Files
GoakeFlax/Source/Game/PlayerMovement.cs
GoaLitiuM f821959896 more stuf
2021-05-29 13:27:11 +03:00

867 lines
31 KiB
C#

using System.Collections.Generic;
using FlaxEngine;
using Cabrito;
using System.Diagnostics;
using System.Threading.Tasks;
using FlaxEngine.Assertions;
namespace Game
{
public struct TraceInfo_Old
{
public RayCastHit[] hitInfos;
public bool startSolid;
// closest hit
public float fraction;
public Vector3 endPosition;
public Vector3 hitNormal;
public Vector3 hitPosition;
// furthest hit
//public float maxFraction;
//public Vector3 maxHitNormal;
//public Vector3 maxEndPosition;
}
public class PlayerMovement : Script
{
[Limit(0, 9000), Tooltip("Base Movement speed")]
public float MoveSpeed { get; set; } = 320;
private float viewPitch;
private float viewYaw;
private float viewRoll;
private InputEvent onExit = new InputEvent("Exit");
private const float collisionMargin = 0.031f * 1.666f;
Actor rootActor;
private RigidBody rigidBody;
public override void OnAwake()
{
base.OnAwake();
onExit.Triggered += () =>
{
if (Console.IsSafeToQuit)
Engine.RequestExit();
};
rootActor = Actor.GetChild(0);
rigidBody = Actor.As<RigidBody>();
rigidBody.CollisionEnter += OnCollisionEnter;
rigidBody.TriggerEnter += OnTriggerEnter;
rigidBody.TriggerExit += OnTriggerExit;
/*proxyBody.CollisionEnter += delegate(Collision collision) {
if (collision.OtherActor.AttachedRigidBody != null)
{
proxyCollision = true;
}
};
proxyBody.CollisionExit += delegate(Collision collision) {
if (collision.OtherActor.AttachedRigidBody != null)
{
proxyCollision = false;
}
};*/
}
private List<PhysicsColliderActor> touchingActors = new List<PhysicsColliderActor>();
private void OnTriggerEnter(PhysicsColliderActor colliderActor)
{
//if (colliderActor.AttachedRigidBody == null)
// return;
touchingActors.Add(colliderActor);
Console.Print("trogger: ");
}
private void OnTriggerExit(PhysicsColliderActor colliderActor)
{
//if (colliderActor.AttachedRigidBody == null)
// return;
touchingActors.Remove(colliderActor);
Console.Print("untrogger: ");
}
private void OnCollisionEnter(Collision collision)
{
//Console.Print("collision: ");
}
public override void OnDestroy()
{
base.OnDestroy();
onExit.Dispose();
}
public override void OnStart()
{
var initialEulerAngles = Actor.Orientation.EulerAngles;
viewPitch = initialEulerAngles.X;
viewYaw = initialEulerAngles.Y;
viewRoll = initialEulerAngles.Z;
}
/// <summary>
/// Checks for overlapping colliders in place using the player's rigidbody.
/// </summary>
/// <param name="position">Position</param>
/// <returns></returns>
private Collider[] TracePlayer(Vector3 position, float extra = 0.0f)
{
Collider[] colliders = null;
bool collided = false;
var capsuleCollider = Actor.GetChild<CapsuleCollider>();
var boxCollider = Actor.GetChild<BoxCollider>();
var meshCollider = Actor.GetChild<MeshCollider>();
PhysicsColliderActor colliderActor = null;
if (capsuleCollider && capsuleCollider.IsActive)
{
colliderActor = capsuleCollider;
collided = Physics.OverlapCapsule(position,
capsuleCollider.Radius + extra, capsuleCollider.Height + extra,
out colliders, capsuleCollider.Orientation,
uint.MaxValue,
false);
}
else if (meshCollider && meshCollider.IsActive)
{
colliderActor = meshCollider;
collided = Physics.OverlapConvex(position,
meshCollider.CollisionData, meshCollider.Scale + extra,
out colliders, meshCollider.Orientation,
uint.MaxValue,
false);
}
else if (boxCollider && boxCollider.IsActive)
{
colliderActor = boxCollider;
collided = Physics.OverlapBox(position,
boxCollider.OrientedBox.Extents + extra,
out colliders, boxCollider.Orientation,
uint.MaxValue,
false);
}
else
Assert.Fail("No supported colliders found for rigidbody");
if (!collided)
return colliders;
List<Collider> collidersFiltered = new List<Collider>();
foreach (var collider in colliders)
{
if (collider == colliderActor)
continue;
collidersFiltered.Add(collider);
}
if (collidersFiltered.Count == 0)
return colliders; // self-collision?
return collidersFiltered.ToArray();
}
/// <summary>
/// Sweeps the player rigidbody in world and returns geometry which was hit during the trace.
