Added basic landing animation

crates/galactica/src/main.rs

@@ -42,6 +42,7 @@ fn main() -> Result<()> {
 	let mut gpu = pollster::block_on(galactica_render::GPUState::new(window, &content))?;
 	gpu.init(&content);
 
+	// TODO: don't clone content
 	let mut game = game::Game::new(content.clone());
 	let p = game.make_player();
 
@@ -96,6 +97,11 @@ fn main() -> Result<()> {
 										None
 									}
 								}
+								ShipState::Landing { .. } => {
+									let pos =
+										o.data.get_state().landing_position(&content).unwrap();
+									Some(Point2 { x: pos.x, y: pos.y })
+								}
 								ShipState::Landed { target } => {
 									let b = content.get_system_object(*target);
 									Some(Point2 {
@@ -103,6 +109,8 @@ fn main() -> Result<()> {
 										y: b.pos.y,
 									})
 								}
+
+								ShipState::Dead => None,
 							}
 						} else {
 							None

crates/render/src/gpustate/phys.rs

@@ -1,7 +1,7 @@
 //! GPUState routines for drawing items in a systemsim
 
 use bytemuck;
-use cgmath::{EuclideanSpace, InnerSpace, Point2, Vector2};
+use cgmath::{EuclideanSpace, InnerSpace, Point2, Point3, Vector2};
 use galactica_system::{data::ShipState, phys::util};
 use galactica_util::constants::OBJECT_SPRITE_INSTANCE_LIMIT;
 
@@ -19,28 +19,64 @@ impl GPUState {
 		screen_clip: (Point2<f32>, Point2<f32>),
 	) {
 		for ship in state.systemsim.iter_ships() {
-			match ship.data.get_state() {
-				ShipState::Collapsing { .. } | ShipState::Flying => {}
-				ShipState::Landed { .. } => continue,
-			}
+			// TODO: move collapse sequence here?
 
-			let r = state.systemsim.get_rigid_body(ship.rigid_body).unwrap();
-			let ship_pos = util::rigidbody_position(&r);
-			let ship_rot = util::rigidbody_rotation(r);
-			let ship_ang = -ship_rot.angle(Vector2 { x: 0.0, y: 1.0 }); // TODO: inconsistent angles. Fix!
-			let ship_cnt = state.ct.get_ship(ship.data.get_content());
+			let ship_pos;
+			let ship_ang;
+			let ship_cnt;
+			match ship.data.get_state() {
+				ShipState::Dead | ShipState::Landed { .. } => continue,
+
+				ShipState::Collapsing { .. } | ShipState::Flying => {
+					let r = state.systemsim.get_rigid_body(ship.rigid_body).unwrap();
+					let pos = util::rigidbody_position(&r);
+					ship_pos = Point3 {
+						x: pos.x,
+						y: pos.y,
+						z: 1.0,
+					};
+					let ship_rot = util::rigidbody_rotation(r);
+					ship_ang = -ship_rot.angle(Vector2 { x: 0.0, y: 1.0 }); // TODO: inconsistent angles. Fix!
+					ship_cnt = state.ct.get_ship(ship.data.get_content());
+				}
+				ShipState::Landing {
+					from_position,
+					from_angle,
+					target,
+					total: _total,
+					elapsed,
+				} => {
+					let target = state.ct.get_system_object(*target);
+
+					let diff = Point2 {
+						x: target.pos.x,
+						y: target.pos.y,
+					} - from_position;
+
+					ship_pos = ship.data.get_state().landing_position(state.ct).unwrap();
+
+					let target_angle = -diff.angle(Vector2 { x: 0.0, y: 1.0 });
+
+					ship_ang = from_angle + ((target_angle - from_angle) * 1f32.min(elapsed / 1.0));
+					ship_cnt = state.ct.get_ship(ship.data.get_content());
+				}
+			}
 
 			// Position adjusted for parallax
 			// TODO: adjust parallax for zoom?
 			// 1.0 is z-coordinate, which is constant for ships
-			let pos: Point2<f32> = (ship_pos - state.camera_pos.to_vec()) / 1.0;
+			let pos: Point2<f32> = (Point2 {
+				x: ship_pos.x,
+				y: ship_pos.y,
+			} - state.camera_pos.to_vec())
+				/ ship_pos.z;
 
 			// Game dimensions of this sprite post-scale.
 			// Post-scale width or height, whichever is larger.
 			// This is in game units.
 			//
 			// We take the maximum to account for rotated sprites.
-			let m = (ship_cnt.size / 1.0) * ship_cnt.sprite.aspect.max(1.0);
+			let m = (ship_cnt.size / ship_pos.z) * ship_cnt.sprite.aspect.max(1.0);
 
