Surfaces: Difference between revisions

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Each level within the ''Portal'' series consists of '''surfaces'''. Typically, a [[Portals|portal]] can be placed upon any light-colored flat surface, whereas an uneven or dark surface cannot be used in this way. Similarly, the dark metal panels present in ''[[Portal]]'' 's [[Test Chambers]] are present for the express purpose of requiring the player to consider other techniques in order to solve the puzzle(s). In this way, the placement and location of portal-conductive surfaces is a fundamental design choice, and determines the way in which the puzzle(s) need to be solved.  
Each level within the ''Portal'' series consists of '''surfaces'''. Typically, a [[Portals|portal]] can be placed upon any light-colored flat surface, whereas an uneven or dark surface cannot be used in this way. In this way, the placement and location of portal-conductive surfaces is a fundamental design choice, and determines the way in which the puzzle(s) need to be solved.


In some Test Chambers, surfaces are blocked by doors or other obstacles, or must be [[Button|activated]] before a portal can be placed upon them. In ''[[Portal 2]]'', the only way to overcome some puzzles that lack portal-conductive surfaces is through the use of [[Gels]].
In some Test Chambers, surfaces are blocked by doors or other obstacles, or must be [[Button|activated]] before a portal can be placed upon them. In ''[[Portal 2]]'', the only way to overcome some puzzles that lack portal-conductive surfaces is through the use of [[Gels]].
== Appearance ==
=== ''Portal'' ===
[[image:portal1_portal_surface.png|170px|left|border]]
==== Portal-able ====
Portal-able surfaces in ''Portal'' are white plates that seem to be made of some kind of stone. They are easy to tell apart from the dark surfaces where someone cannot shoot a portal at.
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[[image:portal1_no_portal_surface.png|170px|right|border]]
==== Non-portal-able ====
Non-portal-able surfaces in ''Portal'' are made out of dark brown/black metal plates that reflect the light slightly. Valve has chosen this design because in opposite to the portal-able surfaces, the darkness and the shininess are good to make out from a distance, as it is said in the Commentary Mode of ''Portal''.
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=== Portal 2 ===
[[image:portal2_portal_surface.png|170px|left|border]]
==== Portal-able ====
The portal-able surfaces in ''Portal 2'' seem to be the same as in ''Portal'', just a littlebit dirtier. {{spoiler|This could be because [[Aperture Science]] withered in the time between ''Portal'' and ''Portal 2''.}}
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[[image:portal2_no_portal_surface.png|170px|right|border]]
==== Non-portal-able ====
The non-portal-able surfaces in ''Portal 2'' have changed however, they don't have any 3D effect or shininess like the ones in ''Portal''. They have remained dark, however.
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== Gels ==
== Gels ==
{{main|Gels}}
{{main|Gels}}
Introduced in ''Portal 2'', [[Gels]] can be applied on most surfaces in order to modify its attributes.
Introduced in ''Portal 2'', [[Gels]] can be applied on most surfaces in order to modify its attributes. There are 3 Gels which can be applied:


* [[Repulsion Gel]] is a blue gel that bounces a player or object away from the surface.
* [[Repulsion Gel]] is a blue gel that bounces a player or object away from the surface.
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