Reinstate clouds shadow

scenes/game_elements/fx/clouds_shadow/clouds_shadow.tscn

@@ -0,0 +1,45 @@
+[gd_scene format=3 uid="uid://c0374lgarm8gj"]
+
+[ext_resource type="Shader" uid="uid://blck4l5cl837d" path="res://scenes/game_elements/fx/clouds_shadow/components/clouds_shadow.gdshader" id="1_02eyt"]
+[ext_resource type="Script" uid="uid://8ayl2vtjam10" path="res://scenes/game_elements/fx/clouds_shadow/components/clouds_shadow.gd" id="1_vhj68"]
+
+[sub_resource type="FastNoiseLite" id="FastNoiseLite_jw523"]
+frequency = 0.0075
+
+[sub_resource type="NoiseTexture2D" id="NoiseTexture2D_02eyt"]
+width = 168
+height = 256
+noise = SubResource("FastNoiseLite_jw523")
+seamless = true
+seamless_blend_skirt = 0.8
+
+[sub_resource type="ShaderMaterial" id="ShaderMaterial_2vvub"]
+shader = ExtResource("1_02eyt")
+shader_parameter/shadow_texture = SubResource("NoiseTexture2D_02eyt")
+shader_parameter/amount = 0.35
+shader_parameter/contrast = 25.0
+shader_parameter/speed = Vector2(0.015, 0.01)
+shader_parameter/alpha = 0.1
+
+[node name="CloudsShadow" type="Parallax2D" unique_id=1515275591]
+editor_description = "This Parallax2D node is used to repeat the texture so it's bigger than the viewport size. And to scroll it with the camera.
+"
+top_level = true
+repeat_size = Vector2(1024, 1024)
+repeat_times = 3
+script = ExtResource("1_vhj68")
+
+[node name="ColorRect" type="ColorRect" parent="." unique_id=1045851952]
+unique_name_in_owner = true
+editor_description = "Start with a small noise texture that is then upscaled to a square. The size of this ColorRect.
+
+The texture width is about 2/3 of its height to look flattened, matching the game perspective. This way the shadow seems to be projected on the ground.
+"
+material = SubResource("ShaderMaterial_2vvub")
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_right = 1024.0
+offset_bottom = 1024.0
+grow_horizontal = 2
+grow_vertical = 2

scenes/game_elements/fx/clouds_shadow/components/clouds_shadow.gd

@@ -0,0 +1,31 @@
+# SPDX-FileCopyrightText: The Threadbare Authors
+# SPDX-License-Identifier: MPL-2.0
+@tool
+extends Parallax2D
+
+@export_tool_button("Random Clouds") var randomize_button: Callable = randomize
+
+@export var _seed: int:
+	set = _set_seed
+
+var texture: NoiseTexture2D
+var noise: FastNoiseLite
+
+@onready var color_rect: ColorRect = %ColorRect
+
+
+func _set_seed(new_seed: int) -> void:
+	_seed = new_seed
+	if noise:
+		noise.seed = _seed
+		await texture.changed
+
+
+func _ready() -> void:
+	texture = (color_rect.material as ShaderMaterial).get_shader_parameter("shadow_texture")
+	noise = texture.noise
+	_set_seed(_seed)
+
+
+func randomize() -> void:
+	await _set_seed(randi())

scenes/game_elements/fx/clouds_shadow/components/clouds_shadow.gd.uid

@@ -0,0 +1 @@
+uid://8ayl2vtjam10

scenes/game_elements/fx/clouds_shadow/components/clouds_shadow.gdshader

@@ -0,0 +1,61 @@
+/**
+ * SPDX-FileCopyrightText: The Threadbare Authors
+ * SPDX-License-Identifier: MPL-2.0
+ */
+shader_type canvas_item;
+
+/**
+ * The shader is set to subtract because it's a shadow.
+ */
+render_mode blend_sub;
+
+/**
+ * Use a Simplex noise for a dynamic texture. Or provide your own grayscale tileable texture!
+ */
+uniform sampler2D shadow_texture: filter_nearest, repeat_enable;
+
+/**
+ * How much covered by clouds is the sky.
+ * - 0: Zero shadows.
+ * - 1: All dark.
+ * This parameter could be animated!
+ */
+uniform float amount: hint_range(0.0, 1.0) = 0.35;
+
+/**
+ * How much contrast. Or how much defined is the shadow silhouette.
+ */
+uniform float contrast: hint_range(0.0, 50.0) = 25.0;
+
+/**
+ * Animate the clouds.
+ * A 2/3 velocity emphasizes the world perspective.
+ */
+uniform vec2 speed = vec2(0.015,0.01);
+
+/**
+ * How much alpha. Keep this subtle.
+ */
+uniform float alpha: hint_range(0.0, 1.0) = 0.1;
+
+
+void fragment() {
+	// Displace the UV to animate the shadow.
+	vec2 uv = UV + speed * TIME;
+
+	float shadow = texture(shadow_texture, uv).r;
+
+	// Add amount value.
+	shadow = amount - shadow;
+
+	// Apply contrast to define the shadow silhouette.
+	// The result may be outside of the 0-1 range.
+	shadow = shadow * contrast + 0.5;
+
+	// Normalize the values to land between 0 and 1 again
+	// after applying contrast.
+	shadow = clamp(shadow, 0.0, 1.0);
+
+	// Apply alpha.
+	COLOR.a = alpha * shadow;
+}

scenes/game_elements/fx/clouds_shadow/components/clouds_shadow.gdshader.uid

@@ -0,0 +1 @@
+uid://blck4l5cl837d

scenes/world_map/frays_end.tscn

@@ -52,6 +52,7 @@
 [ext_resource type="PackedScene" uid="uid://vb5o7hh5an8j" path="res://scenes/game_elements/characters/npcs/elder/template_elder.tscn" id="43_ppslc"]
 [ext_resource type="PackedScene" uid="uid://c0104ickpm3ru" path="res://scenes/game_elements/props/decoration/flower/flower.tscn" id="45_cjmkx"]
 [ext_resource type="PackedScene" uid="uid://cr65lmm5b0ueo" path="res://scenes/game_elements/characters/npcs/cat/cat.tscn" id="52_ppslc"]
+[ext_resource type="PackedScene" uid="uid://c0374lgarm8gj" path="res://scenes/game_elements/fx/clouds_shadow/clouds_shadow.tscn" id="54_ns5r3"]
 [ext_resource type="Script" uid="uid://cbj0406q05dly" path="res://scenes/game_elements/props/hint/input_key/interact_input.gd" id="55_wymun"]
 
 [sub_resource type="RectangleShape2D" id="RectangleShape2D_h30yx"]
@@ -1059,3 +1060,5 @@ shape = SubResource("RectangleShape2D_djq26")
 
 [node name="SpawnPointAfterIntro" parent="." unique_id=69976262 instance=ExtResource("37_thm8h")]
 position = Vector2(62, 1747)
+
+[node name="CloudsShadow" parent="." unique_id=1515275591 instance=ExtResource("54_ns5r3")]