patch from Dresk which adds DP_SV_ENTITYCONTENTSTRANSITION extension which calls...

[xonotic/darkplaces.git] / sv_phys.c

diff --git a/sv_phys.c b/sv_phys.c
index 2c7cd21042389968f33e53af1dafaa51a31aa472..c00abe7f267f5acc19b46dd372058667b6705fa8 100644 (file)
--- a/sv_phys.c
+++ b/sv_phys.c
@@ -121,6 +121,46 @@ void SV_CheckAllEnts (void)
        }
 }
 
+// DRESK - Support for Entity Contents Transition Event
+/*
+================
+SV_CheckContentsTransition
+
+returns true if entity had a valid contentstransition function call
+================
+*/
+int SV_CheckContentsTransition(prvm_edict_t *ent, const int nContents)
+{
+       int bValidFunctionCall;
+       prvm_eval_t *contentstransition;
+
+       // Default Valid Function Call to False
+       bValidFunctionCall = false;
+
+       if(ent->fields.server->watertype != nContents)
+       { // Changed Contents
+               // Acquire Contents Transition Function from QC
+               contentstransition = PRVM_GETEDICTFIELDVALUE(ent, eval_contentstransition);
+
+               if(contentstransition->function)
+               { // Valid Function; Execute
+                       // Assign Valid Function
+                       bValidFunctionCall = true;
+                       // Prepare Parameters (Original Contents, New Contents)
+                               // Original Contents
+                               PRVM_G_FLOAT(OFS_PARM0) = ent->fields.server->watertype;
+                               // New Contents
+                               PRVM_G_FLOAT(OFS_PARM1) = nContents;
+                       // Execute VM Function
+                       PRVM_ExecuteProgram(contentstransition->function, "contentstransition: NULL function");
+               }
+       }
+
+       // Return if Function Call was Valid
+       return bValidFunctionCall;
+}
+
+
 /*
 ================
 SV_CheckVelocity
@@ -974,18 +1014,34 @@ SV_CheckWater
 qboolean SV_CheckWater (prvm_edict_t *ent)
 {
        int cont;
+       int nNativeContents;
        vec3_t point;
 
        point[0] = ent->fields.server->origin[0];
        point[1] = ent->fields.server->origin[1];
        point[2] = ent->fields.server->origin[2] + ent->fields.server->mins[2] + 1;
 
+       // DRESK - Support for Entity Contents Transition Event
+       // NOTE: Some logic needed to be slightly re-ordered
+       // to not affect performance and allow for the feature.
+
+       // Acquire Super Contents Prior to Resets
+       cont = SV_PointSuperContents(point);
+       // Acquire Native Contents Here
+       nNativeContents = Mod_Q1BSP_NativeContentsFromSuperContents(NULL, cont);
+
+       // DRESK - Support for Entity Contents Transition Event
+       if(ent->fields.server->watertype)
+               // Entity did NOT Spawn; Check
+               SV_CheckContentsTransition(ent, nNativeContents);
+
+
        ent->fields.server->waterlevel = 0;
        ent->fields.server->watertype = CONTENTS_EMPTY;
        cont = SV_PointSuperContents(point);
        if (cont & (SUPERCONTENTS_LIQUIDSMASK))
        {
-               ent->fields.server->watertype = Mod_Q1BSP_NativeContentsFromSuperContents(NULL, cont);
+               ent->fields.server->watertype = nNativeContents;
                ent->fields.server->waterlevel = 1;
                point[2] = ent->fields.server->origin[2] + (ent->fields.server->mins[2] + ent->fields.server->maxs[2])*0.5;
                if (SV_PointSuperContents(point) & (SUPERCONTENTS_LIQUIDSMASK))
@@ -1294,9 +1350,16 @@ void SV_CheckWaterTransition (prvm_edict_t *ent)
                return;
        }
 
-       // check if the entity crossed into or out of water
-       if (sv_sound_watersplash.string && ((ent->fields.server->watertype == CONTENTS_WATER || ent->fields.server->watertype == CONTENTS_SLIME) != (cont == CONTENTS_WATER || cont == CONTENTS_SLIME)))
-               SV_StartSound (ent, 0, sv_sound_watersplash.string, 255, 1);
+       // DRESK - Support for Entity Contents Transition Event
+       // NOTE: Call here BEFORE updating the watertype below,
+       // and suppress watersplash sound if a valid function
+       // call was made to allow for custom "splash" sounds.
+       if( !SV_CheckContentsTransition(ent, cont) )
+       { // Contents Transition Function Invalid; Potentially Play Water Sound
+               // check if the entity crossed into or out of water
+               if (sv_sound_watersplash.string && ((ent->fields.server->watertype == CONTENTS_WATER || ent->fields.server->watertype == CONTENTS_SLIME) != (cont == CONTENTS_WATER || cont == CONTENTS_SLIME)))
+                       SV_StartSound (ent, 0, sv_sound_watersplash.string, 255, 1);
+       }
 
        if (cont <= CONTENTS_WATER)
        {