game: add base enemy and rat

2025-08-20 19:32:21 +02:00
parent 4a900e99bd
commit 7136b07de5
10 changed files with 284 additions and 9 deletions
--- a/scenes/enemies/enemy_base.gd
+++ b/scenes/enemies/enemy_base.gd
@@ -0,0 +1,144 @@
+class_name EnemyBase
+extends CharacterBody2D
+
+@export var move_speed: float = 100
+@export var max_health: float = 10.0
+@export var default_contact_damage: float = 0.0
+@export var target_distance: float = 6.0
+@export var path_update_interval: float = 0.5
+
+@onready var target_cast: RayCast2D = $TargetCast
+@onready var animation_player: AnimationPlayer = $AnimationPlayer
+@onready var contact_damage_cd: Timer = $ContactDamageCD
+@onready var nav_agent: NavigationAgent2D = $NavigationAgent2D
+@onready var collision_shape_2d: CollisionShape2D = $CollisionShape2D
+@onready var shape_cast_2d: ShapeCast2D = $ShapeCast2D
+
+var player: Player
+var target: Node2D
+var god_mode: bool = false
+var is_dead: bool = false
+var health: float
+
+var _path_update_timer: float = 0.0
+
+
+func _ready() -> void:
+	health = max_health
+	shape_cast_2d.shape.radius = collision_shape_2d.shape.radius
+	shape_cast_2d.enabled = false
+	_find_player()
+
+
+func _find_player():
+	if not player:
+		player = get_tree().get_first_node_in_group(GlobalConst.GROUP_PLAYER)
+		target = player
+
+
+func _physics_process(delta: float) -> void:
+	if not target:
+		return
+	do_movement(delta)
+	check_contact_damage()
+
+
+func do_movement(delta: float) -> void:
+	if not target:
+		return
+	if global_position.distance_to(target.global_position) < target_distance:
+		return
+	_path_update_timer -= delta
+	if _has_direct_path():
+		shape_cast_2d.enabled = false
+		_do_simple_movement()
+	else:
+		_do_nav_agent_movement()
+
+
+func _has_direct_path():
+	target_cast.target_position = to_local(target.global_position)
+	target_cast.enabled = true
+	return not target_cast.is_colliding()
+
+
+func _do_simple_movement():
+	var direction = global_position.direction_to(target.global_position)
+	var distance = global_position.distance_to(target.global_position)
+	if distance > 4:
+		velocity = direction * move_speed
+		move_and_slide()
+
+
+func _do_nav_agent_movement():
+	if _path_update_timer <= 0.0:
+		_path_update_timer = path_update_interval
+		nav_agent.target_position = target.global_position
+
+	if nav_agent.is_navigation_finished():
+		return
+	var next_point = nav_agent.get_next_path_position()
+	var direction = (next_point - global_position).normalized()
+	shape_cast_2d.target_position = to_local(next_point)
+	shape_cast_2d.enabled = true
+	if shape_cast_2d.is_colliding():
+		direction = direction.bounce(shape_cast_2d.get_collision_normal(0)).normalized()
+
+	velocity = direction * move_speed
+	move_and_slide()
+
+
+func check_contact_damage():
+	if default_contact_damage == 0.0:
+		return
+	if global_position.distance_to(target.global_position) > target_distance:
+		return
+	deal_contact_damage()
+
+
+func deal_contact_damage():
+	if target.is_in_group("damagable"):
+		if contact_damage_cd.is_stopped():
+			target.take_damage(default_contact_damage)
+			contact_damage_cd.start()
+
+
+func take_damage(value: float, is_crit: bool = false):
+	if god_mode:
+		return
+	health -= value
+	var dm = preload("res://scenes/damage_numbers.tscn").instantiate()
+	dm.damage_taken = value
+	dm.critical_damage = is_crit
+	animation_player.play("generic_anims/take_damage")
+	add_child(dm)
+	if health <= 0:
+		die()
+
+
+func cheer():
+	target_distance = 2
+	if not animation_player.is_playing():
+		animation_player.play("generic_anims/cheer")
+
+
+func die():
+	if is_dead:
+		return