/// </summary>
/// <param name="start">Start position</param>
/// <param name="end">End position</param>
/// <returns></returns>
private TraceInfo TracePlayer(Vector3 start, Vector3 end, float tolerance = 0.0f)
{
TraceInfo traceInfo = new TraceInfo();
Vector3 delta = end - start;
float maxDistance = delta.Length;
Vector3 direction = delta.Normalized;
bool collided = false;
var capsuleCollider = Actor.GetChild<CapsuleCollider>();
var boxCollider = Actor.GetChild<BoxCollider>();
var meshCollider = Actor.GetChild<MeshCollider>();
PhysicsColliderActor colliderActor = null;
if (capsuleCollider && capsuleCollider.IsActive)
{
colliderActor = capsuleCollider;
collided = Physics.CapsuleCastAll(start,
capsuleCollider.Radius + tolerance, capsuleCollider.Height,
direction, out traceInfo.hitInfos, capsuleCollider.Orientation, maxDistance,
uint.MaxValue,
false);
}
else if (meshCollider && meshCollider.IsActive)
{
colliderActor = meshCollider;
collided = Physics.ConvexCastAll(start,
meshCollider.CollisionData, meshCollider.Scale + tolerance,
direction, out traceInfo.hitInfos, meshCollider.Orientation, maxDistance,
uint.MaxValue,
false);
}
else if (boxCollider && boxCollider.IsActive)
{
colliderActor = boxCollider;
collided = Physics.BoxCastAll(start,
boxCollider.OrientedBox.Extents + tolerance,
direction, out traceInfo.hitInfos, boxCollider.Orientation, maxDistance, uint.MaxValue,
false);
}
if (collided)
{
List<RayCastHit> hitInfosFiltered = new List<RayCastHit>();
RayCastHit closest = new RayCastHit();
closest.Distance = float.MaxValue;
foreach (var hitInfo in traceInfo.hitInfos)
{
if (hitInfo.Collider == colliderActor)
continue;
hitInfosFiltered.Add(hitInfo);
if (hitInfo.Distance < closest.Distance && hitInfo.Distance != 0.0f)
closest = hitInfo;
}
if (hitInfosFiltered.Count == 0)
collided = false; // self-collision?
else //if (closest.Distance > 0f)
{
if (closest.Distance == float.MaxValue)
{
foreach (var hitInfo in hitInfosFiltered)
{
if (hitInfo.Distance < closest.Distance)
closest = hitInfo;
}
}
traceInfo.hitInfos = hitInfosFiltered.ToArray();
traceInfo.fraction = closest.Distance / maxDistance;
traceInfo.hitNormal = closest.Normal;
traceInfo.hitPosition = closest.Point;
traceInfo.endPosition = start + (delta * traceInfo.fraction);
if (traceInfo.fraction == 0f && maxDistance > 0f)
traceInfo.startSolid = true;
}
/*else
{
traceInfo.startSolid = true;
traceInfo.fraction = 0f;
}*/
}
if (!collided)
{
traceInfo.hitInfos = new RayCastHit[0];
traceInfo.fraction = 1f;
traceInfo.endPosition = end;
}
return traceInfo;
}
public override void OnDebugDraw()
{
base.OnDebugDraw();
var capsuleCollider = Actor.GetChild<CapsuleCollider>();
var boxCollider = Actor.GetChild<BoxCollider>();
var meshCollider = Actor.GetChild<MeshCollider>();
if (capsuleCollider && capsuleCollider.IsActive)
{
Quaternion rotation = capsuleCollider.LocalOrientation * Quaternion.Euler(0f, 90f, 0f);
DebugDraw.DrawWireTube(capsuleCollider.Position, rotation, capsuleCollider.Radius, capsuleCollider.Height, Color.GreenYellow * 0.8f);
}
else if (meshCollider && meshCollider.IsActive)
{
//Quaternion rotation = meshCollider.LocalOrientation * Quaternion.Euler(0f, 90f, 0f);
DebugDraw.DrawWireCylinder(meshCollider.Position, meshCollider.Orientation, capsuleCollider.Radius, capsuleCollider.Height + capsuleCollider.Radius * 2, Color.GreenYellow * 0.8f);
//DebugDraw.DrawWireTube(meshCollider.Position, rotation, meshCollider.Radius, meshCollider.Height, Color.GreenYellow * 0.8f);
