✨ Ebb and flow

scripts/bullet.gd

@@ -1,6 +1,7 @@
 extends CharacterBody2D
 
 @export var damage = 12.0
+@export var knockback = 4
 
 func _physics_process(delta):
 	var collision = move_and_collide(velocity * delta)
@@ -8,6 +9,8 @@ func _physics_process(delta):
 	if collision:
 		var collider = collision.get_collider()
 		if collider is Enemy:
+			var normal = collision.get_normal()
+			collider.velocity = collider.velocity.bounce(normal) * knockback
 			collider.take_damage(damage)
 			queue_free()
 

scripts/enemy.gd

@@ -2,6 +2,8 @@ class_name Enemy
 
 extends CharacterBody2D
 
+signal enemy_defeat
+
 @export var damage = 8.0
 @export var max_health = 20
 
@@ -13,4 +15,5 @@ func _ready():
 func take_damage(amount: float):
 	health -= amount
 	if health <= 0:
+		enemy_defeat.emit()
 		queue_free()

scripts/enemy_farm.gd

@@ -1,11 +1,15 @@
 extends Node2D
 
+signal enemy_defeat
+
 @export var common_parent: Node2D
 @export var path_follow: PathFollow2D
 
 @export var target: PackedScene
 @export var common_target: Node2D
 
+@export var respawn_timer: Timer
+
 func spawn():
 	var instance = target.instantiate()
 	
@@ -18,6 +22,16 @@ func spawn():
 	instance.speed = randi_range(800, 1400)
 	
 	instance.target = common_target
+	instance.connect("enemy_defeat", _on_enemy_defeat)
 
 	# Add into common parent
 	common_parent.add_child(instance)
+
+func _on_wave_finished():
+	respawn_timer.stop()
+
+func _on_wave_started():
+	respawn_timer.start()
+
+func _on_enemy_defeat():
+	enemy_defeat.emit()

scripts/player.gd

@@ -14,6 +14,8 @@ extends CharacterBody2D
 @export var fire_cooldown_duration = 0.2
 @export var fire_cooldown_timer: Timer
 
+@export var statistics: Statistics
+
 func deal_move(delta):
 	var input_direction = Input.get_vector("move_left", "move_right", "move_up", "move_down")
 	velocity = velocity.move_toward(input_direction * speed, speed * delta)
@@ -36,6 +38,7 @@ func deal_weapon_shoot():
 		bullet.global_position = global_position
 		bullet.velocity = direction * weapon_bullet_speed
 		
+		statistics.bullet_shoot += 1
 		fire_cooldown_timer.start(fire_cooldown_duration)
 
 func _on_dash_cooled_down():

scripts/statistics.gd

@@ -0,0 +1,71 @@
+class_name Statistics
+
+extends Node
+
+signal wave_finished
+signal wave_started
+
+var time_started
+var time_survived
+
+var wave_passed: int
+var in_wave_gap: bool
+
+var enemies_defeated: int
+var bullet_shoot: int
+
+@export var wave_gap_duration = 10
+@export var wave_duration = 10
+@export var wave_multiplier = 1.5
+
+@export var wave_timer: Timer
+@export var wave_gap_timer: Timer
+
+func _ready():
+	time_started = Time.get_ticks_msec()
+	time_survived = null
+	
+	wave_passed = 0
+	enemies_defeated = 0
+	bullet_shoot = 0
+	
+	_on_wave_gap_passed()
+
+func _on_game_over():
+	time_survived = get_time_survived()
+
+func get_current_wave():
+	return wave_passed + 1
+
+func get_current_wave_time():
+	if in_wave_gap:
+		return get_current_wave_duration() - $WaveGapTimer.time_left
+	else:
+		return get_current_wave_duration() - $WaveTimer.time_left
+
+func get_current_wave_duration():
+	if in_wave_gap:
+		return wave_gap_duration
+	else:
+		return wave_duration + wave_multiplier * wave_passed
+
+func get_time_survived():
+	if time_survived == null:
+		return Time.get_ticks_msec() - time_started
+	else:
+		return time_survived
+
+func _on_enemy_defeated():
+	enemies_defeated += 1
+
+func _on_wave_passed():
+	wave_passed += 1
+	in_wave_gap = true
+	wave_finished.emit()
+	wave_gap_timer.start(wave_gap_duration)
+
+func _on_wave_gap_passed():
+	in_wave_gap = false
+	wave_started.emit()
+	wave_timer.wait_time = get_current_wave_duration()
+	wave_timer.start()

scripts/tower_health_display.gd

@@ -2,6 +2,6 @@ extends Sprite2D
 
 @export var regeneration_progress = 0.5
 
-func _process(delta):
+func _process(_wdelta):
 	set_modulate(Color(1, 1, 1, regeneration_progress))
 	rotation_degrees += 1

scripts/ui/finish_screen.gd

@@ -0,0 +1,6 @@
+extends Control
+
+@export var stats: Statistics
+
+func _show():
+	visible = true

scripts/ui/stats_overlay.gd

@@ -0,0 +1,25 @@
+extends Control
+
+@export var stats: Statistics
+
+@export var survived_indicator: Label
+
+@export var wave_indicator: Label
+@export var wave_progress: ProgressBar
+
+var wave_stylebox = StyleBoxFlat.new()
+var wave_gap_stylebox = StyleBoxFlat.new()
+
+func _ready():
+	wave_stylebox.bg_color = Color("84ba7a")
+	wave_gap_stylebox.bg_color = Color("89a1e5")
+
+func _process(_delta):
+	survived_indicator.text = "%.2fs" % (stats.get_time_survived() / 1000.0)
+	wave_indicator.text = "%d" % stats.get_current_wave()
+	
+	if stats.in_wave_gap:
+		wave_progress.add_theme_stylebox_override("fill", wave_gap_stylebox)
+	else:
+		wave_progress.add_theme_stylebox_override("fill", wave_stylebox)
+	wave_progress.value = stats.get_current_wave_time() / stats.get_current_wave_duration() * 100