How to change the params grow amount in runtime?

Container

How to change the params grow amount argument of material in runtime? I tried it with preload(material).params_grow amount, but then it says, cant assign to constant.

TwistedTwigleg

You need to get the material, assign it to a variable, and then you should be able to change it. The reason the debugger is giving an arrow is likely because you are using preload, which returns a constant as its intended just for loading. If you want to modify it, you’ll need to use multiple statements and/or put it in a normal variable:

# might work
var material = preload(“res://material_here.tscn”)
func _ready():
	material.params_grow_amount = 2.0

# probably will work (assuming on a MeshInstance)
func _ready():
	var material = get_surface_material(0)
	material.params_grow_amount = 2.0

Also, I removed a few of the tags, as tags like Team Building doesn’t really apply to this question.

Container

@TwistedTwigleg said: You need to get the material, assign it to a variable, and then you should be able to change it. The reason the debugger is giving an arrow is likely because you are using preload, which returns a constant as its intended just for loading. If you want to modify it, you’ll need to use multiple statements and/or put it in a normal variable:
# might work
var material = preload(“res://material_here.tscn”)
func _ready():
	material.params_grow_amount = 2.0

# probably will work (assuming on a MeshInstance)
func _ready():
	var material = get_surface_material(0)
	material.params_grow_amount = 2.0
Also, I removed a few of the tags, as tags like Team Building doesn’t really apply to this question.

I didn't added team building

TwistedTwigleg

@Container said:
@TwistedTwigleg said: You need to get the material, assign it to a variable, and then you should be able to change it. The reason the debugger is giving an arrow is likely because you are using preload, which returns a constant as its intended just for loading. If you want to modify it, you’ll need to use multiple statements and/or put it in a normal variable:
# might work
var material = preload(“res://material_here.tscn”)
func _ready():
	material.params_grow_amount = 2.0

# probably will work (assuming on a MeshInstance)
func _ready():
	var material = get_surface_material(0)
	material.params_grow_amount = 2.0
Also, I removed a few of the tags, as tags like Team Building doesn’t really apply to this question.
I didn't added team building

Oh, well maybe Vanilla added them then. I think that has occurred a few times before. No biggie regardless, I just wanted to mention it in case you were wondering why a bunch of tags disappeared.

Container

@TwistedTwigleg said: You need to get the material, assign it to a variable, and then you should be able to change it. The reason the debugger is giving an arrow is likely because you are using preload, which returns a constant as its intended just for loading. If you want to modify it, you’ll need to use multiple statements and/or put it in a normal variable:
# might work
var material = preload(“res://material_here.tscn”)
func _ready():
	material.params_grow_amount = 2.0

# probably will work (assuming on a MeshInstance)
func _ready():
	var material = get_surface_material(0)
	material.params_grow_amount = 2.0

get_surface_material isn't declared

TwistedTwigleg

@Container said:
@TwistedTwigleg said: You need to get the material, assign it to a variable, and then you should be able to change it. The reason the debugger is giving an arrow is likely because you are using preload, which returns a constant as its intended just for loading. If you want to modify it, you’ll need to use multiple statements and/or put it in a normal variable:
# might work
var material = preload(“res://material_here.tscn”)
func _ready():
	material.params_grow_amount = 2.0

# probably will work (assuming on a MeshInstance)
func _ready():
	var material = get_surface_material(0)
	material.params_grow_amount = 2.0
get_surface_material isn't declared

What node is the script attached to? The get_surface_material function is only in the MeshInstance node, if I recall correctly. If you are using a different node, then you’ll need to get the material a different way, like using a preload and/or an exported material:

# Once added, you can set the material in the script inspector
export (Material) var material = null
func _ready():
	material.params_grow_amount = 2.0