diff --git a/battle_srv/models/room.go b/battle_srv/models/room.go
index d72c0c7..4422fcf 100644
--- a/battle_srv/models/room.go
+++ b/battle_srv/models/room.go
@@ -13,13 +13,13 @@ import (
 	"io/ioutil"
 	"jsexport/battle"
 	"math/rand"
+	"os"
 	"path/filepath"
 	"resolv"
 	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
-    "os"
 )
 
 const (
@@ -344,6 +344,19 @@ func (pR *Room) InputsBufferString(allDetails bool) string {
 	}
 }
 
+func (pR *Room) playerDownsyncStr(player *battle.PlayerDownsync) string {
+	if nil == player {
+		return ""
+	}
+	inAirInt := 0
+	if player.InAir {
+		inAirInt = 1
+	}
+	s := fmt.Sprintf("{%d,%d,%d,%d,%d,%d}", player.JoinIndex, player.VirtualGridX, player.VirtualGridY, player.VelX, player.VelY, inAirInt)
+
+	return s
+}
+
 func (pR *Room) inputFrameDownsyncStr(inputFrameDownsync *pb.InputFrameDownsync) string {
 	if nil == inputFrameDownsync {
 		return ""
@@ -364,7 +377,12 @@ func (pR *Room) rdfIdToActuallyUsedInputString() string {
 	// Appending of the array of strings can be very SLOW due to on-demand heap allocation! Use this printing with caution.
 	s := make([]string, 0)
 	for rdfId := pR.RenderFrameBuffer.StFrameId; rdfId < pR.RenderFrameBuffer.EdFrameId; rdfId++ {
-		s = append(s, fmt.Sprintf("rdfId:%d\nactuallyUsedinputList:{%v}", rdfId, pR.inputFrameDownsyncStr(pR.rdfIdToActuallyUsedInput[rdfId])))
+		rdf := pR.RenderFrameBuffer.GetByFrameId(rdfId).(*battle.RoomDownsyncFrame)
+		playersStrBldr := make([]string, 0, len(rdf.PlayersArr))
+		for _, player := range rdf.PlayersArr {
+			playersStrBldr = append(playersStrBldr, pR.playerDownsyncStr(player))
+		}
+		s = append(s, fmt.Sprintf("rdfId:%d\nplayers:[%v]\nactuallyUsedinputList:{%v}", rdfId, strings.Join(playersStrBldr, ","), pR.inputFrameDownsyncStr(pR.rdfIdToActuallyUsedInput[rdfId])))
 	}
 
 	return strings.Join(s, "\n")
@@ -406,9 +424,9 @@ func (pR *Room) StartBattle() {
 				Logger.Error("battleMainLoop, recovery spot#1, recovered from: ", zap.Any("roomId", pR.Id), zap.Any("panic", r))
 			}
 			pR.StopBattleForSettlement()
-            rdfIdToActuallyUsedInputDump := pR.rdfIdToActuallyUsedInputString()
+			rdfIdToActuallyUsedInputDump := pR.rdfIdToActuallyUsedInputString()
 			Logger.Info(fmt.Sprintf("The `battleMainLoop` for roomId=%v is stopped@renderFrameId=%v, with battleDurationFrames=%v:\n%v", pR.Id, pR.RenderFrameId, pR.BattleDurationFrames, pR.InputsBufferString(false))) // This takes sometime to print
-            os.WriteFile(fmt.Sprintf("room_%d.txt", pR.Id), []byte(rdfIdToActuallyUsedInputDump), 0644) // DEBUG ONLY
+			os.WriteFile(fmt.Sprintf("room_%d.txt", pR.Id), []byte(rdfIdToActuallyUsedInputDump), 0644)                                                                                                                   // DEBUG ONLY
 			pR.onBattleStoppedForSettlement()
 		}()
 
diff --git a/collider_visualizer/common.go b/collider_visualizer/common.go
index feab531..c054be3 100644
--- a/collider_visualizer/common.go
+++ b/collider_visualizer/common.go
@@ -2,8 +2,8 @@ package main
 
 import (
 	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/solarlune/resolv"
 	"image/color"
+	"resolv"
 )
 
 var (
diff --git a/collider_visualizer/go.mod b/collider_visualizer/go.mod
index adb6118..2bb4dcf 100644
--- a/collider_visualizer/go.mod
+++ b/collider_visualizer/go.mod
@@ -5,9 +5,9 @@ go 1.18
 require (
     jsexport v0.0.0
 	dnmshared v0.0.0
+    resolv v0.0.0
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0
 	github.com/hajimehoshi/ebiten/v2 v2.4.7
-	github.com/solarlune/resolv v0.5.1
 	golang.org/x/image v0.0.0-20220902085622-e7cb96979f69
 )
 
