Fixed character offset in OfflineMap2.

This commit is contained in:
genxium
2022-12-25 14:18:48 +08:00
parent 72782735d3
commit 013c1ea312
15 changed files with 514 additions and 212930 deletions

549
jsexport/battle/battle.go Normal file
View File

@@ -0,0 +1,549 @@
package battle
import (
"github.com/kvartborg/vector"
"github.com/solarlune/resolv"
"math"
)
const (
MAX_FLOAT64 = 1.7e+308
COLLISION_PLAYER_INDEX_PREFIX = (1 << 17)
COLLISION_BARRIER_INDEX_PREFIX = (1 << 16)
COLLISION_BULLET_INDEX_PREFIX = (1 << 15)
)
// These directions are chosen such that when speed is changed to "(speedX+delta, speedY+delta)" for any of them, the direction is unchanged.
var DIRECTION_DECODER = [][]int32{
{0, 0},
{0, +2},
{0, -2},
{+2, 0},
{-2, 0},
{+1, +1},
{-1, -1},
{+1, -1},
{-1, +1},
}
const (
ATK_CHARACTER_STATE_IDLE1 = int32(0)
ATK_CHARACTER_STATE_WALKING = int32(1)
ATK_CHARACTER_STATE_ATK1 = int32(2)
ATK_CHARACTER_STATE_ATKED1 = int32(3)
ATK_CHARACTER_STATE_INAIR_IDLE1 = int32(4)
ATK_CHARACTER_STATE_INAIR_ATK1 = int32(5)
ATK_CHARACTER_STATE_INAIR_ATKED1 = int32(6)
)
func ConvertToInputFrameId(renderFrameId int32, inputDelayFrames int32, inputScaleFrames int32) int32 {
if renderFrameId < inputDelayFrames {
return 0
}
return ((renderFrameId - inputDelayFrames) >> inputScaleFrames)
}
func DecodeInput(encodedInput uint64) *InputFrameDecoded {
encodedDirection := (encodedInput & uint64(15))
btnALevel := int32((encodedInput >> 4) & 1)
btnBLevel := int32((encodedInput >> 5) & 1)
return &InputFrameDecoded{
Dx: DIRECTION_DECODER[encodedDirection][0],
Dy: DIRECTION_DECODER[encodedDirection][1],
BtnALevel: btnALevel,
BtnBLevel: btnBLevel,
}
}
type SatResult struct {
Overlap float64
OverlapX float64
OverlapY float64
AContainedInB bool
BContainedInA bool
Axis vector.Vector
}
func CalcPushbacks(oldDx, oldDy float64, playerShape, barrierShape *resolv.ConvexPolygon) (bool, float64, float64, *SatResult) {
origX, origY := playerShape.Position()
defer func() {
playerShape.SetPosition(origX, origY)
}()
playerShape.SetPosition(origX+oldDx, origY+oldDy)
overlapResult := &SatResult{
Overlap: 0,
OverlapX: 0,
OverlapY: 0,
AContainedInB: true,
BContainedInA: true,
Axis: vector.Vector{0, 0},
}
if overlapped := isPolygonPairOverlapped(playerShape, barrierShape, overlapResult); overlapped {
pushbackX, pushbackY := overlapResult.Overlap*overlapResult.OverlapX, overlapResult.Overlap*overlapResult.OverlapY
return true, pushbackX, pushbackY, overlapResult
} else {
return false, 0, 0, overlapResult
}
}
func isPolygonPairOverlapped(a, b *resolv.ConvexPolygon, result *SatResult) bool {
aCnt, bCnt := len(a.Points), len(b.Points)
// Single point case
if 1 == aCnt && 1 == bCnt {
if nil != result {
result.Overlap = 0
}
return a.Points[0][0] == b.Points[0][0] && a.Points[0][1] == b.Points[0][1]
}
if 1 < aCnt {
for _, axis := range a.SATAxes() {
if isPolygonPairSeparatedByDir(a, b, axis.Unit(), result) {
return false
}
}
}
if 1 < bCnt {
for _, axis := range b.SATAxes() {
if isPolygonPairSeparatedByDir(a, b, axis.Unit(), result) {
return false
}
}
}
return true
}
func isPolygonPairSeparatedByDir(a, b *resolv.ConvexPolygon, e vector.Vector, result *SatResult) bool {
/*
[WARNING] This function is deliberately made private, it shouldn't be used alone (i.e. not along the norms of a polygon), otherwise the pushbacks calculated would be meaningless.
