From 164f58aa1ef52b72a56dc561534241f6d5b9d1ee Mon Sep 17 00:00:00 2001
From: cellos51 <creeper521@outlook.com>
Date: Sat, 9 Aug 2025 21:49:37 -0400
Subject: [PATCH] Main menu prototype

---
 graphics/affine_main_menu_background_gfx.grit |   1 +
 graphics/affine_main_menu_background_gfx.png  | Bin 0 -> 5222 bytes
 graphics/background_main_menu_gfx.grit        |   1 +
 graphics/background_main_menu_gfx.png         | Bin 0 -> 8404 bytes
 include/affine_background.h                   |  11 +-
 include/game.h                                |   2 +
 include/graphic_utils.h                       |   6 +
 source/affine_background.c                    |  69 ++++++++---
 source/game.c                                 | 108 +++++++++++++++---
 source/graphic_utils.c                        |  30 +++++
 source/main.c                                 |   2 +-
 11 files changed, 200 insertions(+), 30 deletions(-)
 create mode 100644 graphics/affine_main_menu_background_gfx.grit
 create mode 100644 graphics/affine_main_menu_background_gfx.png
 create mode 100644 graphics/background_main_menu_gfx.grit
 create mode 100644 graphics/background_main_menu_gfx.png

diff --git a/graphics/affine_main_menu_background_gfx.grit b/graphics/affine_main_menu_background_gfx.grit
new file mode 100644
index 0000000..3205289
--- /dev/null
+++ b/graphics/affine_main_menu_background_gfx.grit
@@ -0,0 +1 @@
+-gt -gB8 -mLa -mRa
\ No newline at end of file
diff --git a/graphics/affine_main_menu_background_gfx.png b/graphics/affine_main_menu_background_gfx.png
new file mode 100644
index 0000000000000000000000000000000000000000..74b938aa355d628b5e2e33f682ebf1c7545076fc
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diff --git a/graphics/background_main_menu_gfx.grit b/graphics/background_main_menu_gfx.grit
new file mode 100644
index 0000000..f57bef6
--- /dev/null
+++ b/graphics/background_main_menu_gfx.grit
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/graphics/background_main_menu_gfx.png b/graphics/background_main_menu_gfx.png
new file mode 100644
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HcmV?d00001

diff --git a/include/affine_background.h b/include/affine_background.h
index 8e5f78f..31a5b65 100644
--- a/include/affine_background.h
+++ b/include/affine_background.h
@@ -5,13 +5,20 @@
 
 #include "graphic_utils.h"
 
-#define AFFINE_BG_PAL_LEN 5
-#define AFFINE_BG_PB (PAL_ROW_LEN * 15) // This isn't really a palette bank, just the starting index of the palette
+#define AFFINE_BG_PAL_LEN 16
+#define AFFINE_BG_PB (PAL_ROW_LEN * 10) // This isn't really a palette bank, just the starting index of the palette
+
+enum AffineBackgroundID
+{
+    AFFINE_BG_MAIN_MENU,
+    AFFINE_BG_GAME,
+};
 
 void affine_background_init();
 void affine_background_update();
 void affine_background_set_color(COLOR color);
 // Must be called with an array of size at least  AFFINE_BG_PAL_LEN
 void affine_background_load_palette(const u16 *src);
+void affine_background_change_background(enum AffineBackgroundID new_bg);
 
 #endif // AFFINE_BACKGROUND_H
diff --git a/include/game.h b/include/game.h
index 55e8730..b6063ff 100644
--- a/include/game.h
+++ b/include/game.h
@@ -16,6 +16,7 @@
 #define BG_ID_ROUND_END 3
 #define BG_ID_SHOP 4
 #define BG_ID_BLIND_SELECT 5
+#define BG_ID_MAIN_MENU 6
 
