1 using System;
2 using UnityEngine;
3 #if UNITY_EDITOR
4 using UnityEditor;
5 #endif
6
7 namespace UnityStandardAssets.CrossPlatformInput
8 {
9 // helps with managing tilt input on mobile devices
10 public class TiltInput : MonoBehaviour
11 {
12 // options for the various orientations
13 public enum AxisOptions
14 {
15 ForwardAxis,
16 SidewaysAxis,
17 }
18
19
20 [Serializable]
21 public class AxisMapping
22 {
23 public enum MappingType
24 {
25 NamedAxis,
26 MousePositionX,
27 MousePositionY,
28 MousePositionZ
29 };
30
31
32 public MappingType type;
33 public string axisName;
34 }
35
36
37 public AxisMapping mapping;
38 public AxisOptions tiltAroundAxis = AxisOptions.ForwardAxis;
39 public float fullTiltAngle = 25;
40 public float centreAngleOffset = 0;
41
42
43 private CrossPlatformInputManager.VirtualAxis m_SteerAxis;
44
45
46 private void OnEnable()
47 {
48 if (mapping.type == AxisMapping.MappingType.NamedAxis)
49 {
50 m_SteerAxis = new CrossPlatformInputManager.VirtualAxis(mapping.axisName);
51 CrossPlatformInputManager.RegisterVirtualAxis(m_SteerAxis);
52 }
53 }
54
55
56 private void Update()
57 {
58 float angle = 0;
59 if (Input.acceleration != Vector3.zero)
60 {
61 switch (tiltAroundAxis)
62 {
63 case AxisOptions.ForwardAxis:
64 angle = Mathf.Atan2(Input.acceleration.x, -Input.acceleration.y)*Mathf.Rad2Deg +
65 centreAngleOffset;
66 break;
67 case AxisOptions.SidewaysAxis:
68 angle = Mathf.Atan2(Input.acceleration.z, -Input.acceleration.y)*Mathf.Rad2Deg +
69 centreAngleOffset;
70 break;
71 }
72 }
73
74 float axisValue = Mathf.InverseLerp(-fullTiltAngle, fullTiltAngle, angle)*2 - 1;
75 switch (mapping.type)
76 {
77 case AxisMapping.MappingType.NamedAxis:
78 m_SteerAxis.Update(axisValue);
79 break;
80 case AxisMapping.MappingType.MousePositionX:
81 CrossPlatformInputManager.SetVirtualMousePositionX(axisValue*Screen.width);
82 break;
83 case AxisMapping.MappingType.MousePositionY:
84 CrossPlatformInputManager.SetVirtualMousePositionY(axisValue*Screen.width);
85 break;
86 case AxisMapping.MappingType.MousePositionZ:
87 CrossPlatformInputManager.SetVirtualMousePositionZ(axisValue*Screen.width);
88 break;
89 }
90 }
91
92
93 private void OnDisable()
94 {
95 m_SteerAxis.Remove();
96 }
97 }
98 }
99
100
101 namespace UnityStandardAssets.CrossPlatformInput.Inspector
102 {
103 #if UNITY_EDITOR
104 [CustomPropertyDrawer(typeof (TiltInput.AxisMapping))]
105 public class TiltInputAxisStylePropertyDrawer : PropertyDrawer
106 {
107 public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
108 {
109 EditorGUI.BeginProperty(position, label, property);
110
111 float x = position.x;
112 float y = position.y;
113 float inspectorWidth = position.width;
114
115 // Don't make child fields be indented
116 var indent = EditorGUI.indentLevel;
117 EditorGUI.indentLevel = 0;
118
119 var props = new[] {"type", "axisName"};
120 var widths = new[] {.4f, .6f};
121 if (property.FindPropertyRelative("type").enumValueIndex > 0)
122 {
123 // hide name if not a named axis
124 props = new[] {"type"};
125 widths = new[] {1f};
126 }
127 const float lineHeight = 18;
128 for (int n = 0; n < props.Length; ++n)
129 {
130 float w = widths[n]*inspectorWidth;
131
132 // Calculate rects
133 Rect rect = new Rect(x, y, w, lineHeight);
134 x += w;
135
136 EditorGUI.PropertyField(rect, property.FindPropertyRelative(props[n]), GUIContent.none);
137 }
138
139 // Set indent back to what it was
140 EditorGUI.indentLevel = indent;
141 EditorGUI.EndProperty();
142 }
143 }
144 #endif
145 }
