// Finds points on a line extending infinitely through the points startLoc and endLoc intersecting
// a circle centered at circleLoc
private List<Location> getCollisionPoints(
Location startLoc, Location endLoc, Location circleLoc, double radiusSquared) {
Vector delta = vectorFromLocations(startLoc, endLoc);
Vector circleLocInTermsOfStart = vectorFromLocations(startLoc, circleLoc);
boolean flipped = false;
if (delta.getX() == 0) {
flipped = true;
flipXZ(delta);
flipXZ(circleLocInTermsOfStart);
}
circleLocInTermsOfStart.add(new Vector(0.5, 0, 0.5));
double slope = delta.getZ() / delta.getX();
double circleX = circleLocInTermsOfStart.getX();
double circleZ = circleLocInTermsOfStart.getZ();
double circleXSquared = circleX * circleX;
double circleZSquared = circleZ * circleZ;
List<Double> xs =
getSolutions(
slope * slope + 1,
-(2 * circleZ * slope + 2 * circleX),
circleXSquared + circleZSquared - radiusSquared);
List<Location> results = new ArrayList<Location>();
for (double x : xs) {
Vector offset = new Vector(x, 0, x * slope);
if (flipped) flipXZ(offset);
results.add(startLoc.clone().add(offset));
}
return results;
}
@Override
public SpellResult step(CastContext context) {
if (entity == null) {
return SpellResult.FAIL;
}
SpellResult result = super.step(context);
Location target = actionContext.getTargetLocation();
// TODO: locationOffset and velocityOffset should be made relative
if (locationOffset != null) {
target = target.clone().add(locationOffset);
}
if (doVelocity) {
Vector velocity = this.velocity.clone().multiply(distanceTravelledThisTick);
if (velocityOffset != null) {
velocity = velocity.add(velocityOffset);
}
entity.setVelocity(velocity);
}
Location currentLocation = entity.getLocation();
if (doTeleport) {
if (!orient) {
target.setYaw(currentLocation.getYaw());
target.setPitch(currentLocation.getPitch());
}
entity.teleport(target);
}
return result;
}
/**
* Set the location of the item and put it on the right place on the block
*
* @param location The location of the item/shop block
*/
private void setLocation(Location location) {
this.location = location.getBlock().getLocation(); // simply clear everything after the comma.
Vector vec = this.location.toVector();
vec.add(new Vector(0.5, 0.6, 0.5));
this.location = vec.toLocation(this.location.getWorld());
if (getItem() != null) {
getItem().teleport(this.location);
}
}
/**
* Find a suitable location for a player to teleport to in the given world. This method uses
* WorldBorder as the configuration source.
*
* @param world World to teleport to
* @return Location to teleport to
*/
private Location findSuitableLocationWB(World world) {
BorderData borderData = WorldBorder.plugin.GetWorldBorder(world.getName());
if (borderData == null) {
// throw new IllegalStateException(String.format("World %1$s isn't configured in
// WorldBorder.", world.getName()));
return null;
}
for (int i = 0; i < 100; i++) {
Vector position = new Vector(borderData.getX(), 0.0, borderData.getZ());
// Get a uniform-area random position within the world border's geometry
boolean isRound = (borderData.getShape() == null) ? true : borderData.getShape();
if (isRound) {
position.add(
getRandomPointInEllipse(random, borderData.getRadiusX(), borderData.getRadiusZ()));
} else {
position.add(
getRandomPointInRectangle(random, borderData.getRadiusX(), borderData.getRadiusZ()));
}
// Ensure there's a solid block to stand on
Block highestBlock = world.getHighestBlockAt(position.getBlockX(), position.getBlockZ());
if (highestBlock == null) continue;
highestBlock = highestBlock.getRelative(0, -1, 0); // Because the javadocs are wrong.