 // Input bindings
 #define SELECT_CARD KEY_A
@@ -26,6 +27,7 @@
 
 enum GameState
 {
+    GAME_MAIN_MENU,
     GAME_PLAYING,
     GAME_ROUND_END,
     GAME_SHOP,
diff --git a/include/graphic_utils.h b/include/graphic_utils.h
index 2e80828..dd90ace 100644
--- a/include/graphic_utils.h
+++ b/include/graphic_utils.h
@@ -138,4 +138,10 @@ void memcpy16_tile8_with_palette_offset(u16* dst, const u16* src, uint hwcount,
  */
 void memcpy32_tile8_with_palette_offset(u32* dst, const u32* src, uint wcount, u8 palette_offset);
 
+/* Toggles the visibility of the window layers.
+ * win0 and win1 are the visibility states for the two windows.
+ * These windows are primarily used for the shadows on held jokers, consumables and cards.
+ */
+void toggle_windows(bool win0, bool win1);
+
 #endif //GRAPHIC_UTILS_H
diff --git a/source/affine_background.c b/source/affine_background.c
index f9e15e7..b61be78 100644
--- a/source/affine_background.c
+++ b/source/affine_background.c
@@ -1,16 +1,17 @@
 #include "affine_background.h"
 #include "affine_background_gfx.h"
+#include "affine_main_menu_background_gfx.h"
 
 #include "graphic_utils.h"
 
 BG_AFFINE bgaff;
-AFF_SRC_EX asx = {32<<8, 64<<8, 120, 80, 0x0100, 0x0100, 0};
+AFF_SRC_EX asx = {0};
+
+enum AffineBackgroundID background = AFFINE_BG_MAIN_MENU;
 
 void affine_background_init()
-{
-    memcpy32_tile8_with_palette_offset((u32*)&tile8_mem[AFFINE_BG_CBB], (const u32*)affine_background_gfxTiles, affine_background_gfxTilesLen/4, AFFINE_BG_PB);
-    GRIT_CPY(&se_mem[AFFINE_BG_SBB], affine_background_gfxMap);
-    affine_background_load_palette(affine_background_gfxPal);
+{   
+    affine_background_change_background(background);
 
     bgaff = bg_aff_default;
 }
@@ -20,20 +21,37 @@ void affine_background_update()
     static uint timer = 0;
     timer++;
 
-    // These values are not permament, just the current configuration for the affine background
-    asx.tex_x += 5;
-    asx.tex_y += 12;
-    asx.sx = (lu_sin(timer * 100)) >> 8; // Scale the sine value to fit in a s16
-    asx.sx += 256; // Add 256 to the sine value to make it positive
-    asx.sy = (lu_sin(timer * 100 + 0x4000)) >> 8; // Scale the sine value to fit in a s16
-    asx.sy += 256; // Add 256 to the sine value to make it positive
+    switch (background)
+    {
+    case AFFINE_BG_MAIN_MENU:
+        asx.scr_x = SCREEN_WIDTH / 2;
+        asx.scr_y = SCREEN_HEIGHT / 2;
+        asx.tex_x = 16560;
+        asx.tex_y = 14400;
+        asx.sx = 128;
+        asx.sy = 128;
+        asx.alpha = 1000; // This slightly rotates it which increases the percieved resolution of the background
+        break;
+    case AFFINE_BG_GAME:
+        asx.scr_x = 0;
+        asx.scr_y = 0;
+        asx.tex_x += 5;
+        asx.tex_y += 12;
+        asx.sx = (lu_sin(timer * 100)) >> 8; // Scale the sine value to fit in a s16
+        asx.sx += 256; // Add 256 to the sine value to make it positive
+        asx.sy = (lu_sin(timer * 100 + 0x4000)) >> 8; // Scale the sine value to fit in a s16
+        asx.sy += 256; // Add 256 to the sine value to make it positive
+        asx.alpha = 0;
+        break;
+    }
+
     bg_rotscale_ex(&bgaff, &asx);
     REG_BG_AFFINE[2] = bgaff;
 }
 
