Merge pull request 'added Mouse Look node for FSP style movement of object like camera...' (#89) from wuaieyo/LNXSDK:main into main
Reviewed-on: #89
This commit is contained in:
232
leenkx/Sources/leenkx/logicnode/MouseLookNode.hx
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232
leenkx/Sources/leenkx/logicnode/MouseLookNode.hx
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package leenkx.logicnode;
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import iron.math.Vec4;
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import iron.system.Input;
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import iron.object.Object;
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import kha.System;
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import kha.FastFloat;
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class MouseLookNode extends LogicNode {
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// Note: This implementation works in degrees internally and converts to radians only when applying rotations
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// Sub-pixel interpolation is always enabled for optimal precision
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// Features: Resolution-adaptive scaling and precise low-sensitivity support
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public var property0: String; // Front axis
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public var property1: Bool; // Center Mouse
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public var property2: Bool; // Invert X
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public var property3: Bool; // Invert Y
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public var property4: Bool; // Cap Left/Right
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public var property5: Bool; // Cap Up/Down
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// New strategy toggles
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public var property6: Bool; // Resolution-Adaptive Scaling
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// Smoothing variables
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var smoothX: FastFloat = 0.0;
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var smoothY: FastFloat = 0.0;
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// Capping limits (in degrees)
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var maxHorizontal: FastFloat = 180.0; // 180 degrees
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var maxVertical: FastFloat = 90.0; // 90 degrees
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// Current accumulated rotations for capping
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var currentHorizontal: FastFloat = 0.0;
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var currentVertical: FastFloat = 0.0;
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// Sub-pixel interpolation accumulators
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var accumulatedHorizontalRotation: FastFloat = 0.0;
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var accumulatedVerticalRotation: FastFloat = 0.0;
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var minimumRotationThreshold: FastFloat = 0.01; // degrees (was 0.0001 radians)
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// Frame rate independence removed - not applicable to mouse input
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// Resolution adaptive scaling
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var baseResolutionWidth: FastFloat = 1920.0;
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var baseResolutionHeight: FastFloat = 1080.0;
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public function new(tree: LogicTree) {
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super(tree);
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}
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override function run(from: Int) {
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var bodyObject: Object = inputs[1].get();
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var headObject: Object = inputs[2].get();
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var sensitivity: FastFloat = inputs[3].get();
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var smoothing: FastFloat = inputs[4].get();
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if (bodyObject == null) {
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runOutput(0);
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return;
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}
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var mouse = Input.getMouse();
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// Handle mouse centering/locking
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if (property1) {
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if (mouse.started() && !mouse.locked) {
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mouse.lock();
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}
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}
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// Only process if mouse is active
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if (!mouse.locked && !mouse.down()) {
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runOutput(0);
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return;
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}
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// Get mouse movement deltas
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var deltaX: FastFloat = mouse.movementX;
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var deltaY: FastFloat = mouse.movementY;
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// Note: Sensitivity will be applied later to preserve precision for small movements
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// Apply inversion
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if (property2) deltaX = -deltaX;
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if (property3) deltaY = -deltaY;
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// Strategy 1: Resolution-Adaptive Scaling
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var resolutionMultiplier: FastFloat = 1.0;
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if (property6) {
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var currentWidth = System.windowWidth();
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var currentHeight = System.windowHeight();
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resolutionMultiplier = (currentWidth / baseResolutionWidth) * (currentHeight / baseResolutionHeight);
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resolutionMultiplier = Math.sqrt(resolutionMultiplier); // Take square root to avoid over-scaling
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}
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// Frame Rate Independence disabled for mouse input - mouse deltas are inherently frame-rate independent
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// Apply smoothing
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if (smoothing > 0.0) {
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var smoothFactor = 1.0 - Math.min(smoothing, 0.99); // Prevent complete smoothing
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smoothX = smoothX * smoothing + deltaX * smoothFactor;
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smoothY = smoothY * smoothing + deltaY * smoothFactor;
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deltaX = smoothX;
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deltaY = smoothY;
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}
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// Determine rotation axes based on front axis setting
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var horizontalAxis = new Vec4();
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var verticalAxis = new Vec4();
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switch (property0) {
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case "X": // X is front
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horizontalAxis.set(0, 0, 1); // Z axis for horizontal (yaw)
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verticalAxis.set(0, 1, 0); // Y axis for vertical (pitch)
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case "Y": // Y is front (default)
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#if lnx_yaxisup
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horizontalAxis.set(0, 0, 1); // Z axis for horizontal (yaw)
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verticalAxis.set(1, 0, 0); // X axis for vertical (pitch)
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#else
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horizontalAxis.set(0, 0, 1); // Z axis for horizontal (yaw)
