Buildings can start burning (#29)

export_presets.cfg

@@ -8,7 +8,7 @@ custom_features=""
 export_filter="all_resources"
 include_filter="resources/Maps/*.sc2.mpz"
 exclude_filter="build/*, snapshots/*, resources/TestScenes/*, resources/HDR/*, addons/customization/*, addons/visual_shader_node_library/examples/*"
-export_path="build/sc_test_7_mac.dmg"
+export_path="build/sc_test_8_mac.dmg"
 encryption_include_filters=""
 encryption_exclude_filters=""
 encrypt_pck=false

native/Cargo.toml

@@ -19,4 +19,4 @@ thiserror = "1.0.56"
 anyhow = { version = "1.0.79" }
 rand = "0.8.5"
 
-godot-rust-script = { git = "https://github.com/titannano/godot-rust-script", rev = "da275fb0cb61e24571295c8d5a3cce4123fdce24" }
+godot-rust-script = { git = "https://github.com/titannano/godot-rust-script", rev = "7549d6fc208c545d3f06f02a68a7ce163073ce5d" }

native/src/scripts/mod.rs

@@ -1,3 +1,4 @@
+mod objects;
 mod particles;
 mod spawner;
 mod world;

native/src/scripts/objects.rs

@@ -0,0 +1 @@
+mod building;

native/src/scripts/objects/building.rs

@@ -0,0 +1,190 @@
+use godot::{
+    builtin::{Array, NodePath, Transform3D, Vector3},
+    engine::{MeshInstance3D, Node, Node3D, PackedScene, ResourceLoader, Time},
+    meta::ToGodot,
+    obj::{Gd, Inherits},
+};
+use godot_rust_script::{godot_script_impl, Context, GodotScript};
+use rand::Rng;
+use std::fmt::Debug;
+
+use crate::{util::logger, world::city_data::TileCoords};
+
+trait BuildingFeature<N: Inherits<Node>>: Debug {
+    fn process(&mut self, _delta: f64, _node: &mut Gd<N>) {}
+    fn physics_process(&mut self, _delta: f64, _node: &mut Gd<N>) {}
+}
+
+struct BuildingEventFlags(u8);
+
+impl BuildingEventFlags {
+    fn fire(&self) -> bool {
+        self.0 & 0b00000001 == 1
+    }
+}
+
+#[derive(Debug)]
+struct Features<F: Debug + ?Sized>(Vec<Box<F>>);
+
+impl<F: Debug + ?Sized> Features<F> {
+    pub fn push(&mut self, feature: Box<F>) {
+        self.0.push(feature);
+    }
+}
+
+impl<F: Debug + ?Sized> Default for Features<F> {
+    fn default() -> Self {
+        Self(Vec::default())
+    }
+}
+
+impl<N: Inherits<Node>> BuildingFeature<N> for Features<dyn BuildingFeature<N>> {
+    fn process(&mut self, delta: f64, node: &mut Gd<N>) {
+        for item in self.0.iter_mut() {
+            item.process(delta, node);
+        }
+    }
+
+    fn physics_process(&mut self, delta: f64, node: &mut Gd<N>) {
+        for item in self.0.iter_mut() {
+            item.physics_process(delta, node);
+        }
+    }
+}
+
+const FIRE_SPAWNER_SCENE: &str = "res://resources/Objects/Spawner/fire_spawner.tscn";
+
+#[derive(Debug)]
+struct FireFeature {
+    fire_scene: Option<Gd<Node3D>>,
+    last_fire: u64,
+    building_mesh: Gd<MeshInstance3D>,
+    tile_coords: TileCoords,
+}
+
+impl FireFeature {
+    fn new(tile_coords: TileCoords, mesh: &Gd<MeshInstance3D>) -> Self {
+        Self {
+            fire_scene: None,
+            last_fire: 0,
+            building_mesh: mesh.to_owned(),
+            tile_coords,
+        }
+    }
+}
+
+impl<N: Inherits<Node>> BuildingFeature<N> for FireFeature {
+    fn process(&mut self, _delta: f64, node: &mut Gd<N>) {
+        let current_ticks = Time::singleton().get_ticks_msec();
+
+        if let Some(ref mut scene) = self.fire_scene {
