lab5

Assets/Code/Lab5/ProjectileLauncher.cs

@@ -0,0 +1,158 @@
+using UnityEngine;
+
+namespace Code.Lab5
+{
+    public class ProjectileLauncher : MonoBehaviour
+    {
+        public GameObject projectilePrefab;
+        public Transform target;
+        public float launchSpeed = 20f;
+        public bool useHighTrajectory;
+        
+        public float randomRadius = 10f;
+        public Vector2 centerOffset = Vector2.zero;
+        public GameObject targetCirclePrefab;
+        public bool showTargetCircle = true;
+        public float circleLifetime = 2f;
+
+        private void Start()
+        {
+            if (target == null)
+            {
+                CreateNewRandomTarget();
+            }
+        }
+
+        private void Update()
+        {
+            if (Input.GetKeyDown(KeyCode.Space))
+            {
+                LaunchProjectile();
+            }
+            
+            if (Input.GetKeyDown(KeyCode.R))
+            {
+                CreateNewRandomTarget();
+            }
+        }
+
+        private void CreateNewRandomTarget()
+        {
+            var center = new Vector3(
+                transform.position.x + centerOffset.x,
+                0.1f,
+                transform.position.z + centerOffset.y
+            );
+            
+            var randomCircle = Random.insideUnitCircle * randomRadius;
+            
+            var randomPosition = new Vector3(
+                center.x + randomCircle.x,
+                0.1f,
+                center.z + randomCircle.y
+            );
+            
+            if (target)
+            {
+                target.position = randomPosition;
+            }
+            else
+            {
+                var newTarget = new GameObject("RandomTarget")
+                {
+                    transform =
+                    {
+                        position = randomPosition
+                    }
+                };
+                target = newTarget.transform;
+            }
+            
+            if (showTargetCircle && targetCirclePrefab)
+            {
+                SpawnTargetCircle(randomPosition);
+            }
+        }
+
+        private void SpawnTargetCircle(Vector3 position)
+        {
+            var circle = Instantiate(targetCirclePrefab, position, Quaternion.identity);
+            var circlePos = circle.transform.position;
+            circlePos.y = 0.05f;
+            circle.transform.position = circlePos;
+            
+            if (circleLifetime > 0)
+            {
+                Destroy(circle, circleLifetime);
+            }
+        }
+
+        private void LaunchProjectile()
+        {
+            if (!target) return;
+
+            var direction = Projectile.GetFireDirection(
+                transform.position, 
+                target.position, 
+                launchSpeed, 
+                useHighTrajectory
+            );
+
+            if (direction == Vector3.zero) return;
+            
+            var projObj = Instantiate(projectilePrefab, transform.position, Quaternion.identity);
+            var projectile = projObj.GetComponent<Projectile>();
+            projectile.Set(transform.position, direction, launchSpeed);
+                
+            CreateNewRandomTarget();
+        }
+
+        public void SetTargetAtPosition(Vector3 position)
+        {
+            var targetPos = position;
+            targetPos.y = 0.1f;
+            
+            if (target != null)
+            {
+                target.position = targetPos;
+            }
+            else
+            {
+                var newTarget = new GameObject("ManualTarget")
+                {
+                    transform =
+                    {
+                        position = targetPos
+                    }
+                };
+                target = newTarget.transform;
+            }
+            
+            if (showTargetCircle && targetCirclePrefab != null)
+            {
+                SpawnTargetCircle(targetPos);
+            }
+        }
+
+        private void OnDrawGizmosSelected()
+        {
+            Gizmos.color = new Color(1f, 0f, 0f, 0.2f);
+            var center = new Vector3(
+                transform.position.x + centerOffset.x,
+                0.1f,
+                transform.position.z + centerOffset.y
+            );
+            Gizmos.DrawWireSphere(center, randomRadius);
+            
+            if (target != null)
+            {
+                var reachable = Projectile.IsTargetReachable(transform.position, target.position, launchSpeed);
+                Gizmos.color = reachable ? Color.green : Color.red;
+                Gizmos.DrawLine(transform.position, target.position);
+                
+                Gizmos.color = Color.yellow;
+                Gizmos.DrawSphere(target.position, 0.2f);
+            }
+        }
+    }
+}