Tutorial 17 Enemy AI and Stats

ActionRPG-HeartBeast/Enemies/Bat.gd

@@ -20,6 +20,7 @@ var state = IDLE
 onready var sprite = $AnimatedSprite
 onready var stats = $Stats
 onready var playerDetectionZone = $PlayerDetectionZone
+onready var hurtbox = $Hurtbox
 
 func _physics_process(delta):
 	knockback = knockback.move_toward(Vector2.ZERO, 200 * delta)
@@ -51,6 +52,7 @@ func seek_player():
 func _on_Hurtbox_area_entered(area):
 	stats.health -= area.damage
 	knockback = area.knockback_vector * 120
+	hurtbox.create_hit_effect()
 	#queue_free() # Replace with function body.
 
 func _on_Stats_no_health():

ActionRPG-HeartBeast/Enemies/Bat.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=16 format=2]
+[gd_scene load_steps=18 format=2]
 
 [ext_resource path="res://Enemies/Bat.png" type="Texture" id=1]
 [ext_resource path="res://Shadows/SmallShadow.png" type="Texture" id=2]
@@ -6,6 +6,7 @@
 [ext_resource path="res://Enemies/Bat.gd" type="Script" id=4]
 [ext_resource path="res://Stats.tscn" type="PackedScene" id=5]
 [ext_resource path="res://Enemies/PlayerDetectionZone.tscn" type="PackedScene" id=6]
+[ext_resource path="res://Overlap/Hitbox.tscn" type="PackedScene" id=7]
 
 [sub_resource type="AtlasTexture" id=1]
 atlas = ExtResource( 1 )
@@ -45,6 +46,9 @@ height = 6.0
 [sub_resource type="CircleShape2D" id=9]
 radius = 61.0328
 
+[sub_resource type="CircleShape2D" id=10]
+radius = 5.0
+
 [node name="Bat" type="KinematicBody2D"]
 collision_layer = 16
 script = ExtResource( 4 )
@@ -78,8 +82,16 @@ max_health = 2
 modulate = Color( 1, 1, 1, 0.258824 )
 shape = SubResource( 9 )
 
+[node name="Hitbox" parent="." instance=ExtResource( 7 )]
+collision_mask = 4
+
+[node name="CollisionShape2D" parent="Hitbox" index="0"]
+position = Vector2( 0, -15 )
+shape = SubResource( 10 )
+
 [connection signal="area_entered" from="Hurtbox" to="." method="_on_Hurtbox_area_entered"]
 [connection signal="no_health" from="Stats" to="." method="_on_Stats_no_health"]
 
 [editable path="Hurtbox"]
 [editable path="PlayerDetectionZone"]
+[editable path="Hitbox"]

ActionRPG-HeartBeast/Overlap/Hurtbox.gd

@@ -1,22 +1,36 @@
 extends Area2D
 
-export(bool) var show_hit = true
-
 const HitEffect = preload("res://Effects/HitEffect.tscn")
 
-# Called when the node enters the scene tree for the first time.
-func _ready():
-	pass # Replace with function body.
+var invincible = false setget set_invincible
 
+onready var timer = $Timer
 
-# Called every frame. 'delta' is the elapsed time since the previous frame.
-#func _process(delta):
-#	pass
+signal invincibility_started
+signal invincibility_ended
 
+func set_invincible(value):
+	invincible = value
+	if invincible == true:
+		emit_signal("invincibility_started")
+	else:
+		emit_signal("invincibility_ended")
 
-func _on_Hurtbox_area_entered(area):
-	if show_hit:
-		var effect = HitEffect.instance()
-		var main = get_tree().current_scene
-		main.add_child(effect)
-		effect.global_position = global_position
+func start_invincibility(duration):
+	self.invincible = true
+	timer.start(duration)
+
+func create_hit_effect():
+	var effect = HitEffect.instance()
+	var main = get_tree().current_scene
+	main.add_child(effect)
+	effect.global_position = global_position
+
+func _on_Timer_timeout():
+	self.invincible = false
+
+func _on_Hurtbox_invincibility_ended():
+	monitorable = true
+
+func _on_Hurtbox_invincibility_started():
+	set_deferred("monitorable", false)

ActionRPG-HeartBeast/Overlap/Hurtbox.tscn

@@ -9,4 +9,8 @@ script = ExtResource( 1 )
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="."]
 