}
else if (boxCollider && boxCollider.IsActive)
{
DebugDraw.DrawWireBox(boxCollider.OrientedBox.GetBoundingBox(), Color.GreenYellow * 0.8f);
}
}
private void SlideMove(ref Vector3 position, bool stepUp, ref Vector3 velocity, bool asdf = false)
{
if (velocity.IsZero)
return;
Vector3 originalPosition = position;
Vector3 originalVelocity = velocity;
float timeleft = Time.DeltaTime;
List<Vector3> hitNormals = new List<Vector3>();
for (int bump = 0; bump < 4; bump++)
{
Vector3 startPos = position;
Vector3 endPos = position + (velocity * timeleft);
TraceInfo trace = TracePlayer(startPos, endPos);
// TODO: handle portals here
float fraction = trace.fraction;
Vector3 hitNormal = trace.hitNormal;
if (trace.startSolid)
{
velocity = Vector3.Zero;
break;
}
if (physicsInteractions)
{
RigidBody rigidBody = Actor.As<RigidBody>();
foreach (var hit in trace.hitInfos)
{
if (hit.Collider.AttachedRigidBody == null || hit.Collider.AttachedRigidBody.IsKinematic)
continue;
Vector3 force = -hit.Normal * velocity.Length * rigidBody.Mass;
//Console.Print("move force: " + (force.Length / timeleft));
hit.Collider.AttachedRigidBody.AddForce(force, ForceMode.Force);
}
}
if (fraction > 0f)
{
position = trace.endPosition;
hitNormals.Clear(); // this is present in some forks, not in Q3
}
if (fraction >= 1f)
break;
timeleft *= 1.0f - fraction;
// this doesn't seem to do anything, we never have any hitNormals stored here
bool hitPreviousNormal = false;
foreach (Vector3 normal in hitNormals)
{
if (Vector3.Dot(hitNormal, normal) > 0.99)
{
// nudge away from the same wall we hit earlier and try again
velocity += hitNormal;
hitPreviousNormal = true;
break;
}
}
if (hitPreviousNormal)
continue;
hitNormals.Add(hitNormal);
if (hitNormals.Count != 1)
Console.Print("hitNormals: " + hitNormals.Count);
int plane;
Vector3 normalMargin = Vector3.Zero;
for (plane = 0; plane < hitNormals.Count; plane++)
{
Vector3 normal = hitNormals[plane];
// clip velocity
velocity -= normal * Vector3.Dot(velocity, normal);
//velocity = Vector3.ProjectOnPlane(velocity, normal);
//traceOffset = normal * 1f;
normalMargin += normal;
//position += normal * 0.031f;
int plane2;
for (plane2 = 0; plane2 < hitNormals.Count; plane2++)
{
if (plane == plane2)
continue;
if (Vector3.Dot(velocity, hitNormals[plane2]) < 0f)
break;
}
if (plane2 == hitNormals.Count)
break;
}
// push off slightly away from the walls to not get stuck
position += normalMargin.Normalized * collisionMargin;
if (plane == hitNormals.Count)
{
if (hitNormals.Count == 2)
{
Vector3 dir = Vector3.Cross(hitNormals[0], hitNormals[1]);
//dir.Normalize();
float dist = Vector3.Dot(dir, velocity);
velocity = dist * dir;
}
else
{
velocity = Vector3.Zero;
break;
}
}
else
{
// nudge very slightly away from the wall to avoid getting stuck
//position += trace.hitNormal * 0.01f;
//velocity += trace.hitNormal * 0.01f;
}
// prevents bouncing against the wall
if (/*velocity.Length > 0f && */Vector3.Dot(velocity, originalVelocity) <= 0f)
{
velocity = Vector3.Zero;
break;
}
}
}
[ReadOnly]
public bool onGround = false;
private const float friction = 4f;
private const float stopspeed = 100f;
private const float accelerationGround = 10f;
private const float jumpVelocity = 270f;
private const float maxAirSpeed = 320f;
private const float maxAirStrafeSpeed = 30f; //Q2+
private const float airAcceleration = 0.4f * 0f; //Q2+
private const float airStopAcceleration = 2.5f * 0f; //Q2+
private const float airStrafeAcceleration = 70f * 0f; //CPM?
