View source for Collapsing tower

{{DISPLAYTITLE:collapsing_tower}}

[[File:Prefab collapsing_tower.jpg|thumb|150px|right|The collapsing_tower prefab.]]

A [[prefab]] located in the ''Prefabs HL2'' folder, containing the kind of breakable wooden tower seen along the canals in Half-Life 2.

This prefab includes the following:
* The [[func_physbox]]es that make up the tower. (All are breakable except two metal support struts.)
* An [[npc_metropolice]] standing on top of the tower.
* A [[filter_activator_class]] that prevents the npc_metropolice from breaking the boards he is standing on with his own weight.
* A [[logic_relay]] that is used channel information between a breaking physbox and the other physboxes. (This will limit the I/O traffic  possibilities to just one set.)
* An [[env_physexplosion]] that can optionally be set to be triggered through the logic_relay to make the tower collapse outward.
* A [[prop_physics]] explosive oildrum to facilitate doing damage to the physboxes.

When one of the breakable func_physboxes are broken, it will send a signal to the logic_relay, that in its turn will trigger the collapse of the whole tower by enabling the motion of all its physboxes. The relay will also kill the npc_metropolice as the collapse starts, to turn him into a realistically falling ragdoll.

[[Category:Prefabs]]