Shredder

Shredders are spinning blades in Portal 2 that destroy objects and players dropped into them. They function just like pits and slime, but are factory themed.

Creating Shredders

1. Create a long, thin brush. Tie it to a func_rotating entity with the following settings:

Property Name	Value
Name	shredder1_left_axle
Blocking Damage	500

2. Create another long, thin brush. Tie it to a func_rotating entity with the following settings:

Property Name	Value
Name	shredder1_right_axle
Blocking Damage	500

3. Create a prop_dynamic_override entity with the following settings:

Property Name	Value
Name	shredder1_left
Parent	shredder1_left_axle
World Model	models/props_gameplay/shredder_left_b.mdl

4. Create a prop_dynamic_override entity with the following settings:

Property Name	Value
Name	shredder1_right
Parent	shredder1_right_axle
World Model	models/props_gameplay/shredder_right_b.mdl

5. Position the props so that the teeth interlock and the brush entities are in the center of their respective props.

6. Create a 256x1024x128 brush where things would fall into it. Tie the brush to a trigger_hurt entity with the following settings:

Property Name	Value
Name	shredder1_trigger_hurt
Damage	500
Damage Cap	500
Damage Type	CRUSH

7. Create a brush in front of that brush and tie it to a trigger_multiple entity with the following settings:

Property Name	Value
Name	shredder1_dissolver
Delay Before Reset	5

and the following outputs:

	My Output	Target Entity	Target Input	Parameter	Delay	Only Once
	OnTrigger	!activator	Dissolves		0.00	No

8. Create another brush in front of that brush and tie it to a trigger_multiple entity with the following settings:

Property Name	Value
Name	shredder1_destructor
Delay Before Reset	5

and the following outputs:

	My Output	Target Entity	Target Input	Parameter	Delay	Only Once
	OnTrigger	!activator	SelfDestructImmediately		0.00	No

9. Create a logic_relay with the following settings:

Property Name	Value
Name	shredder1_relay_on

and the following outputs:

	My Output	Target Entity	Target Input	Parameter	Delay	Only Once
	OnTrigger	shredder1_trigger_hurt	Enable		0.00	No
	OnTrigger	shredder1_dissolver	Enable		0.00	No
	OnTrigger	shredder1_destructor	Enable		0.00	No
	OnTrigger	shredder1_axle_left	StartForward		0.00	No
	OnTrigger	shredder1_axle_right	StartForward		0.25	No

10. Create a logic_relay with the following settings:

Property Name	Value
Name	shredder1_relay_off

and the following outputs:

	My Output	Target Entity	Target Input	Parameter	Delay	Only Once
	OnTrigger	shredder1_trigger_hurt	Disable		0.25	No
	OnTrigger	shredder1_dissolver	Disable		0.00	No
	OnTrigger	shredder1_destructor	Disable		0.00	No
	OnTrigger	shredder1_axle_left	Stop		0.00	No
	OnTrigger	shredder1_axle_right	Stop		0.25	No

11. Create a func_instance_io_proxy with the following settings:

Property Name	Value
Name	shredder1_proxy

and the following outputs:

	My Output	Target Entity	Target Input	Parameter	Delay	Only Once
	OnProxyRelay1	shredder1_relay_on	Trigger		0.00	No
	OnProxyRelay2	shredder1_relay_off	Trigger		0.00	No

12. Trigger OnProxyRelay1 on shredder1_proxy to turn the shredder on and OnProxyRelay2 to turn the shredder off.

See also

• Portal 2 Level Creation