@@ -18,7 +18,6 @@ require (
 	github.com/hajimehoshi/file2byteslice v0.0.0-20210813153925-5340248a8f41 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/jezek/xgb v1.0.1 // indirect
-	github.com/kvartborg/vector v0.0.0-20200419093813-2cba0cabb4f0 // indirect
 	github.com/neelance/astrewrite v0.0.0-20160511093645-99348263ae86 // indirect
 	github.com/neelance/sourcemap v0.0.0-20200213170602-2833bce08e4c // indirect
 	github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749 // indirect
@@ -41,4 +40,5 @@ require (
 replace (
     dnmshared => ../dnmshared
     jsexport => ../jsexport
+    resolv => ../resolv_tailored
 )
diff --git a/collider_visualizer/main.go b/collider_visualizer/main.go
index d972b7e..fef8009 100644
--- a/collider_visualizer/main.go
+++ b/collider_visualizer/main.go
@@ -11,13 +11,13 @@ import (
 	"github.com/hajimehoshi/ebiten/v2"
 	"github.com/hajimehoshi/ebiten/v2/ebitenutil"
 	"github.com/hajimehoshi/ebiten/v2/text"
-	"github.com/solarlune/resolv"
 	"golang.org/x/image/font"
 
 	"encoding/xml"
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"resolv"
 
 	. "dnmshared"
 )
diff --git a/collider_visualizer/worldColliderDisplay.go b/collider_visualizer/worldColliderDisplay.go
index 1ac60fb..c25281a 100644
--- a/collider_visualizer/worldColliderDisplay.go
+++ b/collider_visualizer/worldColliderDisplay.go
@@ -1,14 +1,13 @@
 package main
 
 import (
-	. "jsexport/protos"
 	. "dnmshared"
-	. "dnmshared/sharedprotos"
 	"fmt"
 	"github.com/hajimehoshi/ebiten/v2"
-	"github.com/solarlune/resolv"
 	"go.uber.org/zap"
 	"image/color"
+	. "jsexport/battle"
+	"resolv"
 )
 
 type WorldColliderDisplay struct {
@@ -39,20 +38,20 @@ func NewWorldColliderDisplay(game *Game, stageDiscreteW, stageDiscreteH, stageTi
 	playerDefaultSpeed := 1 * worldToVirtualGridRatio
 	minStep := (int(float64(playerDefaultSpeed)*virtualGridToWorldRatio) << 3)
 	playerColliderRadius := float64(12)
-	playerColliders := make([]*resolv.Object, len(playerPosList.Eles))
+	playerColliders := make([]*resolv.Object, len(playerPosList))
 	snapIntoPlatformOverlap := float64(0.1)
 	space := resolv.NewSpace(int(spaceW), int(spaceH), minStep, minStep)
 	topPadding, bottomPadding, leftPadding, rightPadding := snapIntoPlatformOverlap, snapIntoPlatformOverlap, snapIntoPlatformOverlap, snapIntoPlatformOverlap
-	for i, playerPos := range playerPosList.Eles {
+	for i, playerPos := range playerPosList {
 		colliderWidth, colliderHeight := playerColliderRadius*2, playerColliderRadius*4
-		playerCollider := GenerateRectCollider(playerPos.X, playerPos.Y, colliderWidth, colliderHeight, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY, nil, "Player") // [WARNING] Deliberately not using a circle because "resolv v0.5.1" doesn't yet align circle center with space cell center, regardless of the "specified within-object offset"
+		playerCollider := GenerateRectCollider(playerPos.X, playerPos.Y, colliderWidth, colliderHeight, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY, nil, fmt.Sprintf("Player%d", i+1)) // [WARNING] Deliberately not using a circle because "resolv v0.5.1" doesn't yet align circle center with space cell center, regardless of the "specified within-object offset"
 		Logger.Info(fmt.Sprintf("Player Collider#%d: player world pos=(%.2f, %.2f), shape=%v", i, playerPos.X, playerPos.Y, ConvexPolygonStr(playerCollider.Shape.(*resolv.ConvexPolygon))))
 		playerColliders[i] = playerCollider
 		space.Add(playerCollider)
 	}
 
