[Feature] Implement options menu and reading/writing values from/to the SRAM (#449)

* background

* Implement Options button

* Update main menu artwork

* add options menu tiles

* prepare options menu handling

* incorporate main menu refactor

* toto

* add all menu interactions

* do not reset selection_x in main_menu

* options struct

* fix rebase from ricfehr3's repo

* Implement high contrast cards

* Save/Load options values to SRAM

* load options on game_init and validate data within the load_options function

* Get changes from ricfehr3's PR

* recover fix for glitched ace

* clang format

* clang format

* clang format

* Save 500B of image data by using only minimal set of tiles instead of keeping final window in source file

* clang format

* clang format

* Implement Options button

* Update main menu artwork

* progress, leaving it alone for now until discussion

* make game_vars an extern

* Move options vars into their own struct

* rollback previous commit

* Implement save validation. Version check to come

* implement data validity + version check for game saves

* clang format

* Save position in rng sequence for consistent run after load

* fix rebase issues

* fix rebase issue

* remove unused/duplicate define

* Oops, made a mistake when testing PR #424

* encode high contrast palette into an image, and load it at game_start

* document save.c/h and correct typos

* correct alignment

* game speed and high contrast buttons working

* small cleanup

* sliders also work again now

* clang format

* Moved balatro_version extern declaration to version.h file

* removed unsused variable

* make showing ROM version a toggle

* move ante, round and money to the GameVariables struct

* Rename SaveCheckInfo struct to SaveHeader for clarity

* Add SaveHeader struct explanation

* clang format

* Revert unnecessary tileset optimization

* SFX now follows the sound volume slider

* clang format

* Music now follows volume slider

* Changed volume slider increment from 5 to 20 to avoid having the music sound too rough under 20% volume

* refactor main_menu.c to use SelectionGrid and Button structs

* clang format

* make a "new" save button so we don't save during the state transition

* clang format

* Reduced state transition flicker by only changing affine background to a different one

* Fix loading game too late in game init sequence

* First batch of suggestions from @MeirGavish

* Remove unnecessary intermediary buffers for high contrast palette swapping

* comment row warp hack for button input

* Add some of Copilot's suggestions

* rename balatro_version into gbalatro_version for rebranding reasons + version display erase screen fix

* remove unnecessary NULL check on `on_selection_changed` method

* implement small game speed arrow buttons animation

* factorize some code

* remove unnecessary data validation in load_game(), since we already checked the header

* Implement @MeirGavish 's suggestion regarding splitting the huge `on_update` function

* clang format

* implement @ricfehr3 's suggestion about keeping last selected button instead of using an obscure `on_boot` boolean

* Apply @ricfehr3's suggestions

* fix clang-format flags

---------

Co-authored-by: MathisMartin31 <mathis.martin31@gmail.com>

include/game.h

@@ -1,6 +1,7 @@
 #ifndef GAME_H
 #define GAME_H
 
+#include "blind.h"
 #include "game/common_ui.h"
 #include "game_variables.h"
 
@@ -13,7 +14,7 @@ extern GameVariables g_game_vars;
 #define MAX_JOKERS_HELD_SIZE 5 // This doesn't account for negatives right now.
 #define MAX_SHOP_JOKERS      2 // TODO: Make this dynamic and allow for other items besides jokers
 #define MAX_SELECTION_SIZE   5
-#define FRAMES(x)            (((x) + game_speed - 1) / game_speed)
+#define FRAMES(x)            (((x) + (g_game_vars.game_speed) - 1) / (g_game_vars.game_speed))
 
 // TODO: Can make these dynamic to support interest-related jokers and vouchers
 #define MAX_INTEREST   5
@@ -123,7 +124,7 @@ typedef struct ContainedHandTypes
 } ContainedHandTypes;
 // clang-format on
 
-typedef void (*GameStateCallback)();
+typedef void (*GameStateCallback)(void);
 
 typedef struct
 {
@@ -158,17 +159,16 @@ int get_num_hands_remaining(void);
 
 u32 get_chips(void);
 void set_chips(u32 new_chips);
-void display_chips();
+void display_chips(void);
 u32 get_mult(void);
 void set_mult(u32 new_mult);
-void display_mult();
-int get_money(void);
-void set_money(int new_money);
-void display_money();
+void display_mult(void);
+void display_money(void);
 void set_retrigger(bool new_retrigger);
+enum BlindType get_current_blind(void);
+enum BlindType get_next_boss_blind(void);
 
-int get_game_speed(void);
-void set_game_speed(int new_game_speed);
+u32 get_rand(void);
 
 // joker specific functions
 bool is_shortcut_joker_active(void);