Godot3 change color of meshInstance

Question

How can I change mesh color in Godot3 properly?

extends MeshInstance

# class member variables go here, for example:
# var a = 2
# var b = "textvar"
var i=0
export(Color) var new_color = Color(1, 1, 1, 1)
func _ready():
    var n = self
    var mat=n.get_mesh().surface_get_material(0)
    var mat2 = SpatialMaterial.new()
    mat2.albedo_color = Color(0.8, 0.0, 0.0)
    self.get_mesh().surface_set_material(0,mat2)
    set_process(true)
    # Called every time the node is added to the scene.
    # Initialization here
func _process(delta):
    randomize()
    var mat2 = SpatialMaterial.new()
    mat2.albedo_color = Color8(255, 0, 0)
    var i = rand_range(0.0,100.0)
    if i>50.0:
        self.get_mesh().surface_set_material(0,mat2)
        i=0
    else:
        mat2.albedo_color = Color8(0, 0, 255)
        self.get_mesh().surface_set_material(0,mat2)

I tried this simple code to change mesh color in godot3 engine. The idea might help to change the steplight color of the car for example in some game.

Answer 1

您可以使用material_overrideMeshInstance 的属性和albedo_color材质 (SpatialMaterial) 的属性，将颜色设置为您需要的任何颜色：

下面的示例将 MeshInstance 的颜色更改为橙​​色：

func _ready():
    var newMaterial = SpatialMaterial.new() #Make a new Spatial Material
    newMaterial.albedo_color = Color(0.92, 0.69, 0.13, 1.0) #Set color of new material
    $"MeshInstance".material_override = newMaterial #Assign new material to material overrride

首先，创建一个新的 SpatialMaterial 并为其指定一个名称。然后，设置该材质的颜色并将该材质设置为 MashInstance 的覆盖材质。只需将“MeshIsntance”替换为您的 MeshInstance 的名称即可。例如，如果此行包含在附加到 MeshInstance 本身的脚本中：

func _ready():
    var newMaterial = SpatialMaterial.new()
    newMaterial.albedo_color = Color(0.92, 0.69, 0.13, 1.0)
    self.material_override = newMaterial

如果您想撤消覆盖：

self.material_override = null