9 files changed, 353 insertions, 0 deletions
diff --git a/Racing-Game/4WheelCar/Wheels/BackWheel.gd b/Racing-Game/4WheelCar/Wheels/BackWheel.gd
new file mode 100644
index 0000000..88df113
--- /dev/null
+++ b/Racing-Game/4WheelCar/Wheels/BackWheel.gd
@@ -0,0 +1,50 @@
+extends "res://4WheelCar/Wheels/Wheel.gd"
+
+#Accelerating
+var hp = 4.0
+var acceleration = 5
+
+var gripDelay = 0
+
+func _ready():
+	pass
+
+func _process(delta):
+	#Variable Setup
+	#---null_slide vars
+	nullStrength = 0
+	carAngle = get_node("../../../CarBody").get_transform().get_rotation()
+	velVector = get_node("../../../CarBody").get_linear_velocity()
+	velocity = measure_velocity()
+	#---
+	set_rotation(carAngle)
+
+	isSkid = Input.is_action_pressed("grip")
+	
+	if Input.is_action_pressed("grip") || Input.is_action_pressed("brake"):
+		nullStrength += max(5,velocity/7)
+	else:
+		nullStrength += 1
+	
+	#Braking
+	setBrake(0)
+	null_slide(nullStrength, delta)
+	
+	
+	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
+
+func measure_velocity():
+	return sqrt(get_linear_velocity().dot(get_linear_velocity()))/12
+
+
+func gear(var rpm, var maxPower, var topSpeed):
+	return max(-pow((rpm/((1000/topSpeed)/sqrt(maxPower)))-sqrt(maxPower),2)+(maxPower+1),0)
diff --git a/Racing-Game/4WheelCar/Wheels/BackWheel.tscn b/Racing-Game/4WheelCar/Wheels/BackWheel.tscn
new file mode 100644
index 0000000..c09eaca
--- /dev/null
+++ b/Racing-Game/4WheelCar/Wheels/BackWheel.tscn
@@ -0,0 +1,29 @@
+[gd_scene load_steps=5 format=2]
+
+[ext_resource path="res://4WheelCar/Wheels/Skid/SkidController.gd" type="Script" id=1]
+[ext_resource path="res://4WheelCar/Wheels/BackWheel.gd" type="Script" id=2]
+[ext_resource path="res://Art(non-orig)/crosshair(isorig).png" type="Texture" id=3]
+
+
+[sub_resource type="RectangleShape2D" id=1]
+extents = Vector2( 7.07375, 14.3787 )
+
+[node name="BackWheel" type="RigidBody2D"]
+z_index = 2
+mass = 15.0
+linear_damp = 0.4
+angular_damp = 7.04
+script = ExtResource( 2 )
+__meta__ = {
+"_edit_group_": true
+}
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource( 1 )
+disabled = true
+
+[node name="SkidController2" type="Node" parent="."]
+script = ExtResource( 1 )
+
+[node name="Sprite" type="Sprite" parent="."]
+texture = ExtResource( 3 )
diff --git a/Racing-Game/4WheelCar/Wheels/FrontWheel.gd b/Racing-Game/4WheelCar/Wheels/FrontWheel.gd
new file mode 100644
index 0000000..7a05522
--- /dev/null
+++ b/Racing-Game/4WheelCar/Wheels/FrontWheel.gd
@@ -0,0 +1,84 @@
+extends "res://4WheelCar/Wheels/Wheel.gd"
+
+#Reduces steering strength when braking
+var steerDamp = 1
+
+#Steering Curve Vars
+var steerSplitA = 20
+var steerSplitB = 40
+var steerHeight = 2.6
+var steerLimit = 73
+var steerMinimum = 1
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta):
+	#Variable Update
+	#---null_slide vars
+	nullStrength = 0
+	velocity = measure_velocity()
+	velVector = get_node("../../../CarBody").get_linear_velocity()
+	carAngle = get_node("../../../CarBody").get_transform().get_rotation()
+	#---Steering Vars
+	velAngle = atan2(velVector.y,velVector.x)
+	isForward = is_forward()
+	#---
+	set_rotation(carAngle)
+	
