Main Menu Structure WIP

src/MainMenu.zig

@@ -0,0 +1,58 @@
+const std = @import("std");
+const SDL = @import("sdl2");
+
+const MenuSelection = @import("MenuSelection.zig");
+const MenuTab = @import("MenuTab.zig");
+
+const Self = @This();
+
+tab_list: [2]MenuTab = [2]MenuTab{
+    MenuTab.init("1P", &.{
+        MenuSelection.init("Play", play),
+        MenuSelection.init("Print", print),
+    }),
+    MenuTab.init("Options", &.{
+        MenuSelection.init("Play", play),
+        MenuSelection.init("Print", print),
+    }),
+},
+
+tab: usize = 0,
+selection: usize = 0,
+
+holding_down: bool = false,
+
+pub fn init() Self {
+    return Self{};
+}
+
+pub fn tick(self: *Self) void {
+    var key_state = SDL.SDL_GetKeyboardState(null);
+    if (key_state[SDL.SDL_SCANCODE_DOWN] == 1 and !self.holding_down) {
+        self.holding_down = true;
+        self.actionSelDown();
+    }
+    if (key_state[SDL.SDL_SCANCODE_DOWN] == 0) {
+        self.holding_down = false;
+    }
+    std.debug.print(
+        \\Tab: {s}
+        \\Selection: {s}
+        \\
+            , .{ self.tab_list[self.tab].name, self.tab_list[self.tab].contents[self.selection].name });
+}
+
+fn actionSelDown(self: *Self) void {
+    self.selection += 1;
+    self.selection %= self.tab_list[self.tab].contents.len;
+}
+
+fn play(self: *Self) void {
+    _ = self;
+    std.debug.print("Play", .{});
+}
+
+fn print(self: *Self) void {
+    _ = self;
+    std.debug.print("Print", .{});
+}

src/MenuSelection.zig

@@ -0,0 +1,13 @@
+const MainMenu = @import("MainMenu.zig");
+
+const Self = @This();
+
+name: []const u8,
+action: fn(*MainMenu) void,
+
+pub fn init(name: []const u8, action: fn(*MainMenu) void) Self {
+    return Self {
+        .name = name,
+        .action = action,
+    };
+}

src/MenuTab.zig

@@ -0,0 +1,20 @@
+const std = @import("std");
+
+const MenuSelection = @import("MenuSelection.zig");
+
+const Self = @This();
+
+name: []const u8,
+contents: []MenuSelection,
+contents_buffer: [50]MenuSelection,
+
+pub fn init(name: []const u8, contents: []const MenuSelection) Self {
+    var ret = Self {
+        .name = name,
+        .contents = undefined,
+        .contents_buffer = undefined,
+    };
+    std.mem.copy(MenuSelection, &ret.contents_buffer, contents);
+    ret.contents = ret.contents_buffer[0..contents.len];
+    return ret;
+}

src/main.zig

@@ -2,6 +2,7 @@ const std = @import("std");
 const SDL = @import("sdl2");
 
 const Game = @import("Game.zig");
+const MainMenu = @import("MainMenu.zig");
 
 pub fn main() !void {
     const stderr = std.io.getStdErr();
@@ -27,7 +28,8 @@ pub fn main() !void {
     var renderer = SDL.SDL_CreateRenderer(window, -1, SDL.SDL_RENDERER_PRESENTVSYNC | SDL.SDL_RENDERER_ACCELERATED) orelse return;
     defer _ = SDL.SDL_DestroyRenderer(renderer);
 
-    var game = Game.init(renderer);
+    //var game = Game.init(renderer);
+    var main_menu = MainMenu.init();
 
     _ = SDL.SDL_SetRenderDrawBlendMode(renderer, SDL.SDL_BLENDMODE_BLEND);
 
@@ -42,7 +44,8 @@ pub fn main() !void {
         _ = SDL.SDL_SetRenderDrawColor(renderer, 231, 247, 255, 0xFF);
         _ = SDL.SDL_RenderClear(renderer);
 
-        game.tick();
+        //game.tick();
+        main_menu.tick();
 
         SDL.SDL_RenderPresent(renderer);
     }