Action Tree

[michaeljb]

• visualize all actions in a tree, like git commits
  • actions will need a new method to return a compact string for the tree
    • might be beneficial to change how broken actions are handled, so the action JSON knows its broken and it can be marked as such in the tree visualization
  • actions on various branch depth are "indented" to show they are branches
• undo actions spins off a branch; undo and redo actions are hidden from the tree visualization
• action tree page will have a selection toolbar
  • when one action is selected, show "review from here" and "undo to here" buttons, like in history view
  • also show new button to add "branch from here" or "premove" or something to enter a new mode (see Idea: OR premoves, like in online speed chess  #56)
• when in new mode, actions still validated by server (will need 'branch' param passed in so server knows which branch to validate, or maybe just param of last action to process) and added to actions list, but users will only see their own such branches
  • from normal mode, can select some premoved actions to "graft" them on to the current mainline branch and apply them now
    • option to hide grafted actions from the tree view
• branch tracking?
  • each action has a branch field now? hopefully something more lightweight can be found
  • each action's parent and children can (should?) be computable
    • messages will need special handling

Benefits

• will help with implementation of premoves
• make undone actions discoverable/reviewable again--useful for debugging, and seeing paths explored by players
• if an action is broken, but a lot of actions have been taken after it, can go back in time to that point, fix the broken action, and then graft on all the actions that followed
• makes going back to change one small thing a turn more feasible--don't need to manually repeat all the actions since then, just graft them

[michaeljb]

see branch action-tree

[michaeljb]

when an action has multiple children, UI to look at history down different paths?