Consider the following example
a: {
anchor: [1337.19 1696.74]
points: [[0 0] [24 0] [24 24] [0 24]]
},
b: {
anchor: [1277.72 1570.56]
points: [[642.57 319.16] [0 319.16] [5.73 0] [643.75 0.90]]
}
e = (-2.98, 1.49).Unit()
*/
var aStart, aEnd, bStart, bEnd float64 = MAX_FLOAT64, -MAX_FLOAT64, MAX_FLOAT64, -MAX_FLOAT64
for _, p := range a.Points {
dot := (p[0]+a.X)*e[0] + (p[1]+a.Y)*e[1]
if aStart > dot {
aStart = dot
}
if aEnd < dot {
aEnd = dot
}
}
for _, p := range b.Points {
dot := (p[0]+b.X)*e[0] + (p[1]+b.Y)*e[1]
if bStart > dot {
bStart = dot
}
if bEnd < dot {
bEnd = dot
}
}
if aStart > bEnd || aEnd < bStart {
// Separated by unit vector "e"
return true
}
if nil != result {
overlap := float64(0)
if aStart < bStart {
result.AContainedInB = false
if aEnd < bEnd {
overlap = aEnd - bStart
result.BContainedInA = false
} else {
option1 := aEnd - bStart
option2 := bEnd - aStart
if option1 < option2 {
overlap = option1
} else {
overlap = -option2
}
}
} else {
result.BContainedInA = false
if aEnd > bEnd {
overlap = aStart - bEnd
result.AContainedInB = false
} else {
option1 := aEnd - bStart
option2 := bEnd - aStart
if option1 < option2 {
overlap = option1
} else {
overlap = -option2
}
}
}
currentOverlap := result.Overlap
absoluteOverlap := overlap
if overlap < 0 {
absoluteOverlap = -overlap
}
if (0 == result.Axis[0] && 0 == result.Axis[1]) || currentOverlap > absoluteOverlap {
var sign float64 = 1
if overlap < 0 {
sign = -1
}
result.Overlap = absoluteOverlap
result.OverlapX = e[0] * sign
result.OverlapY = e[1] * sign
}
result.Axis = e
}
// the specified unit vector "e" doesn't separate "a" and "b", overlap result is generated
return false
}
func WorldToVirtualGridPos(wx, wy, worldToVirtualGridRatio float64) (int32, int32) {
// [WARNING] Introduces loss of precision!
// In JavaScript floating numbers suffer from seemingly non-deterministic arithmetics, and even if certain libs solved this issue by approaches such as fixed-point-number, they might not be used in other libs -- e.g. the "collision libs" we're interested in -- thus couldn't kill all pains.
