// Common rain particle effect

// Virtual system which holds parameters for drips that hit surface
// Note: not all parameters can be assigned to a particle, many are system-global (e.g. m_fFrameRate)
// Warning: you can cause it to shut down like any other system (by combination of flags, frames, color, etc.)
virtual inactive CPSCustom DripSplashSystem
{
	//"fParticleScaleMin"	"0.0625"
	"fParticleScaleMin"		"0.125"
	"fParticleScaleMax"		"0.25"
	"iParticleFlags"		"0"
	"iTraceFlags"			"8"
	"iMaxParticles"			"0"// This will disable the system so it won't consume computing resources
	"fParticleSpeedMin"		"0.0"
	"fParticleSpeedMax"		"0.0"
	"fParticleWeight"		"0.0"
	"iStartType"			"0"// PSSTARTTYPE_POINT = 0,
	"iMovementType"			"0"
	"vDirection"			"0 0 0"
	"fScale"				"1.0"
	"fScaleDelta"			"0.25"
	"fFrameRate"			"24"
	"Color4b"				"255 255 255 191"
	"ColorMax4b"			"255 255 255 255"
	"ColorDelta4f"			"0.0 0.0 0.0 -0.1"
	"iRenderMode"			"5"
	"iDrawContents"			"0"
	"iDoubleSided"			"0"
	"iFlags"				"1296"// 16+256+1024
	"iFollowFlags"			"64"
	"iFollowAttachment"		"65535"
	"szTexture"				"sprites/wsplash3.spr"
}

// Water circles
virtual inactive CPSCustom DripCircleSystem
{
	"iMaxParticles"			"0"
	"fParticleSpeedMin"		"0.0"
	"fParticleSpeedMax"		"0.0"
	"fParticleWeight"		"0.0"
	"iStartType"			"0"
	"iMovementType"			"0"
	"vDirection"			"0 0 1"
	"fScale"				"0.125"
	"fScaleDelta"			"40.0"
	"fFrameRate"			"0"
	"Color4b"				"255 255 255 191"
	"ColorMax4b"			"255 255 255 255"
	"ColorDelta4f"			"0.0 0.0 0.0 -0.75"
	"iDoubleSided"			"1"
	"iFlags"				"1304"// 8+16+256+1024
	"iFollowFlags"			"64"
	"iFollowAttachment"		"65535"
	"szTexture"				"sprites/rain_s.spr"
}

// The main emitting system
CPSCustom DripSystem
{
	// Brush contents in which particles cannot exist. Calculate as follows: m_iDrawContents |= (1 << abs(CONTENTS_WATER));
	//"iDestroyContents"	"0"
	// Particle start scale range
	//"fParticleScaleMin"		"0.0625"
	//"fParticleScaleMax"		"0.125"
	"fParticleScaleMin"		"0.125"
	"fParticleScaleMax"		"0.25"
	// If defined, particles start randomly inside this sphere relatively to host entity origin
	"fStartRadiusMin"		"0"
	"fStartRadiusMax"		"0"
	// If defined (and no radius), particles start randomly inside this box relatively to host entity origin
	//"vStartMins"			"-4096 -4096 256"
	//"vStartMaxs"			"4096 4096 1536"
	// Spread vector (for directed movement)
	"vSpread"				"0 0 0"
	// Destination point (absolute coordinates)
	// vDestination			"0 0 0"
	// Acceleration range
	//"vAccelMin"			"0 0 0"
	//"vAccelMax"			"0 0 0"
	// Particle velocity.x = vDirection.x*RANDOM_FLOAT(fParticleSpeedMin, fParticleSpeedMax) + vSinVel.x*sin(t+i) + vCosVel.x*cos(t+i);
	"vSinVel"				"0 0 0"
	"vCosVel"				"0 0 0"
	// Particle acceleration.x += vSinAccel.x*sin(t+i) + vCosAccel.x*cos(t+i);
	//"vSinAccel"			"4 0 0"
	//"vCosAccel"			"0 4 0"
	// Custom Particle flags
	// PSCUSTOM_PFLAG_ORIENTED_START			1
	// PSCUSTOM_PFLAG_ORIENTED_HIT_SURFACE		2
	// PSCUSTOM_PFLAG_ORIENTED_HIT_LIQUID		4
	// PSCUSTOM_PFLAG_LOOPFRAMES_HIT_SURFACE	8
	// PSCUSTOM_PFLAG_LOOPFRAMES_HIT_LIQUID		16
	// PSCUSTOM_PFLAG_HIT_FADEOUT				32
	"iParticleFlags"		"4"
	// Trace flags (defines clipping behavior), 0 is the slowest option.
