685 lines
20 KiB
TypeScript
685 lines
20 KiB
TypeScript
import { FastVertexArray } from './fast-vertex-array'
|
|
import TxView from './tx-view'
|
|
import { TransactionStripped } from 'src/app/interfaces/websocket.interface';
|
|
import { Position, Square } from './sprite-types'
|
|
|
|
export default class BlockScene {
|
|
scene: { count: number, offset: { x: number, y: number}};
|
|
vertexArray: FastVertexArray;
|
|
txs: { [key: string]: TxView };
|
|
width: number;
|
|
height: number;
|
|
gridWidth: number;
|
|
gridHeight: number;
|
|
gridSize: number;
|
|
vbytesPerUnit: number;
|
|
unitPadding: number;
|
|
unitWidth: number;
|
|
initialised: boolean;
|
|
layout: BlockLayout;
|
|
dirty: boolean;
|
|
|
|
constructor ({ width, height, resolution, blockLimit, vertexArray }: { width: number, height: number, resolution: number, blockLimit: number, vertexArray: FastVertexArray }) {
|
|
this.init({ width, height, resolution, blockLimit, vertexArray })
|
|
}
|
|
|
|
destroy (): void {
|
|
Object.values(this.txs).forEach(tx => tx.destroy())
|
|
}
|
|
|
|
resize({ width = this.width, height = this.height }: { width?: number, height?: number}): void {
|
|
this.width = width;
|
|
this.height = height;
|
|
this.gridSize = this.width / this.gridWidth;
|
|
this.unitPadding = width / 500;
|
|
this.unitWidth = this.gridSize - (this.unitPadding * 2);
|
|
|
|
this.dirty = true;
|
|
if (this.initialised && this.scene) {
|
|
this.updateAll(performance.now());
|
|
}
|
|
}
|
|
|
|
// Animate new block entering scene
|
|
enter (txs: TransactionStripped[], direction) {
|
|
this.replace(txs, direction)
|
|
}
|
|
|
|
// Animate block leaving scene
|
|
exit (direction: string): void {
|
|
const startTime = performance.now()
|
|
const removed = this.removeBatch(Object.keys(this.txs), startTime, direction)
|
|
|
|
// clean up sprites
|
|
setTimeout(() => {
|
|
removed.forEach(tx => {
|
|
tx.destroy()
|
|
})
|
|
}, 2000)
|
|
}
|
|
|
|
// Reset layout and replace with new set of transactions
|
|
replace (txs: TransactionStripped[], direction: string = 'left'): void {
|
|
const startTime = performance.now()
|
|
const nextIds = {}
|
|
const remove = []
|
|
txs.forEach(tx => {
|
|
nextIds[tx.txid] = true
|
|
})
|
|
Object.keys(this.txs).forEach(txid => {
|
|
if (!nextIds[txid]) remove.push(txid)
|
|
})
|
|
txs.forEach(tx => {
|
|
if (!this.txs[tx.txid]) this.txs[tx.txid] = new TxView(tx, this.vertexArray)
|
|
})
|
|
|
|
const removed = this.removeBatch(remove, startTime, direction)
|
|
|
|
// clean up sprites
|
|
setTimeout(() => {
|
|
removed.forEach(tx => {
|
|
tx.destroy()
|
|
})
|
|
}, 1000)
|
|
|
|
this.layout = new BlockLayout({ width: this.gridWidth, height: this.gridHeight })
|
|
|
|
Object.values(this.txs).sort((a,b) => { return b.feerate - a.feerate }).forEach(tx => {
|
|
this.place(tx)
|
|
})
|
|
|
|
this.updateAll(startTime, direction)
|
|
}
|
|
|
|
update (add: TransactionStripped[], remove: string[], direction: string = 'left', resetLayout: boolean = false): void {
|
|
const startTime = performance.now()
|
|
const removed = this.removeBatch(remove, startTime, direction)
|
|
|
|
// clean up sprites
|
|
setTimeout(() => {
|
|
removed.forEach(tx => {
|
|
tx.destroy()
|
|
})
|
|
}, 1000)
|
|
|
|
if (resetLayout) {
|
|
add.forEach(tx => {
|
|
if (!this.txs[tx.txid]) this.txs[tx.txid] = new TxView(tx, this.vertexArray)
|
|
})
|
