add new model for metis, used also for moonlet, adrastea, amalthea

assets/models/metis.gltf

@@ -0,0 +1,213 @@
+{
+	"asset":{
+		"generator":"Khronos glTF Blender I/O v4.2.60",
+		"version":"2.0"
+	},
+	"scene":0,
+	"scenes":[
+		{
+			"name":"Scene",
+			"nodes":[
+				0,
+				1
+			]
+		}
+	],
+	"nodes":[
+		{
+			"mesh":0,
+			"name":"Sphere"
+		},
+		{
+			"mesh":1,
+			"name":"Collider"
+		}
+	],
+	"materials":[
+		{
+			"doubleSided":true,
+			"name":"Material",
+			"pbrMetallicRoughness":{
+				"baseColorTexture":{
+					"index":0
+				},
+				"metallicFactor":0.871999979019165,
+				"roughnessFactor":0.8320000171661377
+			}
+		}
+	],
+	"meshes":[
+		{
+			"name":"Sphere",
+			"primitives":[
+				{
+					"attributes":{
+						"POSITION":0,
+						"NORMAL":1,
+						"TEXCOORD_0":2
+					},
+					"indices":3,
+					"material":0
+				}
+			]
+		},
+		{
+			"name":"Collider",
+			"primitives":[
+				{
+					"attributes":{
+						"POSITION":4,
+						"NORMAL":5,
+						"TEXCOORD_0":6
+					},
+					"indices":7
+				}
+			]
+		}
+	],
+	"textures":[
+		{
+			"sampler":0,
+			"source":0
+		}
+	],
+	"images":[
+		{
+			"mimeType":"image/jpeg",
+			"name":"mercury",
+			"uri":"../textures/mercury.jpg"
+		}
+	],
+	"accessors":[
+		{
+			"bufferView":0,
+			"componentType":5126,
+			"count":6752,
+			"max":[
+				0.8060516119003296,
+				0.7539172172546387,
+				0.9661670923233032
+			],
+			"min":[
+				-0.7730523347854614,
+				-0.7580877542495728,
+				-1.0261967182159424
+			],
+			"type":"VEC3"
+		},
+		{
+			"bufferView":1,
+			"componentType":5126,
+			"count":6752,
+			"type":"VEC3"
+		},
+		{
+			"bufferView":2,
+			"componentType":5126,
+			"count":6752,
+			"type":"VEC2"
+		},
+		{
+			"bufferView":3,
+			"componentType":5123,
+			"count":38088,
+			"type":"SCALAR"
+		},
+		{
+			"bufferView":4,
+			"componentType":5126,
+			"count":1803,
+			"max":[
+				0.806755006313324,
+				0.7549044489860535,
+				0.9662958979606628
+			],
+			"min":[
+				-0.7718440294265747,
+				-0.7597668766975403,
+				-1.0263147354125977
+			],
+			"type":"VEC3"
+		},
+		{
+			"bufferView":5,
+			"componentType":5126,
+			"count":1803,
+			"type":"VEC3"
+		},
+		{
+			"bufferView":6,
+			"componentType":5126,
+			"count":1803,
+			"type":"VEC2"
+		},
+		{
+			"bufferView":7,
+			"componentType":5123,
+			"count":9522,
+			"type":"SCALAR"
+		}
+	],
+	"bufferViews":[
+		{
+			"buffer":0,
+			"byteLength":81024,
+			"byteOffset":0,
+			"target":34962
+		},
+		{
+			"buffer":0,
+			"byteLength":81024,
+			"byteOffset":81024,
+			"target":34962
+		},
+		{
+			"buffer":0,
+			"byteLength":54016,
+			"byteOffset":162048,
+			"target":34962
+		},
+		{
+			"buffer":0,
+			"byteLength":76176,
+			"byteOffset":216064,
+			"target":34963
+		},
+		{
+			"buffer":0,
+			"byteLength":21636,
+			"byteOffset":292240,
+			"target":34962
+		},
+		{
+			"buffer":0,
+			"byteLength":21636,
+			"byteOffset":313876,
+			"target":34962
+		},
+		{
+			"buffer":0,
+			"byteLength":14424,
+			"byteOffset":335512,
+			"target":34962
+		},
+		{
+			"buffer":0,
+			"byteLength":19044,
+			"byteOffset":349936,
+			"target":34963
+		}
+	],
+	"samplers":[
+		{
+			"magFilter":9729,
+			"minFilter":9987
+		}
+	],
+	"buffers":[
+		{
+			"byteLength":368980,
+			"uri":"metis.bin"
+		}
+	]
+}

