Fix shape scale issue and extra contacts reported. Also update rigidbodies to use collision groups

Cargo.toml

@@ -10,7 +10,7 @@ publish = false
 crate-type = ["cdylib"]
 
 [features]
-default = ["single-dim2", "serde-serialize"]
+default = ["single-dim3", "serde-serialize"]
 dim2 = []
 dim3 = []
 single = []

README.md

@@ -55,7 +55,8 @@ The reason it was rewritten is to do easier cross platform determinism part and
 - Cross platform determinism.
 - Double builds.
 - Liquids Missing.
-- No support for asymetric collisions (eg. object 1 hitting object 2 but object 2 not hitting object 1).
+- No support for asymetric collisions (eg. object 1 hitting object 2 but object 2 not hitting object 1). More info here [Rapier Collision groups and solver groups](https://rapier.rs/docs/user_guides/rust/colliders/#collision-groups-and-solver-groups). This is the exact check rapier does: `(A.layer & B.mask) != 0 && (B.layer & A.mask) != 0`
+- Friction works differently than it does in Godot. The current formula is: friction is multiplied by other friction, bounce is taken the max value.
 
 # Platforms
 

bin2d/test.tscn

@@ -1,63 +1,54 @@
-[gd_scene load_steps=5 format=3 uid="uid://cn4jscixu2bmf"]
+[gd_scene load_steps=4 format=3 uid="uid://cn4jscixu2bmf"]
 
-[sub_resource type="GDScript" id="GDScript_gph3d"]
-script/source = "extends Node2D
+[sub_resource type="CircleShape2D" id="CircleShape2D_lc8oa"]
 
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_irytb"]
 
-func _ready() -> void:
-	var space := get_viewport().find_world_2d().direct_space_state as RapierDirectSpaceState2D
-	var space_json := FileAccess.open(\"user://space.json\", FileAccess.WRITE)
-	var shapes_json := FileAccess.open(\"user://shapes.json\", FileAccess.WRITE)
-	#space_json.store_string(space.export_json())
-	#shapes_json.store_string(RapierPhysicsServer2D.shapes_export_json())
-"
-
-[sub_resource type="CircleShape2D" id="CircleShape2D_ykjo6"]
-
-[sub_resource type="CircleShape2D" id="CircleShape2D_6y2xx"]
-
-[sub_resource type="GDScript" id="GDScript_swyq8"]
-script/source = "extends ShapeCast2D
-
-
-# Called when the node enters the scene tree for the first time.
-func _ready() -> void:
-	pass # Replace with function body.
-
-
-# Called every frame. 'delta' is the elapsed time since the previous frame.
-func _process(delta: float) -> void:
-	print(get_collision_count())
-	print(get_collision_point(0))
-	print(get_collision_point(1))
-"
+[sub_resource type="WorldBoundaryShape2D" id="WorldBoundaryShape2D_ila5n"]
+normal = Vector2(-0.0425147, -0.999096)
 
 [node name="SceneRayOnSwitch" type="Node2D"]
 
