part 08 difficulty curve

Main.gd

@@ -31,10 +31,10 @@ func spawn_circle(_position=null):
 	var c = Circle.instance()
 	if !_position:
 		var x = rand_range(-150, 150)
-		var y = rand_range(-500, -400)
+		var y = rand_range(-550, -450)
 		_position = player.target.position + Vector2(x, y)
 	add_child(c)
-	c.init(_position)
+	c.init(_position, level)
 
 func _on_Jumper_captured(object):
 	$Camera2D.position = object.position

ProgressionTester.gd

@@ -0,0 +1,47 @@
+extends Node2D
+
+var Circle = preload("res://objects/Circle.tscn")
+var font = preload("res://assets/fonts/xolonium_64.tres")
+var level
+var last_circle_position
+var level_markers = []
+
+func _ready():
+	randomize()
+	last_circle_position = $Camera2D.position
+	level = 0
+	for i in 100:
+		if i % 5 == 0:
+			level += 1
+			level_markers.append(last_circle_position)
+		spawn_circle()
+	update()
+
+func _process(delta):
+	if Input.is_action_pressed("ui_up"):
+		$Camera2D.position.y -= 15
+	if Input.is_action_pressed("ui_down"):
+		$Camera2D.position.y += 15
+	if Input.is_action_pressed("ui_left"):
+		$Camera2D.position.x -= 15
+	if Input.is_action_pressed("ui_right"):
+		$Camera2D.position.x += 15
+
+func spawn_circle(_position=null):
+	var c = Circle.instance()
+	if !_position:
+		var x = rand_range(-150, 150)
+		var y = rand_range(-500, -400)
+		_position = last_circle_position + Vector2(x, y)
+	add_child(c)
+	c.init(_position, level)
+	last_circle_position = _position
+
+func _draw():
+	var l = 1
+	for pos in level_markers:
+		var s = Vector2(pos.x-480, pos.y-200)
+		var e = Vector2(pos.x-80, pos.y-200)
+		draw_line(s, e, Color(1, 1, 1), 15)
+		draw_string(font, s - Vector2(0, 50), str(l), Color(1, 1, 1))
+		l += 1

objects/Circle.gd

@@ -8,17 +8,24 @@ enum MODES {STATIC, LIMITED}
 var radius = 100
 var rotation_speed = PI
 var mode = MODES.STATIC
-var move_range = 100
-var move_speed = 1.0
+var move_range = 0
+var move_speed = 2.0
 var num_orbits = 3
 var current_orbits = 0
 var orbit_start = null
 var jumper = null
 
-func init(_position, _radius=radius, _mode=MODES.LIMITED):
+func init(_position, level=1):
+	var _mode = settings.rand_weighted([10, level-1])
 	set_mode(_mode)
 	position = _position
-	radius = _radius
+	var move_chance = clamp(level-10, 0, 9) / 10.0
+	if randf() < move_chance:
+		move_range = max(25, 100 * rand_range(0.75, 1.25) * move_chance) * pow(-1, randi() % 2)
+		move_speed = max(2.5 - ceil(level/5) * 0.25, 0.75)
+	var small_chance = min(0.9, max(0, (level-10) / 20.0))
+	if randf() < small_chance:
+		radius = max(50, radius - level * rand_range(0.75, 1.25))
 	$Sprite.material = $Sprite.material.duplicate()
 	$SpriteEffect.material = $Sprite.material
 	$CollisionShape2D.shape = $CollisionShape2D.shape.duplicate()

objects/Jumper.gd

@@ -12,8 +12,10 @@ var trail_length = 25
 
 func _ready():
 	$Sprite.material.set_shader_param("color", settings.theme["player_body"])
-	$Trail/Points.default_color = settings.theme["player_trail"]
-
+	var trail_color = settings.theme["player_trail"]
+	trail.gradient.set_color(1, trail_color)
+	trail_color.a = 0
+	trail.gradient.set_color(0, trail_color)
 
 func _unhandled_input(event):
 	if target and event is InputEventScreenTouch and event.pressed:

settings.gd

@@ -33,3 +33,21 @@ var color_schemes = {
 }
 
 var theme = color_schemes["NEON1"]
+
+static func rand_weighted(weights):
+	var sum = 0
+	for weight in weights:
+		sum += weight
+	var num = rand_range(0, sum)
+	for i in weights.size():
+		if num < weights[i]:
+			return i
+		num -= weights[i]
+
+
+
+
+
+
+
+

tests/ProgressionTester.tscn

@@ -0,0 +1,11 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://ProgressionTester.gd" type="Script" id=1]
+
+[node name="ProgressionTester" type="Node2D"]
+script = ExtResource( 1 )
+
+[node name="Camera2D" type="Camera2D" parent="."]
+position = Vector2( 240, 428.122 )
+current = true
+zoom = Vector2( 4, 4 )