treadmill shader fix

previously when adjusting the value of the shader, it would change the value for all shaders.

now it duplicates the shader at runtime so it's a unique copy and can have it's own unique shhader value

Map/map_tread.tscn

@@ -17,7 +17,7 @@ shader_param/speed = 1.0
 [node name="Node2D" type="Node2D"]
 
 [node name="SolidTileMap" parent="." instance=ExtResource( 4 )]
-tile_data = PoolIntArray( 65516, 0, 0, 65517, 0, 0, 65518, 0, 0, 65519, 0, 0, 65520, 0, 0, 65521, 0, 0, 65529, 0, 65538, 65530, 0, 65536, 65531, 0, 65538, 65532, 0, 0, 65533, 0, 0, 65534, 0, 65537, 65535, 0, 0, 0, 0, 0, 1, 0, 65538, 2, 0, 0, 3, 0, 65537, 4, 0, 0, 5, 0, 0, 6, 0, 196609, 131057, 0, 0, 131058, 0, 0, 131059, 0, 0, 131060, 0, 0, 131061, 0, 0, 131062, 0, 0, 131063, 0, 0, 131064, 0, 0, 131065, 0, 0 )
+tile_data = PoolIntArray( 65529, 0, 65538, 65530, 0, 65536, 65531, 0, 65538, 65532, 0, 0, 65533, 0, 0, 65534, 0, 65537, 65535, 0, 0, 0, 0, 0, 1, 0, 65538, 2, 0, 0, 3, 0, 65537, 4, 0, 0, 5, 0, 0, 6, 0, 196609, 131047, 0, 0, 131048, 0, 0, 131049, 0, 0, 131050, 0, 0, 131051, 0, 0, 131058, 0, 0, 131059, 0, 0, 131060, 0, 0, 131061, 0, 0, 131062, 0, 0, 131063, 0, 0, 131064, 0, 0, 131065, 0, 0, 196587, 0, 0, 196588, 0, 0, 196589, 0, 0, 196590, 0, 0, 196591, 0, 0, 196592, 0, 0, 196593, 0, 0, 196594, 0, 0 )
 
 [node name="SpikeTileMap" parent="." instance=ExtResource( 7 )]
 z_as_relative = false
@@ -47,9 +47,26 @@ position = Vector2( -37, -8 )
 [node name="Treadmill7" parent="Actors" instance=ExtResource( 1 )]
 position = Vector2( -112, 0 )
 hitbox_x = 56
-tread_speed = -0.5
+tread_speed = -0.3
 length = 7
 
+[node name="Treadmill8" parent="Actors" instance=ExtResource( 1 )]
+position = Vector2( -200, 0 )
+hitbox_x = 40
+tread_speed = 0.3
+length = 5
+
+[node name="Treadmill9" parent="Actors" instance=ExtResource( 1 )]
+position = Vector2( -160, 8 )
+hitbox_x = 24
+length = 3
+
+[node name="Treadmill10" parent="Actors" instance=ExtResource( 1 )]
+position = Vector2( -136, 8 )
+hitbox_x = 24
+tread_speed = 0.5
+length = 3
+
 [node name="Sprite" type="Sprite" parent="."]
 visible = false
 material = SubResource( 1 )

Scene/Treadmill.tscn

@@ -2,11 +2,20 @@
 
 [ext_resource path="res://Script/Treadmill.gd" type="Script" id=1]
 [ext_resource path="res://Image/tread.png" type="Texture" id=2]
-[ext_resource path="res://Shader/scrollx.shader" type="Shader" id=3]
 
-[sub_resource type="ShaderMaterial" id=1]
-shader = ExtResource( 3 )
-shader_param/speed = 0.7
+[sub_resource type="Shader" id=1]
+code = "shader_type canvas_item;
+render_mode blend_mix;
+
+uniform float speed = 1.0;
+void fragment() {
+    COLOR = texture(TEXTURE, UV + vec2(TIME * speed, 0.0));
+}"
+custom_defines = ""
+
+[sub_resource type="ShaderMaterial" id=2]
+shader = SubResource( 1 )
+shader_param/speed = 4.0
 
 [node name="Treadmill" type="Node2D" groups=[
 "actor",
@@ -15,10 +24,10 @@ shader_param/speed = 0.7
 script = ExtResource( 1 )
 tag = "treadmill"
 is_solid = true
-tread_speed = -0.7
+tread_speed = -0.5
 
 [node name="Sprite" type="Sprite" parent="."]
-material = SubResource( 1 )
+material = SubResource( 2 )
 texture = ExtResource( 2 )
 centered = false
 region_enabled = true

Script/Treadmill.gd

@@ -8,10 +8,14 @@ export var editor_move := 0 setget _set_editor_move
 
 var node_sprite : Sprite
 
-
 func _ready():
 	# editor and game code
 	node_sprite = $Sprite
+	node_sprite.material = node_sprite.material.duplicate(true)
+	#node_sprite.material = node_sprite.get_material().duplicate(true)
+	#node_sprite.set_material(node_sprite.get_material().duplicate(true))
+	print(node_sprite.material)
+	
 	_set_tread_speed(tread_speed)
 	_set_length(length)
 	

project.godot

@@ -88,7 +88,6 @@ Shared="*res://Script/Shared.gd"
 
 window/size/width=320
 window/size/height=180
-window/size/always_on_top=true
 window/dpi/allow_hidpi=true
 window/stretch/mode="viewport"
 window/stretch/aspect="keep"