extends TestLevelBuilder

func _build_environment() -> void:
	# Dust 2 uses the warm sunset palette. Selecting it through the shared
	# environment updates both the sky and the fullscreen ink pass.
	LevelEnvironment.add_to(self, "sunset")


func _build_geometry() -> void:
	# Build environment setup
	_build_environment()
	
	var env = get_node_or_null("WorldEnvironment")
	if env:
		var environment = env.environment
		# (keep the shared linear tonemap — ACES crushes the cel bands)
		if environment.sky and environment.sky.sky_material:
			var sky_mat = environment.sky.sky_material
			sky_mat.set_shader_parameter("top_color", Color(0.3, 0.5, 0.8))
			sky_mat.set_shader_parameter("horizon_color", Color(0.8, 0.7, 0.5))
			sky_mat.set_shader_parameter("ground_color", Color(0.2, 0.15, 0.1))

	_build_lighting()
	var sun = get_node_or_null("Sun")
	if sun:
		sun.light_color = Color(1.0, 0.95, 0.85)
		sun.light_energy = 1.5
		sun.rotation_degrees = Vector3(-45, 45, 0)
		
	var fill = get_node_or_null("FillLight")
	if fill:
		fill.rotation_degrees = Vector3(-45, -135, 0)
		fill.light_energy = 0.3

	_build_dust2_layout()

func _spawn_player(pid: int) -> CharacterBody3D:
	var player = super._spawn_player(pid)
	player.position = Vector3(randf_range(-2, 2), 1, 50 + randf_range(-2, 2))
	# Looking at (0,1,0) from (0,1,50) is facing straight down the -Z axis, which is rotation = 0,0,0
	player.rotation = Vector3.ZERO
	return player

func _build_dust2_layout() -> void:
	# Materials
	var wall_mat = LevelMaterials.tinted(Color(0.85, 0.75, 0.6))  # Sandstone
	var floor_mat = LevelMaterials.tinted(Color(0.7, 0.65, 0.55))  # Dusty ground
	var box_mat = LevelMaterials.tinted(Color(0.4, 0.3, 0.2), true)  # Wood crates
	
	# Root CSG — sandstone: the whole map reads acoustically as brick
	var root_csg = CSGCombiner3D.new()
	root_csg.use_collision = true
	root_csg.set_meta("acoustic_material", "brick")
	add_child(root_csg)
	
	# Huge solid block representing the world bounds
	var world_block = CSGBox3D.new()
	world_block.size = Vector3(140, 20, 140)
	world_block.position = Vector3(0, 10, 0)
	world_block.material = wall_mat
	root_csg.add_child(world_block)
	
	# Helper function to carve out open-air areas (cuts through the ceiling)
	var carve_open = func(pos: Vector3, size: Vector3):
		var hole = CSGBox3D.new()
		hole.operation = CSGShape3D.OPERATION_SUBTRACTION
		var height = 25.0 - pos.y
		hole.size = Vector3(size.x, height, size.z)
		hole.position = Vector3(pos.x, pos.y + (height / 2.0), pos.z)
		root_csg.add_child(hole)
		return hole
		
	# Helper function to carve out tunnels (leaves a ceiling)
	var carve_tunnel = func(pos: Vector3, size: Vector3):
		var hole = CSGBox3D.new()
		hole.operation = CSGShape3D.OPERATION_SUBTRACTION
		hole.size = size
		hole.position = pos + Vector3(0, size.y / 2.0, 0)
		root_csg.add_child(hole)
		return hole
		
	# Helper function to carve a precise slope (no lips or hard stops)
	var carve_ramp = func(start_pos: Vector3, width: float, length: float, height: float, is_x_axis: bool, reverse: bool):
		var ramp_box = CSGBox3D.new()
		ramp_box.operation = CSGShape3D.OPERATION_SUBTRACTION
		
		var slope = atan2(height, length)
		var dir = 1.0 if reverse else -1.0
		
		if not is_x_axis: # Ramp goes along Z
			ramp_box.size = Vector3(width, 50, 50)
			ramp_box.rotation.x = slope * dir
			var mid_point = start_pos + Vector3(0, height / 2.0, (length / 2.0) * dir)
			ramp_box.position = mid_point + (Vector3.UP.rotated(Vector3.RIGHT, ramp_box.rotation.x) * 25.0)
		else: # Ramp goes along X
			ramp_box.size = Vector3(50, 50, width)
			ramp_box.rotation.z = -slope * dir
			var mid_point = start_pos + Vector3((length / 2.0) * dir, height / 2.0, 0)
			ramp_box.position = mid_point + (Vector3.UP.rotated(Vector3.FORWARD, ramp_box.rotation.z) * 25.0)
			
		root_csg.add_child(ramp_box)
		return ramp_box

	# ---------------------------------------------------------
	# LAYOUT (with generous overlaps to prevent getting stuck)
	# ---------------------------------------------------------
	
	# T Spawn (South)
	carve_open.call(Vector3(0, 0, 50), Vector3(25, 8, 15))
	
	# Suicide & Mid Corridor
	carve_open.call(Vector3(0, 0, 42), Vector3(8, 8, 10)) # Connects T spawn to Mid
	carve_open.call(Vector3(0, 0, 15), Vector3(12, 8, 55)) # Main Mid
	
	# Mid Doors (Pinch point)
	carve_open.call(Vector3(0, 0, -14), Vector3(2, 8, 5))
	
	# CT Spawn
	carve_open.call(Vector3(0, 0, -30), Vector3(30, 8, 30))
	
	# ---------------------------------------------------------
	# B SIDE
	# ---------------------------------------------------------
	# Lower B Tunnels (Connects from Mid at X=0 to West)
	carve_tunnel.call(Vector3(-18, 0, 30), Vector3(40, 6, 8))
	
	# Spiral stairs up to Upper B Tunnels (Using a ramp instead of stairs for smoothness)
	carve_ramp.call(Vector3(-34, 0, 34), 8.0, 15.0, 4.0, false, false) # Ramp from Lower to Upper B
	
	# Upper B Tunnels
	carve_tunnel.call(Vector3(-34, 4, 15), Vector3(8, 6, 30))
	
	# B Site
	carve_open.call(Vector3(-35, 4, -10), Vector3(25, 8, 25))
	
	# B Window & Door (Connecting B Site to CT Spawn)
	carve_tunnel.call(Vector3(-15, 4, -10), Vector3(25, 6, 5)) # Door
	carve_tunnel.call(Vector3(-15, 4, -18), Vector3(20, 4, 4)) # Window
	
	# CT Spawn Ramp to B Site
	carve_ramp.call(Vector3(-15, 0, -15), 10.0, 15.0, 4.0, true, false) # Ramp up from CT to B Door
	
	# ---------------------------------------------------------
	# A SIDE
	# ---------------------------------------------------------
	# A Long Doors (Connects T Spawn/Mid to A Long)
	carve_tunnel.call(Vector3(15, 0, 40), Vector3(25, 6, 8))
	carve_tunnel.call(Vector3(30, 0, 40), Vector3(8, 6, 15))
	
	# A Long
	carve_open.call(Vector3(30, 0, 15), Vector3(15, 8, 45))
	
	# A Pit (A hole downwards at the end of A Long)
	var pit = CSGBox3D.new()
	pit.operation = CSGShape3D.OPERATION_SUBTRACTION
	pit.size = Vector3(15, 5, 12)
	pit.position = Vector3(30, -2.5, 35)
	root_csg.add_child(pit)
	
	# A Site
	carve_open.call(Vector3(30, 4, -15), Vector3(30, 8, 30))
	
	# Ramp up to A site from Long
	carve_ramp.call(Vector3(30, 0, -5), 15.0, 15.0, 4.0, false, false)
	
	# Ramp down from A Site to CT Spawn
	carve_ramp.call(Vector3(15, 0, -25), 15.0, 15.0, 4.0, true, true)
	
	# Catwalk / A Short
	carve_open.call(Vector3(15, 4, 5), Vector3(20, 8, 8))
	carve_open.call(Vector3(20, 4, -5), Vector3(8, 8, 15))
	
	# Stairs from Mid to Catwalk (Smooth ramp)
	carve_ramp.call(Vector3(5, 0, 5), 8.0, 12.0, 4.0, true, true)
	
	# Floor
	var floor_box = CSGBox3D.new()
	floor_box.size = Vector3(140, 1, 140)
	floor_box.position = Vector3(0, -0.5, 0)
	floor_box.material = floor_mat
	root_csg.add_child(floor_box)
	
	# Cover Boxes
	var add_box = func(pos: Vector3, size: Vector3):
		var b = CSGBox3D.new()
		b.size = size
		b.position = pos + Vector3(0, size.y / 2.0, 0)
		b.material = box_mat
		root_csg.add_child(b)
		
	add_box.call(Vector3(4, 0, -12), Vector3(2, 2, 2))
	add_box.call(Vector3(30, 4, -15), Vector3(4, 2, 4))
	add_box.call(Vector3(30, 6, -15), Vector3(2, 2, 2))
	add_box.call(Vector3(-35, 4, -10), Vector3(2, 2, 2))
	
	# Dummies
	_build_dust2_dummies()
	
	# Combat Area Bounds
	# Envelops the playable space; centred so it fits around the CSG boundaries.
	# Deeper than the old 20 m box, which sat with its floor at y = 0 and so
	# never actually contained a player who had fallen below the map.
	CombatArea.add_to(self, Vector3(120, 70, 120), Vector3(0, 25, 0))

func _build_dust2_dummies() -> void:
	# Do not spawn dummies in real multiplayer matches
	var nm = get_node_or_null("/root/NetworkManager")
	if nm and nm.multiplayer.multiplayer_peer is ENetMultiplayerPeer:
		return
		
	var spawn_dummy = func(pos: Vector3, rot_y: float):
		var dummy = load("res://entities/killable_dummy.gd").new()
		dummy.position = pos
		dummy.rotation_degrees.y = rot_y
		add_child(dummy)
		
	# Mid Doors CT side looking out
	spawn_dummy.call(Vector3(0, 0, -20), 0)
	# A Long Corner looking towards doors
	spawn_dummy.call(Vector3(34, 0, 10), 180)
	# B Site Car
	spawn_dummy.call(Vector3(-30, 4, -5), 90)
	# A Site Goose
	spawn_dummy.call(Vector3(40, 4, -25), -135)