|
this.layout = new BlockLayout({ width: this.gridWidth, height: this.gridHeight })
|
|
Object.values(this.txs).sort((a,b) => { return b.feerate - a.feerate }).forEach(tx => {
|
|
this.place(tx)
|
|
})
|
|
} else {
|
|
// try to insert new txs directly
|
|
const remaining = []
|
|
add.map(tx => new TxView(tx, this.vertexArray)).sort((a,b) => { return b.feerate - a.feerate }).forEach(tx => {
|
|
if (!this.tryInsertByFee(tx)) {
|
|
remaining.push(tx)
|
|
}
|
|
})
|
|
this.placeBatch(remaining)
|
|
this.layout.applyGravity()
|
|
}
|
|
|
|
this.updateAll(startTime, direction)
|
|
}
|
|
|
|
//return the tx at this screen position, if any
|
|
getTxAt (position: Position): TxView | void {
|
|
if (this.layout) {
|
|
const gridPosition = this.screenToGrid(position)
|
|
return this.layout.getTx(gridPosition)
|
|
} else return null
|
|
}
|
|
|
|
private init ({ width, height, resolution, blockLimit, vertexArray }: { width: number, height: number, resolution: number, blockLimit: number, vertexArray: FastVertexArray }): void {
|
|
this.vertexArray = vertexArray
|
|
|
|
this.scene = {
|
|
count: 0,
|
|
offset: {
|
|
x: 0,
|
|
y: 0
|
|
}
|
|
}
|
|
|
|
// Set the scale of the visualization (with a 5% margin)
|
|
this.vbytesPerUnit = blockLimit / Math.pow(resolution / 1.05, 2)
|
|
this.gridWidth = resolution
|
|
this.gridHeight = resolution
|
|
this.resize({ width, height })
|
|
this.layout = new BlockLayout({ width: this.gridWidth, height: this.gridHeight })
|
|
|
|
this.txs = {}
|
|
|
|
this.initialised = true
|
|
this.dirty = true
|
|
}
|
|
|
|
private insert (tx: TxView, startTime: number, direction: string = 'left'): void {
|
|
this.txs[tx.txid] = tx
|
|
this.place(tx)
|
|
this.updateTx(tx, startTime, direction)
|
|
}
|
|
|
|
private updateTx (tx: TxView, startTime: number, direction: string = 'left'): void {
|
|
if (tx.dirty || this.dirty) {
|
|
this.saveGridToScreenPosition(tx)
|
|
this.setTxOnScreen(tx, startTime, direction)
|
|
}
|
|
}
|
|
|
|
private setTxOnScreen (tx: TxView, startTime: number, direction: string = 'left'): void {
|
|
if (!tx.initialised) {
|
|
const txColor = tx.getColor()
|
|
tx.update({
|
|
display: {
|
|
position: {
|
|
x: tx.screenPosition.x + (direction == 'right' ? -this.width : this.width) * 1.4,
|
|
y: tx.screenPosition.y,
|
|
s: tx.screenPosition.s
|
|
},
|
|
color: txColor,
|
|
},
|
|
start: startTime,
|
|
delay: 0,
|
|
})
|
|
tx.update({
|
|
display: {
|
|
position: tx.screenPosition,
|
|
color: txColor
|
|
},
|
|
duration: 1000,
|
|
start: startTime,
|
|
delay: 50,
|
|
})
|
|
} else {
|
|
tx.update({
|
|
display: {
|
|
position: tx.screenPosition
|
|
},
|
|
duration: 1000,
|
|
minDuration: 500,
|
|
start: startTime,
|
|
delay: 50,
|
|
adjust: true
|
|
})
|
|
}
|
|
}
|
|
|
|
private updateAll (startTime: number, direction: string = 'left'): void {
|
|
this.scene.count = 0
|
|
const ids = this.getTxList()
|
|
startTime = startTime || performance.now()
|
|
for (let i = 0; i < ids.length; i++) {
|
|
this.updateTx(this.txs[ids[i]], startTime, direction)
|
|
}
|
|
this.dirty = false
|
|
}
|
|
|
|
private remove (id: string, startTime: number, direction: string = 'left'): TxView | void {
|
|
const tx = this.txs[id]
|
|
if (tx) {
|
|
this.layout.remove(tx)
|
|
tx.update({
|
|
display: {
|
|
position: {
|
|
x: tx.screenPosition.x + (direction == 'right' ? this.width : -this.width) * 1.4,
|
