Improve chunks, optimization, replace placeholder and more

Co-authored-by: f.fabbrizi <f.fabbrizi@jmpgames.it>
Co-committed-by: f.fabbrizi <f.fabbrizi@jmpgames.it>

core/biome_generator/biome_generator.gd

@@ -10,6 +10,19 @@ const ENTITY_SPAWN_ANY: int = 0
 const ENTITY_SPAWN_HUMANOID_ONLY: int = 1
 const ENTITY_SPAWN_ANIMAL_ONLY: int = 2
 
+const CHUNK_GENERATION_FRAME_BUDGET_USEC: int = 1000 #2 ms/frame to generate chunks
+const CHUNK_CLEANUP_FRAME_BUDGET_USEC: int = 1000 #1 ms/frame per cleanup
+const LAMPPOST_WIRE_FRAME_BUDGET_USEC: int = 1000 #1 ms/frame per i fili dei lampioni
+#(about 4 ms o work for frame)
+#Se compaiono chunk troppo lentamente davanti al treno:
+#aumentare generazione a 3000 o 4000
+#Se ci sono micro-scatti:
+#abbassare generazione a 1000 o 1500
+#Se i fili appaiono in ritardo:
+#aumentare wire a 1500 o 2000
+#Se il cleanup causa scatti:
+#abbassare cleanup a 500
+
 const MAX_CHUNK_UNIQUENESS: int = 5
 const RIVER_SIDE_ORDER: Array[String] = ["north", "est", "south", "west"]
 const RIVER_DIRECTIONS: Dictionary = {

core/biome_generator/railway_pool.tres

@@ -1,16 +1,17 @@
 [gd_resource type="Resource" script_class="RailwayPool" format=3 uid="uid://nrm040srfjwo"]
 
 [ext_resource type="PackedScene" uid="uid://cl2ast2tk7ifw" path="res://tgcc/chunk/railway/scene/chunk_railway_curve.tscn" id="1_86h1y"]
-[ext_resource type="PackedScene" uid="uid://85l80b6jcdhr" path="res://tgcc/chunk/railway/scene/chunk_railway_curve_2.tscn" id="2_r0882"]
 [ext_resource type="PackedScene" uid="uid://cewdxvcpqb53f" path="res://tgcc/chunk/railway/scene/chunk_railway_station_doubleside.tscn" id="3_3auto"]
 [ext_resource type="PackedScene" uid="uid://d3pcshw2bioic" path="res://tgcc/chunk/railway/scene/chunk_railway_station_oneside.tscn" id="4_i1umq"]
 [ext_resource type="PackedScene" uid="uid://bqxpqhla2kogq" path="res://tgcc/chunk/railway/scene/chunk_railway_straight.tscn" id="5_x44at"]
 [ext_resource type="PackedScene" uid="uid://c3ub6rj0tlt6q" path="res://tgcc/chunk/railway/scene/chunk_railway_straight_2.tscn" id="6_vrrkw"]
 [ext_resource type="PackedScene" uid="uid://cqevecsd1cm1v" path="res://tgcc/chunk/railway/scene/chunk_railway_straight_3.tscn" id="7_l17bw"]
 [ext_resource type="PackedScene" uid="uid://f53hfrjaxkwa" path="res://tgcc/chunk/railway/scene/chunk_railway_straight_bridge.tscn" id="8_qcl5o"]
+[ext_resource type="PackedScene" uid="uid://fi6faw7ag1i0" path="res://tgcc/chunk/railway/scene/chunk_railway_curve_3.tscn" id="8_r0882"]
+[ext_resource type="PackedScene" uid="uid://dglpoh63x2lpy" path="res://tgcc/chunk/railway/scene/chunk_railway_curve_4.tscn" id="9_3auto"]
 [ext_resource type="Script" uid="uid://c374rv220mvh1" path="res://core/biome_generator/railway_pool.gd" id="9_8tdc7"]
 
