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Merge pull request #28 from Tylermarques/bugfix/panning-jumps

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bugfix/panning jumps
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AlxAI 2025-05-13 18:53:52 -04:00 • committed by GitHub
commit 8d5aee2fd2
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GPG key ID: B5690EEEBB952194
1 changed files with 11 additions and 31 deletions
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42
ai_animation/src/main.ts
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@ -83,10 +83,10 @@ function initScene() {
function createCameraPan(): Group {
// Create a target object to store the desired camera position
const cameraTarget = { x: gameState.camera.position.x, y: gameState.camera.position.y, z: gameState.camera.position.z };
const cameraStart = { x: gameState.camera.position.x, y: gameState.camera.position.y, z: gameState.camera.position.z };
// Move from the starting camera position to the left side of the map
let moveToStartSweepAnim = new Tween(cameraTarget).to({
let moveToStartSweepAnim = new Tween(cameraStart).to({
x: -400,
y: 500,
z: 1000
@ -95,9 +95,10 @@ function createCameraPan(): Group {
gameState.camera.position.lerp(new THREE.Vector3(target.x, target.y, target.z), 0.1);
});
let cameraSweepOperation = new Tween({ timeStep: 0 }).to({
timeStep: Math.PI
}, 20000)
let cameraSweepOperation = new Tween({ timeStep: 0 })
.to({
timeStep: Math.PI
}, 20000)
.onUpdate((tweenObj) => {
let radius = 2200;
// Calculate the target position
@ -105,16 +106,9 @@ function createCameraPan(): Group {
const targetY = 500 + 200 * Math.sin(tweenObj.timeStep);
const targetZ = 1000 + 900 * Math.sin(tweenObj.timeStep);
// Update the target object
cameraTarget.x = targetX;
cameraTarget.y = targetY;
cameraTarget.z = targetZ;
// Use smooth interpolation to avoid jumps
gameState.camera.position.lerp(new THREE.Vector3(targetX, targetY, targetZ), 0.05);
gameState.camera.position.set(targetX, targetY, targetZ);
})
// .easing(Easing.Quadratic.InOut)
.yoyo(true).repeat(Infinity);
.easing(Easing.Quadratic.InOut).yoyo(true).repeat(Infinity);
moveToStartSweepAnim.chain(cameraSweepOperation);
moveToStartSweepAnim.start();
@ -134,29 +128,15 @@ function animate() {
if (gameState.isPlaying) {
// Update the camera angle
// FIXME: This has to call the update functino twice inorder to avoid a bug in Tween.js, see here https://github.com/tweenjs/tween.js/issues/677
gameState.cameraPanAnim.update();
gameState.cameraPanAnim.update();
} else {
// Manual camera controls when not in playback mode
gameState.camControls.update();
}
// Instead of throwing an error, smoothly interpolate if jump is too large
const jumpThreshold = 20;
if (Math.abs(prevPos.x - gameState.camera.position.x) > jumpThreshold ||
Math.abs(prevPos.y - gameState.camera.position.y) > jumpThreshold ||
Math.abs(prevPos.z - gameState.camera.position.z) > jumpThreshold) {
console.warn("Large camera position jump detected, smoothing transition");
// Interpolate to avoid the jump
gameState.camera.position.lerp(
new THREE.Vector3(
prevPos.x + Math.sign(gameState.camera.position.x - prevPos.x) * jumpThreshold,
gameState.camera.position.y,
gameState.camera.position.z
),
0.5
);
}
// Check if all animations are complete
if (gameState.unitAnimations.length > 0) {
// Filter out completed animations