prj/cam/src/render/slitprop.cpp

   1 /*
   2 @Copyright Looking Glass Studios, Inc.
   3 1996,1997,1998,1999,2000 Unpublished Work.
   4 */
   5
   6 // $Header: r:/t2repos/thief2/src/render/slitprop.cpp,v 1.15 1999/03/04 17:30:37 XEMU Exp $
   7
   8 #include <propert_.h>
   9 #include <propface.h>
  10 #include <objslit.h>
  11 #include <slitprop.h>
  12 #include <objlight.h>
  13 #include <objpos.h>
  14 #include <rendprop.h>
  15 #include <stdlib.h>
  16 #include <math.h>
  17 #include <osysbase.h>
  18 #include <portal.h>
  19 #include <litprop.h>
  20
  21
  22 // Must be last header
  23 #include <dbmem.h>
  24
  25
  26 ////////////////////////////////////////////////////////////
  27 // SELF-ILLUMINATION PROP API
  28 //
  29
  30
  31 ////////////////////////////////////////////////////////////
  32 // SELF-ILLUMINATION PROPERTY CREATION
  33 //
  34
  35 static IIntProperty* gSelfLitProp = NULL;
  36
  37 static sPropertyDesc selflitprop_desc  =
  38 {
  39    PROP_SELF_LIT_NAME,
  40    kPropertyNoInherit|kPropertyInstantiate,
  41    NULL, 0, 0,
  42    { "Renderer", "Dynamic Light" },
  43 };
  44
  45 void SelfLitPropInit(void)
  46 {
  47    gSelfLitProp = CreateIntProperty(&selflitprop_desc, kPropertyImplDense);
  48 }
  49
  50
  51 BOOL ObjGetSelfLit(ObjID obj, int *psl)
  52 {
  53    if (gSelfLitProp)
  54    {
  55       BOOL retval = gSelfLitProp->Get(obj,psl);
  56       return retval;
  57    }
  58    return FALSE;
  59 }
  60
  61 BOOL ObjSetSelfLit(ObjID obj, int sl)
  62 {
  63
  64    if (gSelfLitProp)
  65    {
  66       gSelfLitProp->Set(obj,sl);
  67       return TRUE;
  68    }
  69    return FALSE;
  70 }
  71
  72
  73 //
  74 // Update all self-lit objects
  75 //
  76
  77 extern "C" BOOL g_lgd3d;
  78
  79 void SelfLitUpdateAll(void)
  80 {
  81    if (!gSelfLitProp)
  82       return;
  83
  84    IIntProperty* prop = gSelfLitProp;
  85    sPropertyObjIter iter;
  86    ObjID obj;
  87    int light;
  88
  89    prop->IterStart(&iter);
  90    while(prop->IterNextValue(&iter,&obj,&light))
  91       if (OBJ_IS_CONCRETE(obj) && ObjHasRefs(obj))
  92       {
  93          ObjPos* pos = ObjPosGet(obj);
  94          // @HACK for EEE: larger radius in hardware
  95 #ifdef RGB_LIGHTING
  96          {
  97             float hue,saturation;
  98             int r,g,b;
  99             ObjColorGet(obj, &hue, &saturation);
 100             portal_convert_hsb_to_rgb(&r,&g,&b,hue,saturation);
 101             portal_set_normalized_color(r,g,b);
 102          }
 103 #endif
 104          add_dynamic_light(&pos->loc, light, g_lgd3d ? 10.0 : 4.0);
 105       }
 106    prop->IterStop(&iter);
 107 }
 108
 109
 110 static IIntProperty* g_pShadowProp = NULL;
 111
 112 static sPropertyDesc shadow_prop_desc  =
 113 {
 114    PROP_SHADOW_NAME,
 115    kPropertyNoInherit|kPropertyInstantiate,
 116    NULL, 0, 0,
 117    { "Renderer", "Shadow" },
 118 };
 119
 120 void ShadowPropInit(void)
 121 {
 122    g_pShadowProp = CreateIntProperty(&shadow_prop_desc,
 123                                      kPropertyImplLlist);
 124 }
 125
 126
 127 BOOL ObjGetShadow(ObjID obj, int *s)
 128 {
 129    if (g_pShadowProp) {
 130       BOOL retval = g_pShadowProp->Get(obj, s);
 131       return retval;
 132    }
 133    return FALSE;
 134 }
 135
 136 BOOL ObjSetShadow(ObjID obj, int s)
 137 {
 138    if (g_pShadowProp)
 139    {
 140       g_pShadowProp->Set(obj, s);
 141       return TRUE;
 142    }
 143    return FALSE;
 144 }
 145
 146
 147 //
 148 // Update all objects with shadows
 149 //
 150
 151 // Up to this distance from the object's center, the shadow is
 152 // at full strength.
 153 #define kShadowCutoff 6.0
 154 // If the floor is further than this, there's no shadow.
 155 #define kShadowMaxDist 15.0
 156
 157 void ShadowUpdateAll(void)
 158 {
 159    if (!g_pShadowProp)
 160       return;
 161
 162    IIntProperty* prop = g_pShadowProp;
 163    sPropertyObjIter iter;
 164    ObjID obj;
 165    int iLevel;
 166    float fIntensity;
 167    float fZDiff;
 168    ObjPos *pos;
 169    Location EndLoc, HitLoc;
 170
 171    prop->IterStart(&iter);
 172    while(prop->IterNextValue(&iter, &obj, &iLevel))
 173       if (OBJ_IS_CONCRETE(obj) && ObjHasRefs(obj)) {
 174          fIntensity = iLevel;
 175          pos = ObjPosGet(obj);
 176          EndLoc = pos->loc;
 177          HitLoc = EndLoc;
 178          EndLoc.vec.z -= kShadowMaxDist;
 179
 180          if (!PortalRaycast(&pos->loc, &EndLoc, &HitLoc, 0)) {
 181             fZDiff = pos->loc.vec.z - HitLoc.vec.z;
 182             if (fZDiff > kShadowCutoff)
 183                fIntensity *= (kShadowMaxDist - fZDiff)
 184                            / (kShadowMaxDist - kShadowCutoff);
 185
 186             HitLoc.vec.z += .1;
 187             portal_add_simple_dynamic_dark(fIntensity, fIntensity,
 188                                            &HitLoc, 8.0);
 189          }
 190       }
 191    prop->IterStop(&iter);
 192 }
 193