 [resource]
 script = ExtResource("9_8tdc7")
 name = "Railway Pool"
-available_railways = Array[PackedScene]([ExtResource("1_86h1y"), ExtResource("2_r0882"), ExtResource("3_3auto"), ExtResource("4_i1umq"), ExtResource("5_x44at"), ExtResource("6_vrrkw"), ExtResource("7_l17bw"), ExtResource("8_qcl5o")])
+available_railways = Array[PackedScene]([ExtResource("1_86h1y"), ExtResource("3_3auto"), ExtResource("4_i1umq"), ExtResource("5_x44at"), ExtResource("6_vrrkw"), ExtResource("7_l17bw"), ExtResource("8_qcl5o"), ExtResource("8_r0882"), ExtResource("9_3auto")])

core/daynight/environment_management.tscn

@@ -73,6 +73,7 @@ fog_density_morning = 0.01
 fog_density_afternoon = 0.02
 glow_morning = 0.4
 glow_night = 0.8
+enable_fog = true
 material_fog = SubResource("ShaderMaterial_b5atu")
 material_drops = SubResource("StandardMaterial3D_r4tfj")
 material_clouds = SubResource("ShaderMaterial_ruhh7")

core/shader_warmup.gd

@@ -0,0 +1,74 @@
+extends Node
+## Autoload — pre-warms custom shaders on startup by rendering each
+## ShaderMaterial once in a hidden 64×64 viewport.
+##
+## StandardMaterial3D is covered by ubershaders (already enabled).
+## This catches the custom .gdshader materials that ubershaders miss.
+
+# Paths to all ShaderMaterial .tres files with custom shaders
+const MATERIAL_PATHS: Array[String] = [
+	"res://core/daynight/environment_dust_material.tres",
+	"res://core/daynight/environment_shadows.tres",
+	"res://core/daynight/godrays.tres",
+	"res://core/daynight/weather_overlay.tres",
+	"res://core/daynight/weather_plain_shader.tres",
+	"res://core/biome_generator/wires.tres",
+	"res://tgcc/chunk/prop/grass/grass_chunk.tres",
+	"res://tgcc/chunk/prop/grass/grass_chunk_weeds.tres",
+	"res://tgcc/chunk/prop/grass/grass_chunk_weeds2.tres",
+	"res://tgcc/chunk/prop/grass/grass_bank.tres",
+	"res://tgcc/chunk/prop/tree/leaves_tree1.tres",
+	"res://tgcc/chunk/prop/tree/leaves_tree_small.tres",
+	"res://tgcc/chunk/prop/tree/trunk.tres",
+	"res://tgcc/chunk/prop/flower/flower.tres",
+	"res://tgcc/chunk/prop/flower/bush.tres",
+	"res://tgcc/chunk/prop/house/house_emissiv.tres",
+	"res://tgcc/chunk/prop/tenda noren/tenda.tres",
+	"res://tgcc/chunk/prop/Tori/Tori.tres",
+	"res://tgcc/chunk/prop/zen garden/zengardenCircle.tres",
+	"res://tgcc/chunk/prop/zen garden/zengarden.tres",
+]
+
+
+func _ready() -> void:
+	await get_tree().process_frame
+	warmup()
+
+
+func warmup() -> void:
+	var valid: Array[ShaderMaterial] = []
+	for path in MATERIAL_PATHS:
+		if not ResourceLoader.exists(path):
+			continue
+		var mat := load(path)
+		if mat is ShaderMaterial:
+			valid.append(mat)
+
+	if valid.is_empty():
+		return
+
+	print("[ShaderWarmup] Pre-warming %d custom ShaderMaterials..." % valid.size())
+
+	# Tiny hidden viewport — 64×64 is cheap to render
+	var vp := SubViewport.new()
+	vp.size = Vector2i(64, 64)
+	vp.render_target_update_mode = SubViewport.UPDATE_ALWAYS
+	add_child(vp)
+
+	var cam := Camera3D.new()
+	cam.current = true
+	cam.environment = null
+	vp.add_child(cam)
+
+	var quad := MeshInstance3D.new()
+	quad.mesh = QuadMesh.new()
+	quad.mesh.size = Vector2(1, 1)
+	quad.position = Vector3(0, 0, -2)
+	cam.add_child(quad)
+
+	for mat in valid:
+		quad.material_override = mat
+		await get_tree().process_frame  # one frame renders the quad with this material
+
+	vp.queue_free()
+	print("[ShaderWarmup] Done.")

core/shader_warmup.gd.uid

@@ -0,0 +1 @@
+uid://d16jx65gmy20b