private const float strafeAcceleration = 10f; //QW
private const float airControl = 0f; //CPM
private bool physicsInteractions = true;
private bool jumped = false;
private Vector3 safePosition;
[ReadOnly]
public float CurrentVelocity { get { return currentVelocity.Length; } set {} }
private Vector3 currentVelocity;
public override void OnFixedUpdate()
{
Transform rootTrans = rootActor.Transform;
Vector3 inputDirection = new Vector3(InputManager.GetAxis("Horizontal"), 0.0f, InputManager.GetAxis("Vertical"));
Vector3 moveDirection = rootTrans.TransformDirection(inputDirection);
Vector3 position = rigidBody.Position;
Vector3 velocity = rigidBody.LinearVelocity;//currentVelocity;
Vector3 wishVelocity = Vector3.Zero;
if (!inputDirection.IsZero)
wishVelocity = moveDirection.Normalized * MoveSpeed;
#if false
Collider[] overlaps = TracePlayer(rigidBody.Position, 0.001f * 0f);
if (overlaps.Length > 0)
{
// overlapping with other objects
//Console.Print("overlap");
Collider playerCollider = null;
var capsuleCollider = Actor.GetChild<CapsuleCollider>();
var boxCollider = Actor.GetChild<BoxCollider>();
var meshCollider = Actor.GetChild<MeshCollider>();
if (capsuleCollider && capsuleCollider.IsActive)
{
playerCollider = capsuleCollider;
}
else if (meshCollider && meshCollider.IsActive)
{
playerCollider = meshCollider;
}
else if (boxCollider && boxCollider.IsActive)
{
playerCollider = boxCollider;
}
foreach (var overlap in overlaps)
{
if (Collider.ComputePenetration(playerCollider, overlap, out Vector3 direction, out float distance))
{
//Console.Print("overlap ok");
var type = overlap.Parent.GetType();
if (overlap.Parent.GetType() == typeof(RigidBody))
{
var otherRigidBody = overlap.Parent.As<RigidBody>();
var otherMomentum = otherRigidBody.LinearVelocity * otherRigidBody.Mass;
var myMomentum = rigidBody.LinearVelocity * rigidBody.Mass;
var newVelocity = (otherMomentum + myMomentum) / (otherRigidBody.Mass + rigidBody.Mass);
Console.Print(overlap.Parent.Name + ": "+ newVelocity.Length.ToString());
//otherRigidBody.LinearVelocity += -direction.Normalized * newVelocity;
otherRigidBody.AddForce(-direction.Normalized * newVelocity, ForceMode.Force);
}
position += direction * (distance + 0.001f);
/*var oldVelocity = velocity;
velocity = direction * (distance + 0.001f);
velocity /= Time.DeltaTime;
SlideMove(ref position, false, ref velocity);
velocity = oldVelocity;*/
//position += direction * (distance + 0.001f);
//velocity = Vector3.Zero;
break;
}
else
{
//Console.Print("overlap safepos");
position = safePosition;
velocity = Vector3.Zero;
break;
}
}
/*const float overlapResolveSpeed = 1.0f;
foreach (var overlap in overlaps)
{
var overlapRigidbody = overlap.Parent.GetType() == typeof(RigidBody) ? overlap.Parent.As<RigidBody>() : null;
if (overlapRigidbody != null)
{
Vector3 normal = (rigidBody.Position - overlapRigidbody.Position).Normalized;
position += normal * overlapResolveSpeed;
break;
}
else
{
position = safePosition;
velocity = Vector3.Zero;
break;
}
}*/
}
#endif
bool beingPushed = false;
if (touchingActors.Count > 0)
beingPushed = true;
/*bool beingPushed = false;
Collider[] overlaps = TracePlayer(rigidBody.Position);
if (overlaps.Length > 0)
{
//beingPushed = true;
Collider playerCollider = null;
var capsuleCollider = Actor.GetChild<CapsuleCollider>();
