?? ch19p1_grammar.txt
字號:
BNF Grammar for Particle System Script:
Script ::= <ParticleSystem>
ParticleSystem ::= ParticleSystem <VersionNumber> <Name> "{" {<SysProperty>} {<EventSequence>} "}"
VersionNumber ::= RealNumber
Name ::= "{ --< char >-- }"
Number ::= <RealNumber> | Random(<RealNumber>,<RealNumber>)
RealNumber ::= --< float >--
SysProperty ::= <VectorProperty> = <Vector>
SysVectorProperty ::= Position
Vector ::= XYZ(<Number>,<Number>,<Number>)
EventSequence ::= EventSequence <Name> "{" {<SeqProperty>} {Event} "}"
SeqProperty ::= <SeqNumberProperty> = <Number> |
<SeqVectorProperty> = <Vector> |
<SysAlphaBlendModeProperty> = <AlphaBlendMode> |
Texture = <Name>
SeqNumberProperty ::= EmitRate | LifeTime | NumParticles
SeqVectorProperty ::= SpawnDir | EmitRadius | Gravity
SeqAlphaBlendModeProperty ::= SourceBlendMode | DestBlendMode
AlphaBlendMode ::= D3DBLEND_ZERO | D3DBLEND_ONE | D3DBLEND_SRCCOLOR |
D3DBLEND_INVSRCCOLOR | D3DBLEND_SRCALPHA |
D3DBLEND_INVSRCALPHA | D3DBLEND_DESTALPHA |
D3DBLEND_INVDESTALPHA | D3DBLEND_DESTCOLOR |
D3DBLEND_INVDESTCOLOR | D3DBLEND_SRCALPHASAT
Event ::= <Time> <ParticleNumericProp> = <Number> |
<Time> <ParticleColorProp> = <Color> |
<Time> <ParticleVectorProp> = <Vector> |
Time ::= [Fade so] at <Number> | initial | [Fade so] Final
ParticleNumericProp ::= Size | EventTimer | RedColor | GreenColor | BlueColor | Alpha
ParticleVectorProp ::= Velocity
ParticleColorProp ::= Color
Color ::= RGBA(<Number>,<Number>,<Number>,<Number>)
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