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Linkgraphs are not colourblind-friendly #9168

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2TallTyler opened this issue May 1, 2021 · 0 comments · Fixed by #9866
Closed

Linkgraphs are not colourblind-friendly #9168

2TallTyler opened this issue May 1, 2021 · 0 comments · Fixed by #9866

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@2TallTyler
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Version of OpenTTD

1.11.1 and earlier.

Expected result

According to the NHS, about 1 in 12 men and 1 in 200 women are red/green colourblind.

The linkgraph colours which show if a route is overloaded, saturated, or unused should use colours which can be easily distinguished.

Actual result

rhd

Linkgraphs use a red-green colour scale. Additionally, the green "saturated" colour matches the temperate grass and is quite difficult to see. This is a separate issue, but is worth considering if we're discussing a colour change.

Steps to reproduce

  1. Start a game with cargo distribution enabled for passengers (symmetric is fine).
  2. Connect two towns with a bus route.
  3. Open the Cargo Flow Legend from the map icon in the main toolbar, and enable Passengers for your company.

Suggested fix

JGRPP includes a setting for alternate colour schemes, including green to blue, grey to red, and greyscale.

I am happy to submit a PR with whatever changes we agree on, whether that's upstreaming the setting with multiple choices from JGRPP or changing to a single different colour scheme. Personally, I like grey to red (below).

grey-red

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