extends CharacterBody3D

var swampSound = preload("res://sounds/chaseMusic.mp3")

var sirenSound = preload("res://sounds/siren head.mp3")

var sirenActive = false

# -1 = do nothing
# 0 = hunting
# 1 = found
# 2 = run away

const huntModeSpeed = 6
const foundModeSpeed = 4.5
const runAwayModeSpeed = 15

# Get the gravity from the project settings to be synced with RigidBody nodes.
var gravity = ProjectSettings.get_setting("physics/3d/default_gravity")

func _ready():
	visible = false
	Globals.huntMode = -1
	Globals.shrekInitPos = position
	Globals.shrekInitRotation = rotation

func getRandomPlace():
	return Vector2(350*((randf()*2)-1), 350*((randf()*2)-1))


func _physics_process(delta):
	Globals.shrekPos = position
	visible = Globals.huntMode != -1
	if Globals.huntMode == -1: return
	$siren_head_model.visible = sirenActive
	$shrek_model.visible = !sirenActive
	$eyes.visible = !sirenActive
	var x = Globals.playerPos.x - position.x
	var z = Globals.playerPos.z - position.z
	var distance = sqrt(x*x+z*z)
	if Globals.difficulty == 2:
		$eyes.visible = false
	else:
		$eyes/SpotLight3D.light_energy = float(Globals.onionsFound)/float(Globals.onionsToFind-1)
		$eyes/SpotLight3D2.light_energy = $eyes/SpotLight3D.light_energy
	# Add the gravity.
	if not is_on_floor():
		velocity.y -= gravity * delta
	else:
		match Globals.huntMode:
			0:	hunting()
			1:	found()
			2:	runAway()
	move_and_slide()
	Globals.shrekPos = position


func hunting():
	var angle = atan2( Globals.playerPos.x - position.x, Globals.playerPos.z - position.z)
	var x = Globals.playerPos.x - position.x
	var z = Globals.playerPos.z - position.z
	var aggressionSpeed = 17.5 * (Globals.onionsFound/(Globals.onionsToFind-1))
	rotation.y = angle
	velocity.x = (huntModeSpeed+aggressionSpeed)*sin(angle)
	velocity.z = (huntModeSpeed+aggressionSpeed)*cos(angle)
	var distance = sqrt(x*x+z*z)
	if distance <= 30:
		$AudioStreamPlayer3D.stream = swampSound if !sirenActive else sirenSound
		$AudioStreamPlayer3D.play()
		Globals.huntMode = 1
	
	
func found():
	var angle = atan2( Globals.playerPos.x - position.x, Globals.playerPos.z - position.z)
	var x = Globals.playerPos.x - position.x
	var z = Globals.playerPos.z - position.z
	var aggressionSpeed = 0.5 * (Globals.onionsFound/(Globals.onionsToFind-1))
	
	var calcSpeed = foundModeSpeed+aggressionSpeed if !sirenActive else 6.5
	
	rotation.y = angle
	velocity.x = (calcSpeed)*sin(angle)
	velocity.z = (calcSpeed)*cos(angle)
	var distance = sqrt(x*x+z*z)
	if distance >= (35 + (15 * (Globals.onionsFound/(Globals.onionsToFind-1)))) or !$AudioStreamPlayer3D.playing:
		Globals.runTo = getRandomPlace()
		$AudioStreamPlayer3D.stop()
		Globals.huntMode = 2

func runAway():
	var x = Globals.runTo.x - position.x
	var z = Globals.runTo.y - position.z
	var angle = atan2(x, z)
	rotation.y = angle
	velocity.x = runAwayModeSpeed*sin(angle)
	velocity.z = runAwayModeSpeed*cos(angle)
	var distance = sqrt(x*x+z*z)
	if distance <= 10:
		Globals.huntMode = 0
		sirenActive = randf()<(1.0/(30-(20*(Globals.onionsFound/(Globals.onionsToFind-1)))))


func _on_area_3d_body_entered(body):
	if body.is_in_group("player") && Globals.huntMode == 1:
		Globals.gameOver(true)