	// PM_STUDIO_IGNORE			1// Skip studio models (faster)
	// PM_STUDIO_BOX			2// Use boxes for non-complex studio models (even in traceline) (faster)
	// PM_GLASS_IGNORE			4// Ignore entities with non-normal rendermode
	// PM_WORLD_ONLY			8// Only trace against the world (fastest)
	"iTraceFlags"			"9"
	// Number of particles this system can allocate. "0" will disable the system and make it virtual so it can be used in another systems.
	"iMaxParticles"			"2048"
	// Emission rate, particles per second. "0" will make the system try to calculate it automatically (not always reliable).
	"iEmitRate"				"0"
	// Linear speed range
	"fParticleSpeedMin"		"128.0"
	"fParticleSpeedMax"		"160.0"
	// Weight for physics, gravity
	"fParticleWeight"		"1.0"
	// Size (radius) of particle's collision volume
	"fParticleCollisionSize"	"1.0"
	// Right now only used for automatic calculation of emission rate
	//"fParticleLife"			"1.0"
	// Particle start type:
	// PSSTARTTYPE_POINT = 0,
	// PSSTARTTYPE_SPHERE,
	// PSSTARTTYPE_BOX,
	// PSSTARTTYPE_LINE,
	// PSSTARTTYPE_ENTITYBBOX,
	// PSSTARTTYPE_CYLINDER
	"iStartType"			"4"
	// Particle movement type:
	// PSMOVTYPE_DIRECTED = 0,
	// PSMOVTYPE_OUTWARDS,// explosion
	// PSMOVTYPE_INWARDS,// implosion
	// PSMOVTYPE_RANDOM
	"iMovementType"			"0"
	// Direction for movement type 0 (should be normalized i.e. have length of 1.0)
	"vDirection"			"0 0 -1"
	// Overrides internal value. With (0,0,0) bounding box coordinates become absolute. << IMPORTANT
	"vOrigin"				"0 0 0"
	// System velocity (ignored because system moves with its host entity)
	//"vVelocity"			"0 0 0"
	// Useless for now
	//"vAngles"				"0 0 0"
	// Added every frame
	//"anglesdelta"
	// Offset from host entity origin (rotated according to entity orientation)
	"vOffset"				"0 0 0"
	// Relative scale
	"fScale"				"1.0"
	// Added every frame
	"fScaleDelta"			"0.0"
	// Starting frame (useful with frame rate 0)
	"fFrame"				"0"
	// Can be 0 to use specific frame of a sprite
	"fFrameRate"			"20"
	// Initial color (range minimum)
	"Color4b"				"255 255 255 191"
	// Initial color (range maximum) Particle color = RANDOM(Color4b, ColorMax4b)
	"ColorMax4b"			"255 255 255 255"
	// Added every frame
	"ColorDelta4f"			"0.0 0.0 0.0 0.0"
	// Non-particle System or Particle dimensions (see also flag ABSOLUTESIZE)
	//"fSizeX"				"0"
	//"fSizeY"				"0"
	// Bounce, if collisions are enabled (velocity *= fBounceFactor) or move along surface if "-1".
