1 files changed, 99 insertions, 0 deletions
diff --git a/include/ui.h b/include/ui.h
index 2a4994ee..77c27f4a 100644
--- a/include/ui.h
+++ b/include/ui.h
@@ -2,8 +2,107 @@
 #define UI_H
 
 #include "global.h"
+#include "sprite.h"
+
+#define MAX_UI_ELEMENTS 24
+
+typedef enum {
+    UI_ELEMENT_BUTTON_A,
+    UI_ELEMENT_BUTTON_B,
+    UI_ELEMENT_BUTTON_R,
+    UI_ELEMENT_ITEM_A,
+    UI_ELEMENT_ITEM_B,
+    UI_ELEMENT_TEXT_R,
+    UI_ELEMENT_HEART,
+    UI_ELEMENT_EZLONAGSTART,
+    UI_ELEMENT_EZLONAGACTIVE,
+    UI_ELEMENT_TEXT_A,
+    UI_ELEMENT_TEXT_B
+} UIElementType;
+
+/**
+ * @brief Floating UI element
+ */
+typedef struct {
+    u8 used : 1;
+    u8 unk_0_1 : 1;
+    u8 unk_0_2 : 2; // Load data into VRAM? 0: do not load, 1: ready to load 2: loaded
+    u8 unk_0_4 : 4;
+    u8 type;            /**< @see UIElementType */
+    u8 type2;           // Subtype
+    u8 buttonElementId; /**< Id of the button UI element this text is attached to */
+    u8 action;
+    u8 unk_5;
+    u8 unk_6;
+    u8 unk_7;
+    u8 unk_8;
+    u8 unk_9[3];
+    u16 x;
+    u16 y;
+    u8 frameIndex;
+    u8 duration;
+    u8 spriteSettings;
+    u8 frameSettings;
+    Frame* framePtr;
+    u8 unk_18;
+    u8 numTiles;
+    u16 unk_1a; // TODO oam id? VRAM target (element->unk_1a * 0x20 + 0x6010000)
+    u32* firstTile;
+} UIElement;
+
+typedef enum {
+    HUD_HIDE_NONE,
+    HUD_HIDE_1 = 0x1, // A
+    HUD_HIDE_2 = 0x2, // B
+    HUD_HIDE_4 = 0x4, // R
+    HUD_HIDE_8 = 0x8,
+    HUD_HIDE_HEARTS = 0x10,
+    HUD_HIDE_CHARGE_BAR = 0x20,
+    HUD_HIDE_RUPEES = 0x40,
+    HUD_HIDE_KEYS = 0x80,
+
+    HUD_HIDE_ALL = 0xff
+} HUDHideFlags;
+
+typedef struct {
+    u8 unk_0;
+    u8 hideFlags;
+    u8 unk_2;
+    u8 health;
+    u8 maxHealth;
+    u8 unk_5;
+    u8 unk_6;
+    u8 unk_7;
+    u8 unk_8;
+    u8 unk_9;
+    u8 unk_a;
+    u8 unk_b;
+    u8 unk_c;
+    u8 unk_d;
+    u16 rupees;
+    u8 unk_10; // TODO drawing keys dirty flag or something?
+    u8 unk_11;
+    u8 dungeonKeys;
+    s8 unk_13;
+    s8 unk_14;
+    u8 unk_15;
+    u16 buttonX[3]; /**< X coordinates for the button UI elements */
+    u16 buttonY[3]; /**< Y coordinates for the button UI elements */
+    u8 filler22[0x2];
+    u8 ezloNagFuncIndex;
+    u8 filler25[7];
+    u8 rActionInteractObject; // used as R button UI frame index
+    u8 rActionInteractTile;
+    u8 rActionGrabbing;
+    u8 rActionPlayerState; // if not 0, overrides other R actions
+    u8 buttonText[3];
+    u8 unk_33;
+    UIElement elements[MAX_UI_ELEMENTS];
+} HUD;
+extern HUD gHUD;
 
 extern void DrawUIElements(void);
+extern void UpdateUIElements(void);
 extern void CreateUIElement(u32, u32);
 extern void sub_0801C2F0(u32, u32);
 extern void sub_0801C25C(void);