+	is_dead = true
+	drop_xp_orb()
+	target = null
+	velocity = Vector2.ZERO
+	animation_player.play("generic_anims/die")
+
+
+func drop_xp_orb() -> void:
+	var orb: XPOrb = preload("res://scenes/xp_orb.tscn").instantiate()
+	orb.value = 5
+	orb.position = position
+	get_parent().add_child(orb)
+
+
+func _on_animation_player_animation_finished(anim_name: StringName) -> void:
+	if is_dead:
+		queue_free()
--- a/scenes/enemies/enemy_base.gd.uid
+++ b/scenes/enemies/enemy_base.gd.uid
@@ -0,0 +1 @@
+uid://dxn17u7ltuibw
--- a/scenes/enemies/enemy_base.tscn
+++ b/scenes/enemies/enemy_base.tscn
@@ -0,0 +1,75 @@
+[gd_scene load_steps=8 format=3 uid="uid://b7vq8xspnlyeu"]
+
+[ext_resource type="Script" uid="uid://dxn17u7ltuibw" path="res://scenes/enemies/enemy_base.gd" id="1_qty17"]
+[ext_resource type="AnimationLibrary" uid="uid://dos4y853hq1gu" path="res://animation/generic_anims.res" id="2_pkqou"]
+
+[sub_resource type="PlaceholderTexture2D" id="PlaceholderTexture2D_pkqou"]
+size = Vector2(32, 32)
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_satqt"]
+radius = 6.0
+
+[sub_resource type="Animation" id="Animation_satqt"]
+length = 0.001
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:position")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 0,
+"values": [Vector2(0, 0)]
+}
+tracks/1/type = "value"
+tracks/1/imported = false
+tracks/1/enabled = true
+tracks/1/path = NodePath("Sprite2D:modulate")
+tracks/1/interp = 1
+tracks/1/loop_wrap = true
+tracks/1/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 0,
+"values": [Color(1, 1, 1, 1)]
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_qa0nx"]
+_data = {
+&"RESET": SubResource("Animation_satqt")
+}
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_pkqou"]
+
+[node name="EnemyBase" type="CharacterBody2D"]
+collision_layer = 2
+collision_mask = 3
+script = ExtResource("1_qty17")
+
+[node name="Sprite2D" type="Sprite2D" parent="."]
+texture = SubResource("PlaceholderTexture2D_pkqou")
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource("CircleShape2D_satqt")
+
+[node name="TargetCast" type="RayCast2D" parent="." groups=["damagable", "enemy"]]
+enabled = false
+collision_mask = 3
+
+[node name="AnimationPlayer" type="AnimationPlayer" parent="."]
+libraries = {
+&"": SubResource("AnimationLibrary_qa0nx"),
+&"generic_anims": ExtResource("2_pkqou")
+}
+
+[node name="ContactDamageCD" type="Timer" parent="."]
+wait_time = 0.5
+
+[node name="NavigationAgent2D" type="NavigationAgent2D" parent="."]
+
+[node name="ShapeCast2D" type="ShapeCast2D" parent="."]
+shape = SubResource("CircleShape2D_pkqou")
+
+[connection signal="animation_finished" from="AnimationPlayer" to="." method="_on_animation_player_animation_finished"]
--- a/scenes/enemies/enemy_rat.gd
+++ b/scenes/enemies/enemy_rat.gd
@@ -0,0 +1 @@
+extends EnemyBase
--- a/scenes/enemies/enemy_rat.gd.uid
+++ b/scenes/enemies/enemy_rat.gd.uid
@@ -0,0 +1 @@
+uid://ddvxp8eada0mw
--- a/scenes/enemies/enemy_rat.tscn
+++ b/scenes/enemies/enemy_rat.tscn
@@ -0,0 +1,13 @@
+[gd_scene load_steps=4 format=3 uid="uid://c7jaqltfjhn5n"]
+
+[ext_resource type="PackedScene" uid="uid://b7vq8xspnlyeu" path="res://scenes/enemies/enemy_base.tscn" id="1_o1awd"]
+[ext_resource type="Texture2D" uid="uid://in5id1p5bxux" path="res://assets/sprites/rat_small.png" id="2_gscll"]
+[ext_resource type="Script" uid="uid://ddvxp8eada0mw" path="res://scenes/enemies/enemy_rat.gd" id="2_sari4"]
+
+[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"]
+texture = ExtResource("2_gscll")
--- a/scenes/managers/enemy_manager.gd
+++ b/scenes/managers/enemy_manager.gd
@@ -7,7 +7,7 @@ extends Node2D

