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Additional collision style

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Signed-off-by: TheMode <themode@outlook.fr>
This commit is contained in:
TheMode 2022-05-17 18:35:38 +02:00
parent 83ff0daff7
commit 367c389bc6
1 changed files with 26 additions and 28 deletions
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54
src/main/java/net/minestom/server/collision/BlockCollision.java
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@ -204,20 +204,16 @@ final class BlockCollision {
}
private static PhysicsResult handlePhysics(@NotNull BoundingBox boundingBox,
@NotNull Vec deltaPosition, Pos entityPosition,
@NotNull Vec velocity, Pos entityPosition,
@NotNull Block.Getter getter,
@NotNull Vec[] allFaces,
@NotNull SweepResult finalResult) {
double remainingX = deltaPosition.x();
double remainingY = deltaPosition.y();
double remainingZ = deltaPosition.z();
// If the movement is small we don't need to run the expensive ray casting.
// Positions of move less than one can have hardcoded blocks to check for every direction
if (deltaPosition.length() < 1) {
if (velocity.length() < 1) {
for (Vec point : allFaces) {
Vec pointBefore = point.add(entityPosition);
Vec pointAfter = point.add(entityPosition).add(deltaPosition);
final Vec pointBefore = point.add(entityPosition);
final Vec pointAfter = point.add(entityPosition).add(velocity);
// Entity can pass through up to 4 blocks. Starting block, Two intermediate blocks, and a final block.
// This means we must check every combination of block movements when an entity moves over an axis.
// 000, 001, 010, 011, etc.
@ -225,63 +221,65 @@ final class BlockCollision {
// Checks can be limited by checking if we moved across an axis line
// Pass through (0, 0, 0)
checkBoundingBox(pointBefore.blockX(), pointBefore.blockY(), pointBefore.blockZ(), deltaPosition, entityPosition, boundingBox, getter, finalResult);
checkBoundingBox(pointBefore.blockX(), pointBefore.blockY(), pointBefore.blockZ(), velocity, entityPosition, boundingBox, getter, finalResult);
if (pointBefore.blockX() != pointAfter.blockX()) {
// Pass through (+1, 0, 0)
checkBoundingBox(pointAfter.blockX(), pointBefore.blockY(), pointBefore.blockZ(), deltaPosition, entityPosition, boundingBox, getter, finalResult);
checkBoundingBox(pointAfter.blockX(), pointBefore.blockY(), pointBefore.blockZ(), velocity, entityPosition, boundingBox, getter, finalResult);
// Checks for moving through 4 blocks
if (pointBefore.blockY() != pointAfter.blockY())
// Pass through (+1, +1, 0)
checkBoundingBox(pointAfter.blockX(), pointAfter.blockY(), pointBefore.blockZ(), deltaPosition, entityPosition, boundingBox, getter, finalResult);
checkBoundingBox(pointAfter.blockX(), pointAfter.blockY(), pointBefore.blockZ(), velocity, entityPosition, boundingBox, getter, finalResult);
if (pointBefore.blockZ() != pointAfter.blockZ())
// Pass through (+1, 0, +1)
checkBoundingBox(pointAfter.blockX(), pointBefore.blockY(), pointAfter.blockZ(), deltaPosition, entityPosition, boundingBox, getter, finalResult);
checkBoundingBox(pointAfter.blockX(), pointBefore.blockY(), pointAfter.blockZ(), velocity, entityPosition, boundingBox, getter, finalResult);
}
if (pointBefore.blockY() != pointAfter.blockY()) {
// Pass through (0, +1, 0)
checkBoundingBox(pointBefore.blockX(), pointAfter.blockY(), pointBefore.blockZ(), deltaPosition, entityPosition, boundingBox, getter, finalResult);
checkBoundingBox(pointBefore.blockX(), pointAfter.blockY(), pointBefore.blockZ(), velocity, entityPosition, boundingBox, getter, finalResult);
// Checks for moving through 4 blocks
if (pointBefore.blockZ() != pointAfter.blockZ())
// Pass through (0, +1, +1)
checkBoundingBox(pointBefore.blockX(), pointAfter.blockY(), pointAfter.blockZ(), deltaPosition, entityPosition, boundingBox, getter, finalResult);
checkBoundingBox(pointBefore.blockX(), pointAfter.blockY(), pointAfter.blockZ(), velocity, entityPosition, boundingBox, getter, finalResult);
}
if (pointBefore.blockZ() != pointAfter.blockZ()) {
// Pass through (0, 0, +1)
checkBoundingBox(pointBefore.blockX(), pointBefore.blockY(), pointAfter.blockZ(), deltaPosition, entityPosition, boundingBox, getter, finalResult);
checkBoundingBox(pointBefore.blockX(), pointBefore.blockY(), pointAfter.blockZ(), velocity, entityPosition, boundingBox, getter, finalResult);
}
// Pass through (+1, +1, +1)
if (pointBefore.blockX() != pointAfter.blockX()
&& pointBefore.blockY() != pointAfter.blockY()
&& pointBefore.blockZ() != pointAfter.blockZ())
checkBoundingBox(pointAfter.blockX(), pointAfter.blockY(), pointAfter.blockZ(), deltaPosition, entityPosition, boundingBox, getter, finalResult);
checkBoundingBox(pointAfter.blockX(), pointAfter.blockY(), pointAfter.blockZ(), velocity, entityPosition, boundingBox, getter, finalResult);
}
} else {
// When large moves are done we need to ray-cast to find all blocks that could intersect with the movement
for (Vec point : allFaces) {
RayUtils.RaycastCollision(deltaPosition, point.add(entityPosition), getter, boundingBox, entityPosition, finalResult);
RayUtils.RaycastCollision(velocity, point.add(entityPosition), getter, boundingBox, entityPosition, finalResult);
}
}
final boolean collisionX = finalResult.normalX != 0;
final boolean collisionY = finalResult.normalY != 0;
final boolean collisionZ = finalResult.normalZ != 0;
final double finalX = entityPosition.x() + finalResult.res * remainingX;
final double finalY = entityPosition.y() + finalResult.res * remainingY;
final double finalZ = entityPosition.z() + finalResult.res * remainingZ;
final double deltaX = finalResult.res * velocity.x();
final double deltaY = finalResult.res * velocity.y();
final double deltaZ = finalResult.res * velocity.z();
final boolean collisionX = finalResult.normalX != 0, collisionY = finalResult.normalY != 0, collisionZ = finalResult.normalZ != 0;
// Remaining delta
remainingX = collisionX ? 0 : remainingX - finalResult.res * remainingX;
remainingY = collisionY ? 0 : remainingY - finalResult.res * remainingY;
remainingZ = collisionZ ? 0 : remainingZ - finalResult.res * remainingZ;
final Pos finalPos = entityPosition.add(deltaX, deltaY, deltaZ);
return new PhysicsResult(new Pos(finalX, finalY, finalZ),
new Vec(remainingX, remainingY, remainingZ), collisionY,
collisionX, collisionY, collisionZ,
final double remainingX = collisionX ? 0 : velocity.x() - deltaX;
final double remainingY = collisionY ? 0 : velocity.y() - deltaY;
final double remainingZ = collisionZ ? 0 : velocity.z() - deltaZ;
return new PhysicsResult(finalPos, new Vec(remainingX, remainingY, remainingZ),
collisionY, collisionX, collisionY, collisionZ,
Vec.ZERO, finalResult.collidedShapePosition, finalResult.blockType);
}