bloodstain improvements. work during pause for player, vastly more efficient

autoloads/stain_layer.gd

@@ -0,0 +1,17 @@
+extends Light2D
+
+
+onready var viewport: Viewport = $Viewport
+
+
+func _process(delta: float) -> void:
+	var main_viewport = get_viewport()
+	if viewport.canvas_transform != main_viewport.canvas_transform:
+		viewport.canvas_transform = main_viewport.canvas_transform
+		transform = main_viewport.canvas_transform.inverse()
+		viewport.render_target_update_mode = Viewport.UPDATE_ONCE
+
+
+func add_stain(stain: Node2D) -> void:
+	viewport.add_child(stain)
+	viewport.render_target_update_mode = Viewport.UPDATE_ONCE

autoloads/stain_layer.tscn

@@ -0,0 +1,21 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://autoloads/stain_layer.gd" type="Script" id=1]
+
+[sub_resource type="ViewportTexture" id=1]
+viewport_path = NodePath("Viewport")
+
+[node name="StainLight" type="Light2D" groups=["viewport_autoload"]]
+texture = SubResource( 1 )
+offset = Vector2( 128, 96 )
+mode = 2
+range_item_cull_mask = 2
+script = ExtResource( 1 )
+
+[node name="Viewport" type="Viewport" parent="."]
+size = Vector2( 256, 192 )
+transparent_bg = true
+disable_3d = true
+usage = 1
+render_target_v_flip = true
+render_target_update_mode = 1

objects/enemy/death_particles.gd

@@ -10,7 +10,7 @@ export var spray_velocity: float = 80
 
 func _ready() -> void:
 	for i in spray_ammount:
-		var spray: RigidBody2D = BloodSpray.instance()
+		var spray = BloodSpray.instance()
 		spray.global_position = global_position
-		spray.linear_velocity = Vector2(spray_velocity, 0.0).rotated(randf() * TAU)
+		spray.velocity = Vector2(randf() * spray_velocity, 0.0).rotated(randf() * TAU)
 		get_parent().add_child(spray)

objects/environment/blood/blood_spray.gd

@@ -1,4 +1,4 @@
-extends RigidBody2D
+extends Area2D
 
 
 const BloodStain := preload("res://objects/environment/blood/blood_stain.tscn")
@@ -7,6 +7,9 @@ const BloodStain := preload("res://objects/environment/blood/blood_stain.tscn")
 export var color: Color = Color(0xf53342ff)
 
 
+var velocity := Vector2.ZERO
+
+
 onready var sprite: Sprite = $Sprite
 
 
@@ -15,15 +18,17 @@ func _ready() -> void:
 
 
 func _physics_process(delta: float) -> void:
-	sprite.global_rotation = linear_velocity.angle()
+	velocity.y += 98.0 * delta
+	position += velocity * delta
+	sprite.global_rotation = velocity.angle()
 
 
 func _on_body_entered(body: Node) -> void:
 	if body.is_in_group("can_stain"):
 		var stain = BloodStain.instance()
-		stain.color = color
+		stain.modulate = color
 		stain.global_position = global_position
-		body.add_child(stain)
+		StainLayer.add_stain(stain)
 		queue_free()
 	elif body is TileMap:
 		queue_free()

objects/environment/blood/blood_spray.tscn

@@ -4,11 +4,9 @@
 [ext_resource path="res://objects/environment/blood/blood_spray.gd" type="Script" id=3]
 
 [sub_resource type="CircleShape2D" id=1]
-radius = 1.0
+radius = 0.5
 
-[node name="BloodSpray" type="RigidBody2D"]
-contacts_reported = 4
-contact_monitor = true
+[node name="BloodSpray" type="Area2D"]
 script = ExtResource( 3 )
 
 [node name="Sprite" type="Sprite" parent="."]

objects/environment/blood/blood_stain.gd

@@ -1,4 +1,4 @@
-extends Light2D
+extends Sprite
 
 
 func _ready() -> void:

objects/environment/blood/blood_stain.tscn

@@ -3,10 +3,7 @@
 [ext_resource path="res://graphics/particles/dust.png" type="Texture" id=1]
 [ext_resource path="res://objects/environment/blood/blood_stain.gd" type="Script" id=2]
 
-[node name="BloodStain" type="Light2D"]
+[node name="BloodStain" type="Sprite"]
 light_mask = 3
 texture = ExtResource( 1 )
-color = Color( 0.960784, 0.2, 0.258824, 1 )
-mode = 2
-range_item_cull_mask = 2
 script = ExtResource( 2 )

objects/player/player.gd

@@ -277,9 +277,11 @@ func _on_Dead_state_entered() -> void:
 		particles.emitting = true
 		get_parent().add_child(particles)
 		for i in 16:
-			var spray: RigidBody2D = BloodSpray.instance()
-			spray.global_position = global_position
-			spray.linear_velocity = Vector2(80.0, 0.0).rotated(randf() * TAU)
+			var spray = BloodSpray.instance()
+			spray.pause_mode = PAUSE_MODE_PROCESS
+			Physics2DServer.set_active(true)
+			spray.global_position = death_splatter_position.global_position
+			spray.velocity = Vector2(randf() * 80.0, 0.0).rotated(randf() * TAU)
 			get_parent().add_child(spray)
 	else:
 		skip_blood = false

project.godot

@@ -81,6 +81,7 @@ TouchControls="*res://autoloads/touch_controls.tscn"
 SceneManager="*res://autoloads/scene_manager.tscn"
 Console="*res://autoloads/console.tscn"
 Fade="*res://autoloads/fade.tscn"
+StainLayer="*res://autoloads/stain_layer.tscn"
 
 [debug]