@onready var timer: Timer = $Timer

-var enemy_scene = preload("res://scenes/enemies/enemy.tscn")
+const ENEMY_RAT = preload("res://scenes/enemies/enemy_rat.tscn")


 func _ready() -> void:
@@ -20,7 +20,7 @@ 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))
 	if len(enemies) < max_enemies:
-		var new_enemy = enemy_scene.instantiate()
+		var new_enemy = ENEMY_RAT.instantiate()
 		new_enemy.position = target.position + Vector2(50, 50)
 		new_enemy.target = target
 		add_child(new_enemy)
--- a/scenes/player.gd
+++ b/scenes/player.gd
@@ -5,6 +5,7 @@ extends CharacterBody2D
@export var main_ui: MainUI

@onready var sprite_2d: Sprite2D = $Sprite2D
+@onready var attack_sword: Node2D = $AttackSword

 var player_stats: PlayerStats = PlayerStats.new()
 var modifiers: Array[PlayerStatsModifier] = []
@@ -59,7 +60,8 @@ func take_damage(value: float) -> void:
 func die():
 	dead = true
 	remove_from_group("damagable")
-	get_tree().call_group("enemy", "cheer_anim")
+	get_tree().call_group("enemy", "cheer")
+	attack_sword.queue_free()
 	GlobalConst.sig_stop_spawning.emit(true)
 	sprite_2d.z_index += 10
 	get_taunted()
@@ -75,18 +77,19 @@ func death_animation(delta: float):


 func get_taunted():
-	var taunting_enemies: Array[Enemy] = []
+	var taunting_enemies: Array[EnemyBase] = []
 	for body in get_tree().get_nodes_in_group(GlobalConst.GROUP_ENEMY):
-		if global_position.distance_to(body.global_position) < 500.0:
+		print_debug("starting taunt: %s" % global_position.distance_to(body.global_position))
+		if global_position.distance_to(body.global_position) < 1000.0:
 			taunting_enemies.append(body)
+	print_debug("getting taunted by %s enemies" % len(taunting_enemies))
 	for i in range(taunting_enemies.size()):
 		var angle = (TAU / taunting_enemies.size()) * i
 		var target_pos = Vector2(cos(angle), sin(angle)) * 50
-		var new_target = StaticBody2D.new()
-		var collision = CollisionShape2D.new()
+		var new_target = Marker2D.new()
+		print_debug("getting taunted by %s" % taunting_enemies[i])
 		new_target.position = target_pos
 		add_child(new_target)
-		new_target.add_child(collision)
 		taunting_enemies[i].target = new_target


--- a/scenes/tiles/tileset.tres
+++ b/scenes/tiles/tileset.tres
@@ -1,4 +1,4 @@
-[gd_resource type="TileSet" load_steps=8 format=3 uid="uid://c3clgitssvdlg"]
+[gd_resource type="TileSet" load_steps=9 format=3 uid="uid://c3clgitssvdlg"]

 [ext_resource type="Texture2D" uid="uid://2xgqhe7u6lfq" path="res://assets/sprites/roguelikeSheet_transparent.png" id="1_kkifh"]
 [ext_resource type="Shader" uid="uid://clpp23h7fpamt" path="res://assets/shaders/water2.gdshader" id="1_n3s2j"]
@@ -26,6 +26,12 @@ shader_parameter/noise_tex = SubResource("NoiseTexture2D_m3ddo")
 shader_parameter/noise_speed = Vector2(0.03, 0.01)
 shader_parameter/noise_strength = 0.05

