Only display 15 nodes in the Recent section of the Create New Node dialog

[Calinou]

This prevents the history size from becoming too large, which made it less useful.

This also fixes an off-by-one error in the completion scoring algorithm.

• This closes 'Recent' panel in 'Create new node' popup is never cleared. #35146.

[akien-mga]

Maybe we should instead limit how many entries get saved in the file? The file will still grow to encompass all nodes in the engine over time, which doesn't seem too useful.

10 might be a bit too restrictive, though I don't use the recent nodes list much myself so I'm not sure how often I would scroll down to pick an 11th or 15th node.

[Calinou]

Maybe we should instead limit how many entries get saved in the file? The file will still grow to encompass all nodes in the engine over time, which doesn't seem too useful.

10 might be a bit too restrictive, though I don't use the recent nodes list much myself so I'm not sure how often I would scroll down to pick an 11th or 15th node.

It turns out there was already a built-in limiting system, but it was set to a very large value (32 items) and had a off-by-one error (which made it limit to 33 items). I've reduced it to 15 items, and also fixed a off-by-one error in the completion scoring system (which used 6 recent items instead of 5).

Here's an example saved list in .godot/editor/create_recent.Node after creating lots of different nodes. This is the whole file with only 15 lines:

AnimationTree
AudioListener3D
TextEdit
AnimatedSprite2D
ParallaxBackground
NavigationAgent2D
NavigationAgent3D
Node
SubViewport
Window
SkeletonIK3D
Node3D
GraphNode
AudioStreamPlayer
Timer

Old entries are discarded as expected.

[YuriSizov]

Thanks!