godot-tank-test/tank-base.gd

extends VehicleBody

# Member variables
var shotscene = preload("res://tank-round.tscn")
const STEER_SPEED = .35
const STEER_LIMIT = .4

var steer_angle = 0
var steer_target = 0
var view_sensitivity = 0.1;


func _process(delta):
	if (Input.is_action_pressed("ui_left")):
		steer_target = STEER_LIMIT
		print("left")
	elif (Input.is_action_pressed("ui_right")):
		steer_target = -STEER_LIMIT
		print("right")
	else:
		steer_target = 0
	
	if (Input.is_action_pressed("ui_up")):
		set_engine_force(50)
		print("accel")
	else:
		set_engine_force(0)
	
	if (Input.is_action_pressed("ui_down")):
		#set_brake(1)
		set_engine_force(-50)
		print("decel")
	
	#if (Input.is_action_pressed("driver_break")):
	#	set_brake(1.0)
	#else:
	#	set_brake(0.0)
	
	if (steer_target < steer_angle):
		steer_angle -= STEER_SPEED*delta
		if (steer_target > steer_angle):
			steer_angle = steer_target
	elif (steer_target > steer_angle):
		steer_angle += STEER_SPEED*delta
		if (steer_target < steer_angle):
			steer_angle = steer_target
	
	set_steering(steer_angle)

func _enter_tree():
	#Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED);
	pass

func _ready():
	set_process_input(true)
	
func _input(ie):
	if ie is InputEventMouseMotion:
		var turret = get_node("Turret")
		var cannon = get_node("Turret/Cannon")
		var plus_pitch = view_sensitivity * -ie.relative.y
		var plus_yaw = fmod(view_sensitivity * -ie.relative.x,360)
		var can_rot = cannon.get_rotation()
		can_rot.z -= deg2rad(plus_pitch)
		var can_elev = rad2deg(can_rot.z)
		#if can_elev < 7 and can_elev > -30:
		cannon.set_rotation(can_rot)
		#print(cannon.get_global_transform().get_rotation())
		turret.rotate(Vector3(0,1,0), deg2rad(plus_yaw))
		
	elif ie is InputEventMouseButton:
		if ie.button_index == BUTTON_LEFT and ie.is_pressed():
			var shot = shotscene.instance()
			get_parent().add_child(shot)
			var shot_dir = get_node("Turret/Cannon/Aimpoint").get_global_transform().origin - get_node("Turret/Cannon").get_global_transform().origin
			shot.set_transform(get_node("Turret/Cannon/Aimpoint").get_global_transform())
			shot.set_linear_velocity(shot_dir.normalized() * 100.0)
			#shot.set_linear_velocity(shot.get_rotation().normalized() * 10)
			#shot.connect("body_enter", self, "shot_hit")
			
			
func shot_hit(obj):
	print ("Own shot hit obj: " + obj.get_name())