speed	30
Next stop target	P1_S2_O

P1_S2_O:

Property Name	Value
Name	P1_S2_O
New train speed	200
Next stop target	P1_S1_I

Move them as you need and check, if they are linked by an yellow line.

Make it nice

Width:64

Width:64

Width:64

Now you have working platform, but we will add few models. That oval-like object is mostly on wall, so it's easy to add it to your map. Second model looks better, you may even add that stand under it. Just align top of P1_Sx_M to top of that model.