+	isSkid = Input.is_action_pressed("grip")
+	
+	#Determines if drifting
+	if Input.is_action_pressed("grip") || Input.is_action_pressed("brake"):
+		nullStrength += max(5,velocity/7)
+	else:
+		nullStrength += 1
+	
+	#Braking
+	setBrake(0)
+	null_slide(nullStrength,delta)
+	
+	#Steering
+	if Input.is_action_pressed("steer_left"):
+		apply_central_impulse(steerDamp*Vector2(0,steer_curve(steerSplitA, steerSplitB, steerHeight, steerLimit,steerMinimum)).rotated(steer_angle())*delta*5000)
+	if Input.is_action_pressed("steer_right"):
+		apply_central_impulse(steerDamp*Vector2(0,-steer_curve(steerSplitA, steerSplitB, steerHeight, steerLimit,steerMinimum)).rotated(steer_angle())*delta*5000)
+
+#returns the angle the car is facing, relative to the direction it is moving
+func steer_angle():
+	if isForward:
+		return carAngle + (PI/2.0)
+	else:
+		return carAngle - (PI/2.0)
+
+#Determines strength of steering as a function of the speed
+func steer_curve(var splitA, splitB, var height, var limit, var minimum):
+	#Rules:
+	# splitA < splitB < limit
+	# height > 0, limit >= 0
+	# ---
+	#Desmos: SteerCurve
+	#Link: https://www.desmos.com/calculator/jkrd8zzoj9
+	# splitA = a
+	# splitB = b
+	# height = h
+	# limit = f
+	#note: minimum is not in the graph, it is simply the minimum y value you want when x > splitB
+	# ---
+	if(velocity >= splitB):
+		return max((-pow((velocity-splitB)/((limit-splitB)/sqrt(height)),2)+height)*abs(cos(abs(velAngle-carAngle)+PI/2)),minimum)
+	elif velocity >= splitA:
+		return height
+	else:
+		return max((-pow((velocity/(splitA/sqrt(height)))-sqrt(height),2)+height)*abs(cos(abs(velAngle-carAngle)+PI/2)),0)
+
+func is_forward():
+	var 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
diff --git a/Racing-Game/4WheelCar/Wheels/FrontWheel.tscn b/Racing-Game/4WheelCar/Wheels/FrontWheel.tscn
new file mode 100644
index 0000000..25644a6
--- /dev/null
+++ b/Racing-Game/4WheelCar/Wheels/FrontWheel.tscn
@@ -0,0 +1,29 @@
+[gd_scene load_steps=5 format=2]
+
+[ext_resource path="res://4WheelCar/Wheels/Skid/SkidController.gd" type="Script" id=1]
+[ext_resource path="res://4WheelCar/Wheels/FrontWheel.gd" type="Script" id=2]
+[ext_resource path="res://Art(non-orig)/crosshair(isorig).png" type="Texture" id=3]
+
+
+[sub_resource type="RectangleShape2D" id=1]
+extents = Vector2( 6.93714, 14.1584 )
+
+[node name="FrontWheel" type="RigidBody2D"]
+z_index = 2
+mass = 15.0
+linear_damp = 0.4
+angular_damp = 7.04
+script = ExtResource( 2 )
+__meta__ = {
+"_edit_group_": true
+}
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource( 1 )
+disabled = true
+
+[node name="SkidController4" type="Node" parent="."]
+script = ExtResource( 1 )
+
+[node name="Sprite" type="Sprite" parent="."]
+texture = ExtResource( 3 )
diff --git a/Racing-Game/4WheelCar/Wheels/Skid/SkidController.gd b/Racing-Game/4WheelCar/Wheels/Skid/SkidController.gd
new file mode 100644
index 0000000..df1e054
--- /dev/null
+++ b/Racing-Game/4WheelCar/Wheels/Skid/SkidController.gd
@@ -0,0 +1,36 @@
+extends Node
+
+# Declare member variables here. Examples:
+# var a = 2
+# var b = "text"
+var skidSwitch = false # Is the wheel currantly skidding?