|
y: this.txs[id].screenPosition.y,
|
|
}
|
|
},
|
|
duration: 1000,
|
|
start: startTime,
|
|
delay: 50
|
|
})
|
|
}
|
|
delete this.txs[id]
|
|
return tx
|
|
}
|
|
|
|
private getTxList (): string[] {
|
|
return Object.keys(this.txs)
|
|
}
|
|
|
|
private saveGridToScreenPosition (tx: TxView): void {
|
|
tx.screenPosition = this.gridToScreen(tx.gridPosition)
|
|
}
|
|
|
|
// convert grid coordinates to screen coordinates
|
|
private gridToScreen (position: Square | void): Square {
|
|
if (position) {
|
|
const slotSize = (position.s * this.gridSize)
|
|
const squareSize = slotSize - (this.unitPadding * 2)
|
|
|
|
// The grid is laid out notionally left-to-right, bottom-to-top
|
|
// So we rotate 90deg counterclockwise then flip the y axis
|
|
//
|
|
// grid screen
|
|
// ________ ________ ________
|
|
// | | | b| | a|
|
|
// | | rotate | | flip | c |
|
|
// | c | --> | c | --> | |
|
|
// |a______b| |_______a| |_______b|
|
|
return {
|
|
x: this.width + (this.unitPadding * 2) - (this.gridSize * position.y) - slotSize,
|
|
y: this.height - ((this.gridSize * position.x) + (slotSize - this.unitPadding)),
|
|
s: squareSize
|
|
}
|
|
} else {
|
|
return { x: 0, y: 0, s: 0 }
|
|
}
|
|
}
|
|
|
|
screenToGrid (position: Position): Position {
|
|
const grid = {
|
|
x: Math.floor((position.y - this.unitPadding) / this.gridSize),
|
|
y: Math.floor((this.width + (this.unitPadding * 2) - position.x) / this.gridSize)
|
|
}
|
|
return grid
|
|
}
|
|
|
|
// calculates and returns the size of the tx in multiples of the grid size
|
|
private txSize (tx: TxView): number {
|
|
let scale = Math.max(1,Math.round(Math.sqrt(tx.vsize / this.vbytesPerUnit)))
|
|
return Math.min(this.gridWidth, Math.max(1, scale)) // bound between 1 and the max displayable size (just in case!)
|
|
}
|
|
|
|
private place (tx: TxView): void {
|
|
const size = this.txSize(tx)
|
|
this.layout.insert(tx, size)
|
|
}
|
|
|
|
private tryInsertByFee (tx: TxView): boolean {
|
|
const size = this.txSize(tx)
|
|
const position = this.layout.tryInsertByFee(tx, size)
|
|
if (position) {
|
|
this.txs[tx.txid] = tx
|
|
return true
|
|
} else {
|
|
return false
|
|
}
|
|
}
|
|
|
|
// Add a list of transactions to the layout,
|
|
// keeping everything approximately sorted by feerate.
|
|
private placeBatch (txs: TxView[]): void {
|
|
if (txs.length) {
|
|
// grab the new tx with the highest fee rate
|
|
txs = txs.sort((a,b) => { return b.feerate - a.feerate })
|
|
let i = 0
|
|
let maxSize = txs.reduce((max, tx) => {
|
|
return Math.max(this.txSize(tx), max)
|
|
}, 1) * 2
|
|
|
|
// find a reasonable place for it in the layout
|
|
const root = this.layout.getReplacementRoot(txs[0].feerate, maxSize)
|
|
|
|
// extract a sub tree of transactions from the layout, rooted at that point
|
|
const popped = this.layout.popTree(root.x, root.y, maxSize)
|
|
// combine those with the new transactions and sort
|
|
txs = txs.concat(popped)
|
|
txs = txs.sort((a,b) => { return b.feerate - a.feerate })
|
|
|
|
// insert everything back into the layout
|
|
txs.forEach(tx => {
|
|
this.txs[tx.txid] = tx
|
|
this.place(tx)
|
|
})
|
|
}
|
|
}
|
|
|
|
private removeBatch (ids: string[], startTime: number, direction: string = 'left'): TxView[] {
|
|
if (!startTime) startTime = performance.now()
|
|
return ids.map(id => {
|
|
return this.remove(id, startTime, direction)
|
|
