Entity Recorder

This code has been declared by its author to be Public Domain code.

Entity Recorder by Rimmsy

2002

my first code post! Hope someone likes it.

; Entity recorder

; by matt griffiths (Rims)
; use any way you like.
; any questions ca0mgr@hotmail.com

Const RECORD_FILE_VERSION$="1.00"

Graphics3D 640,480,0,2
SetBuffer BackBuffer()

Type trail
	Field ent,life
End Type

; required global
Global recordFile=0
Global RECORD_state=0

Global leave_a_trail=1 ; 0 for no trail, 1 for.

; for freeLook(cam)
Global FL_Pitch#,FL_Yaw#,FL_Roll#,FL_XSpeed#,FL_YSpeed#,FL_ZSpeed#
Global camera=CreateCamera()
	MoveEntity camera,0,3,-5
	
	
	
	
	
; just make some objects to test with
plane=CreatePlane()
	EntityColor plane,255,0,0
	t=CreateTexture(32,32) : SetBuffer TextureBuffer(t)
	For i=0 To 31 Step 16
		For j=0 To 31 Step 16
			Color i*120,i*120,i*120
			Rect i,j,32/3,32/3
		Next
	Next
	SetBuffer BackBuffer()
	EntityTexture plane,t
	FreeTexture t	
c1=CreateCube()
	EntityColor c1,255,255,0
	PositionEntity c1,5,1,5	
c2=CopyEntity(c1)
	EntityColor c2,255,0,255
	PositionEntity c2,-5,1,-5
s1=CreateSphere()
	EntityColor s1,90,90,145
	EntityAlpha s1,0.4
	PositionEntity s1,-5,1,5
s2=CopyEntity(s1)
	PositionEntity s2,5,1,-5
	EntityBlend s2,3
	

; timing
gameFPS = 30 
framePeriod = 1000 / gameFPS 
frameTime = MilliSecs () - framePeriod
	

	
	
	
	
While KeyHit(1)=0
	Repeat 
		frameElapsed = MilliSecs () - frameTime 
	Until frameElapsed 
	frameTicks = frameElapsed / framePeriod 
	frameTween# = Float (frameElapsed Mod framePeriod) / Float (framePeriod) 
	
	For frameLimit = 1 To frameTicks 
		If frameLimit = frameTicks Then CaptureWorld 
		frameTime = frameTime + framePeriod
		
		; update everything...
		If KeyHit(19) Then startRecording("recording.rec")	; R
		If KeyHit(25) Then startPlayBack("recording.rec")	; P
	
		If KeyHit(57) Then stopRecordingAndPlayback()	; Space
	
		If RECORD_state=1 ; are we recording?
			record(camera)
		ElseIf RECORD_state=2 ; oh, we're playing back a file
			playback(camera) ; change camera to any object handle
		EndIf
	
		; handles all trail left behind
		If leave_a_trail
			For h.trail=Each trail
				If h\life < 0
					; kill it
					FreeEntity h\ent
					Delete h
				Else
					h\life=h\life-1
					d#=(1.0/150.0)*Float(h\life) ; (current alpha is (1.0/Total Life)*current life)
					EntityAlpha h\ent,d
				EndIf
			Next
		EndIf
	
		FreeLook(Camera)
	
		UpdateWorld	
	Next
	
	RenderWorld	frametween
	
	Color 255,0,0
	If RECORD_state=1 Then Text 0,0,"RECORDING" ElseIf RECORD_state=2 Then Text 0,0,"PLAYBACK"
	
	Flip
Wend
End



Function record(ent)
	If ent=0 Then 
		DebugLog "Entity does not exist"
		Return	
	EndIf
	If recordFile=0 Then Return

	WriteFloat recordFile,EntityX(ent)
	WriteFloat recordFile,EntityY(ent)
	WriteFloat recordFile,EntityZ(ent)

	WriteFloat recordFile,EntityPitch(ent)
	WriteFloat recordFile,EntityYaw(ent)
	WriteFloat recordFile,EntityRoll(ent)
	
	If leave_a_trail
		If Rand(1,3)=1 ; only once every 3 cycles (on average)
			; optional... leaves a trail which fades out.
			t.trail=New trail
			t\ent=CreateCube()
			EntityColor t\ent,255,0,0
			ScaleEntity t\ent,0.5,0.5,0.5
			PositionEntity t\ent,EntityX(ent),EntityY(ent),EntityZ(ent)
			t\life=150
		EndIf
	EndIf
End Function


Function startRecording(file$)
	If recordFile <> 0 Then CloseFile recordFile
	recordFile=WriteFile(file)
	RECORD_state=1
	; write the recorder version
	WriteLine recordFile,RECORD_FILE_VERSION
End Function


Function startPlayBack(file$)
	recordFile=ReadFile(file)
	RECORD_state=2	
	; check the file and recorder versions
	r$=ReadLine(recordFile)
	If r <> RECORD_FILE_VERSION
		RuntimeError("Wrong file version (file: "+r+". Rrecorder: "+RECORD_FILE_VERSION+")")
		End
	EndIf
End Function


Function stopRecordingAndPlayback()
	If RECORD_state=1 Or RECORD_state=2 ; are we recording OR playing back?
		CloseFile recordFile
		RECORD_state=0
	EndIf	
End Function


Function playBack(entity)
	If entity=0 Then Return
	If recordFile=0 Then Return

	If Not Eof(recordFile)
		x#=ReadFloat(recordFile)
		y#=ReadFloat(recordFile)
		z#=ReadFloat(recordFile)
		