+[sub_resource type="NavigationPolygon" id="NavigationPolygon_n3s2j"]
+vertices = PackedVector2Array(8, 8, -8, 8, -8, -8, 8, -8)
+polygons = Array[PackedInt32Array]([PackedInt32Array(0, 1, 2, 3)])
+outlines = Array[PackedVector2Array]([PackedVector2Array(-8, -8, 8, -8, 8, 8, -8, 8)])
+agent_radius = 0.0
+
 [sub_resource type="TileSetAtlasSource" id="TileSetAtlasSource_s7nh2"]
 texture = ExtResource("1_kkifh")
 separation = Vector2i(1, 1)
@@ -74,10 +80,15 @@ separation = Vector2i(1, 1)
 4:0/0/terrains_peering_bit/top_right_corner = 0
 5:0/0 = 0
 5:0/0/terrain_set = 0
+5:0/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 6:0/0 = 0
+6:0/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 7:0/0 = 0
+7:0/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 8:0/0 = 0
+8:0/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 9:0/0 = 0
+9:0/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 10:0/0 = 0
 11:0/0 = 0
 12:0/0 = 0
@@ -197,10 +208,15 @@ separation = Vector2i(1, 1)
 5:1/0/terrains_peering_bit/top_left_corner = 0
 5:1/0/terrains_peering_bit/top_side = 0
 5:1/0/terrains_peering_bit/top_right_corner = 0
+5:1/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 6:1/0 = 0
+6:1/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 7:1/0 = 0
+7:1/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 8:1/0 = 0
+8:1/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 9:1/0 = 0
+9:1/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 10:1/0 = 0
 11:1/0 = 0
 12:1/0 = 0
@@ -311,10 +327,15 @@ separation = Vector2i(1, 1)
 4:2/0/terrains_peering_bit/top_side = 1
 4:2/0/terrains_peering_bit/top_right_corner = 0
 5:2/0 = 0
+5:2/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 6:2/0 = 0
+6:2/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 7:2/0 = 0
+7:2/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 8:2/0 = 0
+8:2/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 9:2/0 = 0
+9:2/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 10:2/0 = 0
 11:2/0 = 0
 12:2/0 = 0
@@ -368,10 +389,15 @@ separation = Vector2i(1, 1)
 3:3/0 = 0
 4:3/0 = 0
 5:3/0 = 0
+5:3/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 6:3/0 = 0
+6:3/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 7:3/0 = 0
+7:3/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 8:3/0 = 0
+8:3/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 9:3/0 = 0
+9:3/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 10:3/0 = 0
 11:3/0 = 0
 12:3/0 = 0
@@ -425,10 +451,15 @@ separation = Vector2i(1, 1)
 3:4/0 = 0
 4:4/0 = 0
 5:4/0 = 0
+5:4/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 6:4/0 = 0
+6:4/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 7:4/0 = 0
+7:4/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 8:4/0 = 0
+8:4/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 9:4/0 = 0
+9:4/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 10:4/0 = 0
 11:4/0 = 0
 12:4/0 = 0
@@ -482,10 +513,15 @@ separation = Vector2i(1, 1)
 3:5/0 = 0
 4:5/0 = 0
 5:5/0 = 0
+5:5/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 6:5/0 = 0
+6:5/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 7:5/0 = 0
+7:5/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 8:5/0 = 0
+8:5/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 9:5/0 = 0
+9:5/0/navigation_layer_0/polygon = SubResource("NavigationPolygon_n3s2j")
 10:5/0 = 0
 11:5/0 = 0
 12:5/0 = 0
@@ -1965,5 +2001,6 @@ terrain_set_0/terrain_0/name = "Grass"
 terrain_set_0/terrain_0/color = Color(0.5, 0.34375, 0.25, 1)
 terrain_set_0/terrain_1/name = "Water"
 terrain_set_0/terrain_1/color = Color(0.5, 0.4375, 0.25, 1)
+navigation_layer_0/layers = 1
 sources/0 = SubResource("TileSetAtlasSource_s7nh2")
 pattern_0 = SubResource("TileMapPattern_beh8d")