game: improve enemy-manager

project.godot

@@ -67,6 +67,11 @@ click={
 "events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":1,"position":Vector2(90, 11),"global_position":Vector2(99, 59),"factor":1.0,"button_index":1,"canceled":false,"pressed":true,"double_click":false,"script":null)
 ]
 }
+active={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":32,"key_label":0,"unicode":32,"location":0,"echo":false,"script":null)
+]
+}
 
 [layer_names]
 

scenes/enemies/enemy_rat.tscn

@@ -6,7 +6,6 @@
 
 [node name="EnemyRat" instance=ExtResource("1_o1awd")]
 script = ExtResource("2_sari4")
-max_health = 50.0
 default_contact_damage = 5.0
 
 [node name="Sprite2D" parent="." index="0"]

scenes/main.tscn

@@ -25,8 +25,10 @@ position = Vector2(1057, 798)
 camera = NodePath("../MainCamera")
 main_ui = NodePath("../MainUI")
 
-[node name="EnemyManager" parent="." node_paths=PackedStringArray("target") instance=ExtResource("5_tbgi4")]
+[node name="EnemyManager" parent="." node_paths=PackedStringArray("target", "camera") instance=ExtResource("5_tbgi4")]
+spawn_rate = 1.5
 target = NodePath("../Player")
+camera = NodePath("../MainCamera")
 
 [node name="PickupMagnet" parent="." instance=ExtResource("6_tefeu")]
 position = Vector2(1697, 414)

scenes/managers/enemy_manager.gd

@@ -4,6 +4,7 @@ extends Node2D
 @export var max_enemies: int
 @export var spawn_rate: float
 @export var target: CollisionObject2D
+@export var camera: Camera2D
 
 @onready var timer: Timer = $Timer
 
@@ -22,11 +23,61 @@ func _on_timer_timeout() -> void:
 	GlobalConst.sig_debug_stats_set.emit("enemy_count", "%s" % len(enemies))
 	if len(enemies) < max_enemies:
 		var new_enemy = ENEMY_RAT.instantiate()
-		new_enemy.position = target.position + Vector2(50, 50)
+		new_enemy.position = _get_spawn_pos()
 		new_enemy.target = target
 		add_child(new_enemy)
 
 
+func _get_spawn_pos() -> Vector2:
+	var rect = _get_camera_rect()
+	var side = randi() % 4
+	var margin = 50
+	var pos: Vector2
+
+	match side:
+		0:  # Top
+			pos = Vector2(
+				randf_range(rect.position.x, rect.position.x + rect.size.x),
+				rect.position.y - margin
+			)
+		1:  # Bottom
+			pos = Vector2(
+				randf_range(rect.position.x, rect.position.x + rect.size.x),
+				rect.position.y + rect.size.y + margin
+			)
+		2:  # Left
+			pos = Vector2(
+				rect.position.x - margin,
+				randf_range(rect.position.y, rect.position.y + rect.size.y)
+			)
+		3:  # Right
+			pos = Vector2(
+				rect.position.x + rect.size.x + margin,
+				randf_range(rect.position.y, rect.position.y + rect.size.y)
+			)
+	if !_is_pos_valid(pos):
+		pos = _get_spawn_pos()
+	return pos
+
+
+func _is_pos_valid(pos: Vector2) -> bool:
+	var space = get_world_2d().direct_space_state
+	var parameters = PhysicsPointQueryParameters2D.new()
+	parameters.collide_with_areas = false
+	parameters.collide_with_bodies = true
+	parameters.collision_mask = 1
+	parameters.position = pos
+	var result = space.intersect_point(parameters, 1)
+	return result.size() == 0
+
+
+func _get_camera_rect() -> Rect2:
+	var viewport_size = camera.get_viewport_rect().size
+	var half_size = viewport_size * 0.5
+	var top_left = camera.global_position - half_size
+	return Rect2(top_left, viewport_size)
+
+
 func _on_stop_spawning(val: bool):
 	if val:
 		timer.stop()

scenes/player.gd

@@ -1,9 +1,13 @@
 class_name Player
 extends CharacterBody2D
 
+const WEAPON_SWORD = preload("res://scenes/weapons/weapon_sword.tscn")
+
 @export var camera: Camera2D
 @export var main_ui: MainUI
 
+var weapon: WeaponBase
+
 @onready var sprite_2d: Sprite2D = $Sprite2D
 
 var player_stats: PlayerStats = PlayerStats.new()
@@ -13,10 +17,18 @@ var death_anim_done: bool = false
 var god_mode: bool = false
 
 
+func _unhandled_input(event: InputEvent) -> void:
+	if event.is_action_pressed("active"):
+		weapon.do_active()
+
+
 func _ready() -> void:
 	camera.position = global_position
 	main_ui.player_ui.update_hp()
 	GlobalConst.sig_debug_god_mode.connect(toggle_god_mode)
+	if not weapon:
+		weapon = WEAPON_SWORD.instantiate()
+		add_child(weapon)
 
 
 func _physics_process(delta: float) -> void:

scenes/player.tscn

@@ -1,8 +1,7 @@
-[gd_scene load_steps=6 format=3 uid="uid://ca2so8fm3q8fe"]
+[gd_scene load_steps=5 format=3 uid="uid://ca2so8fm3q8fe"]
 