+            if current_ticks - self.last_fire < 60_000 {
+                return;
+            }
+
+            scene.queue_free();
+            self.fire_scene = None;
+            return;
+        }
+
+        let tick_delta = current_ticks - self.last_fire;
+        let tick_boost = (tick_delta + 10_000) as f64 / 10_000.0;
+        let rng = rand::thread_rng().gen_range(0.0..1.0);
+
+        let chance = rng * tick_boost;
+
+        if chance < 0.5 {
+            return;
+        }
+
+        let Some(scene) = ResourceLoader::singleton()
+            .load_ex(FIRE_SPAWNER_SCENE.into())
+            .type_hint("PackedScene".into())
+            .done()
+        else {
+            logger::error!("Failed to load fire_spawner scene: {}", FIRE_SPAWNER_SCENE);
+            return;
+        };
+
+        let Some(mut scene_instance) = scene.cast::<PackedScene>().try_instantiate_as::<Node3D>()
+        else {
+            logger::error!(
+                "Failed to instantiate fire_spawner scene as decendant of Node3D: {}",
+                FIRE_SPAWNER_SCENE
+            );
+            return;
+        };
+
+        let aabb = self.building_mesh.get_aabb();
+        let aabb_size = (Transform3D::new(self.building_mesh.get_basis(), Vector3::default())
+            * aabb.size)
+            .abs();
+
+        scene_instance.call_deferred("resize".into(), &[aabb_size.to_variant()]);
+
+        node.upcast_mut()
+            .add_child_ex(scene_instance.clone().upcast())
+            .force_readable_name(true)
+            .done();
+
+        self.fire_scene = Some(scene_instance);
+        self.last_fire = current_ticks;
+
+        logger::info!("Building started burning: {:?}", self.tile_coords);
+    }
+}
+
+#[derive(GodotScript, Debug)]
+#[script(base = Node)]
+struct Building {
+    #[export(flags = ["Fire:1"])]
+    pub events: u8,
+
+    #[export(node_path = ["MeshInstance3D"])]
+    pub mesh_path: NodePath,
+
+    pub tile_coords_array: Array<u32>,
+
+    tile_coords: TileCoords,
+
+    mesh: Option<Gd<MeshInstance3D>>,
+    features: Features<dyn BuildingFeature<Node>>,
+
+    base: Gd<Node>,
+}
+
+#[godot_script_impl]
+impl Building {
+    pub fn _ready(&mut self, mut context: Context) {
+        let events = BuildingEventFlags(self.events);
+
+        self.mesh = {
+            let mesh_path = self.mesh_path.clone();
+            let base = self.base.clone();
+
+            context.reentrant_scope(self, || base.try_get_node_as(mesh_path.to_owned()))
+        };
+
+        self.tile_coords = (
+            self.tile_coords_array.get(0).unwrap_or(0),
+            self.tile_coords_array.get(1).unwrap_or(0),
+        );
+
+        if events.fire() {
+            if let Some(ref mesh) = self.mesh {
+                self.features
+                    .push(Box::new(FireFeature::new(self.tile_coords, mesh)));
+            } else {
+                logger::warn!("Unable to instantiate FireFeature because no mesh has been set.");
+            }
+        }
+    }
+
+    pub fn _process(&mut self, delta: f64) {
+        self.features.process(delta, &mut self.base);
+    }
+
+    pub fn _physics_process(&mut self, delta: f64) {
+        self.features.physics_process(delta, &mut self.base);
+    }
+}