src/cmd.rs

@@ -91,6 +91,7 @@ struct ParserState {
     is_moon: bool,
     is_planet: bool,
     is_point_of_interest: bool,
+    is_tidally_locked: bool,
     orbit_distance: Option<f64>,
     orbit_object_id: Option<String>,
     orbit_phase: Option<f64>,
@@ -149,6 +150,7 @@ impl Default for ParserState {
             is_moon: false,
             is_planet: false,
             is_point_of_interest: false,
+            is_tidally_locked: false,
             orbit_distance: None,
             orbit_object_id: None,
             orbit_phase: None,
@@ -456,6 +458,9 @@ pub fn load_defs(mut ew_spawn: EventWriter<SpawnEvent>) {
             ["ring", "yes"] => {
                 state.has_ring = true;
             }
+            ["tidally", "locked"] => {
+                state.is_tidally_locked = true;
+            }
             ["pointofinterest", "yes"] => {
                 state.is_point_of_interest = true;
             }
@@ -834,20 +839,25 @@ fn spawn_entities(
         } else {
             state.pos
         };
-        if let Some(r) = state.orbit_distance {
-            let mass: Option<f64> = if let Some(id) = &state.orbit_object_id {
-                match id.as_str() {
-                    "jupiter" => Some(nature::JUPITER_MASS),
-                    "sol" => Some(nature::JUPITER_MASS),
-                    _ => {
-                        error!("Found no mass for object `{id}`");
-                        continue;
-                    }
+
+        let orbited_mass: Option<f64> = if let Some(id) = &state.orbit_object_id {
+            match id.as_str() {
+                "jupiter" => Some(nature::JUPITER_MASS),
+                "sol" => Some(nature::JUPITER_MASS),
+                _ => {
+                    error!("Found no mass for object `{id}`");
+                    continue;
                 }
-            } else {
-                None
-            };
-            absolute_pos += nature::pos_offset_for_orbiting_body(r, mass, state.orbit_phase);
+            }
+        } else {
+            None
+        };
+
+        if let Some(r) = state.orbit_distance {
+            absolute_pos +=
+                nature::pos_offset_for_orbiting_body(r, orbited_mass, state.orbit_phase);
+        } else if state.is_tidally_locked {
+            error!("Attempted to use 'tidally locked' without specifying orbital distance via 'orbitaround'");
         }
         let scale = Vec3::splat(
             if state.is_sun {
@@ -915,6 +925,16 @@ fn spawn_entities(
             });
             load_asset(model.as_str(), &mut actor, &*asset_server);
         }
+        if state.is_tidally_locked {
+            if let (Some(r), Some(mass)) = (state.orbit_distance, orbited_mass) {
+                rotation = Quat::from_rotation_y(nature::rotation_for_orbiting_body(r, mass) as f32)
+                    * rotation;
+            } else {
+                error!(
+                    "Attempted to use 'tidally locked' without specifying mass via 'orbitaround'"
+                );
+            }
+        }
         actor.insert(Rotation::from(rotation));
 
