[Unity] Dungeon Gunner (11) - Dungeon Creation Design [9]

• preview Link : https://velog.io/@suhan0304/Unity-Dungeon-Gunner-10-Dungeon-Creation-Design-8
• gitHub Link : https://github.com/suhan0304/DungeonGunner

룸 노드 그래프 확장

룸 노드 그래프 편집기가 그리드 형식의 격자 무늬가 생기고 드래그해서 룸 노드 그래프 창을 움직이면서 더 다양하고 큰 룸 노드 그래프를 만들 수 있도록 스크립트를 구현해보자.

격자 무늬

격자 무늬는 세로, 가로 줄무니를 추가해서 격자 무늬 역할을 할 수 있도록 한다.

RoomNodeGraphEditor.cs

private void OnGUI()
{
    // If a scriptable object of type RoomNodeGraphSo has been selected then process
    if (currentRoomNodeGraph != null)
    {
        // Draw Grid
        DrawBackgroundGrid(gridSmall, 0.2f, Color.gray);
        DrawBackgroundGrid(gridLarge, 0.3f, Color.gray);

        // Draw line if being dragged
        DrawDraggedLine();

        // Process Events
        ProcessEvents(Event.current);

        // Draw Connections Between Room Nodes
        DrawRoomConnections();

        // Draw Room Nodes
        DrawRoomNodes();
    }

    if (GUI.changed)
        Repaint();
}

/// <summary>
/// Draw a background grid for the room node graph editor
/// </summary>
private void DrawBackgroundGrid(float gridSize, float gridOpacity, Color gridColor)
{
    int verticalLineCount = Mathf.CeilToInt((position.width + gridSize) / gridSize);
    int horizontalLineCount = Mathf.CeilToInt((position.height + gridSize) / gridSize);

    Handles.color = new Color(gridColor.r, gridColor.g, gridColor.b, gridOpacity);

    graphOffset += graphDrag * 0.5f;

    Vector3 gridOffset = new Vector3(graphOffset.x % gridSize, graphOffset.y % gridSize, 0);

    for (int i = 0; i < verticalLineCount; i++)
    {
        Handles.DrawLine(new Vector3(gridSize * i, -gridSize, 0) + gridOffset, new Vector3(gridSize * i, position.height + gridSize, 0f));
    }

    for (int j = 0; j < horizontalLineCount; j++)
    {
        Handles.DrawLine(new Vector3(-gridSize, gridSize * j, 0) + gridOffset, new Vector3(position.width + gridSize, gridSize * j, 0f));
    }

    Handles.color = Color.white;
}

룸 노드 그래프 드래그

기존의 드래그 이벤트 처리에 좌클릭 이벤트 처리 구문을 추가해서 노드 그래프를 이동 시킬 수 있도록 한다.

RoomNodeGraphEditor.cs

private Vector2 graphOffset;
private Vector2 graphDrag;

private void ProcessEvents(Event currentEvent)
{
    // Reset graph drag
    graphDrag = Vector2.zero;

    // Get room node that mouse is over if it's null or not currently being dragged
    if (currentRoomNode == null || currentRoomNode.isLeftClickDragging == false)
    {
        currentRoomNode = IsMouseOverRoomNode(currentEvent);
    }

    // if mouse isn't over a room node or we are currently dragging a line from the room node thyen process graph events
    if (currentRoomNode == null || currentRoomNodeGraph.roomNodeToDrawLineFrom != null)
    {
        ProcessRoomNodeGraphEvents(currentEvent);
    }

    // else process room node events
    else
    {
        // process room node events
        currentRoomNode.ProcessEvents(currentEvent);
    }
}

/// <summary>
/// Process mouse drag event
/// </summary>
private void ProcessMouseDragEvent(Event currentEvent)
{
    // process right click drag event - draw line
    if (currentEvent.button == 1)
    {
        ProcessRightMouseDragEvent(currentEvent);
    }
    // process left click drag event - drag node graph
    else if (currentEvent.button == 0)
    {
        ProcessLeftMouseDragEvent(currentEvent.delta);
    }
}

/// <summary>
/// Process left mouse drag event - drag room node graph
/// </summary>
private void ProcessLeftMouseDragEvent(Vector2 dragDelta)
{
    graphDrag = dragDelta;

    for (int i = 0; i < currentRoomNodeGraph.roomNodeList.Count; i++)
    {
        currentRoomNodeGraph.roomNodeList[i].DragNode(dragDelta);
    }

    GUI.changed = true;
}

다음과 같이 격자무늬가 생기고 드래그해서 룸 노드 그래프를 움직일 수 있다.

실제로 창보다 더 넓은 공간까지 룸 노드 그래프 제작이 가능하다.