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Clearing Space Project
Clearing Space was a game concept that I developed in my spare time. I used Unity's engine and editor to create the game which uses C# as it's programming language.
In Clearing Space the player controls a ship that flys around the Earth breaking down and collecting debris. The debris can be refined or sold back to Earth with the use of a Space Elevator.
Camera Pointer
I needed a way to point a small arrow towards the space station to help guide the player back. The solution was to calculate multiple points that are joined together using the LineRenderer component. Because the radius at which the ship flys is constant, it was easy to make an accurate calculation, the result was smoothed out for further accuracy.
1 using System.Collections;
2 using System.Collections.Generic;
3 using UnityEngine;
4
5 public class PlayerToStationPointer : MonoBehaviour
6 {
7
8 //Inspector References
9 private GameObject _spaceStation;
10 private GameObject _spaceShip;
11
12 [SerializeField] private float radius = 250.0f;
13 [SerializeField] private Transform arrowPrefab;
14
15 private LineRenderer _lineRenderer;
16 [SerializeField] private int _linePositionCount = 50;
17 private Transform arrowInstance;
18
19
20 void Start()
21 {
22 //Set Shorter References
23 _spaceStation = GameObject.FindGameObjectWithTag("SpaceStation");
24 _spaceShip = GameObject.FindGameObjectWithTag("Ship");
25
26 _lineRenderer = GetComponent();
27 _lineRenderer.positionCount = _linePositionCount;
28
29 // Creates an instance of the arrow prefab
30 arrowInstance = Instantiate(arrowPrefab, _spaceStation.transform.position, Quaternion.identity);
31 }
32
33 void Update()
34 {
35
36 // for loop iterate over points in a QuadraticCurve, the number of points is definied in the editor or above.
37 for (int i = 0; i < _lineRenderer.positionCount; i++)
38 {
39 float t = (float)i / (float)(_lineRenderer.positionCount - 1);
40 Vector3 pos = GetQuadraticCurvePoint(_spaceShip.transform.position, Vector3.zero, _spaceStation.transform.position, t);
41 pos = pos.normalized * radius;
42
43 //creates a smooth curve from the player to the spacestation
44 _lineRenderer.SetPosition(i, pos);
45 }
46
47 // points the arrow towards the spacestation using the position and rotation of the lineRenderer
48 arrowInstance.position = _spaceShip.transform.position;
49 arrowInstance.rotation = Quaternion.LookRotation(_lineRenderer.GetPosition(1) - arrowInstance.position);
50 }
1 using System.Collections;
2 using System.Collections.Generic;
3 using UnityEngine;
4 using UnityEngine.UI;
5
6 public class DistanceToStation : MonoBehaviour
7 {
8
9 //Inspector References
10 private GlobalReferences _globalReferences;
11 private GlobalSettings _globalSettings;
12
13 private float _distance;
14 public float zSpeed = 1.0f;
15
16 [SerializeField] private Camera mainCamera;
17 [SerializeField] private Button _stationButton;
18
19 private void Start()
20 {
21 //Set Shorter References
22 _globalReferences = GlobalReferences.Singleton;
23 _globalSettings = GlobalSettings.Singleton;
24 }
25
26 private void Update()
27 {
28
29 // Getting the distance between the player position and the Spacestation Position
30 _distance = Vector3.Distance(transform.position, _globalReferences.SpaceStation.transform.position);
31
32 //Check to see if the distance is smaller or equal to the TriggerDistance
33 if (_distance <= _globalSettings.StationTriggerDistance)
34 {
35 //Change the camera's position to "Zoom out" when in range of the station
36 float targetZ = Mathf.Lerp(mainCamera.transform.localPosition.z, -100, zSpeed * Time.deltaTime);
37 mainCamera.transform.localPosition = new Vector3(mainCamera.transform.localPosition.x, mainCamera.transform. localPosition.y, targetZ);
38 //Allow the player to interact with the station
39 _stationButton.interactable = true;
40 //Transfer all cargo to the station
41 TransferPlayerCargo(_globalReferences.PlayerCargo.GetCargoAmount);
42 }
43 else
44 {
45 //Else do the opposite of above
46 _stationButton.interactable = false;
47 float targetZ = Mathf.Lerp(mainCamera.transform.localPosition.z, -45, zSpeed * Time.deltaTime);
48 mainCamera.transform.localPosition = new Vector3(mainCamera.transform.localPosition.x, mainCamera.transform.localPosition.y, targetZ);
49 }
50 }
Distance To Station
Using a simple compairson function I could find out the distance between the space station and the player. Then with an if statement would check whether the distance was smaller than 100 units, if the result came back true I could then animate the camera to zoom in and out using a lerp function to smooth the transition.Cargo Teleport
This script checks for cargo amounts in the ship and the space station, compares them to see if the current junk is less than the max and adds the junk to the station inventory. The AddCargo function is called in the script above when the player is close enough to the station.
1 using System.Collections;
2 using System.Collections.Generic;
3 using UnityEngine;
4 using TMPro;
5
6 public class Cargo : MonoBehaviour
7 {
8 //audio source
9 public AudioSource _audioSource;
10
11 private GlobalSettings _globalSettings; //Global settings
12 private UIManager _uiManager;
13 private int _cargoAmount = 100;
14
15 private void Start()
16 {
17 //Set Shorter References
18 _globalSettings = GlobalSettings.Singleton;
19 _uiManager = UIManager.Singleton;
20
21 //Set Inital UI Text
22 _uiManager.PlayerCargoText = _cargoAmount;
23 _uiManager.PlayerMaxCargoText = _globalSettings.PlayerMaxCargo;
24
25 //Get audio Component
26 _audioSource = GetComponent();
27 if (_audioSource == null) { Debug.LogError("No Audio Source Detected [Cargo]"); }
28 }
29
30 public int GetCargoAmount
31 {
32 get { return _cargoAmount; }
33 }
34
35 //Add more than one junk
36 public bool AddCargo(int j)
37 {
38 //If zero or less, action has failed. adding 0 junk or negative junk will do nothing
39 if (j <= 0) { return false; }
40
41 //If current junk and added junk is less than the max
42 if (_cargoAmount + j <= _globalSettings.PlayerMaxCargo)
43 {
44 //Add Junk
45 _cargoAmount += j;
46
47 //Set UI Cargo Value
48 _uiManager.PlayerCargoText = _cargoAmount;
49
50 //Great success!
51 return true;
52 }
53 return false;
54 }
55
56
57 //Remove more than one junk | has issues! need confirmation that junk has been removed
58 public bool RemoveCargo(int j)
59 {
60 //If zero or less, action has failed. removing 0 junk or negative junk will do nothing
61 if (j <= 0) { return false; }
62
63 //Do we have the junk we are trying to remove
64 if (_cargoAmount >= j)
65 {
66 //Remove all junk
67 _cargoAmount -= j;
68
69 //Set UI Cargo Value
70 _uiManager.PlayerCargoText = _cargoAmount;
71
72 //Great success!
73 return true;
74 }
75 return false;
76 }
77 }