         // Physics Parameters

src/data/defs.txt

@@ -80,42 +80,45 @@ actor 0 0 0
             only_in_map_at_dist 1e10 jupiter
             clickable no
             physics off
-        actor 0 0 0 moonlet
+        actor 0 0 0 metis
             name Metis
             relativeto jupiter
             id metis
             orbitaround jupiter 128000e3
+            tidally locked
             scale 21.5e3
             moon yes
-            angularmomentum 0 0.025 0
+            angularmomentum 0 0 0
             actor 0 0 0 orbitring
                 relativeto jupiter
                 scale 128000e3
                 only_in_map_at_dist 1e7 metis
                 clickable no
                 physics off
-        actor 0 0 0 moonlet
+        actor 0 0 0 metis
             name Adrastea
             relativeto jupiter
             id adrastea
             orbitaround jupiter 129000e3
+            tidally locked
             scale 8.2e3
             moon yes
-            angularmomentum 0 0.025 0
+            angularmomentum 0 0 0
             actor 0 0 0 orbitring
                 relativeto jupiter
                 scale 129000e3
                 only_in_map_at_dist 1e7 adrastea
                 clickable no
                 physics off
-        actor 0 0 0 moonlet
+        actor 0 0 0 metis
             name Amalthea
             relativeto jupiter
             id amalthea
             orbitaround jupiter 181365.84e3
+            tidally locked
             scale 83.5e3
             moon yes
-            angularmomentum 0 0.025 0
+            angularmomentum 0 0 0
             actor 0 0 0 orbitring
                 relativeto jupiter
                 scale 181365.84e3
@@ -127,10 +130,11 @@ actor 0 0 0
             relativeto jupiter
             id thebe
             orbitaround jupiter 221900e3
+            tidally locked
             scale 50e3
             moon yes
             collider handcrafted
-            angularmomentum 0 0.0 0
+            angularmomentum 0 0 0
             actor 0 0 0 orbitring
                 relativeto jupiter
                 scale 221900e3
@@ -142,8 +146,9 @@ actor 0 0 0
             id io
             relativeto jupiter
             orbitaround jupiter 421700e3
+            tidally locked
             scale 1822e3
-            angularmomentum 0 0.0001 0
+            angularmomentum 0 0 0
             sphere yes
             moon yes
             physics off
@@ -158,8 +163,9 @@ actor 0 0 0
             id europa
             relativeto jupiter
             orbitaround jupiter 670900e3
+            tidally locked
             scale 1561e3
-            angularmomentum 0 0.0001 0
+            angularmomentum 0 0 0
             sphere yes
             moon yes
             physics off
@@ -174,8 +180,9 @@ actor 0 0 0
             id ganymede
             relativeto jupiter
             orbitaround jupiter 1070400e3
+            tidally locked
             scale 2634e3
-            angularmomentum 0 0.0001 0
+            angularmomentum 0 0 0
             sphere yes
             moon yes
             physics off
@@ -190,8 +197,9 @@ actor 0 0 0
             id callisto
             relativeto jupiter
             orbitaround jupiter 1882700e3
+            tidally locked
             scale 2410e3
-            angularmomentum 0 0.0001 0
+            angularmomentum 0 0 0
             sphere yes
             moon yes
             physics off
@@ -320,7 +328,7 @@ actor -55e3 44e3 0 suitv2
     rotationx 180
     wants matchvelocitywith thebe
 
-actor 5000 0 -3000 moonlet
+actor 5000 0 -3000 metis
     name Moonlet
     collider mesh
     relativeto player

src/load.rs

@@ -55,6 +55,7 @@ pub fn asset_name_to_path(name: &str) -> &'static str {
         "marker_satellites" => "models/marker_satellites.glb#Scene0",
         "marker_planets" => "models/marker_planets.glb#Scene0",
         "point_of_interest" => "models/point_of_interest.glb#Scene0",
+        "metis" => "models/metis.gltf#Scene0",
         "thebe" => "models/thebe.gltf#Scene0",
         _ => "models/error.glb#Scene0",
     }

src/nature.rs

@@ -230,3 +230,18 @@ pub fn pos_offset_for_orbiting_body(
     }
     return phase_dist_to_coords(-phase_radians, r);
 }
+
+/// Assumes the "front" (as seen in blender) is pointing at the orbited mass
+pub fn rotation_for_orbiting_body(
+    orbit_distance: f64,
+    mass: f64,
+) -> f64 {
+    if let Ok(epoch) = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH) {
+        let orbital_period = nature::simple_orbital_period(mass, orbit_distance);
+        let now = epoch.as_secs_f64() + ORBIT_TIME_OFFSET;
+        PI * 2.0 * (now % orbital_period) / orbital_period - PI * 0.5
+    } else {
+        eprintln!("WARNING: Can't determine current time in calculate_position_offset_for_orbiting_body().");
+        0.0
+    }
+}