}).filter(tx => tx != null) as TxView[]
|
|
}
|
|
}
|
|
|
|
|
|
class Slot {
|
|
l: number
|
|
r: number
|
|
w: number
|
|
|
|
constructor (l: number, r: number) {
|
|
this.l = l
|
|
this.r = r
|
|
this.w = r - l
|
|
}
|
|
|
|
intersects (slot: Slot): boolean {
|
|
return !((slot.r <= this.l) || (slot.l >= this.r))
|
|
}
|
|
|
|
subtract (slot: Slot): Slot[] | void {
|
|
if (this.intersects(slot)) {
|
|
// from middle
|
|
if (slot.l > this.l && slot.r < this.r) {
|
|
return [
|
|
new Slot(this.l, slot.l),
|
|
new Slot(slot.r, this.r)
|
|
]
|
|
} // totally covered
|
|
else if (slot.l <= this.l && slot.r >= this.r) {
|
|
return []
|
|
} // from left side
|
|
else if (slot.l <= this.l) {
|
|
if (slot.r == this.r) return []
|
|
else return [new Slot(slot.r, this.r)]
|
|
} // from right side
|
|
else if (slot.r >= this.r) {
|
|
if (slot.l == this.l) return []
|
|
else return [new Slot(this.l, slot.l)]
|
|
}
|
|
} else return [this]
|
|
}
|
|
}
|
|
|
|
class TxSlot extends Slot {
|
|
tx: TxView
|
|
|
|
constructor (l: number, r: number, tx: TxView) {
|
|
super(l, r)
|
|
this.tx = tx
|
|
}
|
|
}
|
|
|
|
class Row {
|
|
y: number
|
|
w: number
|
|
filled: TxSlot[]
|
|
slots: Slot[]
|
|
|
|
|
|
constructor (y: number, width: number) {
|
|
this.y = y
|
|
this.w = width
|
|
this.filled = []
|
|
this.slots = [new Slot(0, this.w)]
|
|
}
|
|
|
|
// insert a transaction w/ given width into row starting at position x
|
|
insert (x: number, w: number, tx: TxView): void {
|
|
const newSlot = new TxSlot(x, x + w, tx)
|
|
// insert into filled list
|
|
let index = this.filled.findIndex((slot) => { return slot.l >= newSlot.r })
|
|
if (index < 0) index = this.filled.length
|
|
this.filled.splice(index || 0, 0, newSlot)
|
|
// subtract from overlapping slots
|
|
for (let i = 0; i < this.slots.length; i++) {
|
|
if (newSlot.intersects(this.slots[i])) {
|
|
const diff = this.slots[i].subtract(newSlot)
|
|
if (diff) {
|
|
this.slots.splice(i, 1, ...diff)
|
|
i += diff.length - 1
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
remove (x: number, w: number): void {
|
|
const txIndex = this.filled.findIndex((slot) => { return slot.l == x })
|
|
this.filled.splice(txIndex, 1)
|
|
|
|
const newSlot = new Slot(x, x + w)
|
|
let slotIndex = this.slots.findIndex((slot) => { return slot.l >= newSlot.r })
|
|
if (slotIndex < 0) slotIndex = this.slots.length
|
|
this.slots.splice(slotIndex || 0, 0, newSlot)
|
|
this.normalize()
|
|
}
|
|
|
|
// merge any contiguous empty slots
|
|
private normalize (): void {
|
|
for (let i = 0; i < this.slots.length - 1; i++) {
|
|
if (this.slots[i].r == this.slots[i+1].l) {
|
|
this.slots[i].r = this.slots[i+1].r
|
|
this.slots[i].w += this.slots[i+1].w
|
|
this.slots.splice(i+1, 1)
|
|
i--
|
|
}
|
|
}
|
|
}
|
|
|
|
txAt (x: number): TxView | void {
|
|
let i = 0
|
|
while (i < this.filled.length && this.filled[i].l <= x) {
|
|
if (this.filled[i].l <= x && this.filled[i].r > x) return this.filled[i].tx
|
|
i++
|
|
}
|
|
}
|
|
|
|
getSlotsBetween (left: number, right: number): TxSlot[] {
|
|
const range = new Slot(left, right)
|
|
return this.filled.filter(slot => {
|
|
return slot.intersects(range)
|
|
})
|
|
}
|
|
|
|
slotAt (x: number): Slot | void {
|
|
let i = 0
|
|
while (i < this.slots.length && this.slots[i].l <= x) {
|
|
if (this.slots[i].l <= x && this.slots[i].r > x) return this.slots[i]
|
|
i++
|
|
