Scripting: Difference between revisions

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;string
;string
The internal name of the visionaire object. This is the name which is used to access the object and also shown in the editor. This name is not shown to the user in the game - therefor always a language dependent text is used.
The internal name of the visionaire object. This is the name which is used to access the object and also shown in the editor. This name is not shown to the user in the game - therefor always a language dependent text is used.
=== setName ===
Sets the internal name of the visionaire object.
Lua Syntax:
<pre>setName(string)</pre>
*Arguments
;string
The new internal name.
=== setValue ===
Sets a field of the visionaire object. Note that only fields which are marked as 'Scriptable' in the Visionaire data structure documentation should be modified. If the field is not marked as scriptable then changes to this field are often not recognized (or sometimes not immediately). Further changes to these fields will usually not be stored in savegames for performance reasons.
Lua Syntax:
<pre>setValue(number, VARIANT, {flags=1, index = number})</pre>
* Arguments
;number
Data field which will be set.
;VARIANT
Value to set. The type of the value must match the type of the field. E.g. if the field type is t_int then the value type must be a number (int). If the field type is t_rect then the value type must be a table with the entries "x", "y", "width" and "height".
* Flags
;index
If specified then an existing list element at the given index will be modified. In this case the field type must be of a list-type (t_vint, t_links, ...).
* Examples
local tom = getObject("Characters[Tom]")
-- set character "tom" to position 100,300
tom:setValue(VCharacterPosition, {x=100,y=300})
local cond = getObject("Conditions[TV is on]")
cond:setValue(VConditionValue, true)
-- let the "dog" follow the current character
local dog = getObject("Characters[dog]")
local currentCharacter = getObject("Game.CurrentCharacter")
dog:setValue(VCharacterFollowCharacter, currentCharacter)


=== clearLink ===
=== clearLink ===
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The field which specifies a link to be cleared. The field type must be t_link.
The field which specifies a link to be cleared. The field type must be t_link.


=== getInt ===
=== getBool ===


Lua Syntax:
Lua Syntax:
<pre>getInt(number)</pre>
<pre>getBool(number)</pre>
*Arguments
*Arguments
;number
;number
The field which specifies a number value. The field type must be t_int.
The field which specifies a boolean value. The field type must be t_bool.
*Return Values
*Return Values
;number
;boolean
Current value of specified field.
Current value of specified field.
Example
local direction = getObject("Characters[Mother]"):getInt(VCharacterDirection)


=== getFloat ===
=== getFloat ===
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Current value of specified field.
Current value of specified field.


=== getBool ===
=== getInt ===


Lua Syntax:
Lua Syntax:
<pre>getBool(number)</pre>
<pre>getInt(number)</pre>
*Arguments
*Arguments
;number
;number
The field which specifies a boolean value. The field type must be t_bool.
The field which specifies a number value. The field type must be t_int.
*Return Values
*Return Values
;boolean
;number
Current value of specified field.
Current value of specified field.


=== getStr ===
Example
local direction = getObject("Characters[Mother]"):getInt(VCharacterDirection)
 
=== getLink ===
 
Lua Syntax:
<pre>getLink(number)</pre>
*Arguments
;number
The field which specifies a link. The field type must be t_link.
*Return Values
;userdata (VisionaireObject)
The linked object or an empty object if no object is linked for this field.
 
=== getLinks ===


Lua Syntax:
Lua Syntax:
<pre>getStr(number)</pre>
<pre>getLinks(number)</pre>
*Arguments
*Arguments
;number
;number
The field which specifies a string value. The field type must be t_string.
The field which specifies a link list. The field type must be t_links.
*Return Values
*Return Values
;string
;table (list of VisionaireObject)
Current value of specified field.
Table containing all linked visionaire objects.


=== getPath ===
=== getPath ===
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Current value of specified field. The path will be returned in unix format ('/' for directories) and relative to the .ved file.
Current value of specified field. The path will be returned in unix format ('/' for directories) and relative to the .ved file.


=== getSprite ===
=== getPaths ===


Lua Syntax:
Lua Syntax:
<pre>getStr(number)</pre>
<pre>getPaths(number)</pre>
*Arguments
*Arguments
;number
;number
The field which specifies a sprite value. The field type must be t_sprite.
The field which specifies a path list. The field type must be t_vpath.
*Return Values
*Return Values
;table
;table
A table representing the value of the specified field. The table contains the entries '''path''', '''x''', '''y''', '''cutting''' (t_rect) and '''transparency'''.
Table with t_path entries representing the specified field.


