Added ship collisions

game/controllers/enemy_controller.gd

@@ -1,18 +1,12 @@
 class_name EnemyController
 extends Node
 
-@warning_ignore("unused_signal")
 signal accelerate(direction: Vector2, delta: float)
-
-@warning_ignore("unused_signal")
 signal shoot(weapon_index: int)
-
-
-@warning_ignore("unused_signal")
 signal reload(weapon_index: int)
 
 
-@warning_ignore("unused_parameter")
 func _physics_process(delta: float) -> void:
 	for i in 10:
 		shoot.emit(i)
+	accelerate.emit(Vector2.ZERO, delta)

game/entities/ships/abstract_ship.gd

@@ -29,6 +29,7 @@ signal destroyed
 @export_range(0, 250) var acceleration : int = 0
 @export_range(0, 250) var deceleration : int = 0
 @export_range(0, 250) var max_speed : int = 0
+@export_range(0, 1000) var mass : int = 0
 
 @export var weapon_positions: Array[Vector2]
 
@@ -47,6 +48,18 @@ func _ready() -> void:
 func _physics_process(_delta: float) -> void:
 	var was_collided := move_and_slide()
 	if was_collided:
+		for i in get_slide_collision_count():
+			var collider := get_slide_collision(i).get_collider()
+			if collider is AbstractShip:
+				var other_ship := collider as AbstractShip
+				var momentum := mass * velocity
+				var collider_momentum := other_ship.mass * other_ship.velocity
+				var total_mass := mass + other_ship.mass
+				
+				var new_velocity := (momentum + collider_momentum)/total_mass
+				other_ship.velocity = new_velocity
+				velocity = new_velocity
+		
 		var normal := get_wall_normal()
 		velocity -= normal.abs() * velocity
 

game/entities/ships/enemies/abstract_enemy_ship.tscn

@@ -6,7 +6,7 @@
 
 [node name="AbstractEnemyShip" groups=["enemies"] instance=ExtResource("1_28j6l")]
 collision_layer = 4
-collision_mask = 0
+collision_mask = 2
 script = ExtResource("2_fwvrd")
 
 [node name="EnemyController" parent="." index="4" instance=ExtResource("3_l8c0n")]

game/entities/ships/enemies/heavy/heavy_enemy_ship.tscn

@@ -15,6 +15,7 @@ script = ExtResource("2_3umer")
 acceleration = 30
 deceleration = 18
 max_speed = 60
+mass = 600
 weapon_positions = Array[Vector2]([Vector2(0, 16), Vector2(0, 0), Vector2(0, -16)])
 
 [node name="Sprite2D" parent="." index="0"]

game/entities/ships/enemies/medium/medium_enemy_ship.tscn

@@ -15,6 +15,7 @@ script = ExtResource("2_dgwiy")
 acceleration = 92
 deceleration = 46
 max_speed = 92
+mass = 250
 weapon_positions = Array[Vector2]([Vector2(0, 10), Vector2(0, -10)])
 
 [node name="Sprite2D" parent="." index="0"]

game/entities/ships/enemies/small/small_enemy_ship.tscn

@@ -14,6 +14,7 @@ script = ExtResource("2_bw04d")
 acceleration = 180
 deceleration = 80
 max_speed = 120
+mass = 100
 weapon_positions = Array[Vector2]([Vector2(0, 0)])
 
 [node name="Sprite2D" parent="." index="0"]

game/entities/ships/player/player_ship.tscn

@@ -13,10 +13,12 @@ height = 46.0
 
 [node name="PlayerShip" groups=["players"] instance=ExtResource("1_6otxb")]
 collision_layer = 3
+collision_mask = 5
 script = ExtResource("2_625ti")
 acceleration = 92
 deceleration = 46
 max_speed = 92
+mass = 250
 weapon_positions = Array[Vector2]([Vector2(0, 8), Vector2(0, -8)])
 
 [node name="Sprite2D" parent="." index="0"]