Fixed particles for Prey.

2026-08-22 05:25:44 +02:00 · 2026-05-07 14:00:07 -07:00
parent 469be38dbe
commit 13e58aba52
2 changed files with 463 additions and 162 deletions
@@ -171,6 +171,140 @@ void idDeclParticle::ParseParms( idLexer &src, float *parms, int maxParms ) {
 	}
 }

+/*
+================
+idDeclParticle::IsParticleStageToken
+================
+*/
+static bool IsParticleStageToken(const idToken& token) {
+	if (!token.Icmp("}")) {
+		return true;
+	}
+	if (!token.Icmp("{")) {
+		return true;
+	}
+	if (!token.Icmp("material")) {
+		return true;
+	}
+	if (!token.Icmp("count")) {
+		return true;
+	}
+	if (!token.Icmp("time")) {
+		return true;
+	}
+	if (!token.Icmp("cycles")) {
+		return true;
+	}
+	if (!token.Icmp("timeOffset")) {
+		return true;
+	}
+	if (!token.Icmp("deadTime")) {
+		return true;
+	}
+	if (!token.Icmp("randomDistribution")) {
+		return true;
+	}
+	if (!token.Icmp("bunching")) {
+		return true;
+	}
+	if (!token.Icmp("distribution")) {
+		return true;
+	}
+	if (!token.Icmp("direction")) {
+		return true;
+	}
+	if (!token.Icmp("orientation")) {
+		return true;
+	}
+	if (!token.Icmp("customPath")) {
+		return true;
+	}
+	if (!token.Icmp("speed")) {
+		return true;
+	}
+	if (!token.Icmp("rotation")) {
+		return true;
+	}
+	if (!token.Icmp("angle")) {
+		return true;
+	}
+	if (!token.Icmp("entityColor")) {
+		return true;
+	}
+	if (!token.Icmp("size")) {
+		return true;
+	}
+	if (!token.Icmp("aspect")) {
+		return true;
+	}
+	if (!token.Icmp("fadeIn")) {
+		return true;
+	}
+	if (!token.Icmp("fadeOut")) {
+		return true;
+	}
+	if (!token.Icmp("fadeIndex")) {
+		return true;
+	}
+	if (!token.Icmp("color")) {
+		return true;
+	}
+	if (!token.Icmp("fadeColor")) {
+		return true;
+	}
+	if (!token.Icmp("offset")) {
+		return true;
+	}
+	if (!token.Icmp("animationFrames")) {
+		return true;
+	}
+	if (!token.Icmp("animationRate")) {
+		return true;
+	}
+	if (!token.Icmp("boundsExpansion")) {
+		return true;
+	}
+	if (!token.Icmp("gravity")) {
+		return true;
+	}
+#ifdef PREY
+	if (!token.Icmp("lowSkippable")) {
+		return true;
+	}
+#endif
+
+	return false;
+}
+
+/*
+================
+idDeclParticle::ReadParticleParmFloat
+================
+*/
+static bool ReadParticleParmFloat(idLexer& src, float& value) {
+	idToken token;
+
+	if (!src.ReadToken(&token)) {
+		src.Error("missing particle parm value");
+		return false;
+	}
+
+	if (!token.Cmp("-")) {
+		idToken token2;
+
+		if (!src.ReadToken(&token2)) {
+			src.Error("no number after minus sign");
+			return false;
+		}
+
+		token = "-" + token2;
+	}
+
+	token.StripQuotes();
+	value = atof(token.c_str());
+	return true;
+}
+
 /*
 ================
 idDeclParticle::ParseParametric
@@ -180,34 +314,91 @@ void idDeclParticle::ParseParametric( idLexer &src, idParticleParm *parm ) {
 	idToken token;

 	parm->table = NULL;
-	parm->from = parm->to = 0.0f;
+	parm->from = 0.0f;
+	parm->to = 0.0f;

