Difference between revisions of "UE3:Object functions (UDK)"

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Latest revision as of 05:42, 17 January 2010

;Other member categories for this class::operators, static native functions, structs

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Functions[edit]

Static native functions[edit]

See Object static native functions.

Other static functions[edit]

ClampRotAxis[edit]

Clamp a rotation Axis. The ViewAxis rotation component must be normalized (within the [-32768,+32767] range). This function will set out_DeltaViewAxis to the delta needed to bring ViewAxis within the [MinLimit,MaxLimit] range.

Parameters:

• ViewAxis - Rotation Axis to clamp
• out_DeltaViewAxis - Delta Rotation Axis to be added to ViewAxis rotation (from ProcessViewRotation). Set to be the Delta to bring ViewAxis within the [MinLimit,MaxLimit] range.
• MaxLimit - Maximum for Clamp. ViewAxis will not exceed this.
• MinLimit - Minimum for Clamp. ViewAxis will not go below this.

ClampRotAxisFromBase[edit]

Clamp Rotator Axis.

Parameters:

• Current - Input axis angle.
• Center - Center of allowed angle.
• MaxDelta - Maximum delta allowed.

Returns:

axis angle clamped between [Center-MaxDelta, Center+MaxDelta]

ClampRotAxisFromRange[edit]

Clamp Rotator Axis.

Parameters:

• Current - Input axis angle.
• Min - Min allowed angle.
• Max - Max allowed angle.

Returns:

axis angle clamped between [Min, Max]

ColorToLinearColor[edit]

converts a color to a LinearColor

Parameters:

• OldColor - the color to convert

Returns:

the matching LinearColor

FindDeltaAngle[edit]

Gets the difference in world space angles in [-PI,PI] range

Parameters:

• A1 - First angle
• A2 - Second angle

FInterpEaseIn[edit]

Interpolates with ease-in (smoothly approaches B).

Parameters:

• A - Value to interpolate from.
• B - Value to interpolate to.
• Alpha - Interpolant.
• Exp - Exponent. Higher values result in more rapid deceleration.

Returns:

Interpolated value.

FInterpEaseOut[edit]

Interpolates with ease-out (smoothly departs A).

Parameters:

• A - Value to interpolate from.
• B - Value to interpolate to.
• Alpha - Interpolant.
• Exp - Exponent. Higher values result in more rapid acceleration.

Returns:

Interpolated value.

FPctByRange[edit]

Returns the relative percentage position Value is in the range [Min,Max]. Examples: - GetRangeValueByPct( 2, 4, 2 ) == 0 - GetRangeValueByPct( 2, 4, 4 ) == 1 - GetRangeValueByPct( 2, 4, 3 ) == 0.5

Parameters:

• Min - Min limit
• Max - Max limit
• Value - Value between Range.

Returns:

relative percentage position Value is in the range [Min,Max].

GetAngularDegreesFromRadians[edit]

GetHeadingAngle[edit]

Returns world space angle (in radians) of given vector

Parameters:

• Dir - Vector to be converted into heading angle

GetRangePctByValue[edit]

Returns the relative percentage position Value is in the Range. Examples: - GetRangeValueByPct( Range, Range.X ) == 0 - GetRangeValueByPct( Range, Range.Y ) == 1 - GetRangeValueByPct( Range, (Range.X+Range.Y)/2 ) == 0.5

Parameters:

• Range - Range of values. [Range.X,Range.Y]
• Value - Value between Range.

Returns:

relative percentage position Value is in the Range.

GetRangeValueByPct[edit]

Returns the value in the Range, relative to Pct. Examples: - GetRangeValueByPct( Range, 0.f ) == Range.X - GetRangeValueByPct( Range, 1.f ) == Range.Y - GetRangeValueByPct( Range, 0.5 ) == (Range.X+Range.Y)/2

Parameters:

• Range - Range of values. [Range.X,Range.Y]
• Pct - Relative position in range in percentage. [0,1]

Returns:

the value in the Range, relative to Pct.

GetRightMost[edit]

Get right most number from an actor name (ie Text == "CoverLink_45" returns "45")

JoinArray[edit]

Create a single string from an array of strings, using the delimiter specified, optionally ignoring blank members

Parameters:

• StringArray - the array of strings to join into the single string
• out_Result - out] will contain a single string containing all elements of the array, separated by the delimiter specified
• Delim - the delimiter to insert where array elements are concatenated
• bIgnoreBlanks - TRUE to skip elements which contain emtpy strings

LerpColor[edit]

Util to interpolate between two colors

MakeColor[edit]

Create a Color from independant RGBA components

MakeLinearColor[edit]

Create a LinearColor from independant RGBA components.

MakeRotator[edit]

Create a Rotation from independant Pitch, Yaw, Roll

ParseLocalizedPropertyPath[edit]

given a path to a localized key of the form "Package.Section.Name", return the appropriate value from the localization file for the current language

RandRange[edit]

Return a random number within the given range.

RSize[edit]

returns Rotator Size (vector definition applied to rotators)

Parameters:

• Rotator - R

Returns:

mathematical vector length: Sqrt(Pitch^2 + Yaw^2 + Roll^2)

SClampRotAxis[edit]

Smooth clamp a rotator axis. This is mainly used to bring smoothly a rotator component within a certain range [MinLimit,MaxLimit]. For example to limit smoothly the player's ViewRotation Pitch or Yaw component.