		PositionEntity entity,x,y,z
		
		New_pitch#=ReadFloat(recordFile)
		New_yaw#=ReadFloat(recordFile)
		New_roll#=ReadFloat(recordFile)
		
		RotateEntity entity,new_pitch,new_yaw,new_roll

		If leave_a_trail
			If Rand(1,3)=1 ; only once every 3 cycles on average
				; optional... leaves a trail which fades out.
				t.trail=New trail
				t\ent=CreateCube()
				EntityColor t\ent,255,0,0
				ScaleEntity t\ent,0.5,0.5,0.5
				PositionEntity t\ent,EntityX(entity),EntityY(entity),EntityZ(entity)
				t\life=150
			EndIf
		EndIf		
	Else
		CloseFile(recordFile)				
		RECORD_state=0
	EndIf	
End Function




; FreeLook function by Syntax Error
Function FreeLook(FL_Cam)
		FL_Pitch#=FL_Pitch#-(-MouseYSpeed()*0.02) : FL_Pitch#=FL_Pitch#/1.2
    FL_Yaw#=FL_Yaw#+-(MouseXSpeed()*0.02) : FL_Yaw#=FL_Yaw#/1.2
    MoveMouse (GraphicsWidth()/2,GraphicsHeight()/2)
    FL_ZSpeed#=FL_ZSpeed#+Float(KeyDown(17)-KeyDown(31))*0.12 : FL_ZSpeed#=FL_ZSpeed#/1.14;  w & s
		FL_XSpeed#=FL_XSpeed#+Float(KeyDown(32)-KeyDown(30))*0.12 : FL_XSpeed#=FL_XSpeed#/1.14 ; a & d
		FL_YSpeed#=FL_YSpeed#+Float(KeyDown(19)-KeyDown(33))*0.12 : FL_YSpeed#=FL_YSpeed#/1.14 ; r & f
		FL_Roll#=(FL_Yaw#*1.1)-(FL_XSpeed#*2.3)
    MoveEntity FL_Cam,FL_XSpeed#,FL_YSpeed#+Abs(FL_Roll#*FL_XSpeed#)/50,FL_ZSpeed#
		Local cp#=EntityPitch(FL_Cam,True)+FL_Pitch#
		If cp<-89 Then cp=-89
		If cp>89 Then cp=89
		RotateEntity FL_Cam,cp,EntityYaw(FL_Cam)+FL_Yaw#,FL_Roll#
End Function

Comments

Trader3564

2007

Nice!
I have itsybitsy perfected the script and added a "PREFIX" feature to "TAG" your video file, in cases someone opens it with Notepad.

By default they will read "BLITZ ENTITY VID1.00" but you ma change that to whatever you want (like "MYGAME MOV1.2")

Const rec_version$="1.00"
Const rec_prefix$="B3D ENTITY VID"

Global rec_file=0
Global rec_state=0

Function RecordEntity(e)
	WriteFloat rec_file,EntityX(e)
	WriteFloat rec_file,EntityY(e)
	WriteFloat rec_file,EntityZ(e)
	WriteFloat rec_file,EntityPitch(e)
	WriteFloat rec_file,EntityYaw(e)
	WriteFloat rec_file,EntityRoll(e)
End Function

Function StartRecording(filename$)
	If rec_file <> 0 Then CloseFile rec_file
	rec_file=WriteFile(filename)
	rec_state=1
	WriteLine rec_file,rec_prefix+rec_version
End Function

Function StartPlayback(filename$)
	rec_file=ReadFile(filename)
	rec_state=2	
	rv$=ReadLine(rec_file)
	rv=Right(rv,Len(rv)-Len(rec_prefix))
	If rv <> rec_version
		RuntimeError("Error in file "+FileName+". "+rec_prefix+" version is "+rv+", must be "+rec_version)
	EndIf
End Function

Function PlaybackEntity(e)
	If rec_file=0 Then Return

	If Not Eof(rec_file)
		x#=ReadFloat(rec_file)
		y#=ReadFloat(rec_file)
		z#=ReadFloat(rec_file)		
		pitch#=ReadFloat(rec_file)
		yaw#=ReadFloat(rec_file)
		roll#=ReadFloat(rec_file)

		PositionEntity e,x,y,z
		RotateEntity e,pitch,yaw,roll
	Else
		CloseRecFile()
	EndIf	
End Function

Function StopPlayback()
	CloseRecFile()
End Function

Function StopRecording()
	CloseRecFile()
End Function

Function CloseRecFile()
	If rec_file <> 0 Then 
		CloseFile rec_file
		rec_file=0
	End If
	rec_state=0
End Function

Trader3564

2007

xD i forget the part that should be used in the main loop:

;PUT YOUR OTHER STUFF HERE

	If KeyHit(57) Then
		If rec_state=0 Then 
			StartRecording("recording1.rec")
		Else 
			StopRecording()
		End If
	End If
	If KeyHit(25) Then
		If rec_state=0 Then 
			StartPlayback("recording1.rec")
		Else
			StopPlayback()
		End If
	End If

	If rec_state=1
		RecordEntity(cam)
	ElseIf rec_state=2
		PlaybackEntity(cam)
	EndIf

;PUT YOUR OTHER STUFF HERE

	UpdateWorld
	RenderWorld

	If rec_state=1 Then 
		Text 10,50,"Recorder: RECORDING"
	ElseIf rec_state=2 Then 
		Text 10,50,"Recorder: PLAYING"
	Else	
		Text 10,50,"Recorder: OFF"
	End If
 
	Flip

;PUT YOUR OTHER STUFF HERE

2007

You really like digging up this old code, don't you? O_o

Rimmsy

2007

Hey, I'm not moaning. Thanks dude!

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