 	barrierLocalId := 0
-	for _, barrierUnaligned := range barrierList.Eles {
+	for _, barrierUnaligned := range barrierList {
 		barrierCollider := GenerateConvexPolygonCollider(barrierUnaligned, spaceOffsetX, spaceOffsetY, nil, "Barrier")
 		Logger.Debug(fmt.Sprintf("Added barrier: shape=%v", ConvexPolygonStr(barrierCollider.Shape.(*resolv.ConvexPolygon))))
 		space.Add(barrierCollider)
@@ -64,16 +63,14 @@ func NewWorldColliderDisplay(game *Game, stageDiscreteW, stageDiscreteH, stageTi
 	moveToCollide := true
 	if moveToCollide {
 		effPushback := Vec2D{X: float64(0), Y: float64(0)}
-		toTestPlayerCollider := playerColliders[0]
 		colliderWidth, colliderHeight := playerColliderRadius*2, playerColliderRadius*4
-		newVx, newVy := int32(-189000), int32(-497000)
-		toTestPlayerCollider.X, toTestPlayerCollider.Y = VirtualGridToPolygonColliderBLPos(newVx, newVy, colliderWidth, colliderHeight, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY, virtualGridToWorldRatio)
-		playerColliders[1].X, playerColliders[1].Y = VirtualGridToPolygonColliderBLPos(int32(-165000), int32(-504000), colliderWidth, colliderHeight, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY, virtualGridToWorldRatio)
-        playerColliders[1].Update()
+		playerColliders[0].X, playerColliders[0].Y = VirtualGridToPolygonColliderBLPos(int32(-139000-2000), int32(-474500+2000), colliderWidth, colliderHeight, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY, virtualGridToWorldRatio)
+		playerColliders[0].Update()
 
-		Logger.Info(fmt.Sprintf("Checking collision for playerShape=%v", ConvexPolygonStr(toTestPlayerCollider.Shape.(*resolv.ConvexPolygon))))
+		playerColliders[1].X, playerColliders[1].Y = VirtualGridToPolygonColliderBLPos(int32(-163000), int32(-520000), colliderWidth, colliderHeight, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY, virtualGridToWorldRatio)
+		playerColliders[1].Update()
 
-		toTestPlayerCollider.Update()
+		toTestPlayerCollider := playerColliders[1]
 		if collision := toTestPlayerCollider.Check(0, 0); collision != nil {
 			playerShape := toTestPlayerCollider.Shape.(*resolv.ConvexPolygon)
 			for _, obj := range collision.Objects {
@@ -100,15 +97,11 @@ func NewWorldColliderDisplay(game *Game, stageDiscreteW, stageDiscreteH, stageTi
 		RecoveryFrames:        int32(61),
 		RecoveryFramesOnBlock: int32(61),
 		RecoveryFramesOnHit:   int32(61),
-		Moveforward: &Vec2D{
-			X: 0,
-			Y: 0,
-		},
-		HitboxOffset: float64(24.0),
-		HitboxSize: &Vec2D{
-			X: float64(45.0),
-			Y: float64(32.0),
-		},
+		SelfMoveforwardX:      0,
+		SelfMoveforwardY:      0,
+		HitboxOffset:          float64(24.0),
+		HitboxSizeX:           float64(45.0),
+		HitboxSizeY:           float64(32.0),
 
 		// for defender
 		HitStunFrames:      int32(18),
@@ -120,9 +113,9 @@ func NewWorldColliderDisplay(game *Game, stageDiscreteW, stageDiscreteH, stageTi
 	bulletLeftToRight := false
 	if bulletLeftToRight {
 		xfac := float64(1.0)
-		offenderWx, offenderWy := playerPosList.Eles[0].X, playerPosList.Eles[0].Y
+		offenderWx, offenderWy := playerPosList[0].X, playerPosList[0].Y
 		bulletWx, bulletWy := offenderWx+xfac*meleeBullet.HitboxOffset, offenderWy
-		newBulletCollider := GenerateRectCollider(bulletWx, bulletWy, meleeBullet.HitboxSize.X, meleeBullet.HitboxSize.Y, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY, nil, "MeleeBullet")
+		newBulletCollider := GenerateRectCollider(bulletWx, bulletWy, meleeBullet.HitboxSizeX, meleeBullet.HitboxSizeY, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY, nil, "MeleeBullet")
 		space.Add(newBulletCollider)
 		bulletShape := newBulletCollider.Shape.(*resolv.ConvexPolygon)
 		Logger.Warn(fmt.Sprintf("bullet ->: Added bullet collider to space: a=%v", ConvexPolygonStr(bulletShape)))
@@ -142,10 +135,10 @@ func NewWorldColliderDisplay(game *Game, stageDiscreteW, stageDiscreteH, stageTi
 	bulletRightToLeft := false
 	if bulletRightToLeft {
 		xfac := float64(-1.0)
-		offenderWx, offenderWy := playerPosList.Eles[1].X, playerPosList.Eles[1].Y
+		offenderWx, offenderWy := playerPosList[1].X, playerPosList[1].Y
 		bulletWx, bulletWy := offenderWx+xfac*meleeBullet.HitboxOffset, offenderWy
 
