[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>

source/joker.c

@@ -1,6 +1,7 @@
 #include "joker.h"
 
 #include "card.h"
+#include "game_variables.h"
 #include "graphic_utils.h"
 #include "joker_gfx.h"
 #include "pool.h"
@@ -271,7 +272,7 @@ bool joker_object_score(
 
     u32 chips = get_chips();
     u32 mult = get_mult();
-    int money = get_money();
+    int money = g_game_vars.money;
 
     if (effect_flags_ret & JOKER_EFFECT_FLAG_RETRIGGER)
     {
@@ -345,7 +346,7 @@ bool joker_object_score(
     // Update values
     set_chips(chips);
     set_mult(mult);
-    set_money(money);
+    g_game_vars.money = money;
 
     // Update displays
     display_chips();
@@ -367,7 +368,7 @@ Sprite* joker_object_get_sprite(JokerObject* joker_object)
 int joker_get_random_rarity()
 {
     int joker_rarity = 0;
-    int rarity_roll = random() % 100;
+    int rarity_roll = get_rand() % 100;
     if (rarity_roll < COMMON_JOKER_CHANCE)
     {
         joker_rarity = COMMON_JOKER;