//If we have a rexObject slotted, this will notify it of any collisions and enable it to act accordingly
private void NotifyOfCollision(Collider2D col, RexObject.Side side, RexObject.CollisionType collisionType)
{
if (rexObject != null)
{
rexObject.OnPhysicsCollision(col, side, collisionType);
}
RexObject otherObject = col.GetComponent <RexObject>();
if (otherObject != null)
{
RexObject.Side otherSide;
if (side == RexObject.Side.Bottom)
{
otherSide = RexObject.Side.Top;
}
else if (side == RexObject.Side.Top)
{
otherSide = RexObject.Side.Bottom;
}
else if (side == RexObject.Side.Left)
{
otherSide = RexObject.Side.Right;
}
else
{
otherSide = RexObject.Side.Left;
}
otherObject.NotifyOfCollisionWithPhysicsObject(boxCol, otherSide, collisionType);
}
}
//Checks our horizontal collisions, and either stops us from moving or enables us to continue moving
private void CheckHorizontalCollisions(float velocityToCheck, bool isTranslatingDirectly = false)
{
properties.isAgainstLeftWall = false;
properties.isAgainstRightWall = false;
box = GetRectAtPosition(properties.position);
if (velocityToCheck != 0)
{
//edgebuffer prevents unintended horizontal collisions with a MovingPlatform you're riding on top of
float edgeBuffer = (isTranslatingDirectly) ? 0.05f : 0.0f;
Vector2 startPoint = new Vector2(box.center.x, box.center.y - box.height * 0.5f + edgeBuffer);
Vector2 endPoint = new Vector2(box.center.x, box.center.y + box.height * 0.5f);
RaycastHit2D[] raycastHits = new RaycastHit2D[raycastAmounts.horizontal];
int numberOfCollisions = 0;
float fraction = 0;
float sideRayLength = box.width / 2 + Mathf.Abs(velocityToCheck);
Vector2 direction = (velocityToCheck) > 0 ? Vector2.right : -Vector2.right;
bool didCollide = false;
for (int i = 0; i < raycastAmounts.horizontal; i++)
{
float raycastSpacing = (float)i / (float)(raycastAmounts.horizontal - 1);
Vector2 rayOrigin;
if (i == 1 && !willStickToMovingPlatforms)
{
rayOrigin = Vector2.Lerp(startPoint, endPoint, ((float)(i - 1) / (float)(raycastAmounts.horizontal - 1)) + 0.005f);
}
else if (i == raycastAmounts.horizontal - 2 && !willStickToMovingPlatforms)
{
rayOrigin = Vector2.Lerp(startPoint, endPoint, ((float)(i + 1) / (float)(raycastAmounts.horizontal - 1)) - 0.005f);
}
else
{
rayOrigin = Vector2.Lerp(startPoint, endPoint, raycastSpacing);
}
raycastHits[i] = Physics2D.Raycast(rayOrigin, direction, sideRayLength, collisionLayerMask);
//Debug.DrawRay(rayOrigin, direction * sideRayLength, Color.red);
if (raycastHits[i].fraction > 0)
{
didCollide = true;
if (fraction > 0)
{
float slopeAngle = Vector2.Angle(raycastHits[i].point - raycastHits[i - 1].point, Vector2.right);
if (Mathf.Abs(slopeAngle - 90) < slopeAngleBuffer) //If the slope is too steep, treat it as a wall
{
if (direction == Vector2.right)
{
properties.isAgainstRightWall = true;
}
else
{
properties.isAgainstLeftWall = true;
}
if (willStickToMovingPlatforms)
{
MovingPlatform platform = raycastHits[i].collider.GetComponent <MovingPlatform>();
if (platform != null)
{
movingPlatform = platform;
}
else
{
movingPlatform = null;
}
}
properties.position += (direction * (raycastHits[i].fraction * sideRayLength - box.width / 2.0f));
properties.velocity = new Vector2(0, properties.velocity.y);
properties.externalVelocity = new Vector2(0, properties.externalVelocity.y);
RexObject.Side side = (direction == Vector2.right) ? RexObject.Side.Right : RexObject.Side.Left;
if (side == RexObject.Side.Left && DidHitLeftWallThisFrame() && velocityToCheck < 0.0f)
{
NotifyOfCollision(raycastHits[i].collider, RexObject.Side.Left, RexObject.CollisionType.Enter);
}
else if (side == RexObject.Side.Right && DidHitRightWallThisFrame() && velocityToCheck > 0.0f)
{
NotifyOfCollision(raycastHits[i].collider, RexObject.Side.Right, RexObject.CollisionType.Enter);
}
break;
}
}
numberOfCollisions++;
fraction = raycastHits[i].fraction;
}
if (!didCollide && isTranslatingDirectly)
{
properties.position = new Vector2(transform.position.x + velocityToCheck, properties.position.y);
}
}
}
else
{
CheckForWallContact(Direction.Horizontal.Left);
CheckForWallContact(Direction.Horizontal.Right);
}
}
