Added basic unlanding animation

crates/galactica/src/main.rs

@@ -97,6 +97,11 @@ fn main() -> Result<()> {
 										None
 									}
 								}
+								ShipState::UnLanding { .. } => {
+									let pos =
+										o.data.get_state().unlanding_position(&content).unwrap();
+									Some(Point2 { x: pos.x, y: pos.y })
+								}
 								ShipState::Landing { .. } => {
 									let pos =
 										o.data.get_state().landing_position(&content).unwrap();

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, Point3, Vector2};
+use cgmath::{EuclideanSpace, InnerSpace, Point2, Point3, Rad, Vector2};
 use galactica_system::{data::ShipState, phys::util};
 use galactica_util::constants::OBJECT_SPRITE_INSTANCE_LIMIT;
 
@@ -60,6 +60,14 @@ impl GPUState {
 					ship_ang = from_angle + ((target_angle - from_angle) * 1f32.min(elapsed / 1.0));
 					ship_cnt = state.ct.get_ship(ship.data.get_content());
 				}
+
+				ShipState::UnLanding {
+					to_angle, elapsed, ..
+				} => {
+					ship_pos = ship.data.get_state().unlanding_position(state.ct).unwrap();
+					ship_ang = Rad(0.0) + ((to_angle - Rad(0.0)) * 1f32.min(elapsed / 1.0));
+					ship_cnt = state.ct.get_ship(ship.data.get_content());
+				}
 			}
 
 			// Position adjusted for parallax

crates/render/src/ui/radar.rs

@@ -41,7 +41,6 @@ impl Radar {
 		match player_ship.data.get_state() {
 			ShipState::Dead => {}
 
-			// TODO: radar follows while landing
 			ShipState::Landing { .. } => {
 				let pos = player_ship
 					.data
@@ -51,6 +50,15 @@ impl Radar {
 				self.last_player_position = Point2 { x: pos.x, y: pos.y }
 			}
 
+			ShipState::UnLanding { .. } => {
+				let pos = player_ship
+					.data
+					.get_state()
+					.unlanding_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 {
@@ -150,7 +158,9 @@ impl Radar {
 				}
 
 				// TODO: different color for landing?
-				ShipState::Landing { .. } | ShipState::Collapsing { .. } => {
+				ShipState::UnLanding { .. }
+				| ShipState::Landing { .. }
+				| ShipState::Collapsing { .. } => {
 					// TODO: configurable
 					[0.2, 0.2, 0.2, 1.0]
 				}

crates/render/src/ui/status.rs

@@ -43,7 +43,8 @@ impl Status {
 				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::UnLanding { .. }
+			| ShipState::Landing { .. }
 			| ShipState::Landed { .. }
 			| ShipState::Collapsing { .. }
 			| ShipState::Flying => {

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

@@ -47,7 +47,26 @@ pub enum ShipState {
 		/// 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
+		/// The amount of time we've already spent playing this landing sequence
+		elapsed: f32,
+	},
+
+	/// This ship is taking off from a planet
+	/// (playing the animation)
+	UnLanding {
+		/// The point, in world coordinates, to which we're going
+		to_position: Point2<f32>,
+
+		/// The angle we'll be at when we arrive
+		to_angle: Rad<f32>,
+
+		/// The planet we're taking off from
+		from: SystemObjectHandle,
+
+		/// The total amount of time, in seconds, we will spend taking off
+		total: f32,
+
+		/// The amount of time we've already spent playing this unlanding sequence
 		elapsed: f32,
 	},
 }
@@ -96,6 +115,8 @@ impl ShipState {
 				// TODO: atmosphere burn
 				// TODO: land at random point
 				// TODO: don't jump camera
+				// TODO: time by distance
+				// TODO: keep momentum
 
 				let pos = from_position + (diff * (elapsed / total));
 
@@ -108,6 +129,48 @@ impl ShipState {
 			_ => None,
 		}
 	}
+
+	/// Compute position of this ship's sprite during its unlanding sequence
+	pub fn unlanding_position(&self, ct: &Content) -> Option<Point3<f32>> {
+		match self {
+			Self::UnLanding {
+				to_position,
+				from,
+				total,
+				elapsed,
+				..
+			} => Some({
+				let from = ct.get_system_object(*from);
+
+				let diff = to_position
+					- Point2 {
+						x: from.pos.x,
+						y: from.pos.y,
+					};
+				//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
+				// TODO: time by distance
+				// TODO: keep momentum
+
+				let pos = Point2 {
+					x: from.pos.x,
+					y: from.pos.y,
+				} + (diff * (elapsed / total));
+
+				Point3 {
+					x: pos.x,
+					y: pos.y,
+					z: from.pos.z + ((1.0 - from.pos.z) * (elapsed / total)),
+				}
+			}),
+			_ => None,
+		}
+	}
 }
 