=== getPoint ===
=== getPoint ===
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;table
;table
A table representing the value of the specified field. The table contains the entries '''x''' and '''y'''.
A table representing the value of the specified field. The table contains the entries '''x''' and '''y'''.
=== getPoints ===
Lua Syntax:
<pre>getPoints(number)</pre>
*Arguments
;number
The field which specifies a point list. The field type must be t_vpoint.
*Return Values
;table
Table with t_point entries representing the specified field.


=== getRect ===
=== getRect ===
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A table representing the value of the specified field. The table contains the entries '''x''', '''y''', '''width''' and '''height'''.
A table representing the value of the specified field. The table contains the entries '''x''', '''y''', '''width''' and '''height'''.


=== getLink ===
=== getRects ===
 
Lua Syntax:
<pre>getRects(number)</pre>
*Arguments
;number
The field which specifies a rectangle list. The field type must be t_vrect.
*Return Values
;table (list of table with '''x''', '''y''', '''width''' and '''height''' entries)
Table with t_rect entries representing the specified field.
 
=== getSprite ===


Lua Syntax:
Lua Syntax:
<pre>getLink(number)</pre>
<pre>getStr(number)</pre>
*Arguments
*Arguments
;number
;number
The field which specifies a link. The field type must be t_link.
The field which specifies a sprite value. The field type must be t_sprite.
*Return Values
*Return Values
;userdata (VisionaireObject)
;table
The linked object or an empty object if no object is linked for this field.
A table representing the value of the specified field. The table contains the entries '''path''', '''x''', '''y''', '''cutting''' (t_rect) and '''transparency'''.


=== getLinks ===
=== getSprites ===


Lua Syntax:
Lua Syntax:
<pre>getLinks(number)</pre>
<pre>getSprites(number)</pre>
*Arguments
*Arguments
;number
;number
The field which specifies a link list. The field type must be t_links.
The field which specifies a sprite list. The field type must be t_vsprite.
*Return Values
*Return Values
;table (list of VisionaireObject)
;table
Table containing all linked visionaire objects.
Table with t_sprite entries representing the specified field.


=== getPoints ===
=== getStr ===


Lua Syntax:
Lua Syntax:
<pre>getPoints(number)</pre>
<pre>getStr(number)</pre>
*Arguments
*Arguments
;number
;number
The field which specifies a point list. The field type must be t_vpoint.
The field which specifies a string value. The field type must be t_string.
*Return Values
*Return Values
;table (list of VisionaireObject)
;string
Table containing all linked visionaire objects.
Current value of specified field.
 
=== setName ===
 
Sets the internal name of the visionaire object.
 
Lua Syntax:
<pre>setName(string)</pre>
*Arguments
;string
The new internal name.
 
=== setValue ===
 
Sets a field of the visionaire object. Note that only fields which are marked as 'Scriptable' in the Visionaire data structure documentation should be modified. If the field is not marked as scriptable then changes to this field are often not recognized (or sometimes not immediately). Further changes to these fields will usually not be stored in savegames for performance reasons.
 
Lua Syntax:
<pre>setValue(number, VARIANT, {flags=1, index = number})</pre>
* Arguments
;number
Data field which will be set.
;VARIANT
Value to set. The type of the value must match the type of the field. E.g. if the field type is t_int then the value type must be a number (int). If the field type is t_rect then the value type must be a table with the entries "x", "y", "width" and "height".
* Flags
;index
If specified then an existing list element at the given index will be modified. In this case the field type must be of a list-type (t_vint, t_links, ...).
 
* Examples
local tom = getObject("Characters[Tom]")
-- set character "tom" to position 100,300
tom:setValue(VCharacterPosition, {x=100,y=300})
 
local cond = getObject("Conditions[TV is on]")
cond:setValue(VConditionValue, true)
 
-- let the "dog" follow the current character
local dog = getObject("Characters[dog]")
local currentCharacter = getObject("Game.CurrentCharacter")
dog:setValue(VCharacterFollowCharacter, currentCharacter)


== Exported objects ==
== Exported objects ==

Revision as of 19:07, 27 December 2008

General

Visionaire 3.0 comes with a Scripting language which is a combination of Lua (http://www.lua.org) and a Visionaire Object Model. The object model is used to access the Visionaire data structure in a convinient way. Almost every instance in Visionaire is represented as an object (e.g. scene, character, interface, ...) which can be manipulated through the scripting language.