-		newBulletCollider := GenerateRectCollider(bulletWx, bulletWy, meleeBullet.HitboxSize.X, meleeBullet.HitboxSize.Y, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY, nil, "MeleeBullet")
+		newBulletCollider := GenerateRectCollider(bulletWx, bulletWy, meleeBullet.HitboxSizeX, meleeBullet.HitboxSizeY, topPadding, bottomPadding, leftPadding, rightPadding, spaceOffsetX, spaceOffsetY, nil, "MeleeBullet")
 		space.Add(newBulletCollider)
 		bulletShape := newBulletCollider.Shape.(*resolv.ConvexPolygon)
 		Logger.Warn(fmt.Sprintf("bullet <-: Added bullet collider to space: a=%v", ConvexPolygonStr(bulletShape)))
@@ -172,11 +165,14 @@ func (world *WorldColliderDisplay) Update() {
 func (world *WorldColliderDisplay) Draw(screen *ebiten.Image) {
 
 	for _, o := range world.Space.Objects() {
-		if o.HasTags("Player") {
-			drawColor := color.RGBA{0, 255, 0, 255}
+		if o.HasTags("Player1") {
+			drawColor := color.RGBA{255, 0, 0, 255}
+			DrawPolygon(screen, o.Shape.(*resolv.ConvexPolygon), drawColor)
+		} else if o.HasTags("Player2") {
+			drawColor := color.RGBA{0, 0, 255, 255}
 			DrawPolygon(screen, o.Shape.(*resolv.ConvexPolygon), drawColor)
 		} else if o.HasTags("MeleeBullet") {
-			drawColor := color.RGBA{0, 0, 255, 255}
+			drawColor := color.RGBA{78, 255, 112, 255}
 			DrawPolygon(screen, o.Shape.(*resolv.ConvexPolygon), drawColor)
 		} else {
 			drawColor := color.RGBA{60, 60, 60, 255}
diff --git a/frontend/assets/scripts/Map.js b/frontend/assets/scripts/Map.js
index 8c29b44..f98c3a8 100644
--- a/frontend/assets/scripts/Map.js
+++ b/frontend/assets/scripts/Map.js
@@ -1206,6 +1206,11 @@ ${self._stringifyRdfIdToActuallyUsedInput()}`);
     return `[stRenderFrameId=${self.recentRenderCache.stFrameId}, edRenderFrameId=${self.recentRenderCache.edFrameId})`;
   },
 
+  playerDownsyncStr(playerDownsync) {
+    if (null == playerDownsync) return "";
+    return `{${playerDownsync.JoinIndex},${playerDownsync.VirtualGridX},${playerDownsync.VirtualGridY},${playerDownsync.VelX},${playerDownsync.VelY},${playerDownsync.InAir ? 1 : 0}}`;
+  },
+
   inputFrameDownsyncStr(inputFrameDownsync) {
     if (null == inputFrameDownsync) return "";
     const self = this;
@@ -1227,7 +1232,13 @@ ${self._stringifyRdfIdToActuallyUsedInput()}`);
     let s = [];
     for (let i = self.recentRenderCache.stFrameId; i < self.recentRenderCache.edFrameId; i++) {
       const actuallyUsedInputClone = self.rdfIdToActuallyUsedInput.get(i);
+      const rdf = self.recentRenderCache.getByFrameId(i);
+      const playersStrBldr = [];
+      for (let k in rdf.PlayersArr) {
+        playersStrBldr.push(self.playerDownsyncStr(rdf.PlayersArr[k]));
+      }
       s.push(`rdfId:${i}
+players:[${playersStrBldr.join(',')}]
 actuallyUsedinputList:{${self.inputFrameDownsyncStr(actuallyUsedInputClone)}}`);
     }