 			// Don't draw sprites that are off the screen
 			if pos.x < screen_clip.0.x - m
@@ -59,7 +95,7 @@ impl GPUState {
 				bytemuck::cast_slice(&[ObjectData {
 					xpos: ship_pos.x,
 					ypos: ship_pos.y,
-					zpos: 1.0,
+					zpos: ship_pos.z,
 					angle: ship_ang.0,
 					size: ship_cnt.size,
 					parent: 0,
@@ -86,7 +122,13 @@ impl GPUState {
 			self.state.vertex_buffers.object_counter += 1;
 
 			let flare = ship.data.get_outfits().get_flare_sprite(state.ct);
-			if ship.get_controls().thrust && flare.is_some() && ship.data.get_state().is_flying() {
+			if {
+				let is_flying = match ship.data.get_state() {
+					ShipState::Flying => true,
+					_ => false,
+				};
+				ship.get_controls().thrust && flare.is_some() && is_flying
+			} {
 				for engine_point in &ship_cnt.engines {
 					self.state.queue.write_buffer(
 						&self.state.global_uniform.object_buffer,

crates/render/src/ui/radar.rs

@@ -39,6 +39,18 @@ impl Radar {
 			.unwrap();
 
 		match player_ship.data.get_state() {
+			ShipState::Dead => {}
+
+			// TODO: radar follows while landing
+			ShipState::Landing { .. } => {
+				let pos = player_ship
+					.data
+					.get_state()
+					.landing_position(&input.ct)
+					.unwrap();
+				self.last_player_position = Point2 { x: pos.x, y: pos.y }
+			}
+
 			ShipState::Landed { target } => {
 				let landed_body = input.ct.get_system_object(*target);
 				self.last_player_position = Point2 {
@@ -133,10 +145,12 @@ impl Radar {
 			// This will be None if this ship is dead.
 			// Stays around while the physics system runs a collapse sequence
 			let color = match s.data.get_state() {
-				ShipState::Landed { .. } => {
+				ShipState::Dead | ShipState::Landed { .. } => {
 					continue;
 				}
-				ShipState::Collapsing { .. } => {
+
+				// TODO: different color for landing?
+				ShipState::Landing { .. } | ShipState::Collapsing { .. } => {
 					// TODO: configurable
 					[0.2, 0.2, 0.2, 1.0]
 				}

crates/render/src/ui/status.rs

@@ -37,10 +37,19 @@ impl Status {
 			.unwrap();
 
 		match player_ship.data.get_state() {
-			ShipState::Landed { .. } | ShipState::Collapsing { .. } | ShipState::Flying => {
+			ShipState::Dead => {
+				current_shields = 0.0;
+				current_hull = 0.0;
 				max_shields = player_ship.data.get_outfits().get_shield_strength();
+				max_hull = input.ct.get_ship(player_ship.data.get_content()).hull;
+			}
+			ShipState::Landing { .. }
+			| ShipState::Landed { .. }
+			| ShipState::Collapsing { .. }
+			| ShipState::Flying => {
 				current_shields = player_ship.data.get_shields();
 				current_hull = player_ship.data.get_hull();
+				max_shields = player_ship.data.get_outfits().get_shield_strength();
 				max_hull = input.ct.get_ship(player_ship.data.get_content()).hull;
 			}
 		}

crates/system/src/data/ship/ship.rs

@@ -1,6 +1,7 @@
 use std::{collections::HashMap, time::Instant};
 
 use super::{OutfitSet, ShipPersonality};
+use cgmath::{InnerSpace, Point2, Point3, Rad};
 use galactica_content::{Content, FactionHandle, GunPoint, Outfit, ShipHandle, SystemObjectHandle};
 use rand::{rngs::ThreadRng, Rng};
 
@@ -10,6 +11,9 @@ use rand::{rngs::ThreadRng, Rng};
 /// sequence fully plays out.
 #[derive(Debug, Clone)]
 pub enum ShipState {
+	/// This ship is dead, and should be removed from the game.
+	Dead,
+
 	/// This ship is alive and well in open space
 	Flying, // TODO: system, position (also in collapse)?
 
