Instead of picking the card with the lowest value we should pick the
card with the highest value for which we know no lower value card is
in play anymore and that someone else still has an even higher value
card.
Problem:
- `static` variables consume memory and sometimes are less
optimizable.
- `static const` variables can be `constexpr`, usually.
- `static` function-local variables require an initialization check
every time the function is run.
Solution:
- If a global `static` variable is only used in a single function then
move it into the function and make it non-`static` and `constexpr`.
- Make all global `static` variables `constexpr` instead of `const`.
- Change function-local `static const[expr]` variables to be just
`constexpr`.
Currently, it is possible for the player to drag an entire stack
of cards to the foundation stack, provided the top card of the stack
(i.e the "root" card) can be dropped onto the foundation stack.
This causes an invalid state where, e.g, red cards end up in a
black foundation stack, or vice versa.
- Make the ball chill out a bit by reducing its x velocity by 1.
- Make the AI dumber. It now relaxes until the ball is coming towards it
and is in its half of the court.
Just because you're the player, doesn't mean you can cheat ;)
- Limit paddle speed when following mouse cursor.
- Unhide pointer -- can't grab it, can't see when it's about to leave
the window otherwise.
- Add last pointer y position indication for the player paddle.
- Prevent the paddle from following the mouse when Up or Down is being
held (avoid controls fighting).
Begin and end triggers for AI paddle to start moving prevent it from
continually jerking around the ball's position. It still moves in steps
of paddle.speed though, but overall experience is smoother.
Player 1's score used to be score's width offset to the right. Now it's
score_margin away from the divider line, same as player 2's.
Also factored out score margin and increased it from 2px to 5px just
to make it look a little nicer.
Also tweak its text in the settings window to be clearer on what this
check box is doing. Seemed a bit confusing that settings changes
required an extra action to persist.
Currently, each time you open the settings window in 2048, it displays
the default values rather than the current values. This is confusing, so
display the current values instead.
Maximizing the board population still takes priority, but if there are
tile generator "moves" that result in equivalent board population after
a player move, the one with the lowest score is selected.
Make everything signed so that we don't have to deal with silly casting
issues thoughout the Chess code. I am unsure if this affects the chess
AI negatively, it seems just as "intelligent" before and after this
change :^)
This is not only easier to comprehend code-wise and avoids some function
overloads, but also makes resizing the board while preserving game state
*a lot* easier. We now no longer have to allocate a new board on every
resize, we just grow/shrink the individual row vectors.
Also fixes a crash when clicking the board widget outside of the drawn
board area.
While the waste stack and the playable card on top of the waste stack
are collectively referred to as the "waste", it's programatically nice
to separate them to enable 3-card-draw mode. In that mode, the playable
stack will contain 3 cards with a slight x-axis shift, while the waste
stack underneath will remain unshifted. So rather than introducing some
ugly logic to CardStack to handle this, it's more convenient to have a
separate stack on top of the waste stack.
