SC2Mapster

(Camera Pitch / 90) * Camera Distance = Camera Height

Camera Collision
    Options: Action, Create Thread
    Return Type: (None)
    Parameters
        Player = 0 <Integer>
    Grammar Text: Camera Collision(Player)
    Hint Text: (None)
    Custom Script Code
    Local Variables
        Target Point = No Point <Point>
        Distance Max = 20.0<Real>
        Distance Change = (Distance Max / 40.0) <Real>
        Camera Height = 0.0 <Real>
        Pitch = 0.0 <Real>
        Yaw = 0.0 <Real>
        Temp Distance = Distance Change <Real>
    Actions
        Variable - Set Target Point = (Position of Unit)
        Variable - Set Yaw = (180.0 + (Current camera yaw of Player))
        Variable - Set Pitch = (Current camera pitch of  Player)
        General - If (Conditions) then do (Actions) else do (Actions)
            If
                Pitch > 180.0
            Then
                Variable - Modify Pitch: - 360.0
            Else
        Variable - Modify Pitch: / 90.0
        //The 0.5 is how high off the ground the Cameras Target point is.
        Variable - Set Camera Height = (0.5 + (Ground height at Target Point))
        General - While (Conditions) are true, do (Actions)
            Conditions
                Temp Distance < Distance Max
                //The Or here causes it to collide with non-Pathable terrain but not if theres a cliff below you (note: this WILL collide with the very edge of a cliff at times)
                Or
                    Conditions
                        ((Target Point offset by Temp Distance towards Yaw degrees) is passable) == true
                        (Cliff level of Target Point) > (Cliff level of (Target Point offset by Temp Distance towards Yaw degrees))
                (Camera Height + (Pitch * Temp Distance)) > (0.25 + (Ground height at (Target Point offset by Temp Distance towards Yaw degrees)))
                //The 0.25 added to the ground height is how high off the ground the camera should float (to avoid clipping into foliage etc)
            Actions
                Variable - Modify Temp Distance: + Distance Change
        Camera - Apply camera object Distance (Temp Distance - Distance Change) for player Player over 0.2 seconds with 100% initial velocity and 0% deceleration