Implement day night cycle

native/src/scripts/world.rs

@@ -1 +1,2 @@
 mod buildings;
+mod solar_setup;

native/src/scripts/world/solar_setup.rs

@@ -0,0 +1,55 @@
+use godot::builtin::{NodePath, Vector3};
+use godot::engine::{light_3d, DirectionalLight3D, Node3D, Time};
+use godot::obj::Gd;
+use godot_rust_script::{godot_script_impl, GodotScript};
+
+use crate::util::logger;
+
+#[derive(GodotScript, Debug)]
+#[script(base = Node3D)]
+struct SolarSetup {
+    /// Reference to the sun child node.
+    #[export(node_path = ["DirectionalLight3D"])]
+    pub sun: NodePath,
+
+    /// Reference to the moon child node.
+    #[export(node_path = ["DirectionalLight3D"])]
+    pub moon: NodePath,
+
+    #[export(range(min = 1.0, max = 120.0, step = 1.0))]
+    pub day_length: u64,
+
+    base: Gd<Node3D>,
+}
+
+#[godot_script_impl]
+impl SolarSetup {
+    fn sun(&self) -> Option<Gd<DirectionalLight3D>> {
+        self
+            .base
+            .get_window()
+            .and_then(|root| root.get_node(self.sun.clone()))
+        .map(|node| node.cast())
+    }
+
+    pub fn _physics_process(&mut self, _delta: f64) {
+        let day_length = self.day_length * 60 * 1000;
+        let time = Time::singleton().get_ticks_msec() % (day_length * 2);
+
+        let sun_pos = time as f32 * (360.0 / (day_length * 2) as f32);
+
+        let Some(mut sun) = self.sun() else {
+            logger::error!("no sun is assigned to solar setup!");
+
+            return;
+        };
+
+        self.base
+            .set_rotation_degrees(Vector3::new(sun_pos, 0.0, 0.0));
+
+        sun.set_param(
+            light_3d::Param::ENERGY,
+            if sun_pos > 190.0 { 0.0 } else { 1.0 },
+        );
+    }
+}

project.godot

@@ -123,6 +123,7 @@ common/physics_interpolation=true
 [rendering]
 
 textures/vram_compression/import_s3tc_bptc=true
+lights_and_shadows/directional_shadow/size=8192
 lights_and_shadows/directional_shadow/soft_shadow_filter_quality=4
 lights_and_shadows/directional_shadow/16_bits=false
 lights_and_shadows/positional_shadow/atlas_16_bits=false

resources/Environments/WorldEnv.tres

@@ -1,15 +1,13 @@
 [gd_resource type="Environment" load_steps=3 format=3 uid="uid://bl607wqoa882d"]
 
-[sub_resource type="ProceduralSkyMaterial" id="ProceduralSkyMaterial_c6t7k"]
-ground_bottom_color = Color(0.501961, 0.6, 0.701961, 1)
-ground_horizon_color = Color(0.501961, 0.6, 0.701961, 1)
+[ext_resource type="Material" uid="uid://c26tq15swq4at" path="res://resources/Materials/sky_material.tres" id="1_inrw2"]
 
-[sub_resource type="Sky" id="1"]
-sky_material = SubResource("ProceduralSkyMaterial_c6t7k")
+[sub_resource type="Sky" id="Sky_gwtol"]
+sky_material = ExtResource("1_inrw2")
 
 [resource]
 background_mode = 2
-sky = SubResource("1")
+sky = SubResource("Sky_gwtol")
 tonemap_mode = 3
 tonemap_exposure = 0.7
 ssr_enabled = true
@@ -18,6 +16,5 @@ ssr_fade_out = 1.0
 ssr_depth_tolerance = 0.51
 ssao_enabled = true
 sdfgi_enabled = true
-glow_enabled = true
 fog_light_color = Color(0.65, 0.84, 0.95, 1)
 fog_density = 0.001

resources/Materials/ocean_backdrop.tres

@@ -21,6 +21,7 @@ noise = SubResource("FastNoiseLite_ifgtm")
 render_priority = 0
 shader = ExtResource("2")
 shader_parameter/Wave_Ratio = 0.5
+shader_parameter/noise_scale = 0.02
 shader_parameter/Wave_Dir = 0.124
 shader_parameter/speed = 0.1
 shader_parameter/Wave2_Dir = 0.569

resources/Materials/sky_material.tres

@@ -0,0 +1,26 @@
+[gd_resource type="ShaderMaterial" load_steps=6 format=3 uid="uid://c26tq15swq4at"]
+
+[ext_resource type="Shader" uid="uid://dadtbq4ym2chm" path="res://resources/Shaders/sky.tres" id="1_gixr0"]
+
+[sub_resource type="Gradient" id="Gradient_klkl5"]
+offsets = PackedFloat32Array(0.354386, 0.421053, 0.610526)
+colors = PackedColorArray(0, 0, 0, 1, 0.137255, 0.32549, 0.639216, 1, 0.137255, 0.32549, 0.639216, 1)
+
+[sub_resource type="GradientTexture2D" id="GradientTexture2D_scq8q"]
+gradient = SubResource("Gradient_klkl5")
+fill_from = Vector2(0, 1)
+fill_to = Vector2(0, 0)
+
+[sub_resource type="Gradient" id="Gradient_0sht1"]
+interpolation_color_space = 1
+offsets = PackedFloat32Array(0.0350877, 0.463158)
+colors = PackedColorArray(1, 0.466667, 0, 1, 0.375132, 0.588795, 0.748625, 1)
+
+[sub_resource type="GradientTexture1D" id="GradientTexture1D_lmpjt"]
+gradient = SubResource("Gradient_0sht1")
+
+[resource]
+shader = ExtResource("1_gixr0")
+shader_parameter/moon_size = 0.06
+shader_parameter/Texture2DParameter = SubResource("GradientTexture2D_scq8q")
+shader_parameter/sun_rise_gradient = SubResource("GradientTexture1D_lmpjt")

resources/Materials/terrain_material.tres

@@ -10,8 +10,7 @@ shader_parameter/albedo = Color(0.482353, 0.356863, 0.27451, 1)
 shader_parameter/specular = 0.5
 shader_parameter/metallic = 0.0
 shader_parameter/roughness = 1.0
-shader_parameter/ao_texture_channel = Plane(1, 0, 0, 0)
+shader_parameter/ao_texture_channel = null
 shader_parameter/ao_light_affect = 0.0
-shader_parameter/transmission = Color(0.517647, 0.823529, 0.262745, 1)
 shader_parameter/uv1_scale = Vector3(1, 1, 1)
 shader_parameter/uv1_offset = Vector3(0, 0, 0)

resources/Shaders/ocean_visualshader.tres

@@ -805,7 +805,6 @@ void fragment() {
 
 }
 "
-graph_offset = Vector2(-914.285, -256.322)
 varyings/vary_world_uv = "0,3"
 varyings/vary_world_uv2 = "0,3"
 nodes/vertex/0/position = Vector2(3340, -540)