src/game/fluid.h

   1 /*
   2  *
   3  *  Iter Vehemens ad Necem (IVAN)
   4  *  Copyright (C) Timo Kiviluoto
   5  *  Released under the GNU General
   6  *  Public License
   7  *
   8  *  See LICENSING which should be included
   9  *  along with this file for more details
  10  *
  11  */
  12 #ifndef __FLUID_H__
  13 #define __FLUID_H__
  14
  15 #include "lsquare.h"
  16 #include "trap.h"
  17
  18
  19 class bitmap;
  20
  21
  22 typedef truth (rawbitmap::*pixelpredicate) (v2) const;
  23
  24 class fluid : public entity {
  25 public:
  26   /* Come To The Dark Side */
  27   fluid *Next;
  28
  29 public:
  30   fluid ();
  31   fluid (liquid *, lsquare *);
  32   fluid (liquid *, item *, cfestring &, truth);
  33   virtual ~fluid ();
  34
  35   virtual void Be ();
  36   void Save (outputfile &) const;
  37   void Load (inputfile &);
  38   void SimpleDraw (blitdata &) const;
  39   void Draw (blitdata &) const;
  40   inline liquid *GetLiquid () const { return Liquid; }
  41   virtual square *GetSquareUnderEntity (int = 0) const { return LSquareUnder; }
  42   inline square *GetSquareUnder () const { return LSquareUnder; }
  43   inline void SetLSquareUnder (lsquare *What) { LSquareUnder = What; }
  44   inline lsquare *GetLSquareUnder () const { return LSquareUnder; }
  45   virtual truth IsOnGround () const { return true; }
  46   void AddLiquid (sLong);
  47   void AddLiquidAndVolume (sLong);
  48   virtual void SignalVolumeAndWeightChange ();
  49   void SetMotherItem (item *);
  50   static void AddFluidInfo (const fluid *, festring &);
  51   void CheckGearPicture (v2, int, truth);
  52   void DrawGearPicture (blitdata &, int) const;
  53   truth FadePictures ();
  54   void DrawBodyArmorPicture (blitdata &, int) const;
  55   void Redistribute ();
  56   virtual material *RemoveMaterial (material *);
  57   void Destroy ();
  58   inline cfestring &GetLocationName () const { return LocationName; }
  59   inline truth IsInside () const { return Flags & FLUID_INSIDE; }
  60   truth UseImage() const;
  61   virtual int GetTrapType () const { return Liquid->GetType() | FLUID_TRAP; }
  62   virtual feuLong GetTrapID () const { return TrapData.TrapID; }
  63   virtual feuLong GetVictimID () const { return TrapData.VictimID; }
  64   virtual void AddTrapName (festring &, int) const;
  65   virtual void UnStick () { TrapData.VictimID = 0; }
  66   virtual void UnStick (int I) { TrapData.BodyParts &= ~(1 << I); }
  67   void StepOnEffect (character *);
  68   virtual truth TryToUnStick (character *, v2);
  69   virtual void PreProcessForBone ();
  70   virtual void PostProcessForBone ();
  71   virtual truth IsStuckTo (ccharacter *) const;
  72   truth IsDangerous (ccharacter *) const;
  73
  74 protected:
  75   trapdata TrapData;
  76   struct imagedata {
  77     imagedata (truth = true);
  78     ~imagedata ();
  79     void Animate (blitdata &, int) const;
  80     void AddLiquidToPicture (const rawbitmap *, sLong, sLong, col16, pixelpredicate);
  81     void Save (outputfile &) const;
  82     void Load (inputfile &);
  83     truth Fade ();
  84     void Clear (truth);
  85     /* Only pictures of fluids not on ground have their RandMaps initialized,
  86        since they are animated. Note that the picture is always unrotated. */
  87     bitmap *Picture;
  88     /* Used by Animate() */
  89     mutable int DripTimer;
  90     mutable v2 DripPos;
  91     mutable col16 DripColor;
  92     mutable alpha DripAlpha;
  93     /* Sum of all alphas of Picture. The volume of the liquid is currently
  94        proportional to AlphaSum of the fluid's Image, limiting it
  95        considerably. */
  96     sLong AlphaSum;
  97     /* AlphaSum / (non-transparent pixels in Picture), used to synchronise
  98        gear pictures with the main image */
  99     packalpha AlphaAverage;
 100     /* The position of a gear picture in humanoid.pcx which binds the fluid;
 101        remembered so that it can be easily determined whether the fluid needs
 102        to be redistributed due to a major graphics change */
 103     v2 ShadowPos;
 104     /* Animation of gear items needs to know whether the raw picture is
 105        rotated somehow. Currently this is the case only for an item
 106        in the left hand of a character. */
 107     int SpecialFlags;
 108   };
 109   liquid *Liquid;
 110   lsquare *LSquareUnder;
 111   /* MotherItem == 0 means that the fluid is on ground */
 112   item *MotherItem;
 113   imagedata Image;
 114   /* Data of pictures shown over the player if he equips the item which
 115      the fluid covers. Note that these are not destroyed when the armor
 116      or weapon is unequipped. There is no real need, since the existence
 117      of the fluid is very temporary anyway. */
 118   imagedata *GearImage;
 119   feuLong Flags;
 120   festring LocationName;
 121   static const sLong BodyArmorPartPixels[];
 122 };
 123
 124
 125 outputfile &operator << (outputfile &, const fluid *);
 126 inputfile &operator >> (inputfile &, fluid *&);
 127
 128
 129 #endif