layer_tiles.h

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#ifndef GAME_EDITOR_MAPITEMS_LAYER_TILES_H
#define GAME_EDITOR_MAPITEMS_LAYER_TILES_H
 
#include "layer.h"
 
#include <base/dbg.h>
#include <base/mem.h>
 
#include <game/editor/editor_trackers.h>
#include <game/editor/enums.h>
 
#include <map>
 
struct STileStateChange
{
    bool m_Changed;
    CTile m_Previous;
    CTile m_Current;
};
 
template<typename T>
using EditorTileStateChangeHistory = std::map<int, std::map<int, T>>;

enum class EShiftDirection : int
{
    LEFT,
    RIGHT,
    UP,
    DOWN,
};
 
class CIntRect
{
public:
    int x, y;
    int w, h;
};
 
class CLayerTiles : public CLayer
{
protected:
    template<typename T>
    void ShiftImpl(T *pTiles, EShiftDirection Direction, int ShiftBy)
    {
        switch(Direction)
        {
        case EShiftDirection::LEFT:
            ShiftBy = minimum(ShiftBy, m_Width);
            for(int y = 0; y < m_Height; ++y)
            {
                if(ShiftBy < m_Width)
                    mem_move(&pTiles[y * m_Width], &pTiles[y * m_Width + ShiftBy], (m_Width - ShiftBy) * sizeof(T));
                mem_zero(&pTiles[y * m_Width + (m_Width - ShiftBy)], ShiftBy * sizeof(T));
            }
            break;
        case EShiftDirection::RIGHT:
            ShiftBy = minimum(ShiftBy, m_Width);
            for(int y = 0; y < m_Height; ++y)
            {
                if(ShiftBy < m_Width)
                    mem_move(&pTiles[y * m_Width + ShiftBy], &pTiles[y * m_Width], (m_Width - ShiftBy) * sizeof(T));
                mem_zero(&pTiles[y * m_Width], ShiftBy * sizeof(T));
            }
            break;
        case EShiftDirection::UP:
            ShiftBy = minimum(ShiftBy, m_Height);
            for(int y = ShiftBy; y < m_Height; ++y)
            {
                mem_copy(&pTiles[(y - ShiftBy) * m_Width], &pTiles[y * m_Width], m_Width * sizeof(T));
            }
            for(int y = m_Height - ShiftBy; y < m_Height; ++y)
            {
                mem_zero(&pTiles[y * m_Width], m_Width * sizeof(T));
            }
            break;
        case EShiftDirection::DOWN:
            ShiftBy = minimum(ShiftBy, m_Height);
            for(int y = m_Height - ShiftBy - 1; y >= 0; --y)
            {
                mem_copy(&pTiles[(y + ShiftBy) * m_Width], &pTiles[y * m_Width], m_Width * sizeof(T));
            }
            for(int y = 0; y < ShiftBy; ++y)
            {
                mem_zero(&pTiles[y * m_Width], m_Width * sizeof(T));
            }
            break;
        default:
            dbg_assert_failed("Direction invalid: %d", (int)Direction);
        }
    }
    template<typename T>
    void BrushFlipXImpl(T *pTiles)
    {
        for(int y = 0; y < m_Height; y++)
            for(int x = 0; x < m_Width / 2; x++)
                std::swap(pTiles[y * m_Width + x], pTiles[(y + 1) * m_Width - 1 - x]);
    }
    template<typename T>
    void BrushFlipYImpl(T *pTiles)
    {
        for(int y = 0; y < m_Height / 2; y++)
            for(int x = 0; x < m_Width; x++)
                std::swap(pTiles[y * m_Width + x], pTiles[(m_Height - 1 - y) * m_Width + x]);
    }
 
public:
    CLayerTiles(CEditorMap *pMap, int w, int h);
    CLayerTiles(const CLayerTiles &Other);
    ~CLayerTiles() override;
 
