Test_Project_Cocos/DelayNoMore
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Drafted backend collision with pushback calculations.

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This commit is contained in:
yflu
2022-10-21 22:39:08 +08:00
parent bc8989a0e6
commit 150e30db2a
4 changed files with 48 additions and 50 deletions
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69
battle_srv/models/room.go
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@@ -5,9 +5,9 @@ import (
"fmt"
"github.com/golang/protobuf/proto"
"github.com/gorilla/websocket"
"github.com/kvartborg/vector"
"github.com/solarlune/resolv"
"go.uber.org/zap"
"math"
"math/rand"
. "server/common"
"server/common/utils"
@@ -1151,19 +1151,35 @@ func (pR *Room) applyInputFrameDownsyncDynamics(fromRenderFrameId int32, toRende
continue
}
baseChange := player.Speed * pR.RollbackEstimatedDt * decodedInputSpeedFactor
dx := baseChange * float64(decodedInput[0])
dy := baseChange * float64(decodedInput[1])
oldDx, oldDy := baseChange * float64(decodedInput[0]), baseChange * float64(decodedInput[1])
dx, dy := oldDx, oldDy
collisionPlayerIndex := COLLISION_PLAYER_INDEX_PREFIX + joinIndex
playerCollider := pR.CollisionSysMap[collisionPlayerIndex]
if collision := playerCollider.Check(dx, dy, "Barrier"); collision != nil {
changeWithCollision := collision.ContactWithObject(collision.Objects[0])
Logger.Info(fmt.Sprintf("Collided: roomId=%v, playerId=%v, orig dx=%v, orig dy=%v, proposed new dx =%v, proposed new dy=%v", pR.Id, player.Id, dx, dy, changeWithCollision.X(), changeWithCollision.Y()))
// FIXME: Use a mechanism equivalent to that of the frontend!
// dx = changeWithCollision.X()
// dy = changeWithCollision.Y()
dx = 0
dy = 0
if collision := playerCollider.Check(oldDx, oldDy, "Barrier"); collision != nil {
playerShape := playerCollider.Shape.(*resolv.ConvexPolygon)
barrierShape := collision.Objects[0].Shape.(*resolv.ConvexPolygon)
origX, origY := playerShape.Position()
playerShape.SetPosition(origX+oldDx, origY+oldDy)
if colliding := IsPolygonPairColliding(playerShape, barrierShape, nil); colliding {
Logger.Info(fmt.Sprintf("Collided: playerShape=%v, oldDx=%v, oldDy=%v", playerShape, oldDx, oldDy))
overlapResult := &SatResult{
Overlap: 0,
OverlapX: 0,
OverlapY: 0,
AContainedInB: true,
BContainedInA: true,
Axis: vector.Vector{0, 0},
}
e := vector.Vector{oldDx, oldDy}.Unit()
if separatableAlongMovement := IsPolygonPairSeparatedByDir(playerShape, barrierShape, e, overlapResult); !separatableAlongMovement {
pushbackX, pushbackY := overlapResult.Overlap*overlapResult.OverlapX, overlapResult.Overlap*overlapResult.OverlapY
Logger.Info(fmt.Sprintf("Collided: playerShape=%v, oldDx=%v, oldDy=%v, toCheckBarrier=%v, pushbackX=%v, pushbackY=%v", playerShape, oldDx, oldDy, barrierShape, pushbackX, pushbackY))
dx, dy = oldDx-pushbackX, oldDy-pushbackY
}
}
playerShape.SetPosition(origX, origY)
}
playerCollider.X += dx
playerCollider.Y += dy
@@ -1203,9 +1219,7 @@ func (pR *Room) refreshColliders() {
minStep := int(3) // the approx minimum distance a player can move per frame
space := resolv.NewSpace(int(spaceW), int(spaceH), minStep, minStep) // allocate a new collision space everytime after a battle is settled
for _, player := range pR.Players {
playerCollider := resolv.NewObject(player.X-playerColliderRadius+spaceOffsetX, player.Y-playerColliderRadius+spaceOffsetY, playerColliderRadius*2, playerColliderRadius*2)
playerColliderShape := resolv.NewCircle(+playerColliderRadius, +playerColliderRadius, playerColliderRadius)
playerCollider.SetShape(playerColliderShape)
playerCollider := GenerateRectCollider(player.X, player.Y, playerColliderRadius*2, playerColliderRadius*2, spaceOffsetX, spaceOffsetY, "Player")
space.Add(playerCollider)
// Keep track of the collider in "pR.CollisionSysMap"
joinIndex := player.JoinIndex
@@ -1215,31 +1229,8 @@ func (pR *Room) refreshColliders() {
}
for _, barrier := range pR.Barriers {
var w float64 = 0
var h float64 = 0
for i, pi := range barrier.Boundary.Points {
for j, pj := range barrier.Boundary.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)
}
}
}
barrierColliderShape := resolv.NewConvexPolygon()
for _, p := range barrier.Boundary.Points {
barrierColliderShape.AddPoints(p.X, p.Y)
}
barrierCollider := resolv.NewObject(barrier.Boundary.Anchor.X+spaceOffsetX, barrier.Boundary.Anchor.Y+spaceOffsetY, w, h, "Barrier")
barrierCollider.SetShape(barrierColliderShape)
boundaryUnaligned := barrier.Boundary
barrierCollider := GenerateConvexPolygonCollider(boundaryUnaligned, spaceOffsetX, spaceOffsetY, "Barrier")
space.Add(barrierCollider)
}
}