Combine shieldwall static

A prefab located in the Prefabs HL2 folder, containing a standard Combine forcefield gate, preventing the player from proceeding. This shieldwall prefab (unlike combine_shieldwall) can not be toggled off and on, making its build simpler in nature.

This prefab includes the following:

• Two prop_static fence post models.
• A func_illusionary brush with an animated texture, providing a forcefield visual effect.
• A broader brush covered in the playerclip tooltexture that will block the player while still allowing NPCs through.
• Two ambient_generic entities used to play the "idle" and the "touch" sounds.
• A trigger_multiple brush that will detect if the player is deemed touching the force field, and that will trigger the "touch" sound to play if it does.
• A logic_auto that is used to start the ambient_generic playing the idle sound of the field at the spawn of the map. See tip below.
• An enveloping normal brush covered with the skip tooltexture to facilitate grouping, copying and moving this prefab.

Tip:The logic_auto entity isn't really needed. The same function can be achieved if the Start Silent flag of the sound_combineshieldwall_idle1 entity is cleared.

Tip:As it is now, rebels and other NPCs can walk right through this forcefield gate. To let only Combine soldiers (npc_combine_s) through, turn the playerclip brush into a solid func_brush with its NPC class excluded from collisions keyvalue set to "npc_combine_s".