var virtualGridX int32 = int32(math.Round(wx * worldToVirtualGridRatio))
var virtualGridY int32 = int32(math.Round(wy * worldToVirtualGridRatio))
return virtualGridX, virtualGridY
}
func VirtualGridToWorldPos(vx, vy int32, virtualGridToWorldRatio float64) (float64, float64) {
// No loss of precision
var wx float64 = float64(vx) * virtualGridToWorldRatio
var wy float64 = float64(vy) * virtualGridToWorldRatio
return wx, wy
}
func WorldToPolygonColliderBLPos(wx, wy, halfBoundingW, halfBoundingH, topPadding, bottomPadding, leftPadding, rightPadding, collisionSpaceOffsetX, collisionSpaceOffsetY float64) (float64, float64) {
return wx - halfBoundingW - leftPadding + collisionSpaceOffsetX, wy - halfBoundingH - bottomPadding + collisionSpaceOffsetY
}
func PolygonColliderBLToWorldPos(cx, cy, halfBoundingW, halfBoundingH, topPadding, bottomPadding, leftPadding, rightPadding, collisionSpaceOffsetX, collisionSpaceOffsetY float64) (float64, float64) {
return cx + halfBoundingW + leftPadding - collisionSpaceOffsetX, cy + halfBoundingH + bottomPadding - collisionSpaceOffsetY
}
func PolygonColliderBLToVirtualGridPos(cx, cy, halfBoundingW, halfBoundingH, topPadding, bottomPadding, leftPadding, rightPadding, collisionSpaceOffsetX, collisionSpaceOffsetY float64, worldToVirtualGridRatio float64) (int32, int32) {
wx, wy := PolygonColliderBLToWorldPos(cx, cy, halfBoundingW, halfBoundingH, topPadding, bottomPadding, leftPadding, rightPadding, collisionSpaceOffsetX, collisionSpaceOffsetY)
return WorldToVirtualGridPos(wx, wy, worldToVirtualGridRatio)
}
func VirtualGridToPolygonColliderBLPos(vx, vy int32, halfBoundingW, halfBoundingH, topPadding, bottomPadding, leftPadding, rightPadding, collisionSpaceOffsetX, collisionSpaceOffsetY float64, virtualGridToWorldRatio float64) (float64, float64) {
wx, wy := VirtualGridToWorldPos(vx, vy, virtualGridToWorldRatio)
return WorldToPolygonColliderBLPos(wx, wy, halfBoundingW, halfBoundingH, topPadding, bottomPadding, leftPadding, rightPadding, collisionSpaceOffsetX, collisionSpaceOffsetY)
}
func CalcHardPushbacksNorms(playerCollider *resolv.Object, playerShape *resolv.ConvexPolygon, snapIntoPlatformOverlap float64, pEffPushback *Vec2D) []Vec2D {
ret := make([]Vec2D, 0, 10) // no one would simultaneously have more than 5 hardPushbacks
collision := playerCollider.Check(0, 0)
if nil == collision {
return ret
}
for _, obj := range collision.Objects {
switch obj.Data.(type) {
case *Barrier:
barrierShape := obj.Shape.(*resolv.ConvexPolygon)
overlapped, pushbackX, pushbackY, overlapResult := CalcPushbacks(0, 0, playerShape, barrierShape)
if !overlapped {
continue
}
// ALWAY snap into hardPushbacks!
// [OverlapX, OverlapY] is the unit vector that points into the platform
pushbackX, pushbackY = (overlapResult.Overlap-snapIntoPlatformOverlap)*overlapResult.OverlapX, (overlapResult.Overlap-snapIntoPlatformOverlap)*overlapResult.OverlapY
ret = append(ret, Vec2D{X: overlapResult.OverlapX, Y: overlapResult.OverlapY})
pEffPushback.X += pushbackX
pEffPushback.Y += pushbackY
default:
}
}
return ret
}
func ApplyInputFrameDownsyncDynamicsOnSingleRenderFrame(delayedInputFrame, delayedInputFrameForPrevRenderFrame *InputFrameDownsync, currRenderFrame *RoomDownsyncFrame, collisionSys *resolv.Space, collisionSysMap map[int32]*resolv.Object, gravityX, gravityY, jumpingInitVelY, inputDelayFrames, inputScaleFrames int32, collisionSpaceOffsetX, collisionSpaceOffsetY, snapIntoPlatformOverlap, snapIntoPlatformThreshold, worldToVirtualGridRatio, virtualGridToWorldRatio float64) *RoomDownsyncFrame {
// [WARNING] This function MUST BE called while "InputsBufferLock" is locked!