Parameters:

• fDeltaTime - Elapsed time since this function was last called, for interpolation.
• ViewAxis - Rotator's Axis' current angle.
• out_DeltaViewAxis - Delta Value of Axis to be added to ViewAxis (through PlayerController::ProcessViewRotation(). This value gets modified.
• MaxLimit - Up angle limit.
• MinLimit - Negative angle limit (value must be negative)
• InterpolationSpeed - Interpolation Speed to bring ViewAxis within the [MinLimit,MaxLimit] range.

Split[edit]

Splits Text on the first Occurrence of Split and returns the remaining part of Text.

SplitString[edit]

Wrapper for splitting a string into an array of strings using a single expression.

UnwindHeading[edit]

vect2d[edit]

Construct a vector2d variable

Native functions[edit]

Disable[edit]

DumpStateStack[edit]

Logs the current state stack for debugging purposes.

Enable[edit]

EvalInterpCurveFloat[edit]

Evaluate a float curve for an input of InVal

EvalInterpCurveVector[edit]

Evaluate a vector curve for an input of InVal

EvalInterpCurveVector2D[edit]

Evaluate a vector2D curve for an input of InVal

GetStateName[edit]

Returns the current state name, useful for determining current state similar to IsInState. Note: This *doesn't* work with inherited states, in that it will only compare at the lowest state level.

Returns:

Name of the current state

GetSystemTime[edit]

Return the system time components.

GotoState[edit]

Transitions to the desired state and label if specified, generating the EndState event in the current state if applicable and BeginState in the new state, unless transitioning to the same state.

Parameters:

• NewState - new state to transition to
• Label - optional Label to jump to
• bForceEvents - optionally force EndState/BeginState to be called even if transitioning to the same state.
• bKeepStack - prevents state stack from being cleared

IsA[edit]

IsChildState[edit]

Returns true if TestState derives from TestParentState.

IsInState[edit]

Checks the current state and determines whether or not this object is actively in the specified state. Note: This does work with inherited states.

Parameters:

• TestState - state to check for
• bTestStateStack - check the state stack? (does *NOT* work with inherited states in the stack)

Returns:

True if currently in TestState

IsPendingKill[edit]

Returns whether the object is pending kill and about to have references to it NULLed by the garbage collector.

Returns:

TRUE if object is pending kill, FALSE otherwise

PointDistToLine[edit]

Calculates the distance of a given Point in world space to a given line, defined by the vector couple (Origin, Direction).

Parameters:

• Point - point to check distance to Axis
• Line - unit vector indicating the direction to check against
• Origin - point of reference used to calculate distance
• OutClosestPoint - optional point that represents the closest point projected onto Axis

Returns:

distance of Point from line defined by (Origin, Direction)

PointDistToSegment[edit]

Returns closest distance from a point to a segment.

Parameters:

• Point - point to check distance for
• StartPoint - StartPoint of segment
• EndPoint - EndPoint of segment
• OutClosestPoint - Closest point on segment.

Returns:

closest distance from Point to segment defined by (StartPoint, EndPoint).

PopState[edit]

Pops the current pushed state, returning execution to the previous state at the same code point. Note: PopState() will have no effect if no state has been pushed onto the stack.

This will call PoppedState when entering the state that was just pushed on the state stack. It will not call EndState.

Parameters:

• bPopAll - optionally pop all states on the stack to the originally executing one

See: event PausedState

PushState[edit]

Pushes the new state onto the state stack, setting it as the current state until a matching PopState() is called. Note that multiple states may be pushed on top of each other. You may not push the same state multiple times.

This will call PushedState when entering the state that was just pushed on the state stack. It will not call BeginState.

Parameters:

• NewState - name of the state to push on the stack
• NewLabel - optional name of the state label to jump to

See: event ContinuedState

SaveConfig[edit]

TimeStamp[edit]

Returns a string containing a system timestamp

TransformVectorByRotation[edit]

Script hook to FRotationMatrix::TransformFVector().

Events[edit]

BeginState[edit]

Called immediately when entering a state, while within the GotoState() call that caused the state change (before any state code is executed).

ContinuedState[edit]

Called on the state that is no longer paused because of a PopState().

EndState[edit]

Called immediately before going out of the current state, while within the GotoState() call that caused the state change, and before BeginState() is called within the new state.

PausedState[edit]

Called on the state that is being paused because of a PushState().

PoppedState[edit]

Called immediately in the current state that is being popped off of the state stack, before the new state is activated.

PushedState[edit]

Called immediately in the new state that was pushed onto the state stack, before any state code is executed.

Other instance functions[edit]

ByteToFloat[edit]

Converts a 0-255 byte to a float value, to a range of 0.f to 1.f.

Parameters:

• inputByte - byte to convert
• bSigned - optional, spit out -1.f to 1.f instead

Returns:

newly converted value

FloatToByte[edit]

Converts a float value to a 0-255 byte, assuming a range of 0.f to 1.f.

Parameters:

• inputFloat - float to convert
• bSigned - optional, assume a range of -1.f to 1.f

Returns:

byte value 0-255

GetPackageName[edit]

Returns:

the name of the package this object resides in

InCylinder[edit]

NoZDot[edit]

Returns dot product of two vectors while ignoring the Z component.

PointDistToPlane[edit]

Calculates the distance of a given point to the given plane. (defined by a combination of vector and rotator) Rotator.AxisX = U, Rotator.AxisY = Normal, Rotator.AxisZ = V

Parameters:

• Point - Point to check distance to Orientation
• Orientation - Rotator indicating the direction to check against
• Origin - Point of reference used to calculate distance
• out_ClosestPoint - Optional point that represents the closest point projected onto Plane defined by the couple (Origin, Orientation)

Returns:

distance of Point to plane