Vehicle Class

The vehicle class makes it easy to apply steering behaviors to game characters. Don’t let the name fool you, this class could be used to move walking characters, space ships, and most things in between.

class Vehicle

{

public:

Vehicle();

void Step();

void SetSteeringForce(Vector2D desiredVec, Vector2D lookVec);

void Collide(Vehicle &other);

Vector2D position; //Current position

Vector2D velocity; //Current velocity

Vector2D lookVec; //Used internally to rotate the vehicle over time

Vector2D forceVec; //Used internally, acceleration vector

float friction; //Resistance to movement

float wanderDir; //A stored value needed for the wander behavior

float direction; //Current direction in degrees

float maxAcceleration; //Pixels per second^2

float maxVelocity; //Pixels per second

float maxRotation; //Degrees per second

float radius; //For collision detection

static Core* G; //Set this pointer before using

};

The vehicle accelerates and moves realistically although the concept of mass and torque have been left out to make the class simple. The “Collide” function only prevents intersection based on the radius of the colliding objects, it does not alter their velocity.

Vehicle.zip 2kb