PTR Changelog 2015-11-25
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 This changes are available at the Public Test Realm. Gameplay changes- Introduced new major kind of resource: power. Learn more from this article.
- Introduced new season leaderboard based on power processed by players.
- Introduced new structure: Power Bank.
- Introduced new structure: Power Spawn.
- Introduced new structure: Tower.
- Introduced new structure: Observer.
- Extensions capacity now depends on RCL: 50 capacity at RCL 2-6, 100 capacity at RCL 7, and 200 capacity at RCL 8.
- Reduced extensions quantity available at RCL 7 to 50, at RCL 8 to 60.
- Increased link capacity from 500 to 800.
- Increased links quantity available at RCL 8 from 5 to 6.
 API Changes- Added new constants:
- STRUCTURE_TOWER
- STRUCTURE_OBSERVER
- STRUCTURE_POWER_BANK
- STRUCTURE_POWER_SPAWN
- RESOURCE_ENERGY
- RESOURCE_POWER
 
- Added new method Spawn.renewCreep.
- Added new method Structure.attack(tower only).
- Added new method Structure.heal(tower only).
- Added new method Structure.repair(tower only).
- Added new method Structure.observeRoom(observer only).
- Added new method Structure.processPower(powerSpawn only).
- Added new property Structure.store.power(storage only).
- Added new property Structure.power(powerBank and powerSpawn only).
- Added new property Structure.powerCapacity(powerSpawn only).
- Added new property Creep.carry.power.
- Renamed Energyprototype toResource. Old name is available as an alias.
- Added new property: Resource.resourceType.
- Added new property: Resource.power.
- Renamed FIND_DROPPED_ENERGYconstant toFIND_DROPPED_RESOURCES. Old name is available as an alias.
- Renamed ERR_NOT_ENOUGH_ENERGYconstant toERR_NOT_ENOUGH_RESOURCES. Old name is available as an alias.
 
 
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 I like the gameplay changes, it feels like they streamline the game. 
 
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 - Room.find documentation is missing FIND_DROPPED_RESOURCES
- RoomPosition.lookFor() documentation is missing a way to search for these resources as well.
- Structure's structureType is missing details on all the new types of added structure constants in documentation.
- Controller level document will need to be updated since it's the only place we can see how many of each structure we can build at each controller level. Is there a reason this isn't available in the structure section of the API?
 I don't see any details on how having additional extensions then what is allowed by the above changes is going to be handled. 
 
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 What happens to the extensions we have above 60 when the PTR change is implemented on live? 
 
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 @Vision They will be disabled depending on their distance from the controller in the same way as it works on the PTR. 
 