if (highestBlock == null) continue;
if (highestBlock.getY() < 1 || highestBlock.getY() >= world.getMaxHeight() - 2) continue;
if (highestBlock.isLiquid()) continue;
position.setX((double) position.getBlockX() + 0.5);
position.setY(highestBlock.getY() + 2);
position.setZ((double) position.getBlockZ() + 0.5);
return position.toLocation(world, getRandomYaw(), 0.0f);
}
return null;
}
private Collection<GlowPlayer> damageEntities() {
float power = this.power;
this.power *= 2f;
Collection<GlowPlayer> affectedPlayers = new ArrayList<>();
Collection<GlowLivingEntity> entities = getNearbyEntities();
for (GlowLivingEntity entity : entities) {
double disDivPower = distanceTo(entity) / (double) this.power;
if (disDivPower > 1.0D) continue;
Vector vecDistance = distanceToHead(entity);
if (vecDistance.length() == 0.0) continue;
vecDistance.normalize();
double basicDamage = calculateDamage(entity, disDivPower);
int explosionDamage =
(int) ((basicDamage * basicDamage + basicDamage) * 4 * (double) power + 1.0D);
if (!(entity instanceof GlowHumanEntity)) {
EntityDamageEvent.DamageCause damageCause;
if (source == null || source.getType() == EntityType.PRIMED_TNT) {
damageCause = EntityDamageEvent.DamageCause.BLOCK_EXPLOSION;
} else {
damageCause = EntityDamageEvent.DamageCause.ENTITY_EXPLOSION;
}
entity.damage(explosionDamage, source, damageCause);
}
double enchantedDamage = calculateEnchantedDamage(basicDamage, entity);
vecDistance.multiply(enchantedDamage);
Vector currentVelocity = entity.getVelocity();
currentVelocity.add(vecDistance);
entity.setVelocity(currentVelocity);
if (entity instanceof GlowPlayer) {
affectedPlayers.add((GlowPlayer) entity);
}
}
this.power = power;
return affectedPlayers;
}
public boolean advance() {
Vector dir = loc.getDirection();
dir.add(new Vector(0.0f, -0.008, 0.0f)); // Apply 'gravity'
loc.setDirection(dir);
loc.add(dir.multiply(speed));
loc.getWorld().createExplosion(loc, 0.0f, false);
if (ItemManager.getId(loc.getBlock()) != CivData.AIR) {
return true;
}
if (loc.distance(startLoc) > maxRange) {
return true;
}
return false;
}
/**
* Get next block
*
* @return next block position
*/
public boolean getNextBlock() {
prevPos = targetPos;
do {
curDistance += checkDistance;
targetPosDouble.add(offset);
targetPos = targetPosDouble.toBlockVector();
} while (curDistance <= maxDistance
&& targetPos.getBlockX() == prevPos.getBlockX()
&& targetPos.getBlockY() == prevPos.getBlockY()
&& targetPos.getBlockZ() == prevPos.getBlockZ());
if (curDistance > maxDistance) {
return false;
}
return true;
}
protected void applyForce() {
if (!isActive()) return;
// Calculate speeds based on previous delta, to try to adjust for server lag
float timeDeltaSeconds = (System.currentTimeMillis() - lastTick) / 1000.0f;
Vector force = new Vector(0, gravity * timeDeltaSeconds, 0);
float elevateMagnitude = (float) elevateRate * timeDeltaSeconds;
float speedMinMagnitude = (float) minSpeed * timeDeltaSeconds;
float speedMaxMagnitude = (float) maxSpeed * timeDeltaSeconds;
Location playerLocation = player.getLocation();
float pitch = playerLocation.getPitch();
float yaw = playerLocation.getYaw();
Vector scaledForce = force.clone();
// scaled based on distance from target height
/// this is the main levitate action
int playerHeight = playerLocation.getBlockY();
int heightDelta = targetHeight - playerHeight;
if (heightDelta > 0) {
int heightBoost = heightDelta > 16 ? 16 : heightDelta;
scaledForce.multiply(heightBoost);
} else if (heightDelta < 0) {
scaledForce.setY(0);
}
// Trying out a suggestion, in a hacky way- adjust pitch so that "level" is really looking
// down a bit
pitch += 15;
// Adjust target height based on aim
Vector aim =
new Vector(
(0 - Math.sin(Math.toRadians(yaw))),
(0 - Math.sin(Math.toRadians(pitch))),
Math.cos(Math.toRadians(yaw)));
aim.normalize();
// only ascend if aiming mostly up, and if near the target
if (heightDelta < 5 && pitch < -45) {
hoverHeight += (elevateMagnitude * aim.getY());
// We'll let the player go up higher than max height.
if (hoverHeight > 255) hoverHeight = 255;
if (hoverHeight < defaultHoverHeight) hoverHeight = defaultHoverHeight;
updateTargetHeight();
}
// Periodically poll for ground level changes
if (checkCounter++ > checkFrequency) {
checkForGround();
}
// Steer- faster at higher altitudes, and scaled based on angle away from center (look up or
// down to stop)
float multiplier = speedMinMagnitude;
if (!player.isSneaking()) {
int heightFactor =
hoverHeight > maxSpeedAtElevation ? maxSpeedAtElevation : (int) hoverHeight;
multiplier *= (float) speedMaxMagnitude * heightFactor / maxSpeedAtElevation;
}
float verticalMultipler = 1.0f - (float) Math.abs(aim.getY());
aim.multiply(multiplier * verticalMultipler);
aim.setY(0);
scaledForce.add(aim);
// Logger.getLogger("Minecraft").info("Applying force: (" + scaledForce.getX() + ", " +
// scaledForce.getY() + ", "+ scaledForce.getZ() + ")");
