godot-camera-systems
godot camera systems
SKILL.md
Full skill instructions
Godot 4.7 Baseline
- Expert patterns in this skill target Godot 4.7+ (stable, 2026-06-18).
- Consult the Godot 4.7 migration guide when upgrading projects from 4.6.
- NEVER assume 4.6 defaults (stretch mode, audio area_mask, RichTextLabel percent flags) without checking 4.7 migration notes.
Camera Systems
Expert guidance for creating smooth, responsive cameras in 2D and 3D games.
NEVER Do
- NEVER use
global_position = target.global_positionevery frame — Instant position matching causes jittery movement. Uselerp()orposition_smoothing_enabled = true[12]. - NEVER use
offsetfor permanent camera positioning —offsetis for shake, sway, or temporary recoil effects only. Usepositionfor permanent framing to avoid logic conflicts [14]. - NEVER forget
limit_smoothed = trueforCamera2D— Hard boundaries cause jarring visual stops. Smoothing against limits ensures a professional feel [13]. - NEVER enable multiple
Camera2Dnodes in the same viewport simultaneously — Only the last enabled camera takes precedence. Explicitly disable inactive cameras [15]. - NEVER use
SpringArm3Dwithout a collision mask — It will clip through terrain and walls. Set it to the world/environment layer [16]. - NEVER implement screen shake by randomizing
positiondirectly — This overwrites follow-logic. Useoffsetor a dedicated Trauma/Noise system to Layer shake over the follow-position [27, 28]. - NEVER parent the Camera directly to a high-speed physics body — Physics stutter or parent rotation will cause motion sickness. Use
RemoteTransform2D/3Dwith rotation sync disabled for a stable view [30]. - NEVER use
look_at()in 3D without a fallback for the 'Up' vector — If the target is directly above/below, the camera will flip wildly. Use guards orQuaternionmath for vertical tracking. - NEVER rely on
SubViewportdefaults for Mini-maps — Viewports are expensive; explicitly setrender_target_update_modetoUPDATE_WHEN_VISIBLEor a fixed lower framerate to save GPU [156]. - NEVER use linear interpolation for Zoom — It feels 'robotic'. Use exponential lerp or a
TweenwithTRANS_CUBICfor a more natural tactical feel.
Available Scripts
MANDATORY: Read before implementing camera behaviors.
camera_shake_trauma_pro.gd
Advanced noise-based screenshake (Trauma system) for organic, non-jittery explosions and impacts.
cinematic_framing_logic.gd
Rule of Thirds and Lead Room management in code, ensuring high-quality cinematic composition.
camera_state_machine.gd
Managing transitions between 'Follow', 'Static', and 'Cinematic' camera states with Tweens.
minimap_viewport_manager.gd
SubViewport optimization for Mini-maps and UI overlays. Reduces render updates for better FPS.
split_screen_setup.gd
Dynamic split-screen architecture for local multiplayer, handling viewport stretching and audio listeners.
remote_transform_decoupling.gd
Decoupling camera position from player rotation/scale using RemoteTransform2D for high-speed stability.
zoom_damping_controller.gd
Non-linear, smooth zoom logic with tactical overview bounds and mouse-wheel support.
spring_lerp_camera_3d.gd
Physics-stable 3D follow camera using spring-mass interpolation to reduce follow-latency jitter.
first_person_sway.gd
Procedural 8-figure head bob and weapon sway logic for immersive First-Person systems.
deadzone_drag_margins.gd
Platformer-specific deadzone management using code to control follow-margins and drag-center behavior.
