Option to center camera zoom only

Author: swagtoy

src/editor/editor.cpp

@@ -643,7 +643,7 @@ Editor::update(float dt_sec, const Controller& controller)
       camera.set_scale(m_new_scale);
 
       // When zooming in, focus on the position of the mouse.
-      if (zooming_in && !m_key_zoomed)
+      if (zooming_in && !m_key_zoomed && !g_config->editor_zoom_centered)
         camera.move((m_mouse_pos - Vector(static_cast<float>(SCREEN_WIDTH - 128),
                                           static_cast<float>(SCREEN_HEIGHT - 32)) / 2.f) / CAMERA_ZOOM_FOCUS_PROGRESSION);
 

src/supertux/gameconfig.cpp

@@ -113,6 +113,7 @@ Config::Config() :
   editor_invert_shift_scroll(true),
   editor_autotile_mode(false),
   editor_autotile_help(true),
+  editor_zoom_centered(false),
   editor_autosave_frequency(5),
   editor_undo_tracking(true),
   editor_undo_stack_size(20),
@@ -253,6 +254,7 @@ Config::load()
     editor_mapping->get("render_grid", editor_render_grid);
     editor_mapping->get("render_lighting", editor_render_lighting);
     editor_mapping->get("invert_shift_scroll", editor_invert_shift_scroll);
+    editor_mapping->get("zoom_centered", editor_zoom_centered);
     editor_mapping->get("selected_snap_grid_size", editor_selected_snap_grid_size);
     editor_mapping->get("snap_to_grid", editor_snap_to_grid);
     editor_mapping->get("undo_tracking", editor_undo_tracking);
@@ -534,6 +536,7 @@ Config::save()
     writer.write("render_grid", editor_render_grid);
     writer.write("render_lighting", editor_render_lighting);
     writer.write("invert_shift_scroll", editor_invert_shift_scroll);
+    writer.write("zoom_centered", editor_zoom_centered);
     writer.write("selected_snap_grid_size", editor_selected_snap_grid_size);
     writer.write("snap_to_grid", editor_snap_to_grid);
     writer.write("undo_tracking", editor_undo_tracking);

src/supertux/gameconfig.hpp

@@ -158,6 +158,7 @@ class Config final
   bool editor_invert_shift_scroll;
   bool editor_autotile_mode;
   bool editor_autotile_help;
+  bool editor_zoom_centered;
   int editor_autosave_frequency;
   bool editor_undo_tracking;
   int editor_undo_stack_size;

src/supertux/menu/editor_settings.cpp

@@ -39,6 +39,7 @@ EditorSettings::EditorSettings()
   add_toggle(-1, _("Render Light"), &(Compositor::s_render_lighting));
   add_toggle(-1, _("Render Animations"), &(g_config->editor_render_animations));
   add_toggle(-1, _("Invert Shift+Scroll"), &(g_config->editor_invert_shift_scroll));
+  add_toggle(-1, _("Centered Zoom"), &(g_config->editor_zoom_centered));
   add_toggle(-1, _("Autotile Mode"), &(g_config->editor_autotile_mode));
   add_toggle(-1, _("Enable Autotile Help"), &(g_config->editor_autotile_help));
   add_toggle(-1, _("Enable Object Undo Tracking"), &(g_config->editor_undo_tracking));