initial version for damage points VFX

addons/top_down/resources/InstanceResources/vfx/damage_points_instance_resource.tres

@@ -0,0 +1,9 @@
+[gd_resource type="Resource" script_class="InstanceResource" load_steps=3 format=3 uid="uid://xbek2osd7l4w"]
+
+[ext_resource type="Resource" uid="uid://d16p36img8x6j" path="res://addons/top_down/resources/RoomResources/front_reference.tres" id="1_adrs0"]
+[ext_resource type="Script" path="res://addons/great_games_library/resources/InstanceResource/InstanceResource.gd" id="1_y73ce"]
+
+[resource]
+script = ExtResource("1_y73ce")
+scene_path = "res://addons/top_down/scenes/vfx/damage_points.tscn"
+parent_reference_resource = ExtResource("1_adrs0")

addons/top_down/scenes/actors/actor.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=44 format=3 uid="uid://botai66n8rwt3"]
+[gd_scene load_steps=46 format=3 uid="uid://botai66n8rwt3"]
 
 [ext_resource type="Texture2D" uid="uid://b3gj1j73p318" path="res://addons/top_down/assets/images/shadow.png" id="1_1xdx7"]
 [ext_resource type="Script" path="res://addons/great_games_library/nodes/ResourceNode/ResourceNode.gd" id="1_atd7g"]
@@ -23,7 +23,9 @@
 [ext_resource type="Script" path="res://addons/great_games_library/resources/ValueResource/StringArrayResource.gd" id="15_loiow"]
 [ext_resource type="Script" path="res://addons/top_down/scripts/damage/HoleTrigger.gd" id="16_f6cga"]
 [ext_resource type="Script" path="res://addons/top_down/scripts/damage/HoleDeath.gd" id="18_634cs"]
+[ext_resource type="Resource" uid="uid://xbek2osd7l4w" path="res://addons/top_down/resources/InstanceResources/vfx/damage_points_instance_resource.tres" id="22_nljy0"]
 [ext_resource type="Resource" uid="uid://d1ck1axrd4kd4" path="res://addons/top_down/resources/RoomResources/ysort_reference.tres" id="22_yjx3l"]
+[ext_resource type="Script" path="res://addons/top_down/scripts/actor/DamageDisplay.gd" id="26_oudld"]
 
 [sub_resource type="Resource" id="Resource_u7p0r"]
 resource_name = "movement  properties"
@@ -312,3 +314,8 @@ root_node = NodePath("..")
 drop_parent_reference = ExtResource("22_yjx3l")
 resource_node = NodePath("../ResourceNode")
 asset_list = SubResource("Resource_mslt1")
+
+[node name="DamageDisplay" type="Node" parent="." node_paths=PackedStringArray("resource_node")]
+script = ExtResource("26_oudld")
+resource_node = NodePath("../ResourceNode")
+damage_points_instance_resource = ExtResource("22_nljy0")

addons/top_down/scenes/vfx/damage_points.tscn

@@ -0,0 +1,30 @@
+[gd_scene load_steps=3 format=3 uid="uid://cub8dbj1w1gk"]
+
+[ext_resource type="Script" path="res://addons/top_down/scripts/damage/DamagePoints.gd" id="1_tj76g"]
+[ext_resource type="Script" path="res://addons/great_games_library/resources/InstanceResource/PoolNode.gd" id="2_hgvc1"]
+
+[node name="Damagepoints" type="Node2D" node_paths=PackedStringArray("label", "pool_node")]
+script = ExtResource("1_tj76g")
+label = NodePath("Label")
+pool_node = NodePath("PoolNode")
+
+[node name="Label" type="Label" parent="."]
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -3.5
+offset_top = -4.5
+offset_right = 3.5
+offset_bottom = 4.5
+grow_horizontal = 2
+grow_vertical = 2
+size_flags_horizontal = 4
+theme_override_constants/outline_size = 2
+theme_override_font_sizes/font_size = 6
+text = "69"
+
+[node name="PoolNode" type="Node" parent="." node_paths=PackedStringArray("ready_nodes")]
+script = ExtResource("2_hgvc1")
+ready_nodes = [NodePath(".."), NodePath("../Label")]