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verticalAxis.set(1, 0, 0); // X axis for vertical (pitch)
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#end
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case "Z": // Z is front
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horizontalAxis.set(0, 1, 0); // Y axis for horizontal (yaw)
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verticalAxis.set(1, 0, 0); // X axis for vertical (pitch)
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}
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// Base scaling
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var baseScale: FastFloat = 1500.0;
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var finalScale = baseScale;
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// Apply resolution scaling
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if (property6) {
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finalScale *= resolutionMultiplier;
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}
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// Apply sensitivity scaling after all enhancement strategies to preserve precision
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deltaX *= sensitivity;
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deltaY *= sensitivity;
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// Calculate rotation amounts (in degrees)
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var horizontalRotation: FastFloat = (-deltaX / finalScale) * 180.0 / Math.PI;
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var verticalRotation: FastFloat = (-deltaY / finalScale) * 180.0 / Math.PI;
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// Note: Frame rate independence removed for mouse input as mouse deltas
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// are already frame-rate independent by nature. Mouse input represents
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// instantaneous user intent, not time-based movement.
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// Strategy 2: Sub-Pixel Interpolation (always enabled)
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accumulatedHorizontalRotation += horizontalRotation;
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accumulatedVerticalRotation += verticalRotation;
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// Only apply rotation if accumulated amount exceeds threshold
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if (Math.abs(accumulatedHorizontalRotation) >= minimumRotationThreshold) {
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horizontalRotation = accumulatedHorizontalRotation;
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accumulatedHorizontalRotation = 0.0;
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} else {
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horizontalRotation = 0.0;
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}
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if (Math.abs(accumulatedVerticalRotation) >= minimumRotationThreshold) {
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verticalRotation = accumulatedVerticalRotation;
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accumulatedVerticalRotation = 0.0;
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} else {
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verticalRotation = 0.0;
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}
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// Apply capping constraints
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if (property4) { // Cap Left/Right
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currentHorizontal += horizontalRotation;
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if (currentHorizontal > maxHorizontal) {
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horizontalRotation -= (currentHorizontal - maxHorizontal);
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currentHorizontal = maxHorizontal;
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} else if (currentHorizontal < -maxHorizontal) {
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horizontalRotation -= (currentHorizontal + maxHorizontal);
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currentHorizontal = -maxHorizontal;
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}
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}
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if (property5) { // Cap Up/Down
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currentVertical += verticalRotation;
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if (currentVertical > maxVertical) {
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verticalRotation -= (currentVertical - maxVertical);
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currentVertical = maxVertical;
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} else if (currentVertical < -maxVertical) {
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verticalRotation -= (currentVertical + maxVertical);
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currentVertical = -maxVertical;
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}
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}
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// Apply horizontal rotation to body (yaw)
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if (Math.abs(horizontalRotation) > 0.01) { // 0.01 degrees threshold
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bodyObject.transform.rotate(horizontalAxis, horizontalRotation * Math.PI / 180.0); // Convert degrees to radians
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// Sync physics if needed
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#if lnx_physics
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var rigidBody = bodyObject.getTrait(leenkx.trait.physics.RigidBody);
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if (rigidBody != null) rigidBody.syncTransform();
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#end
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}
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// Apply vertical rotation to head (pitch) if head object is provided
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if (headObject != null && Math.abs(verticalRotation) > 0.01) { // 0.01 degrees threshold
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// For head rotation, use the head's local coordinate system
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var headVerticalAxis = headObject.transform.world.right();
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headObject.transform.rotate(headVerticalAxis, verticalRotation * Math.PI / 180.0); // Convert degrees to radians
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// Sync physics if needed
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#if lnx_physics
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var headRigidBody = headObject.getTrait(leenkx.trait.physics.RigidBody);
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if (headRigidBody != null) headRigidBody.syncTransform();
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#end
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} else if (headObject == null) {
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// If no head object, apply vertical rotation to body as well
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if (Math.abs(verticalRotation) > 0.01) { // 0.01 degrees threshold
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bodyObject.transform.rotate(verticalAxis, verticalRotation * Math.PI / 180.0); // Convert degrees to radians
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// Sync physics if needed
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#if lnx_physics
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var rigidBody = bodyObject.getTrait(leenkx.trait.physics.RigidBody);
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if (rigidBody != null) rigidBody.syncTransform();
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#end
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}
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}
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runOutput(0);
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}
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}
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101
leenkx/blender/lnx/logicnode/input/LN_mouse_look.py
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101
leenkx/blender/lnx/logicnode/input/LN_mouse_look.py
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@ -0,0 +1,101 @@
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from lnx.logicnode.lnx_nodes import *
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class MouseLookNode(LnxLogicTreeNode):
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"""Controls object rotation based on mouse movement for FPS-style camera control.
