[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/sprite.c

@@ -2,6 +2,7 @@
 
 #include "audio_utils.h"
 #include "game.h"
+#include "game_variables.h"
 #include "pool.h"
 #include "soundbank.h"
 #include "util.h"
@@ -209,8 +210,8 @@ void sprite_object_reset_transform(SpriteObject* sprite_object)
 
 void sprite_object_update(SpriteObject* sprite_object)
 {
-    sprite_object->vx += ((sprite_object->tx - sprite_object->x) * get_game_speed()) / 8;
-    sprite_object->vy += ((sprite_object->ty - sprite_object->y) * get_game_speed()) / 8;
+    sprite_object->vx += ((sprite_object->tx - sprite_object->x) * g_game_vars.game_speed) / 8;
+    sprite_object->vy += ((sprite_object->ty - sprite_object->y) * g_game_vars.game_speed) / 8;
 
     // Scale up the card when it's played
     sprite_object->vscale += (sprite_object->tscale - sprite_object->scale) / 8;
@@ -310,7 +311,7 @@ void sprite_object_set_focus(SpriteObject* sprite_object, bool focus)
 
     play_sfx(
         SFX_CARD_FOCUS,
-        MM_BASE_PITCH_RATE + rand() % CARD_FOCUS_SFX_PITCH_OFFSET_RANGE,
+        MM_BASE_PITCH_RATE + get_rand() % CARD_FOCUS_SFX_PITCH_OFFSET_RANGE,
         SFX_DEFAULT_VOLUME
     );
     sprite_object->ty = sprite_object->ty + int2fx((focus ? -1 : 1) * SPRITE_FOCUS_RAISE_PX);