Refactor/main menu (#416)

* Add basic common_ui background gfx functions * Move game main menu to separate file * clang format * tmp commit basic docs * clang format * scope vars and cleanup * Quick consistency update. Finalize. This branch is based on: https://github.com/GBALATRO/balatro-gba/pull/363 Co-authored-by: emiyl <me@emiyl.com> * Simplify global struct * clang-format * Add clang-format to subdirs * Move timer definitions into their own file * clang-format * Fix action yml * docs * Update for PR * Move game start to a state * Remove lag switch * Remove GameVariables pointer for callbacks * Make game_vars a global * move declaration of game vars in header * Fix multiple game_vars * fix for pr * remove change_background in update again * clang format * Make bgCallbacks table static const --------- Co-authored-by: emiyl <me@emiyl.com>
2026-04-27 20:04:18 -07:00
parent adca0961f5
commit da988ba7f5
9 changed files with 292 additions and 206 deletions
@@ -1,22 +1,32 @@
 #include "game/common_ui.h"

 #include "game.h"
+#include "game/main_menu.h"

 typedef void (*BackgroundRenderCallback)(void);

+static enum BackgroundId background = BG_NONE;
+
 // Map to fill in for refactor
-BackgroundRenderCallback bgCallbacks[] =
-{
+static const BackgroundRenderCallback bgCallbacks[] = {
    [BG_NONE] = NULL,
    [BG_CARD_SELECTING] = NULL,
    [BG_CARD_PLAYING] = NULL,
    [BG_ROUND_END] = NULL,
    [BG_SHOP] = NULL,
    [BG_BLIND_SELECT] = NULL,
-    [BG_MAIN_MENU] = NULL,
+    [BG_MAIN_MENU] = game_main_menu_change_background,
 };

 void change_background(enum BackgroundId id)
 {
+    if (id == BG_MAIN_MENU)
+    {
+        if (id != background)
+        {
+            bgCallbacks[id]();
+        }
+    }
    change_background_legacy(id);
+    background = id;
 }
@@ -0,0 +1,115 @@
+#include "game/main_menu.h"
+
+#include "affine_background.h"
+#include "audio_utils.h"
+#include "background_main_menu_gfx.h"
+#include "button.h"
+#include "card.h"
+#include "game.h"
+#include "game/common_ui.h"
+#include "game_variables.h"
+#include "graphic_utils.h"
+#include "soundbank.h"
+#include "sprite.h"
+
+#include <stdint.h>
+#include <tonc.h>
+#include <tonc_math.h>
+#include <tonc_memdef.h>
+
+static const u32 PLAY_BUTTON_OUTLINE_PID = 2;
+static const u32 PLAY_BUTTON_MAIN_COLOR_PID = 5;
+
+static const u32 IMPLEMENTED_BUTTONS = 1; // Remove this once all buttons are implemented
+static const u32 PLAY_BTN_IDX = 0;
+
+// Pixel sizes
+#define MAIN_MENU_ACE_T_X 88
+#define MAIN_MENU_ACE_T_Y 26
+
+// Main menu sprite - the ace of spades
+static CardObject* main_menu_ace = NULL;
+
+// Current selected button index
+static int selection_x = 0;
+
+void game_main_menu_change_background(void)
+{
+    toggle_windows(false, false);
+
+    tte_erase_screen();
+    GRIT_CPY(pal_bg_mem, background_main_menu_gfxPal);
+    GRIT_CPY(&tile_mem[MAIN_BG_CBB], background_main_menu_gfxTiles);
+    GRIT_CPY(&se_mem[MAIN_BG_SBB], background_main_menu_gfxMap);
+
+    // Disable the button highlight colors
+    memcpy16(&pal_bg_mem[PLAY_BUTTON_OUTLINE_PID], &pal_bg_mem[PLAY_BUTTON_MAIN_COLOR_PID], 1);
+}
+
+void game_main_menu_on_init()
+{
+    affine_background_change_background(AFFINE_BG_MAIN_MENU);
+    change_background(BG_MAIN_MENU);
+    main_menu_ace = card_object_new(card_new(SPADES, ACE));
+    card_object_set_sprite(main_menu_ace, 0);
+    main_menu_ace->sprite_object->sprite->obj->attr0 |= ATTR0_AFF_DBL;
+    main_menu_ace->sprite_object->tx = int2fx(MAIN_MENU_ACE_T_X);
+    main_menu_ace->sprite_object->x = main_menu_ace->sprite_object->tx;
+    main_menu_ace->sprite_object->ty = int2fx(MAIN_MENU_ACE_T_Y);
+    main_menu_ace->sprite_object->y = main_menu_ace->sprite_object->ty;
+    main_menu_ace->sprite_object->tscale = float2fx(0.8f);
+    selection_x = 0;
+}
+
+void game_main_menu_on_update()
+{
+    card_object_update(main_menu_ace);
+    main_menu_ace->sprite_object->trotation = lu_sin((g_game_vars.timer << 8) / 2) / 3;
+    main_menu_ace->sprite_object->rotation = main_menu_ace->sprite_object->trotation;
+
+    // Seed randomization
+    g_game_vars.rng_seed++;
+    // If the keys have changed, make it more pseudo-random
+    if (key_curr_state() != key_prev_state())
+    {
+        g_game_vars.rng_seed *= 2;
+    }
+
+    if (key_hit(KEY_LEFT))
+    {
+        if (selection_x > 0)
+        {
+            selection_x--;
+        }
+    }
+    else if (key_hit(KEY_RIGHT))
+    {
+        if (selection_x < IMPLEMENTED_BUTTONS - 1)
+        {
+            selection_x++;
+        }
+    }
+
+    if (selection_x == PLAY_BTN_IDX)
+    {
+        memset16(&pal_bg_mem[PLAY_BUTTON_OUTLINE_PID], BTN_HIGHLIGHT_COLOR, 1);
+
+        if (key_hit(SELECT_CARD))
+        {
+            play_sfx(SFX_BUTTON, MM_BASE_PITCH_RATE, BUTTON_SFX_VOLUME);
+            game_change_state(GAME_STATE_GAME_START);
+        }
+    }
+    else
+    {
+        memcpy16(&pal_bg_mem[PLAY_BUTTON_OUTLINE_PID], &pal_bg_mem[PLAY_BUTTON_MAIN_COLOR_PID], 1);
+    }
+}
+
+void game_main_menu_on_exit()
+{
+    // Normally I would just cache these and hide/unhide but I didn't feel like dealing with
+    // defining a layer for it
+    card_destroy(&main_menu_ace->card);
+    card_object_destroy(&main_menu_ace);
+}