+#ifdef PREY
+	parm->randomp = 0.0f;
+#endif
+
+	//
+	// First token can be:
+	//		10
+	//		-10
+	//		table sometable
+	//
 	if (!src.ReadToken(&token)) {
-		src.Error( "not enough parameters" );
+		src.Error("missing particle parm");
 		return;
 	}

-	if ( token.IsNumeric() ) {
-		// can have a to + 2nd parm
-		parm->from = parm->to = atof( token );
-		if ( src.ReadToken( &token ) ) {
-			if ( !token.Icmp( "to" ) ) {
-				if ( !src.ReadToken( &token ) ) {
-					src.Error( "missing second parameter" );
+	if (!token.Cmp("-")) {
+		idToken token2;
+
+		if (!src.ReadToken(&token2)) {
+			src.Error("no number after minus sign");
 			return;
 		}
-				parm->to = atof( token );
-			} else {
+
+		token = "-" + token2;
+	}
+
+	token.StripQuotes();
+
+	if (!token.Icmp("table")) {
+		if (!src.ReadToken(&token)) {
+			src.Error("missing table name");
+			return;
+		}
+
+		token.StripQuotes();
+
+		parm->table = static_cast<const idDeclTable*>(declManager->FindType(DECL_TABLE, token.c_str(), false));
+		parm->from = 0.0f;
+		parm->to = 1.0f;
+	}
+	else {
+		parm->from = atof(token.c_str());
+		parm->to = parm->from;
+	}
+
+	//
+	// Prey allows:
+	//		size 1.000 to 2.000 with 0.500
+	// and also broken/exported formatting:
+	//		size 1.000
+	//		 with 0.500
+	//
+	while (src.ReadToken(&token)) {
+		if (IsParticleStageToken(token)) {
 			src.UnreadToken(&token);
-			}
-		}
-	} else {
-		// table
-		parm->table = static_cast<const idDeclTable *>( declManager->FindType( DECL_TABLE, token, false ) );
+			break;
 		}

+		if (!token.Icmp("to")) {
+			if (!ReadParticleParmFloat(src, parm->to)) {
+				return;
+			}
+			continue;
 		}

