Help needed on 2D actor rotation upon touch input

Hello -

First post in Unity Forum. Firstly, allow myself to introduce... myself. I have built a number of games in another game engine, GameSalad. I decided it was time to jump to another language, and thought it was best to come to Unity.

While looking at tutorials, I thought it would be good to also port one of my existing games to Unity. The game I chose is inspired by the arcade classic Asteroids, so you should have a sense of the objective and gameplay.

I have four buttons - left, right, thrust, fire. The keyboard input works just fine - the ship rorates, thruts forward or fires accordingly. However, I am stuck on touch input, and have not yet found the right thread, blog or youtube video yet. Specifically, when I press on the left button, the ship should rotate left (counterclockwise). But as I currently stand, if you press the left button, the ship does not constantly rotate, but just by x degrees, thus I would need to tap left again.

I have a button script and a player control script:

• The button script sets Button01 to true if the button is pressed.
• The player control script invokes the transform.Rotate behavior.

Both are enclosed within "void Update" in their own scripts to update once per frame.

Any ideas as to what may impede the constant rotation?

Thanks, regards,
Marcos

 

Would be helpfull if you would post your code , but I am guessing you are not not multiplying your value with Time.deltaTime

Code (CSharp):

1. // V1
2.     public delegate bool ShouldRotate();
3.     public ShouldRotate OnRotateLeft;
4.  
5.     //V2
6.     public delegate float GetRotationInput();
7.     public GetRotationInput OnGetRotation ;
8.  
9.     public Vector3 dir;
10.     public float speed;
11.  
12.     public void Update()
13.     {
14.         //Version 1
15.         if (OnRotateLeft ())
16.             transform.eulerAngles += speed * dir * Time.deltaTime;
17.  
18.         //Version 2
19.         transform.eulerAngles += OnGetRotation() * speed * dir * Time.deltaTime;
20.     }

a example would be like this

 

Yes, I should have posted the code. This is the existing code.

In the Player Ship Control I have the following:

Code (CSharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4.  
5. public class PlayerShipControl : MonoBehaviour {
6.  
7. [INDENT]private Rigidbody2D rb;[/INDENT]
8.  
9.     // Use this for initialization
10.     void Start () {
11.         rb = GetComponent<Rigidbody2D> ();
12.     }
13.    
14.     // Update is called once per frame
15.     void Update () {
16.         if (TouchJoyPad.Button01) {
17.             transform.Rotate (0, 0, 20);
18.         }
19.     }
20. }
21.  

In the Button Script I have the following:

Code (CSharp):

