Added animation automata to ships and projectiles

crates/content/src/animautomaton.rs

@@ -2,7 +2,7 @@ use crate::{AnimSectionHandle, Content, SectionEdge, SpriteHandle};
 
 /// A single frame's state
 #[derive(Debug, Clone)]
-pub struct SpriteAnimationFrame {
+pub struct AnimationState {
 	/// The index of the texture we're fading from
 	pub texture_a: u32,
 
@@ -16,7 +16,7 @@ pub struct SpriteAnimationFrame {
 	pub fade: f32,
 }
 
-impl SpriteAnimationFrame {
+impl AnimationState {
 	/// Convenience method.
 	/// Get texture index as an array
 	pub fn texture_index(&self) -> [u32; 2] {
@@ -224,8 +224,8 @@ impl AnimAutomaton {
 	}
 
 	/// Get the current frame of this animation
-	pub fn get_texture_idx(&self) -> SpriteAnimationFrame {
-		return SpriteAnimationFrame {
+	pub fn get_texture_idx(&self) -> AnimationState {
+		return AnimationState {
 			texture_a: self.last_texture,
 			texture_b: self.next_texture,
 			fade: self.current_fade,

crates/system/src/phys/objects/projectile.rs

@@ -1,4 +1,4 @@
-use galactica_content::{FactionHandle, Projectile};
+use galactica_content::{AnimAutomaton, AnimationState, Content, FactionHandle, Projectile};
 use rand::Rng;
 use rapier2d::{dynamics::RigidBodyHandle, geometry::ColliderHandle};
 
@@ -8,6 +8,9 @@ pub struct PhysProjectile {
 	/// This projectile's game data
 	pub content: Projectile,
 
+	/// This projectile's sprite animation state
+	anim: AnimAutomaton,
+
 	/// The remaining lifetime of this projectile, in seconds
 	pub lifetime: f32,
 
@@ -27,7 +30,8 @@ pub struct PhysProjectile {
 impl PhysProjectile {
 	/// Create a new projectile
 	pub fn new(
-		content: Projectile, // TODO: use a handle
+		ct: &Content,
+		content: Projectile, // TODO: use a handle?
 		rigid_body: RigidBodyHandle,
 		faction: FactionHandle,
 		collider: ColliderHandle,
@@ -36,6 +40,7 @@ impl PhysProjectile {
 		let size_rng = content.size_rng;
 		let lifetime = content.lifetime;
 		PhysProjectile {
+			anim: AnimAutomaton::new(ct, content.sprite),
 			rigid_body,
 			collider,
 			content,
@@ -46,8 +51,9 @@ impl PhysProjectile {
 	}
 
 	/// Process this projectile's state after `t` seconds
-	pub fn tick(&mut self, t: f32) {
+	pub fn tick(&mut self, ct: &Content, t: f32) {
 		self.lifetime -= t;
+		self.anim.step(ct, t)
 	}
 
 	/// Has this projectile expired?
@@ -55,3 +61,10 @@ impl PhysProjectile {
 		return self.lifetime < 0.0;
 	}
 }
+
+impl PhysProjectile {
+	/// Get this projectile's animation state
+	pub fn get_anim_state(&self) -> AnimationState {
+		self.anim.get_texture_idx()
+	}
+}

crates/system/src/phys/objects/ship.rs

@@ -1,4 +1,6 @@
-use galactica_content::{Content, FactionHandle, ShipHandle};
+use galactica_content::{
+	AnimAutomaton, AnimationState, Content, EnginePoint, FactionHandle, OutfitHandle, ShipHandle,
+};
 use nalgebra::{point, vector, Rotation2, Vector2};
 use rand::Rng;
 use rapier2d::{
@@ -51,7 +53,13 @@ pub struct PhysSimShip {
 	pub collider: ColliderHandle,
 
 	/// This ship's game data
-	pub data: ShipData,
+	pub(crate) data: ShipData,
+
+	/// This ship's sprite animation state
+	anim: AnimAutomaton,
+
+	/// Animation state for each of this ship's engines
+	engine_anim: Vec<(EnginePoint, AnimAutomaton)>,
 
 	/// This ship's controls
 	pub(crate) controls: ShipControls,
@@ -72,9 +80,11 @@ impl PhysSimShip {
 	) -> Self {
 		let ship_ct = ct.get_ship(handle);
 		PhysSimShip {
+			anim: AnimAutomaton::new(ct, ship_ct.sprite),
 			rigid_body,
 			collider,
 			data: ShipData::new(ct, handle, faction, personality),
+			engine_anim: Vec::new(),
 			controls: ShipControls::new(),
 			collapse_sequence: Some(ShipCollapseSequence::new(ship_ct.collapse.length)),
 		}
@@ -88,6 +98,18 @@ impl PhysSimShip {
 		collider: &mut Collider,
 	) {
 		self.data.step(res.t);
+		self.anim.step(res.ct, res.t);
+
+		if self.controls.thrust {
+			for (_, e) in &mut self.engine_anim {
+				e.step(res.ct, res.t);
+			}
+		} else {
+			for (_, e) in &mut self.engine_anim {
+				e.reset(res.ct);
+			}
+		}
+
 		match self.data.get_state() {
 			ShipState::Collapsing { .. } => {
 				// Borrow checker hack, so we may pass self.data
@@ -197,9 +219,69 @@ impl PhysSimShip {
 	}
 }
 
+/// Public mutable
+impl PhysSimShip {
+	/// Re-create this ship's engine flare animations
+	/// Should be called whenever we change outfits
+	fn update_flares(&mut self, ct: &Content) {
+		// TODO: better way to pick flare sprite
+		let mut flare = None;
+		for (h, _) in self.data.get_outfits().iter_outfits() {
+			let c = ct.get_outfit(*h);
+			if c.engine_flare_sprite.is_some() {
+				flare = c.engine_flare_sprite;
+				break;
+			}
+		}
+
+		if flare.is_none() {
+			self.engine_anim = Vec::new();
+			return;
+		}
+
+		let flare = flare.unwrap();
+		self.engine_anim = ct
+			.get_ship(self.data.get_content())
+			.engines
+			.iter()
+			.map(|e| (e.clone(), AnimAutomaton::new(ct, flare)))
+			.collect();
+	}
+
+	/// Add one outfit to this ship
+	pub fn add_outfit(&mut self, ct: &Content, o: OutfitHandle) {
+		self.data.add_outfit(ct.get_outfit(o));
+		self.update_flares(ct);
+	}
+
+	/// Add many outfits to this ship
+	pub fn add_outfits(&mut self, ct: &Content, outfits: impl IntoIterator<Item = OutfitHandle>) {
+		for o in outfits {
+			self.data.add_outfit(ct.get_outfit(o));
+		}
+		self.update_flares(ct);
+	}
+}
+
+/// Public immutable
 impl PhysSimShip {
 	/// Get this ship's control state
 	pub fn get_controls(&self) -> &ShipControls {
 		&self.controls
 	}
+
+	/// Get this ship's engine animations
+	pub fn iter_engine_anim(&self) -> impl Iterator<Item = &(EnginePoint, AnimAutomaton)> {
+		self.engine_anim.iter()
+	}
+
+	/// Get this ship's animation state
+	pub fn get_anim_state(&self) -> AnimationState {
+		self.anim.get_texture_idx()
+	}
+
+	/// Get this ship's game data struct
+	pub fn get_data(&self) -> &ShipData {
+		&self.data
+	}
 }