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Code Issues Releases Activity

Use the proper translation values when mapping animations

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Eclipse
2025-10-20 08:36:05 +00:00
parent a69c289947
commit e5c2d5d435
1 changed files with 7 additions and 3 deletions
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10
rainbow/src/main/java/org/geysermc/rainbow/mapping/animation/AnimationMapper.java
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@@ -13,15 +13,19 @@ public class AnimationMapper {
// These transformations aren't perfect... but I spent over 4 hours trying to get these. It's good enough for me.
public static BedrockAnimationContext mapAnimation(String identifier, String bone, ItemTransforms transforms) {
// Note that translations are multiplied by 0.0625 after reading on Java, so we have to divide by that here
// I don't think it's possible to display separate animations for left- and right hands
ItemTransform firstPerson = transforms.firstPersonRightHand();
Vector3f firstPersonPosition = FIRST_PERSON_POSITION_OFFSET.add(firstPerson.translation(), new Vector3f());
Vector3f firstPersonPosition = firstPerson.translation().div(0.0625F, new Vector3f()).add(FIRST_PERSON_POSITION_OFFSET);
Vector3f firstPersonRotation = FIRST_PERSON_ROTATION_OFFSET.add(firstPerson.rotation(), new Vector3f());
Vector3f firstPersonScale = new Vector3f(firstPerson.scale());
ItemTransform thirdPerson = transforms.thirdPersonRightHand();
// Translation Y/Z axes are swapped on bedrock, bedrock displays the model lower than Java does, and the X/Y axes (Java) is inverted on bedrock
Vector3f thirdPersonPosition = new Vector3f(-thirdPerson.translation().x(), 10.0F + thirdPerson.translation().z(), -thirdPerson.translation().y());
// Also the model appears lower on bedrock so we need to add 10 on the Y axis here
Vector3f thirdPersonTranslation = thirdPerson.translation().div(0.0625F, new Vector3f());
Vector3f thirdPersonPosition = new Vector3f(-thirdPersonTranslation.x(), 10.0F + thirdPersonTranslation.z(), -thirdPersonTranslation.y());
// Rotation X/Y axes are inverted on bedrock, bedrock needs a +90-degree rotation on the X axis, and I couldn't figure out how the Z axis works
Vector3f thirdPersonRotation = new Vector3f(-thirdPerson.rotation().x() + 90.0F, -thirdPerson.rotation().y(), 0.0F);
Vector3f thirdPersonScale = new Vector3f(thirdPerson.scale());
@@ -30,7 +34,7 @@ public class AnimationMapper {
ItemTransform head = transforms.head();
// Add a base translation of 20 on the Y axis as bedrock displays the item at the player's feet
// Translation is inverted on the X axis
Vector3f headPosition = head.translation().mul(-0.655F, 0.655F, 0.655F, new Vector3f()).add(0.0F, 20.0F, 0.0F);
Vector3f headPosition = head.translation().div(0.0625F, new Vector3f()).mul(-0.655F, 0.655F, 0.655F).add(0.0F, 20.0F, 0.0F);
// Rotation is inverted on the X and Y axis
Vector3f headRotation = new Vector3f(-head.rotation().x(), -head.rotation().y(), head.rotation().z());
Vector3f headScale = head.scale().mul(0.655F, new Vector3f());