	"fBounceFactor"			"0"
	// Friction, used only when m_fBounceFactor == -1
	"fFriction"				"0"
	// Standard HL render mode
	"iRenderMode"			"5"
	// Standard HL render fx (unused)
	//"rendereffects"		"0"
	// Brush contents in which particles can exist. Calculate as follows: m_iDrawContents |= (1 << abs(CONTENTS_WATER));
	"iDrawContents"			"0"
	// If true, faces are drawn double-sided
	"iDoubleSided"			"0"
	// System will be active and drawn if cl_particles >= iFxLevel
	"iFxLevel"				"1"
	// System flags (sum of all desired flags)
	// RENDERSYSTEM_FLAG_RANDOMFRAME			1   // random frame sequence
	// RENDERSYSTEM_FLAG_CLIPREMOVE				2   // remove upon touching architecture
	// RENDERSYSTEM_FLAG_NOCLIP					4   // persist inside architecture
	// RENDERSYSTEM_FLAG_LOOPFRAMES				8   // don't remove after displaying last frame (when no life time set)
	// RENDERSYSTEM_FLAG_ADDPHYSICS				16  // interact with world (bounce upon collisions, etc.)
	// RENDERSYSTEM_FLAG_DRAWALWAYS				32  // ignore visibility checks (draw behind walls, outside visible area)
	// RENDERSYSTEM_FLAG_HARDSHUTDOWN			64	// don't wait/fade, remove instantly
	// RENDERSYSTEM_FLAG_SIMULTANEOUS			128 // emit all particles at start
	// RENDERSYSTEM_FLAG_ADDGRAVITY				256 // add world gravity to system acceleration
	// RENDERSYSTEM_FLAG_ZROTATION				512 // rotate around Z axis only (when parallel to viewport)
	// RENDERSYSTEM_FLAG_NODRAW					1024// don't draw (but still update normally)
	// RENDERSYSTEM_FLAG_ABSOLUTESIZE			2048// don't take size from texture
	// RENDERSYSTEM_FLAG_STARTRANDOMFRAME		4096// start at random frame, continue according to other settings
	// RENDERSYSTEM_FLAG_UPDATEOUTSIDEPVS		8192// update even when system or emitter is outside PVS
	// 8+16+256+512 // env_rain: z-rotation was previously set manually via entity flag
	"iFlags"				"792"
	// CRenderSystem follow flags (sum of all desired flags), ICNF == "if cannot follow"
	// RENDERSYSTEM_FFLAG_ICNF_KEEPSEARCHING	0// default: keep searching
	// RENDERSYSTEM_FFLAG_ICNF_REMOVE			1// remove if can not find entity
	// RENDERSYSTEM_FFLAG_ICNF_STAYANDFORGET	2// stop copying origin and just stay at last coordinates
	// RENDERSYSTEM_FFLAG_ICNF_NODRAW			4// hide if can not find entity
	// RENDERSYSTEM_FFLAG_CLIPREMOVE			8// remove upon touching architecture (even if entity still exists)
	// RENDERSYSTEM_FFLAG_USEOFFSET				16// system origin = entity origin + offset
	// RENDERSYSTEM_FFLAG_NOANGLES				32// don't copy angles
	// RENDERSYSTEM_FFLAG_DONTFOLLOW			64// don't copy origin even if entity is found
	// RENDERSYSTEM_FFLAG_DIRECTTOTARGET		128// PSMOVTYPE_TOWARDSPOINT: entity is our destination
	// 32
	"iFollowFlags"			"32"
	// Studio model attachment if host entity has it
	"iFollowAttachment"		"65535"
	// Sprite path relative to game mod directory in forward slash (URL/UNIX) format
	"szTexture"				"sprites/rain.spr"
	// System (name) from which parameters will be initialized to a particle that hits liquid
	"szSystemOnHitLiquid"	"DripCircleSystem"
	// System (name) from which parameters will be initialized to a particle that hits solid surface
	"szSystemOnHitSurface"	"DripSplashSystem"
	// System life time in seconds
	//"fLifeTime"				"0.0"
}