+#ifdef PREY
+		if (!token.Icmp("with")) {
+			if (!ReadParticleParmFloat(src, parm->randomp)) {
+				return;
+			}
+			continue;
+		}
+#endif
+
+		//
+		// If some other token appears, do not eat the rest of the stage.
+		// Put it back so the normal stage parser can report it correctly.
+		//
+		src.UnreadToken(&token);
+		break;
+	}
+}
 /*
 ================
 idDeclParticle::ParseParticleStage
@@ -267,11 +458,14 @@ idParticleStage *idDeclParticle::ParseParticleStage( idLexer &src ) {
 			src.ReadToken(&token);
 			if (!token.Icmp("rect")) {
 				stage->distributionType = PDIST_RECT;
-			} else if ( !token.Icmp( "cylinder" ) ) {
+			}
+			else if (!token.Icmp("cylinder")) {
 				stage->distributionType = PDIST_CYLINDER;
-			} else if ( !token.Icmp( "sphere" ) ) {
+			}
+			else if (!token.Icmp("sphere")) {
 				stage->distributionType = PDIST_SPHERE;
-			} else {
+			}
+			else {
 				src.Error("bad distribution type: %s\n", token.c_str());
 			}
 			ParseParms(src, stage->distributionParms, sizeof(stage->distributionParms) / sizeof(stage->distributionParms[0]));
@@ -282,9 +476,11 @@ idParticleStage *idDeclParticle::ParseParticleStage( idLexer &src ) {
 			src.ReadToken(&token);
 			if (!token.Icmp("cone")) {
 				stage->directionType = PDIR_CONE;
-			} else if ( !token.Icmp( "outward" ) ) {
+			}
+			else if (!token.Icmp("outward")) {
 				stage->directionType = PDIR_OUTWARD;
-			} else {
+			}
+			else {
 				src.Error("bad direction type: %s\n", token.c_str());
 			}
 			ParseParms(src, stage->directionParms, sizeof(stage->directionParms) / sizeof(stage->directionParms[0]));
@@ -295,15 +491,20 @@ idParticleStage *idDeclParticle::ParseParticleStage( idLexer &src ) {
 			src.ReadToken(&token);
 			if (!token.Icmp("view")) {
 				stage->orientation = POR_VIEW;
-			} else if ( !token.Icmp( "aimed" ) ) {
+			}
+			else if (!token.Icmp("aimed")) {
 				stage->orientation = POR_AIMED;
-			} else if ( !token.Icmp( "x" ) ) {
+			}
+			else if (!token.Icmp("x")) {
 				stage->orientation = POR_X;
-			} else if ( !token.Icmp( "y" ) ) {
+			}
+			else if (!token.Icmp("y")) {
 				stage->orientation = POR_Y;
-			} else if ( !token.Icmp( "z" ) ) {
+			}
+			else if (!token.Icmp("z")) {
 				stage->orientation = POR_Z;
-			} else {
+			}
+			else {
 				src.Error("bad orientation type: %s\n", token.c_str());
 			}
 			ParseParms(src, stage->orientationParms, sizeof(stage->orientationParms) / sizeof(stage->orientationParms[0]));
@@ -314,13 +515,17 @@ idParticleStage *idDeclParticle::ParseParticleStage( idLexer &src ) {
 			src.ReadToken(&token);
 			if (!token.Icmp("standard")) {
 				stage->customPathType = PPATH_STANDARD;
-			} else if ( !token.Icmp( "helix" ) ) {
+			}
+			else if (!token.Icmp("helix")) {
 				stage->customPathType = PPATH_HELIX;
-			} else if ( !token.Icmp( "flies" ) ) {
+			}
+			else if (!token.Icmp("flies")) {
 				stage->customPathType = PPATH_FLIES;
-			} else if ( !token.Icmp( "spherical" ) ) {
+			}
+			else if (!token.Icmp("spherical")) {
 				stage->customPathType = PPATH_ORBIT;
-			} else {
+			}
+			else {
 				src.Error("bad path type: %s\n", token.c_str());
 			}
 			ParseParms(src, stage->customPathParms, sizeof(stage->customPathParms) / sizeof(stage->customPathParms[0]));
@@ -399,13 +604,21 @@ idParticleStage *idDeclParticle::ParseParticleStage( idLexer &src ) {
 			src.ReadToken(&token);
 			if (!token.Icmp("world")) {
 				stage->worldGravity = true;
-			} else {
+			}
+			else {
 				src.UnreadToken(&token);
 			}
 			stage->gravity = src.ParseFloat();
 			continue;
 		}

+#ifdef PREY
+		if (!token.Icmp("lowSkippable")) {
+			stage->lowSkippable = src.ParseBool();
+			continue;
+		}
+#endif
+
 		src.Error("unknown token %s\n", token.c_str());
 	}

@@ -430,6 +643,11 @@ bool idDeclParticle::Parse( const char *text, const int textLength ) {

 	depthHack = 0.0f;

+#ifdef PREY
+	bool boundsSpecified = false;
+	bounds.Clear();
+#endif
+
 	while (1) {
 		if (!src.ReadToken(&token)) {
 			break;
@@ -455,11 +673,37 @@ bool idDeclParticle::Parse( const char *text, const int textLength ) {
 			continue;
 		}

+#ifdef PREY
+		if (!token.Icmp("bounds")) {
+			bounds[0][0] = src.ParseFloat();
+			bounds[0][1] = src.ParseFloat();
+			bounds[0][2] = src.ParseFloat();
+
+			bounds[1][0] = src.ParseFloat();
+			bounds[1][1] = src.ParseFloat();
+			bounds[1][2] = src.ParseFloat();
+
+			boundsSpecified = true;
+			continue;
+		}
+#endif
+
 		src.Warning("bad token %s", token.c_str());
 		MakeDefault();
 		return false;
 	}

