slot.h

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#ifndef SLOT_H_
#define SLOT_H_

enum
{
    VSlot_ShParam = 0,
    VSlot_Scale,
    VSlot_Rotation,
    VSlot_Offset,
    VSlot_Scroll,
    VSlot_Layer,
    VSlot_Alpha,
    VSlot_Color,
    VSlot_Reserved, // used by RE
    VSlot_Refract,
    VSlot_Detail,
    VSlot_Angle,
    VSlot_Num
};
 
struct SlotShaderParam
{
    enum
    {
        REUSE = 1<<0
    };
 
    const char *name;
    size_t loc;
    int flags;
    float val[4];
};
 
struct Texture;
class Shader;
struct VSlot; //both slot and vslot depend on each other

struct Slot
{
    enum
    {
        SlotType_Octa,
        SlotType_Material,
        SlotType_Decal
    };
 
    struct Tex
    {
        int type;
        Texture *t;
        string name;
        int combined;
 
        Tex() : t(nullptr), combined(-1) {}
    };
 
    int index, smooth;
    std::vector<Tex> sts;
    Shader *shader;
    std::vector<SlotShaderParam> params;
    VSlot *variants;
    bool loaded;
    uint texmask;
    char *grass;
    Texture *grasstex, *thumbnail;
 
    Slot(int newindex = -1) : index(newindex), variants(nullptr), grass(nullptr) { reset(); }
    virtual ~Slot() {}
 
    virtual int type() const
    {
        return SlotType_Octa;
    }
 
    virtual const char *name() const;
    virtual const char *texturedir() const
    {
        return "media/texture";
    }
 
    virtual VSlot &emptyvslot();
 
    virtual int cancombine(int type) const;
    virtual bool shouldpremul(int) const
    {
        return false;
    }

    int findtextype(int type, int last = -1) const;
 
    void load(int index, Slot::Tex &t);
    void load();

    Texture *loadthumbnail();
 
    void reset()
    {
        smooth = -1;
        sts.clear();
        shader = nullptr;
        params.clear();
        loaded = false;
        texmask = 0;
        delete[] grass;
        grass = nullptr;
        grasstex = nullptr;
        thumbnail = nullptr;
    }
 
    void cleanup()
    {
        loaded = false;
        grasstex = nullptr;
        thumbnail = nullptr;
        for(uint i = 0; i < sts.size(); i++)
        {
            Tex &t = sts[i];
            t.t = nullptr;
            t.combined = -1;
        }
    }
};

struct VSlot
{
    Slot *slot;
    VSlot *next;
    int index;
    int changed; 
    std::vector<SlotShaderParam> params;
    bool linked;
    float scale;
    int rotation;
    vec angle;
    ivec2 offset;
    vec2 scroll;
    int layer;
    float alphafront, alphaback;
    vec colorscale;
    vec glowcolor;
    float refractscale;
    vec refractcolor;
 
    VSlot(Slot *newslot = nullptr, int newindex = -1) : slot(newslot), next(nullptr), index(newindex), changed(0)
    {
        reset();
        if(slot)
        {
            addvariant(slot);
        }
    }
 
    void addvariant(Slot *slot);
 
    void reset()
    {
        params.clear();
        linked = false;
        scale = 1;
        rotation = 0;
        angle = vec(0, sinf(0), cosf(0));
        offset = ivec2(0, 0);
        scroll = vec2(0, 0);
        layer = 0;
        alphafront = 0.5f;
        alphaback = 0;
        colorscale = vec(1, 1, 1);
        glowcolor = vec(1, 1, 1);
        refractscale = 0;
        refractcolor = vec(1, 1, 1);
    }
 
    void cleanup()
    {
        linked = false;
    }
 
    bool isdynamic() const;
};

struct DecalSlot final : Slot, VSlot
{
    float depth, fade;
 
    DecalSlot(int index = -1) : Slot(index), VSlot(this), depth(1), fade(0.5f) {}
 
    int type() const override final
    {
        return SlotType_Decal;
    }
 
    const char *name() const override final;
    const char *texturedir() const override final
    {
        return "media/decal";
    }
 
    VSlot &emptyvslot() override final
    {
        return *this;
    }
 
    int cancombine(int type) const override final;
    bool shouldpremul(int type) const override final;
 
    void reset()
    {
        Slot::reset();
        VSlot::reset();
        depth = 1;
        fade = 0.5f;
    }
 
    void cleanup()
    {
        Slot::cleanup();
        VSlot::cleanup();
    }
};
 
extern std::vector<Slot *> slots;
extern std::vector<VSlot *> vslots;
extern std::vector<int *> editingvslots;
 
extern const char *getshaderparamname(const char *name, bool insert = true);
extern void setldrnotexture();
 
extern VSlot *findvslot(const Slot &slot, const VSlot &src, const VSlot &delta);
extern VSlot *editvslot(const VSlot &src, const VSlot &delta);
extern Slot &lookupslot(int slot, bool load = true);
extern VSlot &lookupvslot(int slot, bool load = true);
extern bool unpackvslot(ucharbuf &buf, VSlot &dst, bool delta);
extern DecalSlot &lookupdecalslot(int slot, bool load = true);
 
#endif /* SLOT_H_ */