roomCapacity := len(currRenderFrame.PlayersArr)
nextRenderFramePlayers := make([]*PlayerDownsync, roomCapacity)
// Make a copy first
for i, currPlayerDownsync := range currRenderFrame.PlayersArr {
nextRenderFramePlayers[i] = &PlayerDownsync{
Id: currPlayerDownsync.Id,
VirtualGridX: currPlayerDownsync.VirtualGridX,
VirtualGridY: currPlayerDownsync.VirtualGridY,
DirX: currPlayerDownsync.DirX,
DirY: currPlayerDownsync.DirY,
VelX: currPlayerDownsync.VelX,
VelY: currPlayerDownsync.VelY,
CharacterState: currPlayerDownsync.CharacterState,
InAir: true,
Speed: currPlayerDownsync.Speed,
BattleState: currPlayerDownsync.BattleState,
Score: currPlayerDownsync.Score,
Removed: currPlayerDownsync.Removed,
JoinIndex: currPlayerDownsync.JoinIndex,
FramesToRecover: currPlayerDownsync.FramesToRecover - 1,
Hp: currPlayerDownsync.Hp,
MaxHp: currPlayerDownsync.MaxHp,
}
if nextRenderFramePlayers[i].FramesToRecover < 0 {
nextRenderFramePlayers[i].FramesToRecover = 0
}
}
effPushbacks := make([]Vec2D, roomCapacity)
hardPushbackNorms := make([][]Vec2D, roomCapacity)
// 1. Process player inputs
if nil != delayedInputFrame {
inputList := delayedInputFrame.InputList
for i, currPlayerDownsync := range currRenderFrame.PlayersArr {
joinIndex := currPlayerDownsync.JoinIndex
thatPlayerInNextFrame := nextRenderFramePlayers[i]
if 0 < thatPlayerInNextFrame.FramesToRecover {
continue
}
decodedInput := DecodeInput(inputList[joinIndex-1])
prevBtnBLevel := int32(0)
if nil != delayedInputFrameForPrevRenderFrame {
prevDecodedInput := DecodeInput(delayedInputFrameForPrevRenderFrame.InputList[joinIndex-1])
prevBtnBLevel = prevDecodedInput.BtnBLevel
}
if decodedInput.BtnBLevel > prevBtnBLevel {
characStateAlreadyInAir := false
if ATK_CHARACTER_STATE_INAIR_IDLE1 == thatPlayerInNextFrame.CharacterState || ATK_CHARACTER_STATE_INAIR_ATK1 == thatPlayerInNextFrame.CharacterState || ATK_CHARACTER_STATE_INAIR_ATKED1 == thatPlayerInNextFrame.CharacterState {
characStateAlreadyInAir = true
}
characStateIsInterruptWaivable := false
if ATK_CHARACTER_STATE_IDLE1 == thatPlayerInNextFrame.CharacterState || ATK_CHARACTER_STATE_WALKING == thatPlayerInNextFrame.CharacterState || ATK_CHARACTER_STATE_INAIR_IDLE1 == thatPlayerInNextFrame.CharacterState {
characStateIsInterruptWaivable = true
}
if !characStateAlreadyInAir && characStateIsInterruptWaivable {
thatPlayerInNextFrame.VelY = jumpingInitVelY
}
}
// Note that by now "0 == thatPlayerInNextFrame.FramesToRecover", we should change "CharacterState" to "WALKING" or "IDLE" depending on player inputs
if 0 != decodedInput.Dx || 0 != decodedInput.Dy {
thatPlayerInNextFrame.DirX = decodedInput.Dx
thatPlayerInNextFrame.DirY = decodedInput.Dy
thatPlayerInNextFrame.VelX = decodedInput.Dx * currPlayerDownsync.Speed
thatPlayerInNextFrame.CharacterState = ATK_CHARACTER_STATE_WALKING
} else {
thatPlayerInNextFrame.CharacterState = ATK_CHARACTER_STATE_IDLE1
thatPlayerInNextFrame.VelX = 0
}
}
}
// 2. Process player movement
for i, currPlayerDownsync := range currRenderFrame.PlayersArr {
joinIndex := currPlayerDownsync.JoinIndex
effPushbacks[joinIndex-1].X, effPushbacks[joinIndex-1].Y = float64(0), float64(0)
collisionPlayerIndex := COLLISION_PLAYER_INDEX_PREFIX + joinIndex
playerCollider := collisionSysMap[collisionPlayerIndex]
