Fix Android node selection distance (#6187)

src/game.cpp

@@ -3550,6 +3550,9 @@ void Game::processPlayerInteraction(f32 dtime, bool show_hud, bool show_debug)
 
  if ((g_settings->getBool("touchtarget")) && (g_touchscreengui)) {
  shootline = g_touchscreengui->getShootline();
+ // Scale shootline to the acual distance the player can reach
+ shootline.end = shootline.start
+ + shootline.getVector().normalize() * BS * d;
  shootline.start += intToFloat(camera_offset, BS);
  shootline.end += intToFloat(camera_offset, BS);
  }

src/touchscreengui.h

@@ -156,6 +156,14 @@ class TouchScreenGUI
 
  double getPitch() { return m_camera_pitch; }
 
+ /*!
+ * Returns a line which describes what the player is pointing at.
+ * The starting point and looking direction are significant,
+ * the line should be scaled to match its length to the actual distance
+ * the player can reach.
+ * The line starts at the camera and ends on the camera's far plane.
+ * The coordinates do not contain the camera offset.
+ */
  line3d<f32> getShootline() { return m_shootline; }
 
  void step(float dtime);
@@ -180,6 +188,12 @@ class TouchScreenGUI
  double m_camera_yaw_change;
  double m_camera_pitch;
 
+ /*!
+ * A line starting at the camera and pointing towards the
+ * selected object.
+ * The line ends on the camera's far plane.
+ * The coordinates do not contain the camera offset.
+ */
  line3d<f32> m_shootline;
 
  rect<s32> m_control_pad_rect;