swf-go/subtypes/ACTIONS.go

package subtypes

import (
	"git.gammaspectra.live/WeebDataHoarder/swf-go/types"
	"github.com/icza/bitio"
)

type CLIPACTIONS struct {
	Reserved      uint16
	AllEventFlags CLIPEVENTFLAGS
	Records       CLIPACTIONRECORDS
}

type CLIPACTIONRECORDS []CLIPACTIONRECORD

func (records *CLIPACTIONRECORDS) SWFRead(r types.DataReader, ctx types.ReaderContext) (err error) {
	for {
		var flags CLIPEVENTFLAGS
		err = types.ReadType(r, ctx, &flags)
		if err != nil {
			return err
		}
		if flags.IsEnd() {
			break
		}
		record := CLIPACTIONRECORD{
			EventFlags: flags,
		}
		err = types.ReadType(r, ctx, &record)
		if err != nil {
			return err
		}
		*records = append(*records, record)
	}
	return nil
}

type CLIPACTIONRECORD struct {
	EventFlags       CLIPEVENTFLAGS
	ActionRecordSize uint32
	KeyCode          uint8
	Actions          []ACTIONRECORD
}

func (clipRecord *CLIPACTIONRECORD) SWFRead(r types.DataReader, ctx types.ReaderContext) (err error) {
	err = types.ReadU32(r, &clipRecord.ActionRecordSize)
	if err != nil {
		return err
	}
	countReader := bitio.NewCountReader(r)
	if clipRecord.EventFlags.KeyPress {
		err = types.ReadU8(r, &clipRecord.KeyCode)
		if err != nil {
			return err
		}
	}

	//TODO: check
	for uint32(countReader.BitsCount/8) < clipRecord.ActionRecordSize {
		var record ACTIONRECORD
		err = types.ReadType(countReader, ctx, &record)
		if err != nil {
			return err
		}
		clipRecord.Actions = append(clipRecord.Actions, record)
	}

	return nil
}

type CLIPEVENTFLAGS struct {
	//align?
	_ struct{} `swfFlags:"root"`

	KeyUp      bool
	KeyDown    bool
	MouseUp    bool
	MouseDown  bool
	MouseMove  bool
	Unload     bool
	EnterFrame bool
	Load       bool

	DragOver       bool
	RollOut        bool
	RollOver       bool
	ReleaseOutside bool
	Release        bool
	Press          bool
	Initialize     bool
	EventData      bool

	//SWF 6 or later

	Reserved1 uint8 `swfBits:",5" swfCondition:"IsSWF6OrGreater()"`
	Construct bool  `swfCondition:"IsSWF6OrGreater()"`
	KeyPress  bool  `swfCondition:"IsSWF6OrGreater()"`
	DragOut   bool  `swfCondition:"IsSWF6OrGreater()"`

	Reserved2 uint8 `swfBits:",8" swfCondition:"IsSWF6OrGreater()"`
}

func (f *CLIPEVENTFLAGS) IsEnd() bool {
	return *f == CLIPEVENTFLAGS{}
}

func (f *CLIPEVENTFLAGS) IsSWF6OrGreater(ctx types.ReaderContext) bool {
	return ctx.Version >= 6
}

type ActionCode uint8

// TODO: complete lists
const (
	_ = ActionCode(iota)
	_
	_
	_
	ActionNextFrame
	ActionPreviousFrame
	ActionPlay
	ActionStop
	ActionToggleQuality
	ActionStopSounds
	ActionAdd
	ActionSubtract
	ActionMultiply
	ActionDivide
	ActionEquals
	ActionLess
	ActionAnd
	ActionOr
	ActionNot
	ActionStringEquals
	ActionStringLength
	ActionStringAdd
	ActionStringExtract
	ActionPop
	ActionToInteger
	_
	_
	_
	ActionGetVariable
	ActionSetVariable
	_
	_
	ActionSetTarget2
	_
	ActionGetProperty
	ActionSetProperty
	ActionCloneSprite
	ActionRemoveSprite
	ActionTrace
	ActionStartDrag
	ActionEndDrag
	ActionStringLess
	_
	_
	_
	_
	_
	_
	ActionRandomNumber
	ActionMBStringLength
	ActionCharToAscii
	ActionAsciiToChar
	ActionGetTime
	ActionMBStringExtract
	ActionMBCharToAscii
	ActionMBAsciiToChar
)
const (
	_ = ActionCode(iota) + 0x80
	ActionGotoFrame
	ActionGetURL
	_ //83
	_
	_
	_
	_
	_
	_
	ActionWaitForFrame // 0x8A
	ActionSetTarget
	ActionGoToLabel
	ActionWaitForFrame2
	_
	_
	_ //0x90
	_
	_
	_
	_
	_
	ActionPush
	_
	_
	ActionJump
	ActionGetURL2
	_
	_
	ActionIf
	ActionCall
	ActionGotoFrame2
)

type ACTIONRECORD struct {
	_          struct{} `swfFlags:"root"`
	ActionCode ActionCode
	Length     uint16  `swfCondition:"HasActionLength()"`
	Data       []uint8 `swfCount:"Length"`
}

func (a *ACTIONRECORD) HasActionLength(ctx types.ReaderContext) bool {
	return a.ActionCode > 0x80
}