 void affine_background_set_color(COLOR color)
 {
-    memcpy16(&pal_bg_mem[AFFINE_BG_PB], affine_background_gfxPal, AFFINE_BG_PAL_LEN);
+    memcpy16(&pal_bg_mem[AFFINE_BG_PB], affine_main_menu_background_gfxPal, AFFINE_BG_PAL_LEN);
     for (int i = 0; i < AFFINE_BG_PAL_LEN; i++)
     {
         clr_rgbscale(&pal_bg_mem[AFFINE_BG_PB] + i, &pal_bg_mem[AFFINE_BG_PB] + i, 1, color);
@@ -43,4 +61,29 @@ void affine_background_set_color(COLOR color)
 void affine_background_load_palette(const u16 *src)
 {
     memcpy16(&pal_bg_mem[AFFINE_BG_PB], src, AFFINE_BG_PAL_LEN);
+}
+
+void affine_background_change_background(enum AffineBackgroundID new_bg)
+{
+    background = new_bg;
+    
+    switch (background)
+    {
+    case AFFINE_BG_MAIN_MENU:
+        REG_BG2CNT &= ~BG_AFF_32x32;
+        REG_BG2CNT |= BG_AFF_16x16;
+
+        memcpy32_tile8_with_palette_offset((u32*)&tile8_mem[AFFINE_BG_CBB], (const u32*)affine_main_menu_background_gfxTiles, affine_main_menu_background_gfxTilesLen/4, AFFINE_BG_PB);
+        GRIT_CPY(&se_mem[AFFINE_BG_SBB], affine_main_menu_background_gfxMap);
+        affine_background_load_palette(affine_main_menu_background_gfxPal);
+        break;
+    case AFFINE_BG_GAME:
+        REG_BG2CNT &= ~BG_AFF_16x16;
+        REG_BG2CNT |= BG_AFF_32x32;
+
+        memcpy32_tile8_with_palette_offset((u32*)&tile8_mem[AFFINE_BG_CBB], (const u32*)affine_background_gfxTiles, affine_background_gfxTilesLen/4, AFFINE_BG_PB);
+        GRIT_CPY(&se_mem[AFFINE_BG_SBB], affine_background_gfxMap);
+        affine_background_load_palette(affine_background_gfxPal);
+        break;
+    }
 }
\ No newline at end of file
diff --git a/source/game.c b/source/game.c
index f58d644..9d3d73a 100644
--- a/source/game.c
+++ b/source/game.c
@@ -20,6 +20,8 @@
 #include "background_shop_gfx.h"
 #include "background_blind_select_gfx.h"
 #include "affine_background_gfx.h"
+#include "background_main_menu_gfx.h"
+#include "affine_main_menu_background_gfx.h"
 
 #include "soundbank.h"
 
@@ -33,7 +35,7 @@ static uint timer = 0; // This might already exist in libtonc but idk so i'm jus
 static int game_speed = 1;
 static int background = 0;
 
-static enum GameState game_state = GAME_BLIND_SELECT; // The current game state, this is used to determine what the game is doing at any given time
+static enum GameState game_state = GAME_MAIN_MENU; // The current game state, this is used to determine what the game is doing at any given time
 static enum HandState hand_state = HAND_DRAW;
 static enum PlayState play_state = PLAY_PLAYING;
 static int state = 0; // General state variable, used for switch statements in each game state related function
@@ -241,6 +243,8 @@ static const Rect CASHOUT_RECT              = {88,      72,     UNDEFINED, UNDEF
 static const Rect SHOP_REROLL_RECT          = {88,      96,    UNDEFINED, UNDEFINED };
 
 //TODO: Properly define and use
+#define MAIN_MENU_BUTTONS 4
+
 #define MENU_POP_OUT_ANIM_FRAMES 20
 
 #define SCORED_CARD_TEXT_Y 48
@@ -429,7 +433,8 @@ void change_background(int id)
         }
         else
         {
-            REG_DISPCNT |= DCNT_WIN0; // Enable window 0 to make hand background transparent
+            toggle_windows(true, true); // Enable window 0 for the hand shadow
+            
             // Load the tiles and palette
             // Background
             memcpy(pal_bg_mem, background_gfxPal, 64); // This '64" isn't a specific number, I'm just using it to prevent the text colors from being overridden
@@ -484,16 +489,16 @@ void change_background(int id)
             background = BG_ID_ROUND_END;
         }
 
