Spielmechanik-Ingenieur: Space Drifting Controller

public class SpaceDriftController : MonoBehaviour { [Header("Ship Physics")] public float thrustForce = 20f; public float maxSpeed = 50f; public float dragCoefficient = 0.1f; // Linear drag for space vacuum approximation public float mass = 1f; private Vector3 shipVelocity = Vector3.zero; void FixedUpdate() { // Newton's 2nd law: F = m*a => a = F/m Vector3 inputForce = new Vector3(Input.GetAxis("Horizontal"), Input.GetAxis("Vertical"), 0) * thrustForce; Vector3 acceleration = inputForce / mass; // Integrate velocity (semi-implicit Euler for stability) shipVelocity += acceleration * Time.fixedDeltaTime; // Apply linear drag (F_drag = -b * v) shipVelocity *= (1f - dragCoefficient * Time.fixedDeltaTime); // Clamp to max speed (magnitude preserving direction) if (shipVelocity.magnitude > maxSpeed) shipVelocity = shipVelocity.normalized * maxSpeed; // Update position transform.position += shipVelocity * Time.fixedDeltaTime; } // Expose velocity for weapon system (vector addition) public Vector3 GetShipVelocity() => shipVelocity; } public class ProjectileLauncher : MonoBehaviour { [Header("Projectile Settings")] public GameObject projectilePrefab; public float projectileSpeed = 100f; // Base muzzle velocity (relative to ship) public float fireCooldown = 0.1f; public LayerMask collisionMask; private float lastFireTime; private SpaceDriftController shipController; void Start() { shipController = GetComponentInParent (); } void Update() { if (Input.GetButton("Fire1") && Time.time >= lastFireTime + fireCooldown) { FireProjectile(); lastFireTime = Time.time; } } void FireProjectile() { // Vector velocity addition: projectile_velocity = ship_velocity + muzzle_velocity Vector3 shipVel = shipController.GetShipVelocity(); Vector3 muzzleVel = transform.up * projectileSpeed; // Local forward (up in 2D top-down) Vector3 finalVel = shipVel + muzzleVel; // Spawn projectile GameObject proj = Instantiate(projectilePrefab, transform.position, transform.rotation); Projectile projScript = proj.GetComponent (); projScript.Initialize(finalVel, collisionMask); } } public class Projectile : MonoBehaviour { private Vector3 velocity; private LayerMask collisionMask; private float lifeTime = 5f; public void Initialize(Vector3 initialVelocity, LayerMask mask) { velocity = initialVelocity; collisionMask = mask; Destroy(gameObject, lifeTime); } void FixedUpdate() { // High-frequency collision polling: use continuous collision detection (CCD) or manual raycast Vector3 deltaMove = velocity * Time.fixedDeltaTime; RaycastHit2D hit = Physics2D.Raycast(transform.position, deltaMove.normalized, deltaMove.magnitude, collisionMask); if (hit.collider != null) { // Impact - destroy projectile (or apply damage) Destroy(gameObject); return; } // Move projectile (no external forces - Newton's 1st law) transform.position += deltaMove; } } // Mathematical derivation for projectile interception (target prediction) public static class InterceptionMath { public static Vector3 CalculateInterceptPoint(Vector3 shooterPos, Vector3 shooterVel, float projectileSpeed, Vector3 targetPos, Vector3 targetVel) { // Solve for time t where |shooterPos + shooterVel*t + projectileDir*projectileSpeed*t - (targetPos + targetVel*t)| = 0 // Let d = targetPos - shooterPos, v = targetVel - shooterVel Vector3 d = targetPos - shooterPos; Vector3 v = targetVel - shooterVel; // Quadratic: |v|^2 * t^2 + 2*(d·v)*t + (|d|^2 - projectileSpeed^2 * t^2) = 0 // Simplify: (|v|^2 - projectileSpeed^2) * t^2 + 2*(d·v)*t + |d|^2 = 0 float a = Vector3.Dot(v, v) - projectileSpeed * projectileSpeed; float b = 2f * Vector3.Dot(d, v); float c = Vector3.Dot(d, d); float discriminant = b * b - 4f * a * c; if (discriminant < 0f) return Vector3.zero; // No solution - target cannot be hit float sqrtDisc = Mathf.Sqrt(discriminant); float t1 = (-b + sqrtDisc) / (2f * a); float t2 = (-b - sqrtDisc) / (2f * a); // Choose smallest positive time float t = Mathf.Min(t1, t2); if (t < 0f) t = Mathf.Max(t1, t2); if (t < 0f) return Vector3.zero; // Only negative times - target moving away // Intercept point = target position at time t return targetPos + targetVel * t; } }

Spielmechanik-Ingenieur: Space Drifting Controller

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