game: add rat enemy

assets/sprites/small_bat.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://chtjfq3bmonhj"
+path="res://.godot/imported/small_bat.png-8cac10440ad9b69c99d6007471ff8d06.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://assets/sprites/small_bat.png"
+dest_files=["res://.godot/imported/small_bat.png-8cac10440ad9b69c99d6007471ff8d06.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1

scenes/enemies/enemy_base.gd

@@ -6,6 +6,7 @@ extends CharacterBody2D
 @export var default_contact_damage: float = 0.0
 @export var target_distance: float = 6.0
 @export var path_update_interval: float = 1.5
+@export var xp_dropped: float = 5.0
 
 @onready var target_cast: RayCast2D = $TargetCast
 @onready var animation_player: AnimationPlayer = $AnimationPlayer
@@ -97,7 +98,7 @@ func _do_nav_agent_movement():
 func check_contact_damage():
 	if default_contact_damage == 0.0:
 		return
-	if global_position.distance_to(target.global_position) > target_distance:
+	if global_position.distance_to(target.global_position) > target_distance + 2:
 		return
 	deal_contact_damage()
 
@@ -140,7 +141,7 @@ func die():
 
 func drop_xp_orb() -> void:
 	var orb: XPOrb = preload("res://scenes/xp_orb.tscn").instantiate()
-	orb.value = 5
+	orb.value = xp_dropped
 	orb.position = position
 	get_parent().call_deferred("add_child", orb)
 

scenes/enemies/enemy_base.tscn

@@ -12,7 +12,7 @@ shader_parameter/flash_amount = 0.0
 size = Vector2(32, 32)
 
 [sub_resource type="CircleShape2D" id="CircleShape2D_satqt"]
-radius = 6.0
+radius = 4.0
 
 [sub_resource type="Animation" id="Animation_satqt"]
 length = 0.001
@@ -60,7 +60,7 @@ _data = {
 
 [sub_resource type="CircleShape2D" id="CircleShape2D_pkqou"]
 
-[node name="EnemyBase" type="CharacterBody2D"]
+[node name="EnemyBase" type="CharacterBody2D" groups=["damagable", "enemy"]]
 collision_layer = 2
 collision_mask = 3
 script = ExtResource("1_qty17")

scenes/enemies/enemy_bat.gd

@@ -0,0 +1 @@
+extends EnemyBase

scenes/enemies/enemy_bat.gd.uid

@@ -0,0 +1 @@
+uid://bfhmjpjwdh25o

scenes/enemies/enemy_bat.tscn

@@ -0,0 +1,24 @@
+[gd_scene load_steps=4 format=3 uid="uid://du4t4vydra4rm"]
+
+[ext_resource type="PackedScene" uid="uid://b7vq8xspnlyeu" path="res://scenes/enemies/enemy_base.tscn" id="1_4r40l"]
+[ext_resource type="Script" uid="uid://bfhmjpjwdh25o" path="res://scenes/enemies/enemy_bat.gd" id="2_1jj4k"]
+[ext_resource type="Texture2D" uid="uid://chtjfq3bmonhj" path="res://assets/sprites/small_bat.png" id="2_608ut"]
+
+[node name="EnemyBat" instance=ExtResource("1_4r40l")]
+collision_mask = 2
+script = ExtResource("2_1jj4k")
+move_speed = 175.0
+max_health = 6.0
+default_contact_damage = 5.0
+target_distance = 2.0
+xp_dropped = 8.0
+
+[node name="Sprite2D" parent="." index="0"]
+texture = ExtResource("2_608ut")
+
+[node name="TargetCast" parent="." index="2"]
+collision_mask = 0
+collide_with_bodies = false
+
+[node name="ShapeCast2D" parent="." index="6"]
+visible = false

scenes/managers/enemy_manager.gd

@@ -9,6 +9,7 @@ extends Node2D
 @onready var timer: Timer = $Timer
 
 const ENEMY_RAT = preload("res://scenes/enemies/enemy_rat.tscn")
+const ENEMY_BAT = preload("res://scenes/enemies/enemy_bat.tscn")
 
 
 func _ready() -> void:
@@ -21,8 +22,15 @@ func _ready() -> void:
 func _on_timer_timeout() -> void:
 	var enemies = get_tree().get_nodes_in_group(GlobalConst.GROUP_ENEMY)
 	GlobalConst.sig_debug_stats_set.emit("enemy_count", "%s" % len(enemies))
+	var next_enemy: PackedScene
+	match randi() % 2:
+		0:
+			next_enemy = ENEMY_BAT
+		1:
+			next_enemy = ENEMY_RAT
+
 	if len(enemies) < max_enemies:
-		var new_enemy = ENEMY_RAT.instantiate()
+		var new_enemy = next_enemy.instantiate()
 		new_enemy.position = _get_spawn_pos()
 		new_enemy.target = target
 		add_child(new_enemy)