-        REG_DISPCNT &= ~DCNT_WIN0; // Disable window 0 so it doesn't make the cashout menu transparent
+       toggle_windows(false, true); // Disable window 0 so it doesn't make the cashout menu transparent
 
         main_bg_se_clear_rect(ROUND_END_MENU_RECT);
         tte_erase_rect_wrapper(HAND_SIZE_RECT);
     }
     else if (id == BG_ID_SHOP)
     {
-        REG_DISPCNT &= ~DCNT_WIN0;
+        toggle_windows(false, true);
 
-        memcpy(pal_bg_mem, background_shop_gfxPal, 64);
+        memcpy16(pal_bg_mem, background_shop_gfxPal, 64);
         GRIT_CPY(&tile_mem[MAIN_BG_CBB], background_shop_gfxTiles);
         GRIT_CPY(&se_mem[MAIN_BG_SBB], background_shop_gfxMap);
 
@@ -520,7 +525,7 @@ void change_background(int id)
         sprite_position(blind_select_tokens[BIG_BLIND], 120, default_y);
         sprite_position(blind_select_tokens[BOSS_BLIND], 160, default_y);
 
-        REG_DISPCNT &= ~DCNT_WIN0;
+        toggle_windows(false, true);
 
         memcpy16(pal_bg_mem, background_blind_select_gfxPal, 64);
         GRIT_CPY(&tile_mem[MAIN_BG_CBB], background_blind_select_gfxTiles);
@@ -619,6 +624,21 @@ void change_background(int id)
             }
         }
     }
+    else if (id == BG_ID_MAIN_MENU)
+    {
+        toggle_windows(false, false);
+
+        tte_erase_screen();
+        memcpy16(pal_bg_mem, background_main_menu_gfxPal, PAL_ROW_LEN * 9);
+        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
+        // Select button PID is 5 and the outline is 3
+        memcpy16(&pal_bg_mem[3], &pal_bg_mem[5], 1);
+
+        affine_background_change_background(AFFINE_BG_MAIN_MENU);
+    }
     else
     {
         return; // Invalid background ID
@@ -1015,10 +1035,7 @@ void jokers_avialable_to_shop_init()
 
 void game_init()
 {
-    jokers_avialable_to_shop_init();
-
-    hands = max_hands;
-    discards = max_discards;
+    change_background(BG_ID_MAIN_MENU);
 
     blind_select_tokens[SMALL_BLIND] = blind_token_new(SMALL_BLIND, 8, 18, MAX_SELECTION_SIZE + MAX_HAND_SIZE + 3);
     blind_select_tokens[BIG_BLIND] = blind_token_new(BIG_BLIND, 8, 18, MAX_SELECTION_SIZE + MAX_HAND_SIZE + 4);
@@ -1037,8 +1054,26 @@ void game_init()
             deck_push(card);
         }
     }
+}
 
-    change_background(BG_ID_BLIND_SELECT);
+void game_start()
+{
+    affine_background_change_background(AFFINE_BG_GAME);
+
+    jokers_avialable_to_shop_init();
+
+    hands = max_hands;
+    discards = max_discards;
+
+    // Fill the deck with all the cards. Later on this can be replaced with a more dynamic system that allows for different decks and card types.
+    for (int suit = 0; suit < NUM_SUITS; suit++)
+    {
+        for (int rank = 0; rank < NUM_RANKS; rank++)
+        {
+            Card *card = card_new(suit, rank);
+            deck_push(card);
+        }
+    }
 
     tte_printf("#{P:%d,%d; cx:0xF000}%d/%d", DECK_SIZE_RECT.left, DECK_SIZE_RECT.top, deck_get_size(), deck_get_max_size()); // Deck size/max size
     
@@ -1055,6 +1090,9 @@ void game_init()
     display_money(money); // Set the money display
 
     tte_printf("#{P:%d,%d; cx:0xC000}%d#{cx:0xF000}/%d", ANTE_TEXT_RECT.left, ANTE_TEXT_RECT.top, ante, MAX_ANTE); // Ante
+
+    change_background(BG_ID_BLIND_SELECT);
+    game_set_state(GAME_BLIND_SELECT);
 }
 
 static void game_playing_process_hand_select_input()
@@ -2375,7 +2413,6 @@ static void game_shop_lights_anim_frame()
     memcpy16(&pal_bg_mem[8], &shifted_palette[3], 1);
 }
 
