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Scaled by wheel area and distance between center of mass and \"center of support\".\r\n* Make non-road surfaces subtract a flat value from vehicle's current velocity, depending on its mass, velocity and mass' distribution over wheels. When balancing, assume that current vehicle calculations were all about vehicles on roads.\r\n* Rewrite boats. Have each boat part provide some amount of maximum weight, if sum of those is below vehicle's weight, let it float, otherwise have it sink. Involve center of mass by scaling down that maximum weight heavily if CoM is not over weighted center of boat parts.\r\n\r\nWould be useful if someone with vehicle physics knowledge could provide some relevant data.\r\nHow do cars behave on roads vs. off roads, how does that change with heavy load, how are trucks different, how easily can a car get clogged down in mud depending on its mass and wheel setup etc.\r\nAlso similar data for boats.","created_at":"2016-02-12T23:53:25Z","updated_at":"2016-02-12T23:53:25Z","closed_at":null,"merged_at":null,"merge_commit_sha":null,"assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/CleverRaven/Cataclysm-DDA/pulls/15364/commits","review_comments_url":"https://api.github.com/repos/CleverRaven/Cataclysm-DDA/pulls/15364/comments","review_comment_url":"https://api.github.com/repos/CleverRaven/Cataclysm-DDA/pulls/comments{/number}","comments_url":"https://api.github.com/repos/CleverRaven/Cataclysm-DDA/issues/15364/comments","statuses_url":"https://api.github.com/repos/CleverRaven/Cataclysm-DDA/statuses/6e8e2192999578312a6118360934f06a1607429e","head":{"label":"Coolthulhu:traction","ref":"traction","sha":"6e8e2192999578312a6118360934f06a1607429e","user":{"login":"Coolthulhu","id":1878860,"avatar_url":"https://avatars.githubusercontent.com/u/1878860?v=3","gravatar_id":"","url":"https://api.github.com/users/Coolthulhu","html_url":"https://github.com/Coolthulhu","followers_url":"https://api.github.com/users/Coolthulhu/followers","following_url":"https://api.github.com/users/Coolthulhu/following{/other_user}","gists_url":"https://api.github.com/users/Coolthulhu/gists{/gist_id}","starred_url":"https://api.github.com/users/Coolthulhu/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Coolthulhu/subscriptions","organizations_url":"https://api.github.com/users/Coolthulhu/orgs","repos_url":"https://api.github.com/users/Coolthulhu/repos","events_url":"https://api.github.com/users/Coolthulhu/events{/privacy}","received_events_url":"https://api.github.com/users/Coolthulhu/received_events","type":"User","site_admin":false},"repo":{"id":23649904,"name":"Cataclysm-DDA","full_name":"Coolthulhu/Cataclysm-DDA","owner":{"login":"Coolthulhu","id":1878860,"avatar_url":"https://avatars.githubusercontent.com/u/1878860?v=3","gravatar_id":"","url":"https://api.github.com/users/Coolthulhu","html_url":"https://github.com/Coolthulhu","followers_url":"https://api.github.com/users/Coolthulhu/followers","following_url":"https://api.github.com/users/Coolthulhu/following{/other_user}","gists_url":"https://api.github.com/users/Coolthulhu/gists{/gist_id}","starred_url":"https://api.github.com/users/Coolthulhu/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Coolthulhu/subscriptions","organizations_url":"https://api.github.com/users/Coolthulhu/orgs","repos_url":"https://api.github.com/users/Coolthulhu/repos","events_url":"https://api.github.com/users/Coolthulhu/events{/privacy}","received_events_url":"https://api.github.com/users/Coolthulhu/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/Coolthulhu/Cataclysm-DDA","description":"Cataclysm - Dark Days Ahead. 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