}
|
|
}
|
|
|
|
getAvgFeerate (): number {
|
|
let count = 0
|
|
let total = 0
|
|
this.filled.forEach(slot => {
|
|
if (slot.tx) {
|
|
count += slot.w
|
|
total += (slot.tx.feerate * slot.w)
|
|
}
|
|
})
|
|
return total / count
|
|
}
|
|
}
|
|
|
|
class BlockLayout {
|
|
width: number;
|
|
height: number;
|
|
rows: Row[];
|
|
txPositions: { [key: string]: Square }
|
|
txs: { [key: string]: TxView }
|
|
|
|
constructor ({ width, height } : { width: number, height: number }) {
|
|
this.width = width
|
|
this.height = height
|
|
this.rows = [new Row(0, this.width)]
|
|
this.txPositions = {}
|
|
this.txs = {}
|
|
}
|
|
|
|
getRow (position: Square): Row {
|
|
return this.rows[position.y]
|
|
}
|
|
|
|
getTx (position: Square): TxView | void {
|
|
if (this.getRow(position)) {
|
|
return this.getRow(position).txAt(position.x)
|
|
}
|
|
}
|
|
|
|
addRow (): void {
|
|
this.rows.push(new Row(this.rows.length, this.width))
|
|
}
|
|
|
|
remove (tx: TxView) {
|
|
const position = this.txPositions[tx.txid]
|
|
if (position) {
|
|
for (let y = position.y; y < position.y + position.s && y < this.rows.length; y++) {
|
|
this.rows[y].remove(position.x, position.s)
|
|
}
|
|
}
|
|
delete this.txPositions[tx.txid]
|
|
delete this.txs[tx.txid]
|
|
}
|
|
|
|
insert (tx: TxView, width: number): Square {
|
|
const fit = this.fit(tx, width)
|
|
|
|
// insert the tx into rows at that position
|
|
for (let y = fit.y; y < fit.y + width; y++) {
|
|
if (y >= this.rows.length) this.addRow()
|
|
this.rows[y].insert(fit.x, width, tx)
|
|
}
|
|
const position = { x: fit.x, y: fit.y, s: width }
|
|
this.txPositions[tx.txid] = position
|
|
this.txs[tx.txid] = tx
|
|
tx.applyGridPosition(position)
|
|
return position
|
|
}
|
|
|
|
// Find the first slot large enough to hold a transaction of this size
|
|
fit (tx: TxView, width: number): Square {
|
|
let fit
|
|
for (let y = 0; y < this.rows.length && !fit; y++) {
|
|
fit = this.findFit(0, this.width, y, y, width)
|
|
}
|
|
// fall back to placing tx in a new row at the top of the layout
|
|
if (!fit) {
|
|
fit = { x: 0, y: this.rows.length }
|
|
}
|
|
return fit
|
|
}
|
|
|
|
// recursively check rows to see if there's space for a tx (depth-first)
|
|
// left/right: initial column boundaries to check
|
|
// row: current row to check
|
|
// start: starting row
|
|
// size: size of space needed
|
|
findFit (left: number, right: number, row: number, start: number, size: number) : Square {
|
|
if ((row - start) >= size || row >= this.rows.length) {
|
|
return { x: left, y: start }
|
|
}
|
|
for (let i = 0; i < this.rows[row].slots.length; i++) {
|
|
const slot = this.rows[row].slots[i]
|
|
const l = Math.max(left, slot.l)
|
|
const r = Math.min(right, slot.r)
|
|
if (r - l >= size) {
|
|
const fit = this.findFit(l, r, row + 1, start, size)
|
|
if (fit) return fit
|
|
}
|
|
}
|
|
}
|
|
|
|
// insert only if the tx fits into a fee-appropriate position
|
|
tryInsertByFee (tx: TxView, size: number): Square | void {
|
|
const fit = this.fit(tx, size)
|
|
|
|
if (this.checkRowFees(fit.y, tx.feerate)) {
|
|
// insert the tx into rows at that position
|
|
for (let y = fit.y; y < fit.y + size; y++) {
|
|
if (y >= this.rows.length) this.addRow()
|
|
this.rows[y].insert(fit.x, size, tx)
|
|
}
|
|
const position = { x: fit.x, y: fit.y, s: size }
|
|
this.txPositions[tx.txid] = position
|
|
this.txs[tx.txid] = tx