-
 void game_shop()
 {
     change_background(BG_ID_SHOP);
@@ -2473,8 +2510,6 @@ void game_shop()
     }
 }
 
-
-
 void game_blind_select()
 {
     switch (state) // I'm only using magic numbers here for the sake of simplicity since it's just sequential, but you can replace them with named constants or enums if it makes it clearer
@@ -2639,6 +2674,48 @@ void game_blind_select()
     }
 }
 
+void game_main_menu()
+{
+    change_background(BG_ID_MAIN_MENU);
+
+    if (key_hit(KEY_LEFT))
+    {
+        if (selection_x > 0)
+        {
+            selection_x--;
+        }
+    }
+    else if (key_hit(KEY_RIGHT))
+    {
+        // TODO: Don't allow cursor on sold items
+        if (selection_x < MAIN_MENU_BUTTONS)
+        {
+            selection_x++;
+        }
+        else if (selection_x < MAIN_MENU_BUTTONS)
+        {
+            selection_x++;
+        }
+    }
+    
+    if (selection_x == 0) // Play button
+    {   
+        // Select button PID is 5 and the outline is 3
+        memset16(&pal_bg_mem[3], CLR_WHITE, 1);
+
+        if (key_hit(KEY_A))
+        {
+            // Start the game
+            game_start();
+        }
+    }
+    else
+    {
+        // Select button PID is 5 and the outline is 3
+        memcpy16(&pal_bg_mem[3], &pal_bg_mem[5], 1);
+    }
+}
+
 void game_update()
 {
     timer++;
@@ -2656,6 +2733,9 @@ void game_update()
 
     switch (game_state)
     {
+        case GAME_MAIN_MENU:
+            game_main_menu();
+            break;
         case GAME_PLAYING:
             game_playing();
             break;
diff --git a/source/graphic_utils.c b/source/graphic_utils.c
index b568442..2c64e88 100644
--- a/source/graphic_utils.c
+++ b/source/graphic_utils.c
@@ -186,4 +186,34 @@ void memcpy32_tile8_with_palette_offset(u32* dst, const u32* src, uint wcount, u
         // Copying u8 data 4 times across u32 data
         dst[i] = src[i] + offset;
     }
+}
+
+void toggle_windows(bool win0, bool win1)
+{
+    if (win0)
+    {
+        REG_DISPCNT |= DCNT_WIN0;
+    }
+    else
+    {
+        REG_DISPCNT &= ~DCNT_WIN0;
+    }
+
+    if (win1)
+    {
+        REG_DISPCNT |= DCNT_WIN1;
+    }
+    else
+    {
+        REG_DISPCNT &= ~DCNT_WIN1;
+    }
+
+    if (win0 || win1)
+    {
+        REG_BLDCNT = BLD_BUILD(BLD_BG1, BLD_BG2, 1);
+    }
+    else
+    {
+        REG_BLDCNT = 0;
+    }
 }
\ No newline at end of file
diff --git a/source/main.c b/source/main.c
index 76abc07..bbee8aa 100644
--- a/source/main.c
+++ b/source/main.c
@@ -44,7 +44,7 @@ void init()
     // BG1 is the main background layer
     REG_BG1CNT = BG_PRIO(1) | BG_CBB(MAIN_BG_CBB) | BG_SBB(MAIN_BG_SBB) | BG_8BPP;
 	// BG2 is the affine background layer
-    REG_BG2CNT = BG_PRIO(2) | BG_CBB(AFFINE_BG_CBB) | BG_SBB(AFFINE_BG_CBB) | BG_8BPP | BG_WRAP | BG_AFF_32x32;
+    REG_BG2CNT = BG_PRIO(2) | BG_CBB(AFFINE_BG_CBB) | BG_SBB(AFFINE_BG_CBB) | BG_8BPP | BG_WRAP | BG_AFF_16x16;
 
     int win1_left = 72;
     int win1_top = 44;