thatPlayerInNextFrame := nextRenderFramePlayers[i]
// Reset playerCollider position from the "virtual grid position"
newVx, newVy := currPlayerDownsync.VirtualGridX+currPlayerDownsync.VelX, currPlayerDownsync.VirtualGridY+currPlayerDownsync.VelY
if thatPlayerInNextFrame.VelY == jumpingInitVelY {
newVy += thatPlayerInNextFrame.VelY
}
playerCollider.X, playerCollider.Y = VirtualGridToPolygonColliderBLPos(newVx, newVy, playerCollider.W*0.5, playerCollider.H*0.5, 0, 0, 0, 0, collisionSpaceOffsetX, collisionSpaceOffsetY, virtualGridToWorldRatio)
// Update in the collision system
playerCollider.Update()
if currPlayerDownsync.InAir {
thatPlayerInNextFrame.VelX += gravityX
thatPlayerInNextFrame.VelY += gravityY
}
}
// 3. Calc pushbacks for each player (after its movement) w/o bullets
for i, currPlayerDownsync := range currRenderFrame.PlayersArr {
joinIndex := currPlayerDownsync.JoinIndex
collisionPlayerIndex := COLLISION_PLAYER_INDEX_PREFIX + joinIndex
playerCollider := collisionSysMap[collisionPlayerIndex]
playerShape := playerCollider.Shape.(*resolv.ConvexPolygon)
hardPushbackNorms[joinIndex-1] = CalcHardPushbacksNorms(playerCollider, playerShape, snapIntoPlatformOverlap, &(effPushbacks[joinIndex-1]))
thatPlayerInNextFrame := nextRenderFramePlayers[i]
fallStopping := false
if collision := playerCollider.Check(0, 0); nil != collision {
for _, obj := range collision.Objects {
isBarrier, isAnotherPlayer, isBullet := false, false, false
// TODO: Make this part work in JavaScript without having to expose all types Barrier/PlayerDownsync/MeleeBullet by js.MakeWrapper.
switch obj.Data.(type) {
case *Barrier:
isBarrier = true
case *PlayerDownsync:
isAnotherPlayer = true
case *MeleeBullet:
isBullet = true
}
if isBullet {
// ignore bullets for this step
continue
}
bShape := obj.Shape.(*resolv.ConvexPolygon)
overlapped, pushbackX, pushbackY, overlapResult := CalcPushbacks(0, 0, playerShape, bShape)
if !overlapped {
continue
}
normAlignmentWithGravity := (overlapResult.OverlapX*float64(0) + overlapResult.OverlapY*float64(-1.0))
landedOnGravityPushback := (snapIntoPlatformThreshold < normAlignmentWithGravity) // prevents false snapping on the lateral sides
if landedOnGravityPushback {
// kindly note that one player might land on top of another player, and snapping is also required in such case
pushbackX, pushbackY = (overlapResult.Overlap-snapIntoPlatformOverlap)*overlapResult.OverlapX, (overlapResult.Overlap-snapIntoPlatformOverlap)*overlapResult.OverlapY
thatPlayerInNextFrame.InAir = false
}
if isAnotherPlayer {
// [WARNING] The "zero overlap collision" might be randomly detected/missed on either frontend or backend, to have deterministic result we added paddings to all sides of a playerCollider. As each velocity component of (velX, velY) being a multiple of 0.5 at any renderFrame, each position component of (x, y) can only be a multiple of 0.5 too, thus whenever a 1-dimensional collision happens between players from [player#1: i*0.5, player#2: j*0.5, not collided yet] to [player#1: (i+k)*0.5, player#2: j*0.5, collided], the overlap becomes (i+k-j)*0.5+2*s, and after snapping subtraction the effPushback magnitude for each player is (i+k-j)*0.5, resulting in 0.5-multiples-position for the next renderFrame.