native/src/scripts/spawner/fire_spawner.rs

@@ -0,0 +1,98 @@
+use godot::{
+	builtin::{NodePath, Transform3D, Vector3, Vector3Axis},
+	engine::{light_3d, AnimationPlayer, FogVolume, Node, OmniLight3D},
+	obj::Gd,
+};
+use godot_rust_script::{godot_script_impl, GodotScript};
+
+use crate::util::logger;
+
+#[derive(GodotScript, Debug)]
+#[script(base = Node)]
+struct FireSpawner {
+	#[export(node_path = ["FogVolume"])]
+	pub fire_path: NodePath,
+	fire: Option<Gd<FogVolume>>,
+
+	#[export(node_path = ["FogVolume"])]
+	pub smoke_path: NodePath,
+	smoke: Option<Gd<FogVolume>>,
+
+	#[export(node_path = ["OmniLight3D"])]
+	pub light_source_path: NodePath,
+	light_source: Option<Gd<OmniLight3D>>,
+
+	#[export(node_path = ["AnimationPlayer"])]
+	pub audio_player_path: NodePath,
+	audio_player: Option<Gd<AnimationPlayer>>,
+
+	base: Gd<Node>,
+}
+
+#[godot_script_impl]
+impl FireSpawner {
+	pub fn _ready(&mut self) {
+		logger::debug!("Init Fire spawner...");
+		self.fire = self.base.try_get_node_as(self.fire_path.clone());
+		self.smoke = self.base.try_get_node_as(self.smoke_path.clone());
+		self.audio_player = self.base.try_get_node_as(self.audio_player_path.clone());
+		self.light_source = self.base.try_get_node_as(self.light_source_path.clone());
+
+		if let Some(ref mut audio_player) = self.audio_player {
+			audio_player.set_current_animation("burning".into());
+		} else {
+			logger::warn!("No audio player has been setup!");
+		}
+	}
+
+	pub fn resize(&mut self, size: Vector3) {
+		logger::debug!("Resizing fire spawner...");
+		let Some(ref mut fire) = self.fire else {
+			logger::error!("Failed to resize fire spawner! No fire setup!");
+			return;
+		};
+
+		let Some(ref mut smoke) = self.smoke else {
+			logger::error!("Failed to resize fire spawner! No smoke setup!");
+			return;
+		};
+
+		let Some(ref mut light_source) = self.light_source else {
+			logger::error!("Failed to resize fire spawner! No light source setup!");
+			return;
+		};
+
+		let smoke_ratio = smoke.get_size() / fire.get_size();
+		let fire_size = size * Vector3::new(1.0, 1.5, 1.0);
+		let smoke_size = fire_size * smoke_ratio;
+		let light_size = size;
+
+		fire.set_size(fire_size);
+		fire.set_transform(Transform3D::default().translated(Vector3::new(
+			0.0,
+			fire_size.y / 2.0 * 0.9,
+			0.0,
+		)));
+
+		smoke.set_size(smoke_size);
+		smoke.set_transform(Transform3D::default().translated(Vector3::new(
+			0.0,
+			smoke_size.y / 2.0 * 1.2,
+			0.0,
+		)));
+
+		let light_max_size = match light_size.max_axis().unwrap_or(Vector3Axis::X) {
+			Vector3Axis::X => light_size.x,
+			Vector3Axis::Y => light_size.y,
+			Vector3Axis::Z => light_size.z,
+		};
+
+		light_source.set_param(light_3d::Param::RANGE, light_size.length_squared());
+		light_source.set_param(light_3d::Param::SIZE, light_max_size);
+		light_source.set_transform(Transform3D::default().translated(Vector3::new(
+			0.0,
+			light_size.y / 2.0,
+			0.0,
+		)))
+	}
+}

native/src/scripts/spawner/mod.rs

@@ -1 +1,2 @@
 mod car_spawner;
+mod fire_spawner;

native/src/scripts/world/buildings.rs

@@ -147,11 +147,22 @@ impl Buildings {
             ));
         }
 
-        let (Some(mut instance), instance_time) = with_timing(|| object.instantiate()) else {
+        let (Some(mut instance), instance_time) =
+            with_timing(|| object.try_instantiate_as::<Node3D>())
+        else {
             logger::error!("failed to instantiate building {}", name);
             return;
         };
 
+        if !instance.get("tile_coords_array".into()).is_nil() {
+            let mut array = Array::new();
+
+            array.push(tile_coords.0);
+            array.push(tile_coords.1);
+
+            instance.set("tile_coords_array".into(), array.to_variant());
+        }
+
         let mut location = self.city_coords_feature.get_building_coords(
             tile_coords.0,
             tile_coords.1,
@@ -164,7 +175,7 @@ impl Buildings {
 
         let (_, insert_time) = with_timing(|| {
             self.get_sector(tile_coords)
-                .add_child_ex(instance.clone())
+                .add_child_ex(instance.clone().upcast())
                 .force_readable_name(true)
                 .done();
 

project.godot

@@ -116,16 +116,17 @@ limits/debugger_stdout/max_chars_per_second=1000000
 [physics]
 
 3d/default_gravity=9.81
+common/physics_interpolation=true
 common/physics_fps=120
 common/enable_pause_aware_picking=true
-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
+environment/volumetric_fog/volume_size=200
+environment/volumetric_fog/volume_depth=200
 lights_and_shadows/positional_shadow/atlas_16_bits=false
 threads/thread_model=2
-environment/default_environment="res://resources/Environments/default_env.tres"

resources/Environments/WorldEnv.tres

@@ -18,3 +18,6 @@ ssao_enabled = true
 sdfgi_enabled = true
 fog_light_color = Color(0.65, 0.84, 0.95, 1)
 fog_density = 0.001
+volumetric_fog_enabled = true
+volumetric_fog_density = 0.0
+volumetric_fog_length = 2000.0