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Features:
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- Sub-pixel interpolation (always enabled) for optimal precision and smooth low-sensitivity movement
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- Resolution-adaptive scaling for consistent feel across different screen resolutions
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"""
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bl_idname = 'LNMouseLookNode'
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bl_label = 'Mouse Look'
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lnx_section = 'mouse'
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lnx_version = 1
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# Front axis property
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property0: HaxeEnumProperty(
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'property0',
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items=[('X', 'X Axis', 'X Axis as front'),
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('Y', 'Y Axis', 'Y Axis as front'),
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('Z', 'Z Axis', 'Z Axis as front')],
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name='Front', default='Y')
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# Hide Locked property
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property1: HaxeBoolProperty(
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'property1',
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name='Hide Locked',
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description='Automatically center and lock the mouse cursor',
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default=True)
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# Invert X property
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property2: HaxeBoolProperty(
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'property2',
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name='Invert X',
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description='Invert horizontal mouse movement',
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default=False)
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# Invert Y property
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property3: HaxeBoolProperty(
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'property3',
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name='Invert Y',
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description='Invert vertical mouse movement',
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default=False)
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# Cap Left/Right property
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property4: HaxeBoolProperty(
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'property4',
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name='Cap Left / Right',
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description='Limit horizontal rotation',
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default=False)
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# Cap Up/Down property
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property5: HaxeBoolProperty(
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'property5',
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name='Cap Up / Down',
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description='Limit vertical rotation',
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default=True)
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# Strategy toggles
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property6: HaxeBoolProperty(
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'property6',
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name='Resolution Adaptive',
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description='Scale sensitivity based on screen resolution',
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default=False)
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def lnx_init(self, context):
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self.add_input('LnxNodeSocketAction', 'In')
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self.add_input('LnxNodeSocketObject', 'Body')
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self.add_input('LnxNodeSocketObject', 'Head')
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self.add_input('LnxFloatSocket', 'Sensitivity', default_value=0.5)
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self.add_input('LnxFloatSocket', 'Smoothing', default_value=0.0)
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self.add_output('LnxNodeSocketAction', 'Out')
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def draw_buttons(self, context, layout):
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layout.prop(self, 'property0', text='Front')
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layout.prop(self, 'property1', text='Hide Locked')
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# Invert XY section
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col = layout.column(align=True)
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col.label(text="Invert XY:")
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row = col.row(align=True)
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row.prop(self, 'property2', text='X', toggle=True)
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row.prop(self, 'property3', text='Y', toggle=True)
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# Cap rotations section
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col = layout.column(align=True)
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col.prop(self, 'property4', text='Cap Left / Right')
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col.prop(self, 'property5', text='Cap Up / Down')
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# Separator
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layout.separator()
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# Enhancement strategies section
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col = layout.column(align=True)
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col.label(text="Enhancement Strategies:")
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col.prop(self, 'property6', text='Resolution Adaptive')
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