/// <summary>pretends to hold the jump button for the specified duration</summary>
public void FixedUpdate(CharacterMove p)
{
if (inputHeld = (PressJump > 0))
{
PressJump -= Time.deltaTime;
}
if (impulseActive && !inputHeld)
{
impulseActive = false;
}
if (!inputHeld)
{
return;
}
bool isStableOnGround = p.IsStableOnGround();
// check stable footing for the jump
if (isStableOnGround)
{
jumpsSoFar = 0;
heightReached = 0;
currentJumpVelocity = 0;
timeHeld = 0;
}
// calculate the jump
float gForce = -Physics.gravity.y * p.rb.mass;
Vector3 jump_force = Vector3.zero, jumpDirection = Vector3.up;//-p.gravity.dir;
// if the user wants to jump, and is allowed to jump again
if (!impulseActive && (jumpsSoFar < maxJumps))
{
heightReached = 0;
timeHeld = 0;
jumpsSoFar++;
targetHeight = minJumpHeight * p.rb.mass;
float velocityRequiredToJump = Mathf.Sqrt(targetHeight * 2 * gForce);
// cancel out current jump/fall forces
if (jumpStartResetsVerticalMotion)
{
float motionInVerticalDirection = Vector3.Dot(jumpDirection, p.rb.velocity);
jump_force -= (motionInVerticalDirection * jumpDirection) / Time.deltaTime;
}
// apply proper jump force
currentJumpVelocity = velocityRequiredToJump;
peaked = false;
jump_force += (jumpDirection * currentJumpVelocity) / Time.deltaTime;
impulseActive = true;
}
else
// if a jump is happening
if (currentJumpVelocity > 0)
{
// handle jump height: the longer you hold jump, the higher you jump
if (inputHeld)
{
timeHeld += Time.deltaTime;
if (timeHeld >= fullJumpPressDuration)
{
targetHeight = maxJumpHeight;
timeHeld = fullJumpPressDuration;
}
else
{
targetHeight = minJumpHeight + ((maxJumpHeight - minJumpHeight) * timeHeld / fullJumpPressDuration);
targetHeight *= p.rb.mass;
}
if (heightReached < targetHeight)
{
float requiredJumpVelocity = Mathf.Sqrt((targetHeight - heightReached) * 2 * gForce);
float forceNeeded = requiredJumpVelocity - currentJumpVelocity;
jump_force += (jumpDirection * forceNeeded) / Time.deltaTime;
currentJumpVelocity = requiredJumpVelocity;
}
}
}
else
{
impulseActive = false;
}
if (currentJumpVelocity > 0)
{
float moved = currentJumpVelocity * Time.deltaTime;
heightReached += moved;
heightReachedTotal += moved;
currentJumpVelocity -= gForce * Time.deltaTime;
}
else if (!peaked && !isStableOnGround)
{
peaked = true;
impulseActive = false;
}
p.rb.AddForce(jump_force);
}