    [[nodiscard]] virtual CTile GetTile(int x, int y) const;
    virtual void SetTile(int x, int y, CTile Tile);
    void SetTileIgnoreHistory(int x, int y, CTile Tile) const;
 
    virtual void Resize(int NewW, int NewH);
    virtual void Shift(EShiftDirection Direction);
 
    void MakePalette() const;
    void Render(bool Tileset = false) override;
 
    int ConvertX(float x) const;
    int ConvertY(float y) const;
    void Convert(CUIRect Rect, CIntRect *pOut) const;
    void Snap(CUIRect *pRect) const;
    void Clamp(CIntRect *pRect) const;
 
    bool IsEntitiesLayer() const override;
 
    [[nodiscard]] virtual bool IsEmpty() const;
    void BrushSelecting(CUIRect Rect) override;
    int BrushGrab(CLayerGroup *pBrush, CUIRect Rect) override;
    void FillSelection(bool Empty, CLayer *pBrush, CUIRect Rect) override;
    void FillGameTiles(EGameTileOp Fill);
    bool CanFillGameTiles() const;
    void BrushDraw(CLayer *pBrush, vec2 WorldPos) override;
    void BrushFlipX() override;
    void BrushFlipY() override;
    void BrushRotate(float Amount) override;
 
    std::shared_ptr<CLayer> Duplicate() const override;
    const char *TypeName() const override;
 
    virtual void ShowInfo();
    CUi::EPopupMenuFunctionResult RenderProperties(CUIRect *pToolbox) override;
 
    struct SCommonPropState
    {
        enum
        {
            MODIFIED_SIZE = 1 << 0,
            MODIFIED_COLOR = 1 << 1,
        };
        int m_Modified = 0;
        int m_Width = -1;
        int m_Height = -1;
        int m_Color = 0;
    };
    static CUi::EPopupMenuFunctionResult RenderCommonProperties(SCommonPropState &State, CEditorMap *pEditorMap, CUIRect *pToolbox, std::vector<std::shared_ptr<CLayerTiles>> &vpLayers, std::vector<int> &vLayerIndices);
 
    bool IsEnvelopeUsed(int EnvelopeIndex) const override;
    bool IsImageUsed(int ImageIndex) const override;
 
    void ModifyImageIndex(const FIndexModifyFunction &IndexModifyFunction) override;
    void ModifyEnvelopeIndex(const FIndexModifyFunction &IndexModifyFunction) override;
 
    void PrepareForSave();
    void ExtractTiles(const CTile *pSavedTiles, size_t SavedTilesSize) const;
 
    void GetSize(float *pWidth, float *pHeight) override
    {
        *pWidth = m_Width * 32.0f;
        *pHeight = m_Height * 32.0f;
    }
 
    void FlagModified(int x, int y, int w, int h);
 
    bool m_HasGame;
    int m_Image;
    int m_Width;
    int m_Height;
    CColor m_Color;
    int m_ColorEnv;
    int m_ColorEnvOffset;
    CTile *m_pTiles;
 
    // DDRace
 
    int m_FillGameTile = -1;
    bool m_LiveGameTiles = false;
    int m_AutoMapperConfig;
    int m_AutoMapperReference;
    int m_Seed;
    bool m_AutoAutoMap;
    bool m_HasTele;
    bool m_HasSpeedup;
    bool m_HasFront;
    bool m_HasSwitch;
    bool m_HasTune;
    char m_aFilename[IO_MAX_PATH_LENGTH];
    bool m_KnownTextModeLayer = false;
 
    EditorTileStateChangeHistory<STileStateChange> m_TilesHistory;
    virtual void ClearHistory() { m_TilesHistory.clear(); }
 
    static bool HasAutomapEffect(ETilesProp Prop);
 
protected:
    void RecordStateChange(int x, int y, CTile Previous, CTile Tile);
 
    void ShowPreventUnusedTilesWarning();
 
    friend class CAutoMapper;
};
 
#endif