player.setVelocity(scaledForce);
this.lastTick = System.currentTimeMillis();
}
public static void moveUp(Entity entity, double speed) {
Vector velocity = new Vector(0.0, speed, 0.0); // .normalize().multiply(-speed);
entity.setVelocity(velocity.add(randomDir()));
}
@Override
public SpellResult perform(CastContext context) {
Entity sourceEntity = context.getEntity();
Location sourceLocation = context.getEyeLocation().clone();
Entity targetEntity = context.getTargetEntity();
Location targetLocation = context.getTargetLocation();
if (targetLocation != null) {
targetLocation = targetLocation.clone();
}
Vector direction = context.getDirection().normalize();
if (sourceLocation == null) {
return SpellResult.LOCATION_REQUIRED;
}
if (targetSelf) {
targetEntity = sourceEntity;
targetLocation = sourceLocation;
} else if (targetEntityLocation && targetEntity != null) {
targetLocation = targetEntity.getLocation();
}
if (attachBlock) {
Block previousBlock = context.getPreviousBlock();
if (previousBlock != null) {
Location current = targetLocation;
targetLocation = previousBlock.getLocation();
context.getBrush().setTarget(current, targetLocation);
}
}
if (sourceOffset != null) {
sourceLocation = sourceLocation.add(sourceOffset);
}
if (targetOffset != null && targetLocation != null) {
targetLocation = targetLocation.add(targetOffset);
}
if (randomSourceOffset != null) {
sourceLocation = RandomUtils.randomizeLocation(sourceLocation, randomSourceOffset);
}
if (randomTargetOffset != null && targetLocation != null) {
targetLocation = RandomUtils.randomizeLocation(targetLocation, randomTargetOffset);
}
if (targetDirection != null && targetLocation != null) {
targetLocation.setDirection(targetDirection);
}
if (sourceDirection != null) {
sourceLocation.setDirection(sourceDirection);
direction = sourceDirection.clone();
}
if (targetDirectionOffset != null && targetLocation != null) {
targetLocation.setDirection(targetLocation.getDirection().add(targetDirectionOffset));
}
if (sourceDirectionOffset != null) {
sourceLocation.setDirection(direction.add(sourceDirectionOffset));
}
if (sourceDirectionSpeed != null) {
sourceLocation = sourceLocation.add(direction.clone().multiply(sourceDirectionSpeed));
}
if (targetDirectionSpeed != null && targetLocation != null) {
targetLocation = targetLocation.add(direction.clone().multiply(targetDirectionSpeed));
}
if (sourceAtTarget && targetLocation != null) {
sourceLocation.setX(targetLocation.getX());
sourceLocation.setY(targetLocation.getY());
sourceLocation.setZ(targetLocation.getZ());
sourceLocation.setWorld(targetLocation.getWorld());
}
if (persistTarget) {
context.setTargetLocation(targetLocation);
}
CastContext newContext =
createContext(context, sourceEntity, sourceLocation, targetEntity, targetLocation);
return super.perform(newContext);
}
@Override
public PostCastAction castSpell(Player player, SpellCastState state, float power, String[] args) {
if (state == SpellCastState.NORMAL) {
if (projectileClass != null) {
Projectile projectile = player.launchProjectile(projectileClass);
playSpellEffects(EffectPosition.PROJECTILE, projectile);
playTrackingLinePatterns(
EffectPosition.DYNAMIC_CASTER_PROJECTILE_LINE,
player.getLocation(),
projectile.getLocation(),
player,
projectile);
projectile.setBounce(false);
MagicSpells.getVolatileCodeHandler().setGravity(projectile, projectileHasGravity);
if (velocity > 0) {
projectile.setVelocity(player.getLocation().getDirection().multiply(velocity));
}
if (horizSpread > 0 || vertSpread > 0) {
Vector v = projectile.getVelocity();
v.add(
new Vector(
(random.nextDouble() - .5) * horizSpread,
(random.nextDouble() - .5) * vertSpread,
(random.nextDouble() - .5) * horizSpread));
projectile.setVelocity(v);
}
if (applySpellPowerToVelocity) {
projectile.setVelocity(projectile.getVelocity().multiply(power));
}
projectile.setMetadata(
METADATA_KEY,
new FixedMetadataValue(MagicSpells.plugin, "ProjectileSpell_" + internalName));
projectiles.put(
projectile,
new ProjectileInfo(
player,
power,
(effectInterval > 0 ? new RegularProjectileMonitor(projectile) : null)));
playSpellEffects(EffectPosition.CASTER, projectile);
} else if (projectileItem != null) {
Item item = player.getWorld().dropItem(player.getEyeLocation(), projectileItem.clone());
MagicSpells.getVolatileCodeHandler().setGravity(item, projectileHasGravity);
Vector v = player.getLocation().getDirection().multiply(velocity > 0 ? velocity : 1);
if (horizSpread > 0 || vertSpread > 0) {
v.add(
new Vector(
(random.nextDouble() - .5) * horizSpread,
(random.nextDouble() - .5) * vertSpread,
(random.nextDouble() - .5) * horizSpread));
}
if (applySpellPowerToVelocity) {
v.multiply(power);
}
item.setVelocity(v);
item.setPickupDelay(10);
itemProjectiles.put(
item, new ProjectileInfo(player, power, new ItemProjectileMonitor(item)));
playSpellEffects(EffectPosition.CASTER, item);
}
}
return PostCastAction.HANDLE_NORMALLY;
}
