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Bug #3639

Tech Tree has unselectable options, can also research items without requirements met

Added by sarge21rvb over 9 years ago. Updated almost 8 years ago.

Status:
Closed
Severity:
Normal
Assignee:
-
Category:
Gameplay
Target version:
-
Start date:
12/02/2014
% Done:

100%

Version:
0.25
Platform:
Any
Expansion:
Language:
English (US)
Mod Related:
No
Votes:
Arrow u r green
Arrow d r red

Description

In the tech three, some of the options are grayed out and unselectable until both of its prereqs are met, though most are still viewable. Some options can be claimed with science without the prereqs being met (see screenshot). The parts it offers are all available and don't seem to cause any issues when used. It doesn't seem to be related to the item being grayed out; Nuclear Propulsion was grayed, but one of the bottom ones was not, but still claimable without prereqs.

Version: 0.25.0.642 (Steam)

I've attached a butt-load of info. If you need anything else, let me know.

ksp science bug.png (317 KB) ksp science bug.png sarge21rvb, 12/02/2014 08:38 PM
persistent.sfs (229 KB) persistent.sfs sarge21rvb, 12/02/2014 08:43 PM
output_log.txt (2.37 MB) output_log.txt sarge21rvb, 12/02/2014 08:44 PM
DxDiag.txt (71.4 KB) DxDiag.txt sarge21rvb, 12/02/2014 08:46 PM
4430

Related issues

Has duplicate Kerbal Space Program - Bug #3974: Advanced MetalWorks lists Actuators as a requirement, but doesn't actually require itDuplicate01/17/2015

History

#1 Updated by quietghost over 9 years ago

  • Status changed from New to Not a Bug
  • % Done changed from 0 to 100
  • Platform Any added
  • Platform deleted (Windows)

Ah yes, I fell for the exact same thing when I reported this bug. The game would make you think that you need both prerequisites to research a tech, but alas certain techs only require one of their prerequisites. (See Wiki on techs http://wiki.kerbalspaceprogram.com/wiki/Tech_tree) Perhaps this issue needs to be restated in feedback ;D, I have you covered there.

#2 Updated by sarge21rvb over 9 years ago

Huh, interesting. Thanks for letting me know!

#3 Updated by Squelch over 9 years ago

  • Status changed from Not a Bug to Confirmed
  • % Done changed from 100 to 10

The whole of tier 6 of the tech tree can be researched with only one lower requirement. With the recent changes that 0.90 brings, this becomes more apparent.

This is believed to be a bug, and the status is changed accordingly.

#4 Updated by sal_vager over 8 years ago

  • Status changed from Confirmed to Resolved
  • % Done changed from 10 to 100

The tech tree was revamped for 1.0.5, now all nodes either require any of their prerequisites (if more than one) or all, and this is marked in the R&D screen, the only nodes requiring all prerequisites are nuclear and ion propulsion.

Thanks for the report :)

#5 Updated by TriggerAu almost 8 years ago

  • Status changed from Resolved to Closed

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