|
|
tx.applyGridPosition(position)
|
|
return position
|
|
}
|
|
}
|
|
|
|
// Return the first slot with a lower feerate
|
|
getReplacementRoot (feerate: number, width: number): Square {
|
|
let slot
|
|
for (let row = 0; row <= this.rows.length; row++) {
|
|
if (this.rows[row].slots.length > 0) {
|
|
return { x: this.rows[row].slots[0].l, y: row }
|
|
} else {
|
|
slot = this.rows[row].filled.find(x => {
|
|
return x.tx.feerate < feerate
|
|
})
|
|
if (slot) {
|
|
return { x: Math.min(slot.l, this.width - width), y: row }
|
|
}
|
|
}
|
|
}
|
|
return { x: 0, y: this.rows.length }
|
|
}
|
|
|
|
// remove and return all transactions in a subtree of the layout
|
|
popTree (x: number, y: number, width: number) {
|
|
const selected: { [key: string]: TxView } = {}
|
|
let left = x
|
|
let right = x + width
|
|
let prevWidth = right - left
|
|
let prevFee = Infinity
|
|
// scan rows upwards within a channel bounded by 'left' and 'right'
|
|
for (let row = y; row < this.rows.length; row++) {
|
|
let rowMax = 0
|
|
let slots = this.rows[row].getSlotsBetween(left, right)
|
|
// check each slot in this row overlapping the search channel
|
|
slots.forEach(slot => {
|
|
// select the associated transaction
|
|
selected[slot.tx.txid] = slot.tx
|
|
rowMax = Math.max(rowMax, slot.tx.feerate)
|
|
// widen the search channel to accommodate this slot if necessary
|
|
if (slot.w > prevWidth) {
|
|
left = slot.l
|
|
right = slot.r
|
|
// if this slot's tx has a higher feerate than the max in the previous row
|
|
// (i.e. it's out of position)
|
|
// select all txs overlapping the slot's full width in some rows *below*
|
|
// to free up space for this tx to sink down to its proper position
|
|
if (slot.tx.feerate > prevFee) {
|
|
let count = 0
|
|
// keep scanning back down until we find a full row of higher-feerate txs
|
|
for (let echo = row - 1; echo >= 0 && count < slot.w; echo--) {
|
|
let echoSlots = this.rows[echo].getSlotsBetween(slot.l, slot.r)
|
|
count = 0
|
|
echoSlots.forEach(echoSlot => {
|
|
selected[echoSlot.tx.txid] = echoSlot.tx
|
|
if (echoSlot.tx.feerate >= slot.tx.feerate) {
|
|
count += echoSlot.w
|
|
}
|
|
})
|
|
}
|
|
}
|
|
}
|
|
})
|
|
prevWidth = right - left
|
|
prevFee = rowMax
|
|
}
|
|
|
|
const txList = Object.values(selected)
|
|
|
|
txList.forEach(tx => {
|
|
this.remove(tx)
|
|
})
|
|
return txList
|
|
}
|
|
|
|
// Check if this row has high enough avg fees
|
|
// for a tx with this feerate to make sense here
|
|
checkRowFees (row: number, targetFee: number): boolean {
|
|
// first row is always fine
|
|
if (row == 0 || !this.rows[row]) return true
|
|
return (this.rows[row].getAvgFeerate() > (targetFee * 0.9))
|
|
}
|
|
|
|
// drop any free-floating transactions down into empty spaces
|
|
applyGravity (): void {
|
|
Object.entries(this.txPositions).sort(([keyA, posA], [keyB, posB]) => {
|
|
return posA.y - posB.y || posA.x - posB.x
|
|
}).forEach(([txid, position]) => {
|
|
// see how far this transaction can fall
|
|
let dropTo = position.y
|
|
while (dropTo > 0 && !this.rows[dropTo - 1].getSlotsBetween(position.x, position.x + position.s).length) {
|
|
dropTo--;
|
|
}
|
|
// if it can fall at all
|
|
if (dropTo < position.y) {
|
|
// remove and reinsert in the row we found
|
|
const tx = this.txs[txid]
|
|
this.remove(tx)
|
|
this.insert(tx, position.s)
|
|
}
|
|
})
|
|
}
|
|
}
|