// Start is called before the first frame update
void Start()
{
move_script = GetComponent <movePlayer>();
combat_script = GetComponent <CombatScript>();
inventory_script = GetComponent <InventoryScript>();
grab_script = GetComponent <GrabScript>();
}
private void FixedUpdate()
{
//accumulates movement forces (walk, jump)
Vector2 current_movement_force = new Vector2(0.0f, 0.0f);
GrabScript grab_script = GetComponent <GrabScript>();
//clamp velocity
if (rigidbody_2d.velocity.magnitude > air_max_velocity)
{
rigidbody_2d.velocity *= (1.0f / rigidbody_2d.velocity.magnitude) * air_max_velocity;
}
//get the horizontal input
float moveHorizontal = move_input;
//compute direction (only horizontal input)
Vector3 direction = new Vector3(moveHorizontal, 0.0f, 0.0f);
//flip player based on horizontal input
if (Mathf.Abs(moveHorizontal) > 0.1f)
{
if (grab_script == null || grab_script.getGrabbedObject() == null)
{
transform.localScale = new Vector3(moveHorizontal < 0.0f ? 0.4f : -0.4f, 0.4f, 0.4f);
}
}
//if there is movement input
if (direction.magnitude < 0.0001f)
{
//slow down the horizontal velocity
current_movement_force = new Vector2(-rigidbody_2d.velocity.x * move_slowdown_force, 0.0f);
//set the animation state
animator.SetInteger("WalkState", 0);
animator.speed = 1.0f;
}
else
{
//scale max velocity to allow walking
float walk_Scale = Mathf.Abs(direction.x);
//compute boost scale
float boost_scale = boost_time > 0.001f ? 1.5f : 1.0f;
//compute scaling value to cancel out force on max speed
float x = Mathf.Clamp(Mathf.Abs(rigidbody_2d.velocity.x) - move_max_velocity * boost_scale * walk_Scale, 0.0f, move_max_velocity_stride);
x /= move_max_velocity_stride;
x = -(x * x) + 1.0f;
if (direction.x * rigidbody_2d.velocity.x < 0)
{
x = 1.0f;
}
//slow down movement when in air
x = current_jump_time > 0.01f ? x * move_air_scale : x;
//add movement force
current_movement_force = direction * move_force * x;
//set the animation state
animator.SetInteger("WalkState", (int)direction.normalized.x);
animator.speed = 0.1f + Mathf.Abs(rigidbody_2d.velocity.x) * animation_speed_scale;
}
//jumping
if (jump_input && !jump_cooldown && !jump_button_down)
{
//increment the jump time
current_jump_time += Time.fixedDeltaTime;
//add jump force or stop jumping if max jump time is reached
if (current_jump_time >= jumping_max_time || rigidbody_2d.velocity.y > jump_max_y_velocity)
{
jump_cooldown = true;
jump_button_down = true;
}
else
{
current_movement_force.y += jumping_force;
}
}
//if jump input is not set then release jump flag
if (!jump_input)
{
jump_button_down = false;
animator.SetInteger("JumpState", 0);
}
//play jump animation (to be added)
if (current_jump_time > 0.01f)
{
animator.SetInteger("JumpState", 1);
}
// apply move force to grabbed object
if (grab_script != null)
{
GameObject grabbed_object = grab_script.getGrabbedObject();
if (grabbed_object != null)
{
Rigidbody2D rigidbody = grabbed_object.GetComponent <Rigidbody2D>();
rigidbody.AddForce(new Vector3(current_movement_force.x, 0.0f, 0.0f));
// attach player to grabbed object
float distance = grab_script.getDistanceToOther(grabbed_object);
Vector3 d = (grabbed_object.transform.position - transform.position).normalized;
if (distance > 0.0f)
{
rigidbody_2d.AddForce(new Vector3(d.x, 0.0f, 0.0f) * distance * current_movement_force.magnitude * 2.0f);
}
}
}
//add the force to the physics object
rigidbody_2d.AddForce(current_movement_force);
}