var boxCollider = Actor.GetChild<BoxCollider>();
var meshCollider = Actor.GetChild<MeshCollider>();
if (capsuleCollider && capsuleCollider.IsActive)
{
playerCollider = capsuleCollider;
}
else if (meshCollider && meshCollider.IsActive)
{
playerCollider = meshCollider;
}
else if (boxCollider && boxCollider.IsActive)
{
playerCollider = boxCollider;
}
foreach (var overlap in overlaps)
{
if (Collider.ComputePenetration(playerCollider, overlap, out Vector3 direction, out float distance))
{
beingPushed = true;
}
else
{
}
}
}*/
// categorize position
onGround = true;
Vector3 groundDelta = Physics.Gravity.Normalized * (collisionMargin*2);
TraceInfo traceGround = TracePlayer(position, position + groundDelta);
if (!traceGround.startSolid && traceGround.fraction < 1f &&
-Vector3.Dot(Physics.Gravity.Normalized, traceGround.hitNormal) < 0.7f)
{
// slope
// clip velocity
Vector3 bounce = groundDelta;
//Vector3 velocityProjected = Vector3.ProjectOnPlane(velocity, normal);
float backoff = Vector3.Dot(bounce, traceGround.hitNormal) * 2f;
bounce -= traceGround.hitNormal * backoff;
//velocity = velocityProjected;
Vector3 point = (position + groundDelta) +
(1f - traceGround.fraction) * bounce;
// retrace
traceGround = TracePlayer(position, position + point);
}
if (!traceGround.startSolid && (traceGround.fraction >= 1f ||
-Vector3.Dot(Physics.Gravity.Normalized, traceGround.hitNormal) < 0.7f))
{
// falling or sliding down a slope
onGround = false;
}
else
{
onGround = !traceGround.startSolid;
}
//onGround |= overlaps.Length > 0;
if (onGround && physicsInteractions && traceGround.hitInfos.Length > 0)
{
// apply resting force to rigid bodies under the player
//bool collided = false;
foreach (var hit in traceGround.hitInfos)
{
if (hit.Collider.AttachedRigidBody == null || hit.Collider.AttachedRigidBody.IsKinematic)
continue;
if (hit.Distance <= 0f)
continue;
//Console.Print(Physics.Gravity.Length.ToString());
Vector3 force = -hit.Normal * (Physics.Gravity.Length) * rigidBody.Mass * Time.DeltaTime;
hit.Collider.AttachedRigidBody.AddForceAtPosition(force, hit.Point, ForceMode.Impulse);
//collided = true;
//Console.Print("downforce: " + force.Length / Time.DeltaTime);
}
//if (collided)
// fraction = 1.0f; // finish movement and stop
}
/*if (!onGround)
Console.Print("air");
else
Console.Print("ground");*/
/*if (onGround)
{
// snap to ground
if (!traceGround.startSolid)
{
Vector3 newPos = rigidBody.Position;
if (traceGround.fraction < 1f)
{
//newPos += -Physics.Gravity.Normalized * traceGround.fraction;
}
rigidBody.Position = newPos;
}
}*/
/*if (traceGround.startSolid)
{
Console.Print("stuk: ");
rigidBody.Position = safePosition;
traceGround = TracePlayer(rigidBody.Position, rigidBody.Position + Physics.Gravity.Normalized,
false);
//onGround = true;
//currentVelocity.Y = 0f;
}
if (!traceGround.startSolid)
{
foreach (var hitInfo in traceGround.hitInfos)
{
var dot = Vector3.Dot(Physics.Gravity.Normalized, hitInfo.Normal);
if (-dot >= 0.7) //~45deg slope
{
//Console.Print("d: " + hitInfo.Distance);
Vector3 newPos = rigidBody.Position;
if (hitInfo.Distance > 0f)
newPos += Physics.Gravity.Normalized * (hitInfo.Distance - 0.01f);
else
newPos += hitInfo.Normal * 0.1f;
rigidBody.Position = newPos;
onGround = true;
currentVelocity.Y = 0f;
break;
//if (currentVelocity.Length > 0.01f)