+#ifdef PREY
+	//
+	// Prey declarations may carry explicit bounds.
+	// If no bounds were present, or the cvar asks for recalculation,
+	// recalculate them and rebuild the source text with a bounds line.
+	//
+	if (!boundsSpecified || cvarSystem->GetCVarBool("r_recalcParticleBounds")) {
+		CalcBounds();
+		RebuildTextSource();
+	}
+#else
 	//
 	// calculate the bounds
 	//
@@ -472,10 +716,39 @@ bool idDeclParticle::Parse( const char *text, const int textLength ) {
 	if (bounds.GetVolume() <= 0.1f) {
 		bounds = idBounds(vec3_origin).Expand(8.0f);
 	}
+#endif

 	return true;
 }

+#ifdef PREY
+/*
+================
+idDeclParticle::CalcBounds
+
+HUMANHEAD bjk
+================
+*/
+void idDeclParticle::CalcBounds(void) {
+	bounds.Clear();
+
+	for (int i = 0; i < stages.Num(); i++) {
+#ifdef PARTICLE_BOUNDS
+		idDrawVert particleVerts[MAX_PARTICLES * 4]; // see note below
+		GetStageBounds(stages[i], particleVerts);
+#else
+		GetStageBounds(stages[i]);
+#endif
+
+		bounds.AddBounds(stages[i]->bounds);
+	}
+
+	if (bounds.GetVolume() <= 0.1f) {
+		bounds = idBounds(vec3_origin).Expand(8.0f);
+	}
+}
+#endif
+
 /*
 ================
 idDeclParticle::FreeData
@@ -744,6 +1017,9 @@ void idParticleStage::Default() {
 	spawnBunching = 1.0f;
 	particleLife = 1.5f;
 	timeOffset = 0.0f;
+#ifdef PREY
+	lowSkippable = false;
+#endif
 	deadTime = 0.0f;
 	distributionType = PDIST_RECT;
 	distributionParms[0] = 8.0f;
@@ -39,11 +39,20 @@ If you have questions concerning this license or the applicable additional terms

 class idParticleParm {
 public:
-							idParticleParm( void ) { table = NULL; from = to = 0.0f; }
+	idParticleParm(void) {
+		table = NULL;
+		from = to = 0.0f;
+#ifdef PREY
+		randomp = 0.0f;
+#endif
+	}

 	const idDeclTable* table;
 	float					from;
 	float					to;
+#ifdef PREY
+	float					randomp;		// HUMANHEAD bjk
+#endif

 	float					Eval(float frac, idRandom& rand) const;
 	float					Integrate(float frac, idRandom& rand) const;
@@ -91,7 +100,6 @@ typedef struct {
 	idVec3					origin;				// dynamic smoke particles can have individual origins and axis
 	idMat3					axis;

-
 	float					age;				// in seconds, calculated as fraction * stage->particleLife
 	idRandom				originalRandom;		// needed so aimed particles can reset the random for another origin calculation
 	float					animationFrameFrac;	// set by ParticleTexCoords, used to make the cross faded version
@@ -185,6 +193,10 @@ public:
 	float					boundsExpansion;	// user tweak to fix poorly calculated bounds

 	idBounds				bounds;				// derived
+
+#ifdef PREY
+	bool					lowSkippable;		// HUMANHEAD bjk
+#endif
 };


@@ -207,7 +219,20 @@ public:

 private:
 	bool					RebuildTextSource(void);
+
+#ifdef PREY
+	void					CalcBounds(void);		// HUMANHEAD bjk
+
+#	ifdef PARTICLE_BOUNDS
+	void					GetStageBounds(idParticleStage* stage, idDrawVert* particleVerts);
+#	else
 	void					GetStageBounds(idParticleStage* stage);
+#	endif
+
+#else
+	void					GetStageBounds(idParticleStage* stage);
+#endif
+
 	idParticleStage* ParseParticleStage(idLexer& src);
 	void					ParseParms(idLexer& src, float* parms, int maxParms);
 	void					ParseParametric(idLexer& src, idParticleParm* parm);