pushbackX, pushbackY = (overlapResult.Overlap-snapIntoPlatformOverlap*2)*overlapResult.OverlapX, (overlapResult.Overlap-snapIntoPlatformOverlap*2)*overlapResult.OverlapY
}
for _, hardPushbackNorm := range hardPushbackNorms[joinIndex-1] {
projectedMagnitude := pushbackX*hardPushbackNorm.X + pushbackY*hardPushbackNorm.Y
if isBarrier || (isAnotherPlayer && 0 > projectedMagnitude) {
pushbackX -= projectedMagnitude * hardPushbackNorm.X
pushbackY -= projectedMagnitude * hardPushbackNorm.Y
}
}
effPushbacks[joinIndex-1].X += pushbackX
effPushbacks[joinIndex-1].Y += pushbackY
if currPlayerDownsync.InAir && landedOnGravityPushback {
fallStopping = true
}
}
}
if fallStopping {
thatPlayerInNextFrame.VelX = 0
thatPlayerInNextFrame.VelY = 0
thatPlayerInNextFrame.CharacterState = ATK_CHARACTER_STATE_IDLE1
thatPlayerInNextFrame.FramesToRecover = 0
}
if currPlayerDownsync.InAir {
oldNextCharacterState := thatPlayerInNextFrame.CharacterState
switch oldNextCharacterState {
case ATK_CHARACTER_STATE_IDLE1, ATK_CHARACTER_STATE_WALKING:
thatPlayerInNextFrame.CharacterState = ATK_CHARACTER_STATE_INAIR_IDLE1
case ATK_CHARACTER_STATE_ATK1:
thatPlayerInNextFrame.CharacterState = ATK_CHARACTER_STATE_INAIR_ATK1
case ATK_CHARACTER_STATE_ATKED1:
thatPlayerInNextFrame.CharacterState = ATK_CHARACTER_STATE_INAIR_ATKED1
}
}
}
// 4. Get players out of stuck barriers if there's any
for i, currPlayerDownsync := range currRenderFrame.PlayersArr {
joinIndex := currPlayerDownsync.JoinIndex
collisionPlayerIndex := COLLISION_PLAYER_INDEX_PREFIX + joinIndex
playerCollider := collisionSysMap[collisionPlayerIndex]
// Update "virtual grid position"
thatPlayerInNextFrame := nextRenderFramePlayers[i]
thatPlayerInNextFrame.VirtualGridX, thatPlayerInNextFrame.VirtualGridY = PolygonColliderBLToVirtualGridPos(playerCollider.X-effPushbacks[joinIndex-1].X, playerCollider.Y-effPushbacks[joinIndex-1].Y, playerCollider.W*0.5, playerCollider.H*0.5, 0, 0, 0, 0, collisionSpaceOffsetX, collisionSpaceOffsetY, worldToVirtualGridRatio)
}
return &RoomDownsyncFrame{
Id: currRenderFrame.Id + 1,
PlayersArr: nextRenderFramePlayers,
}
}
func GenerateRectCollider(wx, wy, w, h, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY float64, data interface{}, tag string) *resolv.Object {
blX, blY := WorldToPolygonColliderBLPos(wx, wy, w*0.5, h*0.5, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY)
return generateRectColliderInCollisionSpace(blX, blY, leftPadding+w+rightPadding, bottomPadding+h+topPadding, data, tag)
}
func generateRectColliderInCollisionSpace(blX, blY, w, h float64, data interface{}, tag string) *resolv.Object {
collider := resolv.NewObject(blX, blY, w, h, tag) // Unlike its frontend counter part, the position of a "resolv.Object" must be specified by "bottom-left point" because "w" and "h" must be positive, see "resolv.Object.BoundsToSpace" for details
shape := resolv.NewRectangle(0, 0, w, h)
collider.SetShape(shape)
collider.Data = data
return collider
}