 /// Represents all attributes of a single ship
@@ -189,10 +252,16 @@ impl ShipData {
 	}
 
 	/// Take off from `target`
-	pub fn unland(&mut self) {
+	pub fn unland(&mut self, to_position: Point2<f32>) {
 		match self.state {
-			ShipState::Landed { .. } => {
-				self.state = ShipState::Flying;
+			ShipState::Landed { target } => {
+				self.state = ShipState::UnLanding {
+					to_position,
+					to_angle: Rad(1.0),
+					from: target,
+					total: 5.0,
+					elapsed: 0.0,
+				};
 			}
 			_ => {
 				unreachable!("Called `unland` on a ship that isn't landed!")
@@ -276,6 +345,17 @@ impl ShipData {
 				}
 			}
 
+			ShipState::UnLanding {
+				ref mut elapsed,
+				total,
+				..
+			} => {
+				*elapsed += t;
+				if *elapsed >= total {
+					self.state = ShipState::Flying;
+				}
+			}
+
 			ShipState::Landed { .. } => {
 				// Cooldown guns
 				for (_, c) in &mut self.gun_cooldowns {

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

@@ -99,7 +99,10 @@ impl PhysSimShip {
 			ShipState::Flying => {
 				return self.step_live(res, rigid_body, collider);
 			}
-			ShipState::Dead | ShipState::Landing { .. } | ShipState::Landed { .. } => {}
+			ShipState::UnLanding { .. }
+			| ShipState::Dead
+			| ShipState::Landing { .. }
+			| ShipState::Landed { .. } => {}
 		}
 	}
 

crates/system/src/phys/systemsim.rs

@@ -77,10 +77,11 @@ impl<'a> PhysSim {
 			-util::rigidbody_rotation(r).angle(Vector2 { x: 0.0, y: 1.0 }),
 		);
 
-		self.rigid_body_set
-			.get_mut(ship.rigid_body)
-			.unwrap()
-			.set_enabled(false);
+		let r = self.rigid_body_set.get_mut(ship.rigid_body).unwrap();
+		r.set_enabled(false);
+		r.set_angvel(0.0, false);
+		r.set_linvel(nalgebra::Vector2::new(0.0, 0.0), false);
+
 		self.collider_set
 			.get_mut(ship.collider)
 			.unwrap()
@@ -91,16 +92,24 @@ impl<'a> PhysSim {
 		let ship = self.ships.get_mut(&collider).unwrap();
 		let obj = ship.data.get_state().landed_on().unwrap();
 		let obj = ct.get_system_object(obj);
-		ship.data.unland();
 
-		self.rigid_body_set
-			.get_mut(ship.rigid_body)
-			.unwrap()
-			.set_position(point![obj.pos.x, obj.pos.y].into(), true);
-		self.rigid_body_set
-			.get_mut(ship.rigid_body)
-			.unwrap()
-			.set_enabled(true);
+		let target_pos = Point2 {
+			x: obj.pos.x + 100.0,
+			y: obj.pos.y + 100.0,
+		};
+
+		ship.data.unland(target_pos);
+
+		let r = self.rigid_body_set.get_mut(ship.rigid_body).unwrap();
+		r.set_enabled(true);
+
+		r.set_position(
+			nalgebra::Vector2::new(target_pos.x, target_pos.y).into(),
+			true,
+		);
+
+		r.set_rotation(nalgebra::Rotation2::new(1.0).into(), false);
+
 		self.collider_set
 			.get_mut(ship.collider)
 			.unwrap()
@@ -306,7 +315,8 @@ impl PhysSim {
 					to_remove.push(collider);
 				}
 
-				ShipState::Landing { .. }
+				ShipState::UnLanding { .. }
+				| ShipState::Landing { .. }
 				| ShipState::Landed { .. }
 				| ShipState::Collapsing { .. } => {
 					let ship = self.ships.get_mut(&collider).unwrap();