Online documentation about scripting Language:

Visionaire Object Model

All objects can be accessed and manipulated through the scripting language. All objects of the same type (e.g. scene or button) are stored in one table. The properties of an object can be accessed by defined fields for the specific table. All objects and its fields are documented in Visionaire Data Structure.

The field types of the data structure are mapped to Lua types in the following way:

Field Type

Lua Type

t_link

userdata (VisionaireObject) or string which describes the object path. See object access for description of the object path.

t_links

table (array) with Visionaire Objects (userdata or string, see t_link above) elements, each entry referencing one Visionaire Object.

t_int

number (integer)

t_float

number

t_bool

number (boolean)

t_point

table (with elements "x" and "y")

t_rect

table (with elements "x", "y", "width" and "height")

t_string

string

t_path

string

t_sprite

table (with element "path" and optional elements "x", "y", "cutting" (t_rect) and "transparent" (t_point))

t_vint

table with number (integer) elements

t_vfloat

table with number (float) elements

t_vpoint

table with t_point elements

t_vrect

table with t_rect elements

t_vstring

table with string elements

t_vpath

table with t_path elements

t_vsprite

table with t_sprite elements

VisionaireObject

Every instance of an object of the visionaire data structure is a VisionaireObject. With this object it is possible to read and manipulate the attributes of all objects.

The following methods are supported on a VisionaireObject:

isEmpty

Lua Syntax:

isEmpty()
  • Return Values
boolean

true if the object is empty, i.e. the VisionaireObject does not reference an object of the visionaire data structure.

isAnyObject

Lua Syntax:

isAnyObject()
  • Return Values
boolean

true if the object represents any object (isEmpty would return true because the object does not represent an object of the data structure). This is needed for actions where the user can set "[Any item]" for actions which should be executed in case an item was used.

getId

Lua Syntax:

getId()
  • Return Values
table

A table with the fields tableId and id returning the table id and object id of the VisionaireObject.

getParent

Lua Syntax:

getParent()
  • Return Values
VisionaireObject

The parent object for this object. An object has always a parent which contains it - only the game object has no parent.

getObject

Lua Syntax:

getObject(path)
  • Arguments
path

Path to a Visionaire Object. The path has to start with a dot '.' and then a field name (field type must either be t_link or t_links). For t_links fields you must specify an object name in brackets ('[',']'). For t_link fields there are no brackets. The path is relative to this object. See object access for description of the object path.

  • Return Values
userdata (VisionaireObject)

The found visionaire object or an empty object if no object was found.

  • Example:
local scene = getObject("Scenes[Bedroom]")
local deskCond = scene:getObject(".SceneObjects[Desk].ObjectCondition")

getName

Lua Syntax:

getName()
  • Return Values
string

The internal name of the visionaire object. This is the name which is used to access the object and also shown in the editor. This name is not shown to the user in the game - therefor always a language dependent text is used.

clearLink

Removes a link from the visionaire object. This is only a convenient method and has the same effect as calling setValue with the field and emptyObject.

Lua Syntax:

clearLink(number)
  • Arguments
number

The field which specifies a link to be cleared. The field type must be t_link.

getBool

Lua Syntax:

getBool(number)
  • Arguments
number

The field which specifies a boolean value. The field type must be t_bool.

  • Return Values
boolean

Current value of specified field.

getFloat

Lua Syntax:

getFloat(number)
  • Arguments
number

The field which specifies a number value. The field type must be t_float.

  • Return Values
number

Current value of specified field.

getInt

Lua Syntax:

getInt(number)
  • Arguments
number

The field which specifies a number value. The field type must be t_int.

  • Return Values
number

Current value of specified field.

Example

local direction = getObject("Characters[Mother]"):getInt(VCharacterDirection)

getLink

Lua Syntax:

getLink(number)
  • Arguments
number

The field which specifies a link. The field type must be t_link.

  • Return Values
userdata (VisionaireObject)

The linked object or an empty object if no object is linked for this field.

getLinks

Lua Syntax:

getLinks(number)
  • Arguments
number

The field which specifies a link list. The field type must be t_links.

  • Return Values
table (list of VisionaireObject)

Table containing all linked visionaire objects.

getPath

Lua Syntax:

getPath(number)
  • Arguments
number

The field which specifies a path value. The field type must be t_path.

