Scrolling Game Development Kit Forum

SGDK Version 1 => Script => Topic started by: eric22222 on 2006-12-14, 11:08:09 AM

Title: Functions in Script
Post by: eric22222 on 2006-12-14, 11:08:09 AM

Alright, I'm having more script problems. We have our player throwing a spear at an enemy. There's a collision between the two sprites, and I want to activate a function in script that will create a death animation sprite based on the enemy that was killed. Here's what I've got:

Code: [Select]

Dim SprDead

Sub Player_OnSpritesCollide(Name, ClsASprIdx, ClsBSprIdx, CollDefIdx)
   Dim SprA, SprB
   Set SprA = ProjectObj.GamePlayer.PlayerSprite.rDef.rLayer.Sprite(ClsASprIdx)
   Set SprB = ProjectObj.GamePlayer.PlayerSprite.rDef.rLayer.Sprite(ClsBSprIdx)
   If CollDefIdx = 1 Then
      If left(SprB.rDef.Name, 4) = "Slug" Then
         KillSprite (ClsBSprIdx)
      End If
   End If
End Sub

Function KillSprite (SprDead)
   Dim X, Y
   Dim NewSpr, Lyr
   X = SprDead.X
   Y = SprDead.Y
   Set Lyr = ProjectObj.GamePlayer.rmap.MapLayer("Main")
   Lyr.RemoveSprite SprDead
   If left(SprDead.rDef.Name,4) = "Slug" Then Set NewSpr = Lyr.pMap.SpriteDefs("Dead_Slug_" + MapNum).MakeInstance
   Lyr.AddSprite(NewSpr)
  NewSpr.X = X
  NewSpr.Y = Y
End Function
I get an error message saying "Object required: SprDead." From what I understand, it should have the value from where I pass it to the function. What's the deal here?

Title: Re: Functions in Script
Post by: bluemonkmn on 2006-12-14, 02:06:14 PM

ClsBSprIdx is just a number indicating the index of the sprite within its layer.  If you want the actual sprite object, you need to pass SprB also, and use SprB when referring to SprB.rDef.Name, SprB.X and SprB.Y, and continue to use SprDead when calling Lyr.RemoveSprite.

Title: Re: Functions in Script
Post by: durnurd on 2006-12-15, 12:15:17 AM

Also, you don't need to Dim variables that are passed into a function.

Title: Re: Functions in Script
Post by: bluemonkmn on 2006-12-15, 06:36:25 AM

What variables did he Dim that were passed in?

Title: Re: Functions in Script
Post by: durnurd on 2006-12-15, 09:03:26 AM

I'm looking at Dim SprDead at the top and in the Function KillSprite (SprDead)

Title: Re: Functions in Script
Post by: eric22222 on 2006-12-15, 04:17:33 PM

Ok, I think I got everything. Had to look at some other script for the syntax on multiple parameters, but I got it.