Creating rotating panels
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Creating Panels rotate
1. Create a prop_dynamic entity with the following settings:
Property Name Value Name trans_panel Pitch Yaw Roll (X Y Z) 90 0 0
Open model browser and choose following settings:
Property Name Value World Model models/anim_wp/simple_panel_transforms/simple_panel.mdl
Go under "model" tab and select:
Model Value Sequence BindPose
2. Create a block brush(custom size) and align it with the model. Tie it to a func_brush entity with the following settings:
Property Name Value Name trans_brush Parent trans_panel
3. Create a logic_auto entity and set up the output as follows:
My Output Target Entity Target Input Parameter Delay Only Once 
OnMapSpawn trans_brush SetParentAttachmentMaintainOffset panel_attach 0.00 No OnMapSpawn trans_panel SetAnimation BindPose 0.00 No
4. Create a ambient_generic entity with the following settings:
Property Name Value Name trans_sound_end Sound name World.SpeedFlingRotatingPanelStop Volume 2
5. Return to prop_dynamic entity and set up the output as follows:
My Output Target Entity Target Input Parameter Delay Only Once OnAnimationDone trans_sound_end PlaySound 0.00 No
6. Create a prop_button entity and set up the output as follows:
My Output Target Entity Target Input Parameter Delay Only Once OnPressed trans_panel SetAnimation rotate_180 0.00 No OnPressed trans_panel SetAnimation rotate_180_reverse 0.00 No
This will rotate the panel along with brush. Second line will rotate the panel back to normal position after a delay.
set up the output to "fire only once" as follows
My Output Target Entity Target Input Parameter Delay Only Once OnPressed trans_panel rotate_180 panel_attach 0.00 Yes
Instead of prop_button you can also use trigger entity