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extends RigidBody2D
#Accelerating
var hp = 4.0
var acceleration = 5
var isForward = true
var velocity
var isSkid = false;
var elapsed = 0
var gripDelay = 0
var carAngle
var carVector
var velVector
func _ready():
pass
func _process(delta):
carAngle = get_node("../../../CarBody").get_transform().get_rotation()
carVector = Vector2(cos(carAngle + PI/2),sin(carAngle + PI/2))
velVector = get_node("../../../CarBody").get_linear_velocity()
velocity = measure_velocity()
isForward = is_forward()
set_rotation(carAngle)
# gripDelay = has_grip(0.4,delta)
isSkid = Input.is_action_pressed("grip")
if Input.is_action_pressed("grip") || Input.is_action_pressed("brake"):
null_slide(max(5,velocity/7),delta)
else:
null_slide(1,delta)
#Braking
if Input.is_action_pressed("brake"):
if velocity > 20:
linear_damp = 2
else:
linear_damp = 5
else:
linear_damp = 0.01
if Input.is_action_pressed("forward"):
if !Input.is_action_pressed("brake"):
apply_central_impulse(Vector2(0,-gear(velocity, hp, acceleration)).rotated(carAngle)*delta*5000)
else:
pass
elif Input.is_action_pressed("backward"):
if !Input.is_action_pressed("brake"):
apply_central_impulse(Vector2(0,(1)).rotated(carAngle)*delta*5000)
else:
pass
#Core physics, stops sliding sideways and make car roll forwards
func null_slide(var strength, var delta):
#strength is how strong you would like the nullify to be
#higher is less sliding/drifting
var movementUnitVector = get_linear_velocity().normalized()#the direction of the velocity
var directionAngle = carAngle + (PI/2.0)#the angle the car is facing(relative to the world)
var directionUnitVector = Vector2(cos(directionAngle),sin(directionAngle)).normalized()#the direction the car is facing
var nullify = directionUnitVector * movementUnitVector.dot(directionUnitVector)
var wheelSlip = (-(movementUnitVector - nullify))*strength
apply_central_impulse(wheelSlip*delta*5000)
#func has_grip(var tractionDelay, var delta):
# var movementUnitVector = get_linear_velocity().normalized()#the direction of the velocity
# var directionAngle = carAngle#the angle the car is facing(relative to the world)
# var directionUnitVector = Vector2(cos(directionAngle),sin(directionAngle)).normalized()#the direction the car is facing
# if velocity > 10:
# if Input.is_action_pressed("grip"):##if pressing shift
# gripDelay = tractionDelay
# elif (gripDelay <= 0 && abs(movementUnitVector.dot(directionUnitVector)) > 0.4):#if not drifting but past steering point
# gripDelay = tractionDelay
# elif gripDelay > 0 && abs(movementUnitVector.dot(directionUnitVector)) > 0.3:#if drifting and past steering point
# gripDelay = tractionDelay
# elif gripDelay > 0:#if at recovery point and drifting
# gripDelay -= delta
# else:
# gripDelay = 0
# return gripDelay
func measure_velocity():
return sqrt(get_linear_velocity().dot(get_linear_velocity()))/12
#determines if the car is driving forward, or backward
func is_forward():
carVector = Vector2(cos(carAngle + PI/2),sin(carAngle + PI/2))
if velVector == Vector2(0,0) || carVector == Vector2(0,0):
return true
if velVector.dot(carVector) <= 0:
return true
else:
return false
func gear(var rpm, var maxPower, var topSpeed):
return max(-pow((rpm/((1000/topSpeed)/sqrt(maxPower)))-sqrt(maxPower),2)+(maxPower+1),0)
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