Implemented removal of cars if the node they're on gets removed

src/vehicles/car.odin

@@ -14,18 +14,13 @@ Car :: struct {
 	
 	// Pathfinding
 	
-	// Car's origin node
-	origin: u32,
+	// Car's current node/road
+	pos: common.Car_Position,
 	// Car's destination node
 	destination: Maybe(u32),
-	// Tracks on which node car has been last
-	// 
-	// if null car is not on node
-	node_pos: Maybe(u32), 
-	// if null car is not on road
-	road_pos: Maybe(u32),
-	// tracks absolute pos
-	actual_pos: rl.Vector2,
+	
+	// tracks absolute pos (within canvas)
+	absolute_pos: rl.Vector2,
 }
 
 // Constructor
@@ -33,9 +28,11 @@ car_init :: proc(spawn_node: u32, nodes: []inf.Node) -> Car {
 	return {
 		fuel_level = common.FUEL_MAX,
 		max_speed = common.CAR_MAX_SPEED,
-		origin = spawn_node,
-		node_pos = spawn_node,
-		actual_pos = nodes[spawn_node].pos
+		pos = common.Car_Position {
+			type = .Node,
+			ref = spawn_node,
+		},
+		absolute_pos = nodes[spawn_node].pos
 	}
 }
 
@@ -43,11 +40,11 @@ car_init :: proc(spawn_node: u32, nodes: []inf.Node) -> Car {
 // 
 // Does NOT guarantee the route is reachable (TODO!)
 car_set_route :: proc(self: ^Car, nodes_len: u32) {
-	for self.origin == self.destination do self.destination = rand.uint32_max(nodes_len)
+	for self.pos.type == .Node && self.pos.ref == self.destination do self.destination = rand.uint32_max(nodes_len)
 }
 
 // Updates (origin and destination) node reference
 car_update_node_reference :: proc(self: ^Car, old_ref: u32, new_ref: u32) {
-	if self.origin == old_ref do self.origin = new_ref
+	if self.pos.type == .Node && self.pos.ref == old_ref do self.pos.ref = new_ref
 	if self.destination == old_ref do self.destination = new_ref
 }