Setting up groundwork for vehicle (car) and pathfinding implementation

src/vehicles/car.odin

@@ -0,0 +1,44 @@
+package vehicles
+
+import "core:math/rand"
+
+import "../common"
+
+Car :: struct {
+	// Fuel level 0-100%
+	fuel_level: u8,
+	// Vehicle's maximum speed
+	max_speed: u8,
+	
+	// Pathfinding
+	
+	// Car's origin node
+	origin: u32,
+	// Car's destination node
+	destination: Maybe(u32),
+}
+
+// Constructor
+car_init :: proc(nodes_len: u32) -> Car {
+	return {
+		fuel_level = common.FUEL_MAX,
+		max_speed = common.CAR_MAX_SPEED,
+		origin = rand.uint32_max(nodes_len)
+	}
+}
+
+// Sets a (valid) route for the car
+// 
+// Does NOT guarantee the route is reachable (TODO?)
+car_set_route :: proc(self: ^Car, nodes_len: u32) {
+	for self.origin == self.destination {
+		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.destination == old_ref do self.destination = new_ref
+}