-[node name="Node2D" type="Node2D" parent="."]
-script = SubResource("GDScript_gph3d")
-
-[node name="Node2D2" type="Node2D" parent="."]
-
-[node name="RigidBody2D" type="StaticBody2D" parent="."]
-position = Vector2(133, 63)
-
-[node name="CollisionShape2D" type="CollisionShape2D" parent="RigidBody2D"]
-position = Vector2(65, 27)
-shape = SubResource("CircleShape2D_ykjo6")
-
-[node name="RigidBody2D2" type="StaticBody2D" parent="."]
-position = Vector2(132, 67)
+[node name="RigidBody2D2" type="RigidBody2D" parent="."]
+position = Vector2(-54, -682)
+rotation = -1.51672
+scale = Vector2(4, 2.51)
+mass = 100.0
+max_contacts_reported = 1
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="RigidBody2D2"]
-position = Vector2(65, 27)
-shape = SubResource("CircleShape2D_ykjo6")
-
-[node name="ShapeCast" type="ShapeCast2D" parent="."]
-position = Vector2(123, 62)
-shape = SubResource("CircleShape2D_6y2xx")
-target_position = Vector2(205, 82)
-script = SubResource("GDScript_swyq8")
-
-[node name="Marker2D" type="Marker2D" parent="."]
-position = Vector2(207, 92)
+position = Vector2(-89, 3)
+scale = Vector2(1.89, 1)
+shape = SubResource("CircleShape2D_lc8oa")
+
+[node name="CollisionShape2D2" type="CollisionShape2D" parent="RigidBody2D2"]
+position = Vector2(-88.2483, 25.9664)
+scale = Vector2(1.89, 1)
+shape = SubResource("CircleShape2D_lc8oa")
+
+[node name="CollisionShape2D3" type="CollisionShape2D" parent="RigidBody2D2"]
+position = Vector2(-87.2888, 54.2119)
+scale = Vector2(1.89, 1)
+shape = SubResource("CircleShape2D_lc8oa")
+
+[node name="RigidBody2D3" type="RigidBody2D" parent="."]
+position = Vector2(-80, -513)
+rotation = -1.51672
+scale = Vector2(4, 2.51)
+max_contacts_reported = 1
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="RigidBody2D3"]
+position = Vector2(-89, 3)
+scale = Vector2(1.89, 1)
+shape = SubResource("RectangleShape2D_irytb")
+
+[node name="StaticBody2D" type="StaticBody2D" parent="."]
+position = Vector2(-1, 55)
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="StaticBody2D"]
+position = Vector2(-6, 61)
+rotation = -0.060205
+shape = SubResource("WorldBoundaryShape2D_ila5n")
+
+[node name="Camera2D" type="Camera2D" parent="."]
+zoom = Vector2(2, 2)

src/bodies/rapier_area.rs

@@ -374,26 +374,13 @@ impl RapierArea {
         if let Some(space) = physics_spaces.get_mut(&space_rid) {
             space.area_remove_from_area_update_list(*area_rid);
         }
-        for (detected_body, _) in detected_bodies {
-            let mut area_override_settings = None;
-            if let Some(body) = physics_collision_objects.get(&detected_body) {
-                if let Some(body) = body.get_body() {
-                    area_override_settings = Some(
-                        body.get_area_override_settings(physics_spaces, physics_collision_objects),
-                    );
-                }
-            }
-            if let Some(area_override_settings) = area_override_settings {
-                if let Some(body) = physics_collision_objects.get_mut(&detected_body) {
-                    if let Some(body) = body.get_mut_body() {
-                        body.apply_area_override(
-                            area_override_settings,
-                            physics_engine,
-                            physics_spaces,
-                        );
-                    }
-                }
-            }
+        for (detected_body, _) in &detected_bodies {
+            RapierBody::apply_area_orverride_to_body(
+                detected_body,
+                physics_engine,
+                physics_spaces,
+                physics_collision_objects,
+            );
         }
     }
 
@@ -713,7 +700,7 @@ impl IRapierCollisionObject for RapierArea {
             return;
         }
         self.base.set_space(p_space, physics_engine, physics_spaces);
-        self.recreate_shapes(physics_engine, physics_shapes);
+        self.recreate_shapes(physics_engine, physics_shapes, physics_spaces);
     }
 
     fn add_shape(
@@ -831,7 +818,7 @@ impl IRapierCollisionObject for RapierArea {
         physics_engine: &mut PhysicsEngine,
         physics_shapes: &mut PhysicsShapes,
     ) -> ColliderHandle {
-        if !self.base.is_space_valid() {
+        if !self.base.is_valid() {
             return ColliderHandle::invalid();
         }
         let mat = self.init_material();
@@ -840,15 +827,24 @@ impl IRapierCollisionObject for RapierArea {
     }
 
     fn init_material(&self) -> Material {
-        default_material()
+        Material::new(
+            self.base.get_collision_layer(),
+            self.base.get_collision_mask(),
+        )
     }
 
     fn recreate_shapes(
         &mut self,
         physics_engine: &mut PhysicsEngine,
         physics_shapes: &mut PhysicsShapes,
+        physics_spaces: &mut PhysicsSpaces,
     ) {
-        RapierCollisionObject::recreate_shapes(self, physics_engine, physics_shapes);
+        RapierCollisionObject::recreate_shapes(
+            self,
+            physics_engine,
+            physics_shapes,
+            physics_spaces,
+        );
     }
 
     fn shape_changed(