  • Return Values
string

Current value of specified field. The path will be returned in unix format ('/' for directories) and relative to the .ved file.

getPaths

Lua Syntax:

getPaths(number)
  • Arguments
number

The field which specifies a path list. The field type must be t_vpath.

  • Return Values
table

Table with t_path entries representing the specified field.

getPoint

Lua Syntax:

getPoint(number)
  • Arguments
number

The field which specifies a point value. The field type must be t_point.

  • Return Values
table

A table representing the value of the specified field. The table contains the entries x and y.

getPoints

Lua Syntax:

getPoints(number)
  • Arguments
number

The field which specifies a point list. The field type must be t_vpoint.

  • Return Values
table

Table with t_point entries representing the specified field.

getRect

Lua Syntax:

getRect(number)
  • Arguments
number

The field which specifies a rectangle value. The field type must be t_rect.

  • Return Values
table

A table representing the value of the specified field. The table contains the entries x, y, width and height.

getRects

Lua Syntax:

getRects(number)
  • Arguments
number

The field which specifies a rectangle list. The field type must be t_vrect.

  • Return Values
table (list of table with x, y, width and height entries)

Table with t_rect entries representing the specified field.

getSprite

Lua Syntax:

getStr(number)
  • Arguments
number

The field which specifies a sprite value. The field type must be t_sprite.

  • Return Values
table

A table representing the value of the specified field. The table contains the entries path, x, y, cutting (t_rect) and transparency.

getSprites

Lua Syntax:

getSprites(number)
  • Arguments
number

The field which specifies a sprite list. The field type must be t_vsprite.

  • Return Values
table

Table with t_sprite entries representing the specified field.

getStr

Lua Syntax:

getStr(number)
  • Arguments
number

The field which specifies a string value. The field type must be t_string.

  • Return Values
string

Current value of specified field.

setName

Sets the internal name of the visionaire object.

Lua Syntax:

setName(string)
  • Arguments
string

The new internal name.

setValue

Sets a field of the visionaire object. Note that only fields which are marked as 'Scriptable' in the Visionaire data structure documentation should be modified. If the field is not marked as scriptable then changes to this field are often not recognized (or sometimes not immediately). Further changes to these fields will usually not be stored in savegames for performance reasons.

Lua Syntax:

setValue(number, VARIANT, {flags=1, index = number})
  • Arguments
number

Data field which will be set.

VARIANT

Value to set. The type of the value must match the type of the field. E.g. if the field type is t_int then the value type must be a number (int). If the field type is t_rect then the value type must be a table with the entries "x", "y", "width" and "height".

  • Flags
index

If specified then an existing list element at the given index will be modified. In this case the field type must be of a list-type (t_vint, t_links, ...).

  • Examples
local tom = getObject("Characters[Tom]")
-- set character "tom" to position 100,300
tom:setValue(VCharacterPosition, {x=100,y=300})
local cond = getObject("Conditions[TV is on]")
cond:setValue(VConditionValue, true)
-- let the "dog" follow the current character
local dog = getObject("Characters[dog]")
local currentCharacter = getObject("Game.CurrentCharacter")
dog:setValue(VCharacterFollowCharacter, currentCharacter)

Exported objects

The following objects are exported to the Lua scripting environment:

  • currentAction: a visionaire object which represents the action where the current script was called from.
  • emptyObj: an empty visionaire object.

Accessing an object

Use the getObject command to access a visionaire object. Pass an object path to the command to get the visionaire object.

Examples:

local mother = getObject("Characters[Mother]")
local cond = getObject("Scenes[Forest].SceneObjects[Tree].ObjectCondition")

Whenever an object path is needed you can specify it the following way:
1. start with a Table (as is shown in the table column of the Visionaire Data Structure).
2. if this table is not "Game" (this table has only one object) then you have to write the name of the object inside bracktes ('[' and ']').
3. either goto 7. or continue with 4.
4. write a dot '.' and then a fieldname of this object (the field type must either be t_link or t_links).
5. if the field type is t_links then goto 2., else goto 6.
6. either goto 7. or goto 4. (access another link)
7. done. A valid object is specified.

Examples:

Game.CharacterLinks[Tom]
Scenes[Room].SceneObjects[start].SceneConditions[game started?]
Characters[Tom].CharacterInterfaces[Tom-MI3]

Alternatively, you can also access an object by its table-id and object-id. It can be specified by a tuple:
(table-id,object-id)

Example:

(0,6)

Selects the object with id 6 from table 0 (characters).

Commands

Commands for Visionaire Player only