Josh
2 years ago
6 changed files with 306 additions and 24 deletions
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using UnityEngine; |
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using System.Collections; |
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using System.Runtime.InteropServices; |
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using System; |
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using System.Collections.Generic; |
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using UnityEngine.UI; |
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public class TrackballInputManager : MonoBehaviour |
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{ |
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const float defaultMiceSensitivity = 1f; |
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const float upMultiplier = .5f; |
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const float accelerationThreshold = 40; |
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const float accelerationMultiplier = 2; |
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[DllImport("LibRawInput")] |
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private static extern bool init(); |
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[DllImport("LibRawInput")] |
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private static extern bool kill(); |
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[DllImport("LibRawInput")] |
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private static extern IntPtr poll(); |
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public const byte RE_DEVICE_CONNECT = 0; |
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public const byte RE_MOUSE = 2; |
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public const byte RE_DEVICE_DISCONNECT = 1; |
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[StructLayout(LayoutKind.Sequential)] |
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public struct RawInputEvent |
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{ |
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public int devHandle; |
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public int x, y, wheel; |
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public byte press; |
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public byte release; |
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public byte type; |
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} |
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public class MousePointer |
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{ |
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public GameObject obj; |
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public Vector2 position; |
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public int deviceID; |
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public int playerID; |
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public float sensitivity; |
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} |
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public static TrackballInputManager instance; |
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[SerializeField] List<Player> _players; |
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// Start is called before the first frame update
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void Start() |
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{ |
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instance = this; |
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bool res = init(); |
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Debug.Log("Init() ==> " + res); |
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//Debug.Log(Marshal.SizeOf(typeof(RawInputEvent)));
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//canvas = GetComponent<Canvas>();
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//canvasRect = GetComponent<RectTransform>();
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Cursor.lockState = CursorLockMode.Locked; |
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Cursor.visible = false; |
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} |
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public void OnDestroy() |
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{ |
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instance = null; |
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} |
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int lastEvents = 0; |
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bool isInit = true; |
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void Update() |
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{ |
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// Poll the events and properly update whatever we need
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IntPtr data = poll(); |
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int numEvents = Marshal.ReadInt32(data); |
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if (numEvents > 0) lastEvents = numEvents; |
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for (int i = 0; i < numEvents; ++i) |
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{ |
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var ev = new RawInputEvent(); |
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long offset = data.ToInt64() + sizeof(int) + i * Marshal.SizeOf(ev); |
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ev.devHandle = Marshal.ReadInt32(new IntPtr(offset + 0)); |
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ev.x = Marshal.ReadInt32(new IntPtr(offset + 4)); |
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ev.y = Marshal.ReadInt32(new IntPtr(offset + 8)); |
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ev.wheel = Marshal.ReadInt32(new IntPtr(offset + 12)); |
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ev.press = Marshal.ReadByte(new IntPtr(offset + 16)); |
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ev.release = Marshal.ReadByte(new IntPtr(offset + 17)); |
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ev.type = Marshal.ReadByte(new IntPtr(offset + 18)); |
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//Debug.Log(getEventName(ev.type) + ": H=" + ev.devHandle + "; (" + ev.x + ";" + ev.y + ") Down=" + ev.press + " Up=" + ev.release);
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if (ev.type == RE_DEVICE_CONNECT) AddPlayer(ev.devHandle); |
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else if (ev.type == RE_DEVICE_DISCONNECT) RemovePlayer(ev.devHandle); |
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else if (ev.type == RE_MOUSE) |
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{ |
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Player player = null; |
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if (_playersByDeviceId.TryGetValue(ev.devHandle, out player)) |
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{ |
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float dx = ev.x * defaultMiceSensitivity; |
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float dy = ev.y * defaultMiceSensitivity; |
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if (Mathf.Abs(dx) > accelerationThreshold) dx *= accelerationMultiplier; |
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if (Mathf.Abs(dy) > accelerationThreshold) dy *= accelerationMultiplier; |
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if (dy < 0) |
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dy *= upMultiplier; |
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//use this method to move using position
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//player.transform.position = new Vector2(player.transform.position.x + dx, player.transform.position.y - dy);
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//use this method to move using velocity
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player._rigidbody.velocity += new Vector2(dx, -dy); |
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} |
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else |
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{ |
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Debug.Log("Unknown device found"); |
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AddPlayer(ev.devHandle); |
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} |
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} |
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} |
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Marshal.FreeCoTaskMem(data); |
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} |
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void RemovePlayer(int deviceId) |
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{ |
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Debug.Log("Removing DeviceID " + deviceId); |
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_playersByDeviceId[deviceId].DeviceId = null; |
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_playersByDeviceId.Remove(deviceId); |
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} |
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Dictionary<int, Player> _playersByDeviceId = new Dictionary<int, Player>(); |
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int AddPlayer(int deviceId) |
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{ |
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if (!isInit) |
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{ |
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Debug.LogError("Not initialized"); |
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return -1; |
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} |
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Player player = null; |
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_playersByDeviceId.TryGetValue(deviceId, out player); |
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if (player != null) |
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{ |
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Debug.LogError("This device already has a player"); |
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return -1; |
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} |
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Debug.Log("Adding DeviceID " + deviceId); |
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foreach (Player p in _players) |
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{ |
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if (p.DeviceId == null) |
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{ |
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p.DeviceId = deviceId; |
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_playersByDeviceId.Add(deviceId, p); |
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return deviceId; |
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} |
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} |
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Debug.Log("no players left to add"); |
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return -1; |
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} |
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} |
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@ -0,0 +1,11 @@ |
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fileFormatVersion: 2 |
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guid: 70de4eb8e48bea54b864b5d20448ee50 |
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MonoImporter: |
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externalObjects: {} |
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serializedVersion: 2 |
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defaultReferences: [] |
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executionOrder: 0 |
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icon: {instanceID: 0} |
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userData: |
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assetBundleName: |
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assetBundleVariant: |
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