// Console.Print("groundvel: " + currentVelocity.ToString());
//currentVelocity.Y = 0.0f;
}
}
}*/
// jump
if (onGround)
{
if (!jumped && InputManager.GetAction("Jump"))
{
//jumped = true;
velocity += Vector3.Up * jumpVelocity;
onGround = false;
}
else if (jumped) // jump released
jumped = false;
}
// ground friction
if (onGround)
{
float currentSpeed = velocity.Length;
float control = currentSpeed < stopspeed ? stopspeed : currentSpeed;
var drop = control * friction * Time.DeltaTime;
float newspeed = currentSpeed - drop;
if (newspeed < 0)
newspeed = 0;
if (currentSpeed < 0.0001f)
velocity *= 0;
else
velocity *= newspeed / currentSpeed;
}
//bool stepUp = false;
if (onGround) // ground acceleration
{
ApplyAcceleration(ref velocity, wishVelocity.Normalized, wishVelocity.Length, float.MaxValue, accelerationGround);
}
else // air acceleration
{
var wishspeed = wishVelocity.Length;
if (wishspeed > maxAirSpeed)
wishspeed = maxAirSpeed;
if (strafeAcceleration != 0f)
ApplyAcceleration(ref velocity, wishVelocity.Normalized, wishspeed, maxAirStrafeSpeed, strafeAcceleration);
//stepUp = true;
}
if (!onGround)
{
velocity += Physics.Gravity * Time.DeltaTime;
//Console.Print("grav");
}
//else
// Console.Print("Yv: " + currentVelocity.Y);
safePosition = rigidBody.Position;
currentVelocity = velocity;
if (!rigidBody.IsKinematic)
{
//rigidBody.IsKinematic = false;
//rigidBody.Position = position;
rigidBody.LinearVelocity = velocity;
//Console.Print("being pushed " + rigidBody.LinearVelocity.Length);
//rigidBody.AddForce(velocity + ((position - rigidBody.Position) * Time.DeltaTime), ForceMode.Impulse);
}
else
{
SlideMove(ref position, false, ref velocity);
//rigidBody.IsKinematic = true;
rigidBody.Position = position;
rigidBody.LinearVelocity = velocity;
}
/*if (proxyBody != null)
{
if (beingPushed)
{
//rigidBody.Position = proxyBody.Position;
rigidBody.LinearVelocity = proxyBody.LinearVelocity;
//rigidBody.Position += rigidBody.LinearVelocity * Time.DeltaTime;
}
else
{
var proxyVelocity = position - proxyBody.Position;
//proxyBody.LinearVelocity += proxyVelocity;
//rigidBody.Position = proxyBody.Position;
proxyBody.Position = position;
proxyBody.LinearVelocity = velocity;
}
}*/
//rigidBody.LinearVelocity = velocity;
//if (currentVelocity.Length > 0.01f)
// Console.Print("vel: " + currentVelocity.ToString());
}
void ApplyAcceleration(ref Vector3 velocity, Vector3 wishDir, float wishspeed, float maxWishspeed, float acceleration)
{
float wishspeedOrig = wishspeed;
if (wishspeed > maxWishspeed)
wishspeed = maxWishspeed;
float currentSpeed = Vector3.Dot(velocity, wishDir);
float addSpeed = wishspeed - currentSpeed;
if (addSpeed <= 0f)
return;
float accelSpeed = acceleration * wishspeedOrig * Time.DeltaTime;
if (accelSpeed > addSpeed)
accelSpeed = addSpeed;
velocity += accelSpeed * wishDir;
}
public override void OnUpdate()
{
float xAxis = InputManager.GetAxisRaw("Mouse X");
float yAxis = InputManager.GetAxisRaw("Mouse Y");
if (xAxis != 0.0f || yAxis != 0.0f)
{
var camera = rootActor.GetChild<Camera>();
viewPitch += yAxis;
viewYaw += xAxis;
viewPitch = Mathf.Clamp(viewPitch, -90.0f, 90.0f);
// root orientation must be set first
rootActor.Orientation = Quaternion.Euler(0, viewYaw, 0);
camera.Orientation = Quaternion.Euler(viewPitch, viewYaw, viewRoll);
}
}
}
}