Camera2D Basics
extends Camera2D
@export var target: Node2D
@export var follow_speed := 5.0
func _process(delta: float) -> void:
if target:
global_position = global_position.lerp(
target.global_position,
follow_speed * delta
)
Position Smoothing
extends Camera2D
func _ready() -> void:
# Built-in smoothing
position_smoothing_enabled = true
position_smoothing_speed = 5.0
Camera Limits
extends Camera2D
func _ready() -> void:
# Constrain camera to level bounds
limit_left = 0
limit_top = 0
limit_right = 1920
limit_bottom = 1080
# Smooth against limits
limit_smoothed = true
Camera Shake
extends Camera2D
var shake_amount := 0.0
var shake_decay := 5.0
func _process(delta: float) -> void:
if shake_amount > 0:
shake_amount = max(shake_amount - shake_decay * delta, 0)
offset = Vector2(
randf_range(-shake_amount, shake_amount),
randf_range(-shake_amount, shake_amount)
)
else:
offset = Vector2.ZERO
func shake(intensity: float) -> void:
shake_amount = intensity
# Usage:
$Camera2D.shake(10.0) # Screen shake on explosion
Zoom Controls
extends Camera2D
@export var zoom_speed := 0.1
@export var min_zoom := 0.5
@export var max_zoom := 2.0
func _unhandled_input(event: InputEvent) -> void:
if event is InputEventMouseButton:
if event.button_index == MOUSE_BUTTON_WHEEL_UP:
zoom_in()
elif event.button_index == MOUSE_BUTTON_WHEEL_DOWN:
zoom_out()
func zoom_in() -> void:
zoom = zoom.move_toward(
Vector2.ONE * max_zoom,
zoom_speed
)
func zoom_out() -> void:
zoom = zoom.move_toward(
Vector2.ONE * min_zoom,
zoom_speed
)
Look-Ahead Camera
extends Camera2D
@export var look_ahead_distance := 50.0
@export var target: CharacterBody2D
func _process(delta: float) -> void:
if target:
var look_ahead := target.velocity.normalized() * look_ahead_distance
global_position = target.global_position + look_ahead
Split-Screen (Multiple Cameras)
# Player 1 Camera
@onready var cam1: Camera2D = $Player1/Camera2D
# Player 2 Camera
@onready var cam2: Camera2D = $Player2/Camera2D
func _ready() -> void:
# Split viewport
cam1.anchor_mode = Camera2D.ANCHOR_MODE_DRAG_CENTER
cam2.anchor_mode = Camera2D.ANCHOR_MODE_DRAG_CENTER
Camera3D Patterns
Third-Person Camera
extends Camera3D
@export var target: Node3D
@export var distance := 5.0
@export var height := 2.0
@export var rotation_speed := 3.0
var rotation_angle := 0.0
func _process(delta: float) -> void:
if not target:
return
# Rotate around target
rotation_angle += Input.get_axis("camera_left", "camera_right") * rotation_speed * delta
# Calculate position
var offset := Vector3(
sin(rotation_angle) * distance,
height,
cos(rotation_angle) * distance
)
global_position = target.global_position + offset
look_at(target.global_position, Vector3.UP)
First-Person Camera
extends Camera3D
@export var mouse_sensitivity := 0.002
@export var max_pitch := deg_to_rad(80)
var pitch := 0.0
func _ready() -> void:
Input.mouse_mode = Input.MOUSE_MODE_CAPTURED
func _input(event: InputEvent) -> void:
if event is InputEventMouseMotion:
# Yaw (horizontal)
get_parent().rotate_y(-event.relative.x * mouse_sensitivity)
# Pitch (vertical)
pitch -= event.relative.y * mouse_sensitivity
pitch = clamp(pitch, -max_pitch, max_pitch)
rotation.x = pitch
Camera Transitions
# Smooth camera position change
func move_to_position(target_pos: Vector2, duration: float = 1.0) -> void:
var tween := create_tween()
tween.tween_property(self, "global_position", target_pos, duration)
tween.set_ease(Tween.EASE_IN_OUT)
tween.set_trans(Tween.TRANS_CUBIC)
Cinematic Cameras
# Camera path following
extends Path2D
@onready var path_follow: PathFollow2D = $PathFollow2D
@onready var camera: Camera2D = $PathFollow2D/Camera2D
func play_cutscene(duration: float) -> void:
var tween := create_tween()
tween.tween_property(path_follow, "progress_ratio", 1.0, duration)
await tween.finished
Best Practices
1. One Active Camera
# Only one Camera2D should be enabled at a time
# Others should have enabled = false
2. Parent Camera to Player
# Scene structure:
# Player (CharacterBody2D)
# └─ Camera2D
3. Use Anchors for UI
# Camera doesn't affect UI positioned with anchors
# UI stays in screen space
4. Deadzone for Platformers
extends Camera2D
func _ready() -> void:
drag_horizontal_enabled = true
drag_vertical_enabled = true
drag_left_margin = 0.3
drag_right_margin = 0.3
Expert Camera Architectures
1. Camera Framing Box (Multi-Target Framing)
To handle multiple targets in a single frame (e.g., Smash Bros or Local-Coop), calculate the AABB (Axis-Aligned Bounding Box) of all targets. Interpolate the camera's global_position to the center of the box and adjust the zoom (2D) or distance (3D) to encapsulate the entire box with a padding margin.