func GenerateConvexPolygonCollider(unalignedSrc *Polygon2D, spaceOffsetX, spaceOffsetY float64, data interface{}, tag string) *resolv.Object {
aligned := AlignPolygon2DToBoundingBox(unalignedSrc)
var w, h float64 = 0, 0
shape := resolv.NewConvexPolygon()
for i, pi := range aligned.Points {
for j, pj := range aligned.Points {
if i == j {
continue
}
if math.Abs(pj.X-pi.X) > w {
w = math.Abs(pj.X - pi.X)
}
if math.Abs(pj.Y-pi.Y) > h {
h = math.Abs(pj.Y - pi.Y)
}
}
}
for i := 0; i < len(aligned.Points); i++ {
p := aligned.Points[i]
shape.AddPoints(p.X, p.Y)
}
collider := resolv.NewObject(aligned.Anchor.X+spaceOffsetX, aligned.Anchor.Y+spaceOffsetY, w, h, tag)
collider.SetShape(shape)
collider.Data = data
return collider
}
func AlignPolygon2DToBoundingBox(input *Polygon2D) *Polygon2D {
// Transform again to put "anchor" at the "bottom-left point (w.r.t. world space)" of the bounding box for "resolv"
boundingBoxBL := &Vec2D{
X: MAX_FLOAT64,
Y: MAX_FLOAT64,
}
for _, p := range input.Points {
if p.X < boundingBoxBL.X {
boundingBoxBL.X = p.X
}
if p.Y < boundingBoxBL.Y {
boundingBoxBL.Y = p.Y
}
}
// Now "input.Anchor" should move to "input.Anchor+boundingBoxBL", thus "boundingBoxBL" is also the value of the negative diff for all "input.Points"
output := &Polygon2D{
Anchor: &Vec2D{
X: input.Anchor.X + boundingBoxBL.X,
Y: input.Anchor.Y + boundingBoxBL.Y,
},
Points: make([]*Vec2D, len(input.Points)),
}
for i, p := range input.Points {
output.Points[i] = &Vec2D{
X: p.X - boundingBoxBL.X,
Y: p.Y - boundingBoxBL.Y,
}
}
return output
}

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@@ -0,0 +1,90 @@
package battle
type Vec2D struct {
X float64
Y float64
}
type Polygon2D struct {
Anchor *Vec2D
Points []*Vec2D
}
type PlayerDownsync struct {
Id int32
VirtualGridX int32
VirtualGridY int32
DirX int32
DirY int32
VelX int32
VelY int32
Speed int32
BattleState int32
JoinIndex int32
ColliderRadius float64
Removed bool
Score int32
LastMoveGmtMillis int32
FramesToRecover int32
Hp int32
MaxHp int32
CharacterState int32
InAir bool
Name string
DisplayName string
Avatar string
}
type InputFrameDecoded struct {
Dx int32
Dy int32
BtnALevel int32
BtnBLevel int32
}
type InputFrameUpsync struct {
InputFrameId int32
Encoded uint64
}
type InputFrameDownsync struct {
InputFrameId int32
InputList []uint64
ConfirmedList uint64
}
type Barrier struct {
Boundary *Polygon2D
}
type MeleeBullet struct {
// for offender
BattleLocalId int32
StartupFrames int32
ActiveFrames int32
RecoveryFrames int32
RecoveryFramesOnBlock int32
RecoveryFramesOnHit int32
Moveforward *Vec2D
HitboxOffset float64
HitboxSize *Vec2D
OriginatedRenderFrameId int32
// for defender
HitStunFrames int32
BlockStunFrames int32
Pushback float64
ReleaseTriggerType int32
Damage int32
OffenderJoinIndex int32
OffenderPlayerId int32
}
type RoomDownsyncFrame struct {
Id int32
PlayersArr []*PlayerDownsync
CountdownNanos int64
MeleeBullets []*MeleeBullet
BackendUnconfirmedMask uint64
ShouldForceResync bool
Players map[int32]*PlayerDownsync
}