edit by lty4ever

Property Data Type

• Keyword def can be used as Global Default Value

• Vector : ([X],[Y]) 0 -> (0,0) [dd]% -> Percentage of Screen
• Double : Number
• Boolean : true(t) / false(f)
• String : Text

• Shortened Name can be used eg. glo -> GLOBE.png/ bh -> BLACK_HOLE.png

Entity’s Property

• Vector

1. loc = Location = 0
2. vel = Velocity = 0
3. acc = Acceleration = 0
4. siz = Size = (100,100)

• Double

1. mas = Mass = 10
2. elc = Elasticity = 1
3. trc = Tracing Position Count = 20
4. mot = Motion(Displacement) Scale = 0.5

• Boolean

1. mtg = Mutual Gravity (Common Gravity) = false true : calculate through G * m1 * m2 / r^2 false : Constants Gravity only in reference to the mass of gravity source.
2. gvig = Ignore Self-Gravity = false true : Ignore gravitation release from the entity false : attract other entities (exert force toward the source)
3. spt = Susceptibility = false true : Can be affected by other entities’ force false : Extremely stable, unaffectable
4. trcv = Trace Visibility = false true : Track the position of the entity and show on the stage
5. velv = Velocity Visibility = false true : Display the velocity’s direction and relative scale on the stage
6. acv = Acceleration Visibility = false true : Display the acceleration’s direction and relative scale on the stage
7. mkv = Mark Visibility = false true : Display the frame (Component Scale) of the entity on the stage
8. undrg = Undraggable = false
9. rcvg = Receive Global(Stage’s) Gravity = false
10. rcvf = Receive Global(Stage’s) Friction = false

• String

1. tag = Tag = “ent@[hashCode]”
2. img = Image = “glo”

Stage Property

• Get access to stage’s property through tag stg

• Vector

1. envg = Environmental Gravity = (0,2.4)

• Double

1. fric = Environmental Friction = -0.02

• Boolean

1. bnd = Boundary = false true : Place a Boundary Round the Screen
2. bak = Background = false true : Place a half-transparent background false : Remove the background.

Global Property

• Get access to global property through tag def

• String

1. path = Default relative path of the Resource Directory = “”

Mapping of Property Name & value

• Space can not appear in the Mapping Statement propertyName=[value],propertyName=[value],...

Command

• tag = entityTag / stg(Stage) / def(Global Property or Default Value) / all(All entities)

1. add [mapping of propertyName&value] Add an entity with specific property(s) to stage
2. [tag].set [mapping of propertyName&value] Set the property(s) of specific entity(s)/stage
3. [entityTag].del Delete specific entity(s) from the stage
4. [tag].get [propertyNameList] Print out specific property(s) of entity(s)/stage
5. preset [px file path] execute all the command in the px file
6. start Enable the timer to tick
7. pause disable the timer
8. end exit the simulator

Directory Structure

1. ./RES Resource Directory
2. ./RES/IMG Image Directory
3. ./RES/PRS Preset Directory

Examples

1. def.set vel=(10,10) Set Global Default Velocity to (10,10)
2. add tag=e1,vel=def,img=bh Add an entity with tag of “e1”, image of blackhole and default velocity
3. stg.set bnd=t,delta=20 Set a Boundary around the Screen and change interval of the timer to 20ms
4. add tag=e2,img=def,loc=(50%,50%) Add an entity with tag of “e1”, default image and location at the Center of the Screen
5. preset traceAll.px Read command in the preset File traceAll.px (all.set trcv=t)
6. all.set vel+=(10,10),siz+=(10,10) Add (10,10) to all the entities’ size and velocity
7. all.del Delete all the entities from the stage