 [ext_resource type="Texture2D" uid="uid://5x5wimok8uw2" path="res://assets/sprites/roguelikeChar_transparent.png" id="1_3vyb7"]
 [ext_resource type="Script" uid="uid://cvqaxckx4num3" path="res://scenes/player.gd" id="1_g2els"]
-[ext_resource type="PackedScene" uid="uid://dfikvj27k01tu" path="res://scenes/weapons/weapon_sword.tscn" id="3_qhqgy"]
 
 [sub_resource type="CircleShape2D" id="CircleShape2D_3vyb7"]
 radius = 8.0
@@ -30,6 +29,4 @@ monitorable = false
 [node name="CollisionShape2D" type="CollisionShape2D" parent="PickupArea"]
 shape = SubResource("CircleShape2D_qhqgy")
 
-[node name="WeaponSword" parent="." instance=ExtResource("3_qhqgy")]
-
 [connection signal="area_entered" from="PickupArea" to="." method="_on_pickup_area_area_entered"]

scenes/weapons/weapon_base.gd

@@ -7,6 +7,8 @@ extends Node2D
 @export var attack_duration: float
 @export var attack_range: float
 
+@onready var active_cd_timer: Timer = $ActiveCDTimer
+
 
 func _on_attack_cd_timer_timeout() -> void:
 	do_attack()
@@ -16,6 +18,17 @@ func do_attack() -> void:
 	push_error("%s does not implement do_attack" % self)
 
 
+func do_active() -> void:
+	if not active_cd_timer.is_stopped():
+		return
+	active_cd_timer.start()
+	_do_active()
+
+
+func _do_active() -> void:
+	push_error("%s does not implement do_active" % self)
+
+
 func find_target_in_radius() -> EnemyBase:
 	var space_state: PhysicsDirectSpaceState2D = get_world_2d().direct_space_state
 	var shape := CircleShape2D.new()

scenes/weapons/weapon_base.tscn

@@ -8,4 +8,7 @@ script = ExtResource("1_v4xn6")
 [node name="AttackCDTimer" type="Timer" parent="."]
 autostart = true
 
+[node name="ActiveCDTimer" type="Timer" parent="."]
+one_shot = true
+
 [connection signal="timeout" from="AttackCDTimer" to="." method="_on_attack_cd_timer_timeout"]

scenes/weapons/weapon_sword.gd

@@ -23,20 +23,34 @@ func do_attack() -> void:
 		return
 
 	var projectile = WEAPON_SWORD_PROJECTILE.instantiate()
-	projectile.damage = attack_damage
 	projectile.target = target
 	projectile.on_hit_sig = projectile_hit
 	add_child(projectile)
 
 
-func deal_damage(enemy: EnemyBase):
+func _do_active() -> void:
+	var radius = targeting_range_shape.shape.radius
+	var count = 15
+	for i in count:
+		var angle = TAU * float(i) / float(count)
+		var target_pos = Vector2(cos(angle), sin(angle)) * radius
+		var new_target := Marker2D.new()
+		new_target.global_position = global_position + target_pos
+		var projectile = WEAPON_SWORD_PROJECTILE.instantiate()
+		projectile.damage_mult = 3.0
+		projectile.target = new_target
+		projectile.on_hit_sig = projectile_hit
+		add_child(projectile)
+
+
+func deal_damage(enemy: EnemyBase, damage_mult: float):
 	var crit_chance = _player.player_stats.get_final("crit_chance", _player.modifiers)
-	var damage_dealt = attack_damage
+	var damage_dealt = attack_damage * damage_mult
 	var is_crit = randf() >= 1 - crit_chance
 	if is_crit:
 		damage_dealt *= _player.player_stats.get_final("crit_multiplier", _player.modifiers)
 	enemy.take_damage(damage_dealt, is_crit)
 
 
-func _on_projectile_hit(projectile: WeaponSwordProjectile, enemy: EnemyBase):
-	deal_damage(enemy)
+func _on_projectile_hit(projectile: WeaponSwordProjectile, enemy: EnemyBase, damage_mult: float):
+	deal_damage(enemy, damage_mult)

scenes/weapons/weapon_sword_projectile.gd

@@ -4,7 +4,7 @@ extends Node2D
 @export var speed: float = 500.0
 @export var range: float = 200.0
 @export var target: Node2D
-@export var damage: float
+@export var damage_mult: float = 1.0
 @export var on_hit_sig: Signal
 
 var _direction: Vector2
@@ -36,5 +36,5 @@ func _physics_process(delta: float) -> void:
 func _on_area_2d_body_entered(body: Node2D) -> void:
 	if body in _already_hit:
 		return
-	on_hit_sig.emit(self, body)
+	on_hit_sig.emit(self, body, damage_mult)
 	_already_hit.append(body)