More code deduplication

src/badguy/crusher.cpp

@@ -653,18 +653,24 @@ Crusher::eye_position(bool right) const
     break;
   case RECOVERING:
   {
+    // Amplitude dependent on size.
     auto amplitude = static_cast<float>(m_sprite->get_width()) / 64.0f * 2.0f;
+
+    //Phase factor due to cooldown timer.
+    auto cooldown_phase_factor = (m_ic_size == NORMAL ? RECOVER_SPEED_NORMAL : RECOVER_SPEED_LARGE) + m_cooldown_timer * 13.0f;
+
+    // Phase factor due to y position.
+    auto y_position_phase_factor = !m_sideways ? get_pos().y / 13 : get_pos().x / 13;
+
+    auto phase_factor = y_position_phase_factor - cooldown_phase_factor;
+
     // Eyes spin while crusher is recovering, giving a dazed impression.
     return Vector(sinf((right ? 1 : -1) * // X motion of each eye is opposite of the other.
-      ((!m_sideways ? get_pos().y / 13 : get_pos().x / 13) - // Phase factor due to y position.
-      (m_ic_size == NORMAL ? RECOVER_SPEED_NORMAL : RECOVER_SPEED_LARGE) + m_cooldown_timer * 13.0f)) * //Phase factor due to cooldown timer.
-      amplitude - (right ? 1 : -1) * // Amplitude dependent on size.
+      phase_factor) * amplitude - (right ? 1 : -1) *
       amplitude, // Offset to keep eyes visible.
 
       cosf((right ? 3.1415f : 0.0f) + // Eyes spin out of phase of eachother.
-      (!m_sideways ? get_pos().y / 13 : get_pos().x / 13) - // Phase factor due to y position.
-        (m_ic_size == NORMAL ? RECOVER_SPEED_NORMAL : RECOVER_SPEED_LARGE) + m_cooldown_timer * 13.0f) * //Phase factor due to cooldown timer.
-      amplitude -  // Amplitude dependent on size.
+      phase_factor) * amplitude - 
       amplitude); // Offset to keep eyes visible.
   }
   default: