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Create Samplers
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11 changed files with 81 additions and 125 deletions
11
behaviours/sampler.gd
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11
behaviours/sampler.gd
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extends Node
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class_name Sampler
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## Abstract base class for sampling a certain reference among multiple.
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## Get a reference.
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func sample() -> Object:
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Log.e(self, "Not implemented.")
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return null
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8
behaviours/sampler_priority.gd
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8
behaviours/sampler_priority.gd
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extends Sampler
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class_name SamplerPriority
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## Always sample the object with the highest priority in the queue.
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## TODO
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6
behaviours/sampler_priority.tscn
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6
behaviours/sampler_priority.tscn
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[gd_scene load_steps=2 format=3 uid="uid://djcwis8ycrq85"]
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[ext_resource type="Script" path="res://behaviours/sampler_priority.gd" id="1_jy5r5"]
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[node name="SamplerPriority" type="Node"]
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script = ExtResource("1_jy5r5")
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14
behaviours/sampler_random.gd
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behaviours/sampler_random.gd
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extends Sampler
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class_name SamplerRandom
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## Sample a random reference from the array.
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@export var possibilities: Array = []
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func sample() -> Object:
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if len(possibilities) == 0:
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return null
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return Random.sample(possibilities)
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6
behaviours/sampler_random.tscn
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6
behaviours/sampler_random.tscn
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[gd_scene load_steps=2 format=3 uid="uid://dtiuw54ss376d"]
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[ext_resource type="Script" path="res://behaviours/sampler_random.gd" id="1_geacn"]
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[node name="SamplerRandom" type="Node"]
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script = ExtResource("1_geacn")
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30
behaviours/sampler_weighted.gd
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behaviours/sampler_weighted.gd
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extends Sampler
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class_name SamplerWeighted
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## Sample a random reference from the array, considering the given weights.
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@export var possibilities: Array = []
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@export var weights: Array[int] = []
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func sample() -> Object:
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var total = compute_total_weight()
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if total == 0:
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return null
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var sampled = Random.rng.randi_range(0, total - 1)
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var idx = -1
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while sampled >= 0:
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idx += 1
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sampled -= weights[idx]
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return possibilities[idx]
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func compute_total_weight() -> int:
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var total = 0
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for weight in weights:
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if weight < 0:
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Log.e(self, "Weight with negative value detected.")
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return 0
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total += weight
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return total
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6
behaviours/sampler_weighted.tscn
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6
behaviours/sampler_weighted.tscn
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[gd_scene load_steps=2 format=3 uid="uid://d2ftjun7wdif0"]
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[ext_resource type="Script" path="res://behaviours/sampler_weighted.gd" id="1_hhnbk"]
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[node name="SamplerWeighted" type="Node"]
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script = ExtResource("1_hhnbk")
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@icon("res://behaviours/spawner_choice.svg")
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extends Node
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class_name SpawnerChoice
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## Randomly choose a [Spawner] to use from [field spawners] considering [field weights].
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##
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## If a null [Spawner] is selected, nothing is spawned.
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@export var spawners: Array[Spawner] = []
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@export var weights: Array[int] = []
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func compute_total_weight() -> int:
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var total = 0
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for weight in weights:
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if weight < 0:
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Log.e(self, "Weight with negative value detected.")
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total += weight
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return total
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func select_spawner() -> Spawner:
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var total = compute_total_weight()
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var sampled = Random.rng.randi_range(0, total - 1)
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var idx = -1
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while sampled >= 0:
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idx += 1
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sampled -= weights[idx]
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return spawners[idx]
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func spawn():
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var spawner = select_spawner()
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if spawner != null:
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spawner.spawn()
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func _ready():
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if len(spawners) != len(weights):
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Log.e(self, "Spawners and weights are different lengths.")
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if compute_total_weight() <= 0:
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Log.e(self, "Weight total is less or equal to 0.")
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<svg
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viewBox="0 0 640 640"
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version="1.1"
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id="svg1"
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sodipodi:docname="spawner_choice.svg"
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width="16"
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height="16"
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inkscape:version="1.3.2 (091e20ef0f, 2023-11-25, custom)"
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xml:space="preserve"
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xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
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xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
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xmlns="http://www.w3.org/2000/svg"
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xmlns:svg="http://www.w3.org/2000/svg"><defs
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id="defs1" /><sodipodi:namedview
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id="namedview1"
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pagecolor="#ffffff"
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bordercolor="#000000"
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borderopacity="0.25"
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inkscape:showpageshadow="2"
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inkscape:pageopacity="0.0"
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inkscape:pagecheckerboard="0"
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inkscape:deskcolor="#d1d1d1"
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inkscape:zoom="26.34375"
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inkscape:cx="6.3582444"
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inkscape:cy="10.192171"
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inkscape:window-width="1920"
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inkscape:window-height="1020"
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inkscape:window-x="3200"
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inkscape:window-y="32"
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inkscape:window-maximized="1"
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Before Width: | Height: | Size: 2.5 KiB |
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[remap]
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importer="texture"
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type="CompressedTexture2D"
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uid="uid://c0f5nbe7lhib6"
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path="res://.godot/imported/spawner_choice.svg-91bce9cbbb63e3eb7738ffe03834ed28.ctex"
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metadata={
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"vram_texture": false
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}
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[deps]
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source_file="res://behaviours/spawner_choice.svg"
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dest_files=["res://.godot/imported/spawner_choice.svg-91bce9cbbb63e3eb7738ffe03834ed28.ctex"]
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[params]
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compress/mode=0
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compress/high_quality=false
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compress/lossy_quality=0.7
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compress/hdr_compression=1
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compress/normal_map=0
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compress/channel_pack=0
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mipmaps/generate=false
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mipmaps/limit=-1
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roughness/mode=0
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roughness/src_normal=""
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process/fix_alpha_border=true
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process/premult_alpha=false
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process/normal_map_invert_y=false
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process/hdr_as_srgb=false
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process/hdr_clamp_exposure=false
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process/size_limit=0
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detect_3d/compress_to=1
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svg/scale=1.0
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editor/scale_with_editor_scale=false
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editor/convert_colors_with_editor_theme=false
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[gd_scene load_steps=2 format=3 uid="uid://cokdfsk6rgeup"]
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[ext_resource type="Script" path="res://behaviours/spawner_choice.gd" id="1_jkwdb"]
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[node name="SpawnerChoice" type="Node"]
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script = ExtResource("1_jkwdb")
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