+var skidFile # Stores the skid file
+var skidRecent # Holds the most recent skidmark
+
+var deleteme = 0;
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	skidFile = load("res://4WheelCar/Wheels/Skid/Skidmark.tscn")
+	skidRecent = skidFile.instance()
+	add_child(skidRecent)
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(_delta):
+	if(skidSwitch && get_parent().isSkid):#if controller believes car is skidding and the wheel is skidding
+		#ignore the status and let the skid keep drawing
+		pass
+	elif(!skidSwitch && get_parent().isSkid):#controller doesnt skid, but wheel is supposed to be skidding
+		# create new skidding child, and set skid to true
+		skidSwitch = true
+		skidFile = load("res://4WheelCar/Wheels/Skid/Skidmark.tscn")
+		skidRecent = skidFile.instance()
+		add_child(skidRecent)
+		#set to run
+		pass
+	elif(!get_parent().isSkid):
+		#stop child from skidding and store
+		skidRecent.skidDraw = false
+		skidSwitch = false
+		pass
+	
diff --git a/Racing-Game/4WheelCar/Wheels/Skid/Skidmark.tscn b/Racing-Game/4WheelCar/Wheels/Skid/Skidmark.tscn
new file mode 100644
index 0000000..865add0
--- /dev/null
+++ b/Racing-Game/4WheelCar/Wheels/Skid/Skidmark.tscn
@@ -0,0 +1,12 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://4WheelCar/Wheels/Skid/Skidmarks.gd" type="Script" id=1]
+[ext_resource path="res://Art(non-orig)/PNG/Objects/skidmark_short_1.png" type="Texture" id=2]
+
+
+[node name="Skidmark" type="Line2D"]
+position = Vector2( -21.2326, -38.4176 )
+default_color = Color( 0.4, 0.501961, 1, 1 )
+texture = ExtResource( 2 )
+texture_mode = 192263440
+script = ExtResource( 1 )
diff --git a/Racing-Game/4WheelCar/Wheels/Skid/Skidmarks.gd b/Racing-Game/4WheelCar/Wheels/Skid/Skidmarks.gd
new file mode 100644
index 0000000..07bf622
--- /dev/null
+++ b/Racing-Game/4WheelCar/Wheels/Skid/Skidmarks.gd
@@ -0,0 +1,15 @@
+extends Line2D
+
+var skidDraw = true
+var wheel
+var carBody
+
+func _ready():
+	wheel = get_parent().get_parent()
+	carBody = get_parent().get_parent().get_parent().get_parent()
+
+func _process(_delta):
+	global_position = Vector2(0,0)
+	global_rotation = 0
+	if(skidDraw):
+		add_point(wheel.get_global_position())
diff --git a/Racing-Game/4WheelCar/Wheels/Wheel.gd b/Racing-Game/4WheelCar/Wheels/Wheel.gd
new file mode 100644
index 0000000..49024fb
--- /dev/null
+++ b/Racing-Game/4WheelCar/Wheels/Wheel.gd
@@ -0,0 +1,63 @@
+extends RigidBody2D
+
+var velocity #How fast car is moving
+var velVector #What direction the car is moving
+var velUnitVector #Direction vector, but in a single unit(no magnitude)
+var velAngle #The angle of the velocity(relative to world)
+var carAngle #The angle to car is facing(relative to world)
+var nullStrength #sums up all sources of null to here
+var isSkid = false #this one is used when user presses shift. Initially called in this function
+
+#Skidmarks on floor
+
+#var gripDelay = 0
+
+var wheelSlip = Vector2(0,0)
+
+var isForward = true
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(_delta):
+	pass
+
+func initVars(dataArray):
+#	#---Creating and attaching pinjoint to wheel
+	var tempA = PinJoint2D.new()
+	tempA.set_position(Vector2(dataArray[0],dataArray[1]))
+	tempA.set_node_a(get_path())
+	tempA.set_node_b(get_parent().get_parent().get_path())
+	tempA.softness = 0
+	tempA.bias = 0
+	tempA.disable_collision = true
+	get_parent().add_child(tempA)
+#	#---
+	pass
+
+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)
+	wheelSlip = (-(movementUnitVector - nullify))*strength
+	apply_central_impulse(wheelSlip*delta*5000)
+
+#checks if the car is braking, and applies brake physics
+func setBrake(var strength):
+	#Braking
+	if Input.is_action_pressed("brake"):
+		if velocity > 20:
+			linear_damp = 3
+		else:
+			linear_damp = 6
+	else:
+		linear_damp = 0.01
+
+
+func measure_velocity():
+		return floor(sqrt(get_linear_velocity().dot(get_linear_velocity()))/12)
diff --git a/Racing-Game/4WheelCar/Wheels/WheelCreation.gd b/Racing-Game/4WheelCar/Wheels/WheelCreation.gd
new file mode 100644
index 0000000..db09f4b
--- /dev/null
+++ b/Racing-Game/4WheelCar/Wheels/WheelCreation.gd
@@ -0,0 +1,35 @@
+extends Node
+
+
+# This script creates and attaches all the wheels. Depending on the variables
+# given to this script, it can generate different type of vehicles
+
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	createWheel("front", [17,-27])
+	createWheel("front", [-17,-27])
+	createWheel("back", [20,36])
+	createWheel("back", [-20,36])
+	pass # Replace with function body.
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+#func _process(delta):
+#	pass
+
+func createWheel(type,dataArray):
+	if(type == "front"):
+		var wheeltemp_resource = load("res://4WheelCar/Wheels/FrontWheel.tscn")
+		var wheeltemp = wheeltemp_resource.instance()
+		wheeltemp.set_position(Vector2(dataArray[0],dataArray[1]))
+		add_child(wheeltemp)
+		wheeltemp.initVars(dataArray)
+		
+#		add_child(tempA)
+	elif(type == "back"):
+		var wheeltemp_resource = load("res://4WheelCar/Wheels/BackWheel.tscn")
+		var wheeltemp = wheeltemp_resource.instance()
+		wheeltemp.set_position(Vector2(dataArray[0],dataArray[1]))
+		add_child(wheeltemp)
+		wheeltemp.initVars(dataArray)