Add offset adjustment for note insertion

core/shared/core/bpmsection.h

@@ -7,6 +7,7 @@ struct BPMSection
     int bpm = 120; // Hi, osu
     int fraction = 2;
     microsec offset_start = 0;
+    microsec interval = 0;
 };
 
 struct BPMSectionCompt

core/shared/core/editor.h

@@ -15,43 +15,68 @@ public:
     virtual void draw() const = 0;
     virtual void recalculate(const microsec& timestamp) = 0;
 
-    inline void setBPMSections(const std::set<BPMSection, BPMSectionCompt>& sections) noexcept
+    void setBPMSections(const std::set<BPMSection, BPMSectionCompt>& sections) noexcept
     {
         _bpm_sections = sections;
     }
 
-    inline void setBPMSections(std::set<BPMSection, BPMSectionCompt>&& sections) noexcept
+    void setBPMSections(std::set<BPMSection, BPMSectionCompt>&& sections) noexcept
     {
         _bpm_sections = std::move(sections);
     }
 
-    void insertBPMSection(const BPMSection& section)
+    bool insertBPMSection(const BPMSection& section)
     {
-        _bpm_sections.insert(section);
+        return _bpm_sections.insert(section).second;
     }
 
-    void insertBPMSection(BPMSection&& section)
+    bool insertBPMSection(BPMSection&& section)
     {
-        _bpm_sections.insert(std::move(section));
+        return _bpm_sections.insert(std::move(section)).second;
     }
 
-    /*void removeBPMSectionAt(const microsec& offset)
+    bool removeBPMSectionAt(const microsec& offset)
     {
-        const auto section_it = std::find_if(_bpm_sections.rbegin(), _bpm_sections.rend(),
+        auto section_it = std::find_if(_bpm_sections.rbegin(), _bpm_sections.rend(),
                                        [offset](const auto& section)
                                        {
-                                                 return section.start_offset < offset;
+                                           return section.offset_start < offset;
                                        });
 
         if (section_it != _bpm_sections.rend())
-            _bpm_sections.erase((section_it + 1).base());
-    }*/
+        {
+            ++section_it;
+            _bpm_sections.erase(section_it.base());
 
-    inline void clearBPMSections() noexcept
+            return true;
+        }
+
+        return false;
+    }
+
+    BPMSection getBPMSectionAt(const microsec& offset) const
+    {
+        auto section_it = std::find_if(_bpm_sections.rbegin(), _bpm_sections.rend(),
+                                       [offset](const auto& section)
+                                       {
+                                           return section.offset_start < offset;
+                                       });
+
+        if (section_it != _bpm_sections.rend())
+        {
+            ++section_it;
+            return *section_it.base();
+        }
+
+        return BPMSection();
+    }
+
+    void clearBPMSections() noexcept
     {
         _bpm_sections.clear();
     }
 
 protected:
     std::set<BPMSection, BPMSectionCompt> _bpm_sections;
+    std::set<microsec> _ticks;
 };

modes/classicmode/editor/classiceditor.cpp

@@ -30,6 +30,49 @@ ClassicEditor::ClassicEditor(std::shared_ptr<ClassicGraphicsManager>&& manager)
     _timeline.setNotes(_set, 1648648);
 }
 
+microsec ClassicEditor::adjustOffset(microsec offset) const noexcept
+{
+    microsec  left = -1;
+    microsec right = -1;
+
+    std::set<microsec>::iterator i;
+
+    for (i = _ticks.begin(); i != _ticks.end(); ++i)
+    {
+        if (*i >= offset)
+        {
+            right = *i;
+            break;
+        }
+    }
+
+    for (; i != _ticks.end(); --i)
+    {
+        if (*i <= offset)
+        {
+            left = *i;
+            break;
+        }
+    }
+
+    if (right == -1)
+        offset = left;
+    else if (left == -1)
+        offset = right;
+    else
+    {
+        const microsec right_distance = right - offset;
+        const microsec left_distance = offset - left;
+
+        offset = (right_distance > left_distance)
+               ? left_distance
+               : right_distance;
+    }
+
+
+    return offset;
+}
+
 void ClassicEditor::input(PlayerInput&& inputdata)
 {
     _current_time = inputdata.timestamp;
@@ -44,12 +87,12 @@ void ClassicEditor::input(PlayerInput&& inputdata)
     case sf::Event::MouseButtonPressed:
     {
         const auto note = _timeline.getNoteBy(_current_time);
-        if (_timeline.isExpired(note))
+        if (_timeline.isExpired(note) && !_ticks.empty())
         {
             NoteInitializer init;
             init.context = &_context;
             init.intervals = {};
-            init.perfect_offset = _current_time;
+            init.perfect_offset = adjustOffset(_current_time);
 
             ElementInitializer elem_init;
             elem_init.type = _selected_type;

modes/classicmode/editor/classiceditor.h

@@ -22,6 +22,8 @@ public:
     void selectNoteType(Type type) noexcept;
 
 private:
+    inline microsec adjustOffset(microsec offset) const noexcept;
+
     Context _context;
 
     std::shared_ptr<ClassicGraphicsManager> _graphics_manager;

modes/classicmode/game/classicgame.h

@@ -9,7 +9,7 @@
 #include "core/game.h"
 #include "core/timeline.h"
 
-#include "context.h"
+#include "classicmode/context.h"
 #include "classicnote.h"
 
 #include "classicmode/classicactions.h"

modes/classicmode/game/classicnote.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "context.h"
+#include "classicmode/context.h"
 #include "core/note.h"
 #include "core/precisionevaluator.h"
 #include "classicmode/noteinitializer.h"