-[connection signal="area_entered" from="." to="." method="_on_Hurtbox_area_entered"]
+[node name="Timer" type="Timer" parent="."]
+
+[connection signal="invincibility_ended" from="." to="." method="_on_Hurtbox_invincibility_ended"]
+[connection signal="invincibility_started" from="." to="." method="_on_Hurtbox_invincibility_started"]
+[connection signal="timeout" from="Timer" to="." method="_on_Timer_timeout"]

ActionRPG-HeartBeast/Player/Player.gd

@@ -3,6 +3,7 @@ extends KinematicBody2D
 var velocity = Vector2.ZERO
 var input_vector = Vector2.ZERO
 var roll_vector = Vector2.DOWN
+var stats = PlayerStats
 
 const ACCELERATION = 500
 const MAX_SPEED = 80
@@ -21,8 +22,10 @@ onready var animationPlayer = $AnimationPlayer
 onready var animationTree = $AnimationTree
 onready var animationState = animationTree.get("parameters/playback")
 onready var swordHitbox = $HitboxPivot/SwordHitbox
+onready var hurtBox = $Hurtbox
 
 func _ready():
+	stats.connect("no_health", self, "queue_free")
 	animationTree.active = true
 	swordHitbox.knockback_vector = roll_vector
 
@@ -90,3 +93,9 @@ func attack_aninimation_finished():
 # Called every frame. 'delta' is the elapsed time since the previous frame.
 #func _process(delta):
 #	pass
+
+
+func _on_Hurtbox_area_entered(area):
+	stats.health -= 1
+	hurtBox.start_invincibility(0.5)
+	hurtBox.create_hit_effect()

ActionRPG-HeartBeast/Player/Player.tscn

@@ -1,9 +1,10 @@
-[gd_scene load_steps=54 format=2]
+[gd_scene load_steps=56 format=2]
 
 [ext_resource path="res://Player/Player.gd" type="Script" id=1]
 [ext_resource path="res://Player/Player.png" type="Texture" id=2]
 [ext_resource path="res://Overlap/Hitbox.tscn" type="PackedScene" id=3]
 [ext_resource path="res://Player/SwordHitbox.gd" type="Script" id=4]
+[ext_resource path="res://Overlap/Hurtbox.tscn" type="PackedScene" id=5]
 
 [sub_resource type="CapsuleShape2D" id=1]
 radius = 4.0
@@ -641,6 +642,10 @@ graph_offset = Vector2( -10, -78 )
 [sub_resource type="CapsuleShape2D" id=40]
 height = 12.0
 
+[sub_resource type="CapsuleShape2D" id=52]
+radius = 5.0
+height = 6.0
+
 [node name="Player" type="KinematicBody2D"]
 collision_layer = 2
 script = ExtResource( 1 )
@@ -698,4 +703,14 @@ script = ExtResource( 4 )
 shape = SubResource( 40 )
 disabled = true
 
+[node name="Hurtbox" parent="." instance=ExtResource( 5 )]
+collision_layer = 4
+
+[node name="CollisionShape2D" parent="Hurtbox" index="0"]
+position = Vector2( 0, -4 )
+shape = SubResource( 52 )
+
+[connection signal="area_entered" from="Hurtbox" to="." method="_on_Hurtbox_area_entered"]
+
 [editable path="HitboxPivot/SwordHitbox"]
+[editable path="Hurtbox"]

ActionRPG-HeartBeast/Player/PlayerStats.tscn

@@ -0,0 +1,6 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://Stats.tscn" type="PackedScene" id=1]
+
+[node name="PlayerStats" instance=ExtResource( 1 )]
+max_health = 4

ActionRPG-HeartBeast/build/web/index.html

@@ -139,7 +139,7 @@
 	<script type='text/javascript' src='index.js'></script>
 	<script type='text/javascript'>//<![CDATA[
 
-		const GODOT_CONFIG = {"args":[],"canvasResizePolicy":2,"executable":"index","experimentalVK":false,"fileSizes":{"index.pck":2277296,"index.wasm":13790961},"focusCanvas":true,"gdnativeLibs":[]};
+		const GODOT_CONFIG = {"args":[],"canvasResizePolicy":2,"executable":"index","experimentalVK":false,"fileSizes":{"index.pck":2283408,"index.wasm":13790961},"focusCanvas":true,"gdnativeLibs":[]};
 		var engine = new Engine(GODOT_CONFIG);
 
 		(function() {

ActionRPG-HeartBeast/project.godot

@@ -14,6 +14,10 @@ config/name="ActionRPG-HeartBeast"
 run/main_scene="res://World.tscn"
 config/icon="res://icon.png"
 
+[autoload]
+
+PlayerStats="*res://Player/PlayerStats.tscn"
+
 [display]
 
 window/size/width=320

ActionRPG-HeartBeast/touch_controls/TouchControls.tscn

@@ -10,25 +10,25 @@
 [node name="TouchControls" type="CanvasLayer"]
 
 [node name="Left" type="TouchScreenButton" parent="."]
-position = Vector2( 4, 133 )
+position = Vector2( 6, 133 )
 normal = ExtResource( 4 )
 passby_press = true
 action = "ui_left"
 
 [node name="Right" type="TouchScreenButton" parent="."]
-position = Vector2( 43, 133 )
+position = Vector2( 40, 133 )
 normal = ExtResource( 2 )
 passby_press = true
 action = "ui_right"
 
 [node name="Up" type="TouchScreenButton" parent="."]
-position = Vector2( 23, 113 )
+position = Vector2( 23, 116 )
 normal = ExtResource( 5 )
 passby_press = true
 action = "ui_up"
 
 [node name="Down" type="TouchScreenButton" parent="."]
-position = Vector2( 23, 153 )
+position = Vector2( 23, 150 )
 normal = ExtResource( 6 )
 passby_press = true
 action = "ui_down"