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Surface Tension

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Category: Chapters
"The Dam", Black Mesa's primary source of power.

Contents

  • 1 Chapter Summary
  • 2 Gameplay
  • 3 Media
    • 3.1 Screenshots
    • 3.2 Videos
  • 4 Redesign History
    • 4.1 Level Design
    • 4.2 Environment Elements

Chapter Summary

After returning to the surface, Gordon must fight through hordes of HECU marines and Xenian aliens who are locked in combat with each other. Gordon's destination is the Lambda Complex on the far side of the facility. The chapter's most famous location is the Black Mesa Hydro-Electric Power Facility, more commonly known as “The Dam”.

Surface Tension is the twelfth chapter of Black Mesa.

Gameplay

The chapter features expansive outdoor sections and large-scale firefights as the primary backdrop. In addition to HECU marines, the player also encounters several Apache gunships and tanks that require much heavier firepower to destroy. Several new environmental hazards are introduced, such as minefields and jump platforms.

Currently Surface Tension is the chapter with most load points in the mod: Eight separate levels [4].

Media

Screenshots

Surface Tension map overlay

HECU troops fighting between warehouses.

An open view of the whole dam area.

The entrance to the military-occupied dam.

Outdoor scene. In the second Apache Helicopter encounter.


More

Leaving one of the drainage systems. Featured in the trailer.

Another view of the dam.

A ground view of the dam.

A Panoramic view of Surface Tension's breathtaking vista.

A concrete "bunker", the style of which defined the appearance of many other topside levels throughout the mod.

Weapons storage warehouse.

The drainage hatch control building's interior.

When traveling outside the facility you can meet the saguaro cacti on your way, but you don't get hurt when touching them [1].

The fuel storage area just before the dam.



Videos

 
A preview of Surface Tension's skybox
(Alpha gameplay). 
 
The Official Teaser, that gives a full view of The Dam
at the end.

Redesign History

Level Design

One of the most iconic sequences in the chapter, the Dam, has been vastly updated from its original build in Half-Life. Level designer Spencer Rose headed the dam map, with the goal of creating a level similar to the original, but one that takes advantage of the Source engine's improvements (like Terrain Displacements and far larger maps). Through a series of modifications and revisions the dam has been upgraded to its current scale; three times the size of the original. The actual design of the dam was based off a combination of the Glen Canyon and Hoover dams, as their design and locale fit the setting of Black Mesa. The transition portion at the start and ends of the level, as well as a visual pass, was done by Anthony Stone. The current lighting, sky, and environment settings were setup by Daniel Junek to match the chapter-wide standards. [5]


Redesign Gallery
Below some of the earlier versions of the first Surface Tension level. The largest difference is the change in the level's scale which is easily noticed when examining these early shots of the Dam. The screenshots were taken from extremely early versions of the Surface Tension chapter and are not representative of the quality of the final level included with the mod. The editor shots are provided merely as a supplement and comparison to the current build; they are missing content as a result of changes in the build structure over the course of development, and are obviously not playable in their current state. [6]

First screenshot of the dam.

Deathcam shot from an early multiplayer session on the dam level.

Screenshot from a HDR test; part of a series of screenshots taken for ModDB in 2006. Note both the lack of water and the detail on the turbine buildings which was later removed.

Another screenshot from the HDR test.

An editor screenshot showing the first version of the dam, which is significantly smaller in scale. The center 'tower' on the dam was kept at the same size throughout scale changes on the dam itself. Also of note is the road which leads to the dam and river valley; both were later changed to run perpendicular to the dam face.

Another early editor screenshot showing a smaller road section, larger dam, and early versions of the bunker prefab elements on the dam's left side.

A publically released HDR test shot from December 2006.

An image of the dam from Surface Tension laid bare within the Hammer Editor showing the detailed architecture and terrain displacements before rendering it in the Source Engine.

Drainage hatch control tower, exterior.

Early drainage hatch control building's interior.

Surface tension fuel dump.

Ditto.

Ditto. Note that the area is more open than Half-Life's one.

The powerplant.



Environment Elements

Some props and textures used in the chapter enviroment:


A set of saguaro cactus, made by Jason Wells. They aren't breakable [2] (they could be, but they were designed this way to prevent entdata overheads in the Source Engine's entity limits, spent elsewhere in the map [3]).

The drain consoles. By Mark Foreman.

The drain consoles textures. By Mark Foreman.

One of the many diamond road signs seen in the chapter. By Spencer Rose.


Single-Player
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FAQ  •  Ammo  •  Chapters  •  Characters  •  Enemies  •  Environment  •  Features
Fiction  •  Items  •  Music & Sound  •  Vehicles  •  Voice Acting  •  Weapons
 
Chapters
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Hazard Course  •  Inbound  •  Anomalous Materials  •  Unforeseen Consequences  •  Office Complex We've Got Hostiles  •  Blast Pit  •  Power Up  •  On a Rail  •  Apprehension  •  Residue Processing
Questionable Ethics  •  Surface Tension  •  Forget About Freeman  •  Lambda Core  •  Xen  •  Gonarch's Lair
Interloper  •  Nihilanth (Chapter)  •  End Game
 
Retrieved from "http://wiki.blackmesasource.com/Surface_Tension"
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