Vasm - getting the size of structure

[mcgeezer]

Quick question here…. As per the title, is it possible to get the size of a defined structure as a constant? It seems logical that i should be able to do this but cant seem to find it.

Cheers, Graeme

[deimos]

I think it's normally done by adding a fake sizeof element at the end.

[DanScott]

Something like this

rsreset

var1    rs.w 1
var2    rs.w 1
varsLen rs.w 0

[mcgeezer]

ahhhh...

so in my scenario...

 STRUCTURE EnemyBoss,hBobSpriteReserved
	ULONG	BossMoveSpeed			; Speed parameter
	UWORD	BossFaceDirection		; Facing Direction
	UWORD	BossHasHold			; Used for holding
	UWORD	BossTimer			; Univseral Timer
	UWORD	BossSeqNum			; Current Animation Sequence Number
	UWORD	BossSeqPos			; Current Animation Sequence Position
	UWORD	BossSeqParam			; Parameter on Sequence
	UWORD	BossCollisionAnim		; Bool - Collision Activate?
	UWORD	BossCollisionRange		; Range - 0-320 Pixels from Thomas
	UWORD	BossCollisionOffWhenCrouch	; Bool - Can be hit when Crouching
	UWORD	BossCollisionWhenJumpSinePos	; Range - Sine Position on Jump for Thomas
	UWORD	BossCollisionFrame		; Frame Number on Boss for Collision
	UWORD	BossCollisionDepleteEnergy	; Int - When hit the amount o deplete from player
	UWORD	BossHitFrameLeft
	UWORD	BossHitFrameLeftXOffset
	UWORD	BossHitFrameLeftYOffset	
	UWORD	BossHitFrameRight	
	UWORD	BossHitFrameRightXOffset
	UWORD	BossHitFrameRightYOffset
	UWORD	BossCollisionFired		; Bool
        UWORD     sizeBossStruct

So sizeBossStruct will be the size of the structure.

I would have thought there's be some way to declare is at a constant like sizeBossStruct equ sizeof(EnemyBoss) ... or something like that.

Either way, I have a working method... cheers gents.

[meynaf]

There is so directive for that.

xx rs.l 1
yy rs.w 1
ssize so

[paraj]

You're using the macros from exec/types.i? Then just look at what's done in e.g. exec/lists.i:

   STRUCTURE	MLH,0
	APTR	MLH_HEAD
	APTR	MLH_TAIL
	APTR	MLH_TAILPRED
	LABEL	MLH_SIZE

I.e. use LABEL.