Initial commit

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/menu.h

@@ -0,0 +1,126 @@
+#pragma once
+
+#include "common.h"
+#include "protocol.h"
+#include "ui.h"
+
+struct Game;
+
+// The menu's frame: a panel (header then body) centred across the top, with the item tabs' hotbars a row under it and
+// the gamepad hints under those.
+constexpr float MENU_TOP = 24;
+constexpr float MENU_WIDTH = 440;
+constexpr float HEADER_HEIGHT = 28;
+constexpr float BODY_HEIGHT = 240;
+constexpr float BAR_SPACING = 12;
+constexpr float BAR_Y = MENU_TOP + HEADER_HEIGHT + BODY_HEIGHT + BAR_SPACING;
+constexpr float HINT_GAP = 3;
+
+enum MenuTab
+{
+    TAB_WEAPONS,
+    TAB_TRINKETS,
+    TAB_PLAY,
+    TAB_CUSTOMIZE,
+    TAB_SETTINGS,
+    TAB_COUNT
+};
+
+enum PlayPage
+{
+    PAGE_MAIN,
+    PAGE_RULES,
+    PAGE_ONLINE,
+    // A lobby's Queue a Game: the rules again, with Host for Play.
+    PAGE_QUEUE
+};
+
+constexpr int ITEM_TABS = TAB_PLAY;
+
+// Where everything in the open menu sits. Rows is how many grid rows fit on screen.
+struct MenuLayout
+{
+    Rect body;
+    Rect description;
+    Rect divider;
+    Rect grid;
+    Rect header;
+    Rect panel;
+    Rect scroll;
+    int columns = 1;
+    int rows = 1;
+};
+
+// The Tab menu. In the sandbox: browse every weapon or trinket, read about it, level it and assign it to hotbar slots,
+// set up and start a game from Play, change your name in Customize, and Settings. In a match: Settings and a Forfeit
+// button (pressed twice), or only the item tabs being chosen from while a round's countdown lets fighters choose
+// them, with a Ready button. On an item tab the hotbars sit under the menu. Play asks the match to start on its next
+// tick (through the input). On a gamepad (or the arrow keys and Enter) the focus moves between widgets, the bumpers
+// switch tabs and B goes back a page or closes the menu.
+class Menu
+{
+public:
+    Page pages[TAB_COUNT];
+    int tab = TAB_WEAPONS;
+    bool isOpen = false;
+    // Whether this tick's Escape went to the menu, so nothing else takes it too.
+    bool isEscapeTaken = false;
+
+    void update(Game& game);
+    void draw(Game& game);
+    void choice_open(Game& game);
+    void online_open();
+    void targets_reset(Game& game);
+    void target_fill(Game& game);
+    bool is_bars_open();
+    Rect slot_rect(bool isTrinket, int index, int count);
+    bool is_choosable(Game& game, bool isTrinket);
+    int target_get(Game& game, bool isTrinket);
+
+private:
+    Page description;
+    int described = -1;
+    // A hotbar slot clicked to read about (its item shown instead of the selection) while still on the tab it was
+    // clicked on, or -1.
+    int pinnedSlot = -1;
+    // Each item tab's target slot: where an item clicked a second time goes.
+    int targets[ITEM_TABS] = {};
+    int pinnedTab = -1;
+    bool isPinnedTrinket = false;
+    bool wasReady = false;
+    int scrolls[ITEM_TABS] = {};
+    int selections[ITEM_TABS] = {};
+    int page = PAGE_MAIN;
+    bool isForfeitArmed = false;
+    bool isMultiplayer = false;
+    // The rules a game queued in a lobby is hosted with (kept apart from this screen's own single player ones).
+    Rules queueRules = rules_get(MODE_DEATHMATCH);
+    // The lobby code typed on the Multiplayer page.
+    char joinCode[LOBBY_CODE_LENGTH + 1] = {};
+    // Which lobby copy button (code or link) was last used, and until when it says so.
+    int copiedButton = -1;
+    Uint64 copiedUntil = 0;
+
+    MenuLayout layout_get();
+    Rect box_rect(int index);
+    int tabs_get(Game& game, int* tabs);
+    int item_count();
+    int row_count();
+    void slot_assign(Game& game, int slot);
+    void slot_clear(Game& game, bool isTrinket, int slot);
+    void loadout_set(Game& game, bool isTrinket, int slot, int item);
+    void item_toggle(Game& game);
+    void level_step(Game& game, int step, Vec2 mouse);
+    void slot_level_step(Game& game, bool isTrinket, int slot, int step);
+    void pad_update(Game& game);
+    void hints_draw(Game& game, MenuLayout& layout);
+    void header_draw(Game& game, MenuLayout& layout);
+    void items_draw(Game& game, MenuLayout& layout);
+    void play_draw(Game& game, MenuLayout& layout);
+    void rules_draw(Game& game, Rect area, Rules& rules, bool isQueue);
+    void online_draw(Game& game, Rect area);
+    void play_button_draw(Game& game, Rect button, bool isQueue);
+    void players_join(Game& game);
+    void sandbox_players_join(Game& game);
+    void crumbs_draw(Game& game, MenuLayout& layout);
+};