@@ -27,41 +31,28 @@ pub enum ShipState {
 		/// The planet this ship is landed on
 		target: SystemObjectHandle,
 	},
+
+	/// This ship is landing on a planet
+	/// (playing the animation)
+	Landing {
+		/// The point, in world coordinates, where we started
+		from_position: Point2<f32>,
+
+		/// The ship's angle when we started landing
+		from_angle: Rad<f32>,
+
+		/// The planet we're landing on
+		target: SystemObjectHandle,
+
+		/// The total amount of time, in seconds, we will spend landing
+		total: f32,
+
+		/// The amount of time we've already spent playing the landing sequence
+		elapsed: f32,
+	},
 }
 
 impl ShipState {
-	/// Is this ship playing its collapse sequence?
-	pub fn is_collapsing(&self) -> bool {
-		match self {
-			Self::Collapsing { .. } => true,
-			_ => false,
-		}
-	}
-	/// Is this ship flying in open space?
-	pub fn is_flying(&self) -> bool {
-		match self {
-			Self::Flying => true,
-			_ => false,
-		}
-	}
-
-	/// Is this ship landed on a planet?
-	pub fn is_landed(&self) -> bool {
-		match self {
-			Self::Landed { .. } => true,
-			_ => false,
-		}
-	}
-
-	/// True if this ship has been destroyed and has finished it's collapse sequence.
-	/// Ships are deleted once this is true.
-	pub fn should_be_removed(&self) -> bool {
-		match self {
-			Self::Collapsing { elapsed, total } => elapsed >= total,
-			_ => false,
-		}
-	}
-
 	/// What planet is this ship landed on?
 	pub fn landed_on(&self) -> Option<SystemObjectHandle> {
 		match self {
@@ -81,6 +72,42 @@ impl ShipState {
 			_ => None,
 		}
 	}
+
+	/// Compute position of this ship's sprite during its landing sequence
+	pub fn landing_position(&self, ct: &Content) -> Option<Point3<f32>> {
+		match self {
+			Self::Landing {
+				from_position,
+				target,
+				total,
+				elapsed,
+				..
+			} => Some({
+				let target = ct.get_system_object(*target);
+
+				let diff = Point2 {
+					x: target.pos.x,
+					y: target.pos.y,
+				} - from_position;
+				let diff = diff - diff.normalize() * (target.size / 2.0) * 0.8;
+
+				// TODO: improve animation
+				// TODO: fade
+				// TODO: atmosphere burn
+				// TODO: land at random point
+				// TODO: don't jump camera
+
+				let pos = from_position + (diff * (elapsed / total));
+
+				Point3 {
+					x: pos.x,
+					y: pos.y,
+					z: 1.0 + ((target.pos.z - 1.0) * (elapsed / total)),
+				}
+			}),
+			_ => None,
+		}
+	}
 }
 
 /// Represents all attributes of a single ship
@@ -136,26 +163,41 @@ impl ShipData {
 		}
 	}
 
+	// TODO: position in data?
 	/// Land this ship on `target`
-	pub fn land_on(&mut self, target: SystemObjectHandle) -> bool {
-		if self.state.is_flying() {
-			self.state = ShipState::Landed { target };
-		} else {
-			return false;
-		}
-
-		return true;
+	pub fn land_on(
+		&mut self,
+		target: SystemObjectHandle,
+		from_position: Point2<f32>,
+		from_angle: Rad<f32>,
+	) -> bool {
+		match self.state {
+			ShipState::Flying => {
+				self.state = ShipState::Landing {
+					elapsed: 0.0,
+					total: 5.0,
+					target,
+					from_position,
+					from_angle,
+				};
+				return true;
+			}
+			_ => {
+				unreachable!("Called `land_on` on a ship that isn't flying!")
+			}
+		};
 	}
 
 	/// Take off from `target`
-	pub fn unland(&mut self) -> bool {
-		if self.state.is_landed() {
-			self.state = ShipState::Flying;
-		} else {
-			return false;
-		}
-
-		return true;
+	pub fn unland(&mut self) {
+		match self.state {
+			ShipState::Landed { .. } => {
+				self.state = ShipState::Flying;
+			}
+			_ => {
+				unreachable!("Called `unland` on a ship that isn't landed!")
+			}
+		};
 	}
 