addons/top_down/scripts/actor/DamageDisplay.gd

@@ -0,0 +1,31 @@
+class_name DamageDisplay
+extends Node
+
+@export var resource_node:ResourceNode
+@export var damage_points_instance_resource:InstanceResource
+
+const UPDATE_INTERVAL:float = 0.3
+var last_time:float
+var last_points:DamagePoints
+var total_points:float
+
+func _ready()->void:
+	var _health_resource:HealthResource = resource_node.get_resource("health")
+	_health_resource.damage_data.connect(on_damage_data)
+
+func on_damage_data(damage_resource:DamageResource)->void:
+	var _time:float = Time.get_ticks_msec() * 0.001
+	if last_points && _time < last_time + UPDATE_INTERVAL:
+		last_time = _time
+		total_points += damage_resource.get_total_damage()
+		last_points.set_displayed_points(total_points, damage_resource.is_critical)
+		return
+
+	last_time = _time
+	total_points = damage_resource.get_total_damage()
+	var _config_callback:Callable = func (inst:Node2D)->void:
+		# give offset to appear on body position
+		inst.global_position = owner.global_position + Vector2(0.0, -8.0)
+		(inst as DamagePoints).set_displayed_points(total_points, damage_resource.is_critical)
+
+	last_points = damage_points_instance_resource.instance(_config_callback)

addons/top_down/scripts/damage/ActorDamage.gd

@@ -10,7 +10,6 @@ extends Node
 @export var dead_vfx_instance_resource:InstanceResource
 
 func _ready()->void:
-
 	var _health_resource:HealthResource = resource_node.get_resource("health")
 	_health_resource.damaged.connect(flash_animation_player.stop)
 	_health_resource.damaged.connect(flash_animation_player.play.bind(flash_animation))
@@ -30,5 +29,5 @@ func play_dead()->void:
 		inst.global_position = owner.global_position
 		inst.scale.x = sprite_flip.dir
 
-	dead_vfx_instance_resource.instance(_config_callback)
+	dead_vfx_instance_resource.instance.call_deferred(_config_callback)
 	owner.queue_free()

addons/top_down/scripts/damage/DamagePoints.gd

@@ -0,0 +1,22 @@
+class_name DamagePoints
+extends Node2D
+
+@export var label:Label
+@export var tween_time:float = 1.0
+@export var distance:float = 16.0
+@export var pool_node:PoolNode
+
+
+func set_displayed_points(points:int, is_critical:bool)->void:
+	label.text = str(points)
+	label.set_anchors_and_offsets_preset(Control.PRESET_CENTER,Control.PRESET_MODE_MINSIZE)
+
+func _ready()->void:
+	var _angle:float = randf_range(0.6, 0.9) * TAU
+	var _offset:Vector2 = Vector2.RIGHT.rotated(_angle) * distance
+	var tween:Tween = create_tween()
+	tween.tween_method(tween_move.bind(global_position, global_position + _offset), 0.0, 1.0, tween_time).set_ease(Tween.EASE_OUT).set_trans(Tween.TRANS_CUBIC)
+	tween.finished.connect(pool_node.pool_return)
+
+func tween_move(t:float, from:Vector2, to:Vector2)->void:
+	global_position = from.lerp(to, t)

addons/top_down/scripts/damage/DamageResource.gd

@@ -81,6 +81,10 @@ func process(resource_node:ResourceNode)->void:
 	hit_list.append(resource_node.owner)
 	_health_resource.add_hp( -get_total_damage() )
 
+	# TODO: need a dedicated receiver data exchange
+	# Used for showing received damage points
+	_health_resource.damage_data.emit(self)
+
 	var _push_resource:PushResource = resource_node.get_resource("push")
 	if _push_resource != null:
 		_push_resource.add_impulse(direction * kickback_strength)

addons/top_down/scripts/damage/HealthResource.gd

@@ -5,6 +5,7 @@ signal damaged
 signal dead
 signal hp_changed
 signal full
+signal damage_data(damage_resource:DamageResource)
 
 @export var hp:float = 5
 @export var max_hp:float = 5