Add icons instead of text for input key hint bar

src/samples/ghhb_game.h

@@ -31,16 +31,16 @@ constexpr float MIN_SUSTAIN_FALLBACK_SEC = 0.05f;
 constexpr float MIN_GLYPH_DURATION_SEC = 0.1f;
 
 const int GAMEPAD_BUTTONS[LANE_COUNT] = {
-    GAMEPAD_BUTTON_LEFT_FACE_LEFT, // Left
-    GAMEPAD_BUTTON_LEFT_FACE_UP, // Up
-    GAMEPAD_BUTTON_LEFT_FACE_RIGHT, // Right
-    GAMEPAD_BUTTON_LEFT_FACE_DOWN, // Down
-    GAMEPAD_BUTTON_RIGHT_FACE_LEFT, // X
-    GAMEPAD_BUTTON_RIGHT_FACE_UP, // Y
-    GAMEPAD_BUTTON_RIGHT_FACE_RIGHT, // B
-    GAMEPAD_BUTTON_RIGHT_FACE_DOWN, // A
     GAMEPAD_BUTTON_LEFT_TRIGGER_2, // LT
     GAMEPAD_BUTTON_LEFT_TRIGGER_1, // LB
+    GAMEPAD_BUTTON_LEFT_FACE_LEFT, // Left
+    GAMEPAD_BUTTON_LEFT_FACE_UP, // Up
+    GAMEPAD_BUTTON_LEFT_FACE_DOWN, // Down
+    GAMEPAD_BUTTON_LEFT_FACE_RIGHT, // Right
+    GAMEPAD_BUTTON_RIGHT_FACE_LEFT, // X
+    GAMEPAD_BUTTON_RIGHT_FACE_UP, // Y
+    GAMEPAD_BUTTON_RIGHT_FACE_DOWN, // A
+    GAMEPAD_BUTTON_RIGHT_FACE_RIGHT, // B
     GAMEPAD_BUTTON_RIGHT_TRIGGER_1, // RB
     GAMEPAD_BUTTON_RIGHT_TRIGGER_2, // RT
 };
@@ -49,6 +49,21 @@ const char* const GAMEPAD_BUTTON_LABELS[LANE_COUNT] = {
     "<", "^", ">", "v", "X", "Y", "B", "A", "LT", "LB", "RB", "RT",
 };
 
+const char* const GAMEPAD_BUTTON_ICONS[LANE_COUNT] = {
+    "assets/ui/switch_button_zl.png",
+    "assets/ui/switch_button_l.png",
+    "assets/ui/switch_dpad_left.png",
+    "assets/ui/switch_dpad_up.png",
+    "assets/ui/switch_dpad_down.png",
+    "assets/ui/switch_dpad_right.png",
+    "assets/ui/switch_button_x.png",
+    "assets/ui/switch_button_y.png",
+    "assets/ui/switch_button_a.png",
+    "assets/ui/switch_button_b.png",
+    "assets/ui/switch_button_r.png",
+    "assets/ui/switch_button_zr.png",
+};
+
 constexpr int COMBO_TIER_COUNT = 20;
 constexpr int COMBO_DISPLAY_THRESHOLD = 5;
 constexpr int COMBO_NOTES_PER_TIER = 10;
@@ -59,21 +74,6 @@ const char* const COMBO_TIER_LABELS[COMBO_TIER_COUNT] = {
     "Stellar!", "Legendary!", "Epic!", "Divine!", "Godlike!",
 };
 
-const int KEY_KEYS[LANE_COUNT] = {
-    KEY_Q,
-    KEY_W,
-    KEY_E,
-    KEY_R,
-    KEY_A,
-    KEY_S,
-    KEY_D,
-    KEY_F,
-    KEY_Z,
-    KEY_X,
-    KEY_C,
-    KEY_V,
-};
-
 /* One color per track (track index % MAX_INSTRUMENT_TYPES). */
 const Color INSTRUMENT_COLORS[MAX_INSTRUMENT_TYPES] = {
     {220, 100, 100, 255}, // red
@@ -472,10 +472,6 @@ public:
 
     bool is_lane_pressed(int lane) const
     {
-        if (IsKeyPressed(KEY_KEYS[lane]))
-        {
-            return true;
-        }
         for (int i = 0; i < MAX_GAMEPADS; i++)
         {
             if (IsGamepadAvailable(i) && IsGamepadButtonPressed(i, GAMEPAD_BUTTONS[lane]))
@@ -989,17 +985,17 @@ public:
             }
         }
 
-        const float button_label_font_size = 28.0f;
-        float label_height = MeasureTextEx(font, "X", button_label_font_size, 1).y;
-        float button_label_y = (upper_bar_y + hit_line_y) / 2.0f - label_height / 2.0f;
+        const float button_icon_height = 50.0f;
+        float button_icon_y = (upper_bar_y + hit_line_y) / 2.0f - button_icon_height / 2.0f;
+        auto* tex_svc = get_service<TextureService>();
         for (int lane = 0; lane < LANE_COUNT; lane++)
         {
-            const char* label = GAMEPAD_BUTTON_LABELS[lane];
-            float label_w = MeasureTextEx(font, label, button_label_font_size, 1).x;
+            Texture2D& tex = tex_svc->get_texture(GAMEPAD_BUTTON_ICONS[lane]);
+            float scale = button_icon_height / static_cast<float>(tex.height);
+            float w = static_cast<float>(tex.width) * scale;
             float cx = lane_center_x(lane);
-            DrawTextEx(font, label,
-                       {cx - label_w / 2.0f, button_label_y},
-                       button_label_font_size, 1, Color{220, 220, 240, 255});
+            DrawTextureEx(tex, {cx - w / 2.0f, button_icon_y}, 0.0f, scale,
+                          Color{220, 220, 240, 255});
         }
 
         std::string score_text = "Score: " + std::to_string(score);