 	/// Add an outfit to this ship
@@ -194,9 +236,13 @@ impl ShipData {
 
 	/// Hit this ship with the given amount of damage
 	pub(crate) fn apply_damage(&mut self, ct: &Content, mut d: f32) {
-		if self.state.is_collapsing() {
-			return;
+		match self.state {
+			ShipState::Flying => {}
+			_ => {
+				unreachable!("Cannot apply damage to a ship that is not flying!")
+			}
 		}
+
 		if self.shields >= d {
 			self.shields -= d
 		} else {
@@ -218,10 +264,16 @@ impl ShipData {
 	/// Update this ship's state by `t` seconds
 	pub(crate) fn step(&mut self, t: f32) {
 		match self.state {
-			ShipState::Collapsing {
-				ref mut elapsed, ..
+			ShipState::Landing {
+				ref mut elapsed,
+				total,
+				target,
+				..
 			} => {
 				*elapsed += t;
+				if *elapsed >= total {
+					self.state = ShipState::Landed { target };
+				}
 			}
 
 			ShipState::Landed { .. } => {
@@ -260,6 +312,18 @@ impl ShipData {
 					}
 				}
 			}
+
+			ShipState::Collapsing {
+				ref mut elapsed,
+				total,
+			} => {
+				*elapsed += t;
+				if *elapsed >= total {
+					self.state = ShipState::Dead
+				}
+			}
+
+			ShipState::Dead => {}
 		}
 	}
 }

crates/system/src/phys/controller/point.rs

@@ -3,6 +3,8 @@ use galactica_content::Relationship;
 use rapier2d::{dynamics::RigidBodySet, geometry::ColliderHandle};
 use std::collections::HashMap;
 
+use crate::data::ShipState;
+
 use super::{
 	super::{
 		objects::{PhysSimShip, ShipControls},
@@ -46,7 +48,10 @@ impl ShipControllerStruct for PointShipController {
 			.filter(
 				// Target only flying ships we're hostile towards
 				|s| match my_faction.relationships.get(&s.data.get_faction()).unwrap() {
-					Relationship::Hostile => s.data.get_state().is_flying(),
+					Relationship::Hostile => match s.data.get_state() {
+						ShipState::Flying => true,
+						_ => false,
+					},
 					_ => false,
 				},
 			)

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

@@ -99,7 +99,7 @@ impl PhysSimShip {
 			ShipState::Flying => {
 				return self.step_live(res, rigid_body, collider);
 			}
-			ShipState::Landed { .. } => {}
+			ShipState::Dead | ShipState::Landing { .. } | ShipState::Landed { .. } => {}
 		}
 	}
 

crates/system/src/phys/systemsim.rs

@@ -69,6 +69,14 @@ impl<'a> PhysSim {
 
 	fn land_ship(&mut self, collider: ColliderHandle, target: SystemObjectHandle) {
 		let ship = self.ships.get_mut(&collider).unwrap();
+
+		let r = self.rigid_body_set.get(ship.rigid_body).unwrap();
+		ship.data.land_on(
+			target,
+			util::rigidbody_position(r),
+			-util::rigidbody_rotation(r).angle(Vector2 { x: 0.0, y: 1.0 }),
+		);
+
 		self.rigid_body_set
 			.get_mut(ship.rigid_body)
 			.unwrap()
@@ -77,8 +85,6 @@ impl<'a> PhysSim {
 			.get_mut(ship.collider)
 			.unwrap()
 			.set_enabled(false);
-
-		ship.data.land_on(target);
 	}
 
 	fn unland_ship(&mut self, ct: &Content, collider: ColliderHandle) {
@@ -136,10 +142,14 @@ impl<'a> PhysSim {
 		let f = res.ct.get_faction(projectile.faction);
 		let r = f.relationships.get(&ship.data.get_faction()).unwrap();
 		let destory_projectile = match r {
-			Relationship::Hostile => {
-				ship.data.apply_damage(res.ct, projectile.content.damage);
-				true
-			}
+			Relationship::Hostile => match ship.data.get_state() {
+				ShipState::Flying => {
+					ship.data.apply_damage(res.ct, projectile.content.damage);
+					true
+				}
+				ShipState::Collapsing { .. } => true,
+				_ => false,
+			},
 			_ => false,
 		};
 
@@ -291,15 +301,14 @@ impl PhysSim {
 			// Borrow immutably for now...
 			// (required to compute controls)
 			let ship = self.ships.get(&collider).unwrap();
-			if ship.data.get_state().should_be_removed() {
-				to_remove.push(collider);
-				continue;
-			}
-
 			match ship.data.get_state() {
-				ShipState::Landed { .. } => {}
+				ShipState::Dead => {
+					to_remove.push(collider);
+				}
 
-				ShipState::Collapsing { .. } => {
+				ShipState::Landing { .. }
+				| ShipState::Landed { .. }
+				| ShipState::Collapsing { .. } => {
 					let ship = self.ships.get_mut(&collider).unwrap();
 					ship.step(
 						res,