class_name FramingBoxCamera2D extends Camera2D
## Dynamically zooms and pans to frame multiple targets.
@export var targets: Array[Node2D] = []
@export var margin: float = 100.0
@export var min_zoom: float = 0.5
@export var max_zoom: float = 2.0
func _physics_process(_delta: float) -> void:
if targets.is_empty(): return
# 1. Calculate the bounding box of all targets.
var rect := Rect2(targets[0].global_position, Vector2.ZERO)
for target in targets:
rect = rect.expand(target.global_position)
# 2. Add padding.
rect = rect.grow(margin)
# 3. Position the camera at the center.
global_position = rect.get_center()
# 4. Calculate required zoom level to fit the box.
var screen_size := get_viewport_rect().size
var zoom_x := screen_size.x / rect.size.x
var zoom_y := screen_size.y / rect.size.y
var target_zoom := clampf(min(zoom_x, zoom_y), min_zoom, max_zoom)
zoom = Vector2.ONE * target_zoom
2. Camera Raycasting (SpringArm3D / RayCast3D)
To prevent the camera from clipping through terrain in 3D, use a SpringArm3D node. For custom camera logic, query the physics space directly using intersect_ray(). This allows you to smoothly interpolate the camera closer to the player when an obstruction (e.g., a wall) is detected between the camera's desired position and the target.
class_name OcclusionAwareCamera3D extends Camera3D
## Prevents camera clipping via manual physics space raycasting.
@export var target: Node3D
@export var ideal_distance: float = 5.0
func _physics_process(_delta: float) -> void:
if not target: return
var space_state := get_world_3d().direct_space_state
var desired_pos := target.global_position + (Vector3.BACK * ideal_distance)
# Query for obstructions between the target and the desired camera position.
var query := PhysicsRayQueryParameters3D.create(target.global_position, desired_pos)
query.exclude = [target.get_rid()]
var result: Dictionary = space_state.intersect_ray(query)
if not result.is_empty():
# Move the camera to the hit position (with a small offset to prevent clipping).
global_position = result.position + result.normal * 0.2
else:
global_position = desired_pos
look_at(target.global_position)
3. Screenshake Audit (Trauma Decay Profiler)
A "Screenshake Audit" involves visualizing the trauma-decay curve over time. By plotting the current_trauma value to a graph using the CanvasItem._draw() API, you can precisely tune the "punchiness" and "decay duration" of impacts to ensure they feel intentional rather than random noise.
class_name TraumaDebugger extends Node2D
## Visualizes the decay curve of a trauma-based shake system.
@export var camera: ProceduralScreenShake
var _history: PackedFloat32Array = []
func _process(_delta: float) -> void:
if not camera: return
_history.append(camera.get_current_trauma())
if _history.size() > 200: _history.remove_at(0)
queue_redraw()
func _draw() -> void:
var width := 400.0
var height := 100.0
var step := width / 200.0
for i in range(1, _history.size()):
var p1 := Vector2(i * step, height - (_history[i-1] * height))
var p2 := Vector2((i+1) * step, height - (_history[i] * height))
draw_line(p1, p2, Color.YELLOW, 2.0)
Reference
Related
- Master Skill: godot-master