1.  
2. using UnityEngine;
3. using UnityEngine.UI;
4. using System.Collections;
5.  
6. public class TouchJoyPad : MonoBehaviour {
7.  
8.     //Variables that can be referenced from outside
9.     static public bool
10.     Button01, Button01Down, Button01Up, Button02, Button02Down, Button02Up,     Button03, Button03Down, Button03Up, Button04, Button04Down, Button04Up;
11.  
12.     //Variable for internal processing
13.     bool PreButton01, PreButton02, PreButton03, PreButton04;
14.     Vector2[] convertedTouchPos;
15.     Vector2 JoyKeyPos2D, DragArea2D, Button01Pos2D, Button02Pos2D, Button03Pos2D, Button04Pos2D;
16.     RectTransform rectJoyKey, rectDragArea, rectButton01, rectButton02, rectButton03, rectButton04;
17.  
18.     // Use this for initialization
19.     void Start () {
20.         //Detect the rect of Joykey and buttons
21.         rectButton01 = GameObject.Find ("Image_Button01").GetComponent<RectTransform> ();
22.         rectButton02 = GameObject.Find ("Image_Button02").GetComponent<RectTransform> ();
23.         rectButton03 = GameObject.Find ("Image_Button03").GetComponent<RectTransform> ();
24.         rectButton04 = GameObject.Find ("Image_Button04").GetComponent<RectTransform> ();
25.  
26.         Button01Pos2D = new Vector2 (rectButton01.position.x, rectButton01.position.y);
27.         Button02Pos2D = new Vector2 (rectButton02.position.x, rectButton02.position.y);
28.         Button03Pos2D = new Vector2 (rectButton03.position.x, rectButton03.position.y);
29.         Button04Pos2D = new Vector2 (rectButton04.position.x, rectButton04.position.y);
30.  
31.         ScreenWidth = Screen.width;
32.  
33.         //Boolean value initialization for the state detection
34.         Button01 = false;
35.         Button02 = false;
36.         Button03 = false;
37.         Button04 = false;
38.     }
39.    
40.     // Update is called once per frame
41.     void Update () {
42.  
43.         if (ScreenWidth != Screen.width) {
44.             Button01Pos2D = new Vector2 (rectButton01.position.x, rectButton01.position.y);
45.             Button02Pos2D = new Vector2 (rectButton02.position.x, rectButton02.position.y);
46.             Button03Pos2D = new Vector2 (rectButton03.position.x, rectButton03.position.y);
47.             Button04Pos2D = new Vector2 (rectButton04.position.x, rectButton04.position.y);
48.  
49.             ScreenWidth = Screen.width;
50.         }
51.  
52.         //Boolean value initialization for the state detection
53.         Button01 = false;
54.         Button02 = false;
55.         Button03 = false;
56.         Button04 = false;
57.  
58. //        Detect touches
59.         if (Input.touchCount > 0) {
60.             convertedTouchPos = new Vector2[Input.touchCount];
61.             for (int i = 0; i < Input.touchCount; i++) {
62.                 convertedTouchPos [i] = Input.GetTouch (i).position;
63.  
64. //            Processing of the Button01
65.                     Button01 = true;
66.                 } else if (convertedTouchPos[i].x > Button02Pos2D.x - rectButton02.rect.width * 0.50f
67.                     && convertedTouchPos[i].x < Button02Pos2D.x + rectButton02.rect.width * 0.50f
68.                     && convertedTouchPos[i].y > Button02Pos2D.y - rectButton02.rect.height * 0.50f
69.                     && convertedTouchPos[i].y < Button02Pos2D.y + rectButton02.rect.height * 0.50f) {
70. //            Processing of the Button02
71.                     Button02 = true;
72.                 } else if (convertedTouchPos[i].x > Button03Pos2D.x - rectButton03.rect.width * 0.50f
73.                     && convertedTouchPos[i].x < Button03Pos2D.x + rectButton03.rect.width * 0.50f
74.                     && convertedTouchPos[i].y > Button03Pos2D.y - rectButton03.rect.height * 0.50f
75.                     && convertedTouchPos[i].y < Button03Pos2D.y + rectButton03.rect.height * 0.50f) {
76. //            Processing of the Button03
77.                     Button03 = true;
78.                 } else if (convertedTouchPos[i].x > Button04Pos2D.x - rectButton04.rect.width * 0.5f
79.                     && convertedTouchPos[i].x < Button04Pos2D.x + rectButton04.rect.width * 0.5f
80.                     && convertedTouchPos[i].y > Button04Pos2D.y - rectButton04.rect.height * 0.5f
81.                     && convertedTouchPos[i].y < Button04Pos2D.y + rectButton04.rect.height * 0.5f) {
82. //            Processing of the Button04
83.                     Button04 = true;
84.                 } else if (convertedTouchPos[i].x > DragArea2D.x - rectDragArea.rect.width * 0.5f
85.                     && convertedTouchPos[i].x < DragArea2D.x + rectDragArea.rect.width * 0.5f
86.                     && convertedTouchPos[i].y > DragArea2D.y - rectDragArea.rect.height * 0.5f
87.                     && convertedTouchPos[i].y < DragArea2D.y + rectDragArea.rect.height * 0.5f)
88.             }
89.         }
90.  
91.         if (Button01 != PreButton01) {
92.             if (Button01) {
93.                 Button01Down = true;
94.             } else {
95.                 Button01Up = true;
96.             }
97.         } else {
98.             Button01Down = false;
99.             Button01Up = false;
100.         }
101.  
102.         if (Button02 != PreButton02) {
103.             if (Button02) {
104.                 Button02Down = true;
105.             } else {
106.                 Button02Up = true;
107.             }
108.         } else {
109.             Button02Down = false;
110.             Button02Up = false;
111.         }
112.  
113.         if (Button03 != PreButton03) {
114.             if (Button03) {
115.                 Button03Down = true;
116.             } else {
117.                 Button03Up = true;
118.             }
119.         } else {
120.             Button03Down = false;
121.             Button03Up = false;
122.         }
123.  
124.         if (Button04 != PreButton04) {
125.             if (Button04) {
126.                 Button04Down = true;
127.             } else {
128.                 Button04Up = true;
129.             }
130.         } else {
131.             Button04Down = false;
132.             Button04Up = false;
133.         }
134.  
135. //        To record the state value of this frame
136.         PreButton01 = Button01;
137.         PreButton02 = Button02;
138.         PreButton03 = Button03;
139.         PreButton04 = Button04;
140.     }
141. }
142.  

 

Solved! Changed the void Update () routine in the Player Ship Control script to:

Code (CSharp):

1.     void Update () {
2.  
3.         if (TouchJoyPad.Button01) {
4.             transform.Rotate (0, 0, rotationspeed);
5.         }
6.     }

Added a public float rotationspeed of about 7.5f. Thanks for the help!