basic-user-menu

Basic User Menu

Here the user can use the up and down key to navigate a menu and view new data when selecting menu item with the A button

What's new:

• keysDown() lets you hold down a key and it only registers as one press. Great for menus
• consoleSetWindow() lets you set the window of the console (x, y, width, height)

Understanding the Code

First off we have an array of Menu Items. In this case 4 of them

// list of menu items
struct MenuItem items[] = {
	{"Play", 0},
	{"Load", 1},
	{"Settings", 2},
	{"Credits", 3}
};

Since we will be create the menu via text our init will look like this:

	consoleInit(&consoleSub, 0, BgType_Text4bpp, BgSize_T_256x256, 16, 6, false, true);

Notice the consoleInit(), as it's how you init the text base console. This is typically a lot easier to get text on the screen with.

Next, to move through the menu list we will use the Arrow keys. I've created a method called arrowKeysDownHandler(int keys, int cursorLocation) which takes the current cursor location and the key pressed and relocated the cursor depending on direction.

Controls

• A Button - Select Current Menu Item
• B Button - Return to root of Menu
• UP Button - Move cursor up
• Down Button - Move cursor down