More preparations on backend to sync jumping.

This commit is contained in:
genxium 2022-12-12 19:11:59 +08:00
parent 7985a242fd
commit 5c06cfdbac
8 changed files with 240 additions and 413 deletions

View File

@ -754,7 +754,7 @@ func (pR *Room) OnDismissed() {
pR.InputFrameUpsyncDelayTolerance = 2
pR.MaxChasingRenderFramesPerUpdate = 8
pR.BackendDynamicsEnabled = true // [WARNING] When "false", recovery upon reconnection wouldn't work!
pR.BackendDynamicsEnabled = false // [WARNING] When "false", recovery upon reconnection wouldn't work!
punchSkillId := int32(1)
pR.MeleeSkillConfig = make(map[int32]*MeleeBullet, 0)
pR.MeleeSkillConfig[punchSkillId] = &MeleeBullet{
@ -782,6 +782,12 @@ func (pR *Room) OnDismissed() {
Damage: int32(5),
}
pR.SnapIntoPlatformOverlap = float64(0.1)
pR.SnapIntoPlatformThreshold = float64(0.5)
pR.JumpingInitVelY = int32(float64(6) * pR.WorldToVirtualGridRatio)
pR.GravityX = 0
pR.GravityY = -(4*pR.JumpingInitVelY + (pR.ServerFps - 1)) / pR.ServerFps // i.e. -Math.ceil(4*jumpingInitVelY / serverFps)
pR.ChooseStage()
pR.EffectivePlayerCount = 0
@ -1502,10 +1508,12 @@ func (pR *Room) applyInputFrameDownsyncDynamicsOnSingleRenderFrame(delayedInputF
func (pR *Room) 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,
}
}

View File

@ -268,6 +268,11 @@ func Serve(c *gin.Context) {
SpAtkLookupFrames: pRoom.SpAtkLookupFrames,
RenderCacheSize: pRoom.RenderCacheSize,
MeleeSkillConfig: pRoom.MeleeSkillConfig,
SnapIntoPlatformOverlap: pRoom.SnapIntoPlatformOverlap,
SnapIntoPlatformThreshold: pRoom.SnapIntoPlatformThreshold,
JumpingInitVelY: pRoom.JumpingInitVelY,
GravityX: pRoom.GravityX,
GravityY: pRoom.GravityY,
}
resp := &pb.WsResp{

View File

@ -1,18 +1,18 @@
<?xml version="1.0" encoding="UTF-8"?>
<map version="1.2" tiledversion="1.2.3" orientation="orthogonal" renderorder="right-down" width="128" height="128" tilewidth="16" tileheight="16" infinite="0" nextlayerid="3" nextobjectid="73">
<map version="1.2" tiledversion="1.2.3" orientation="orthogonal" renderorder="right-down" width="128" height="128" tilewidth="16" tileheight="16" infinite="0" nextlayerid="3" nextobjectid="79">
<tileset firstgid="1" source="tiles0.tsx"/>
<tileset firstgid="65" source="tiles1.tsx"/>
<tileset firstgid="129" source="tiles2.tsx"/>
<layer id="2" name="Ground" width="128" height="128">
<data encoding="base64" compression="zlib">
eJzt3D9v00AYwGErFUuHigqB1J0Bic+BhDqgTnRj6gdBYmdkZILviSNiFKwkTlz73rPfZ3gUKcmQ3O/sXP5crpqmuQIAAAAAAAAAAAAAAAAAgBGud6IfB+U87en6PyUU3SGy/2an6/+ldX/EZoX0/7//Mfqvz37/+4H+1xW00n++/ofov27b5/5659DY9M8J0a30L9s/A/31j+4Q2f/FCNHN9Ndff/31j+lfA/31119//fXXf1n9v595v9sd/dfV/1fr55Hbtt8//2590j+8/9gx7T5T/PZM+uuvv/7bx3LXo//6+9/1+jv+9dc/vv/LAVP236d/bP+h7of6/2h9vlDX3/qvnv7ntn9orP+X4tz+57bf6L8oQ/0PNX7fujnSvt+/7+FC+sf1P9T+Zk+/+xz937Te6l9N/1Pn/f3+U9O/3v5j1oiX0r98/3PmQH8sp+w7ZMr+mwpa1Nh/qjE+ZUx7/dfTP5r+ueeA/vrrr390i6j+0eMfLfv7v+jxj6Z/bvrnpn9u+uemf27656Z/bvrnpn9u+uemf27656Z/bvrnpn9u+o/3qie6pf7L7n87YI7fqOlfT3/Hf939+731XzbrP/1Lj/ex1/bI/psKWtTc/3HnY9N8/fD38t91j4Ht9C/Tv+ve182D6Ib6z9f/1N6gofdrkef1S/pHd6i1f9f53TPUvodM/3nVvo8we/+593zWvpc0e/9Sx3+nts+J9C/bv5sDl9K/XP8p1/Nj/ttH/3Uf/yX/30n/ZfYvNQ/0zy17f+I7AAAAAAAAAAAAAAAAAOX9ARz6kGc=
eJzt3DFv00AYgGErFUuHigqBVGYGJP4ECxLqgDrRjak/BImdkZGJ/k8cNUbBSmLnavu75HuGR5WaDum9Z+fi5HzRNM0FAAAAAAAAAAAAAAAAAAAUuNyIfh4s52FL1/8hoegOkf1XG13/b63bPVZnSP//+++j//nZ7n870P+yglb6z9d/F/3P2/p/f72xa2z654ToVvov2z8D/fWP7hDZ/0WB6Gb666+//vrH9K+B/vrrr7/++ut/Wv1/jvy76w39z6v/n9bvPY+tP39+bH3RP7x/6Zh21xR/PJP++uuv//q53PTof/79b3r9Hf/66x/f/+WAKftv0z+2/1D3Xf1/tb4eqetv/VdP/7Ht7xrr/1Mxtv/Y9iv9T8pQ/12NP7Su9rTv9++7O5L+cf13tb/a0u8+R/83rXf6V9P/0Hl/u//U9K+3f8ka8Vj6L99/zBzoj+WUfYdM2X9VQYsa+081xoeUtNf/fPpH0z/3HNBff/31j24R1T96/KNlf/8XPf7R9M9N/9z0z03/3PTPTf/c9M9N/9z0z03/3PTPTf/c9M9N/9z0z03/cq96olvqf9r9rwfM8R01/evp7/ivu3+/t/6nzfpP/6XHe99re2T/VQUtau5/v/G5ab5/evr573f3ge30X6Z/172vmwfRDfWfr/+hvUFD79ciz+vH9I/uUGv/rvP7Z6h9D5n+86p9H2H2/nPv+ax9L2n2/ksd/53arhPpv2z/bg4cS//l+k+5ni+5t4/+9Rz/z50Hpfd3Wup1Qv9xSufB28L+j83T9SX96+hfqu3/sbR/Z855kL0/8R0AAAAAAAAAAAAAAACA5f0FyTyU0g==
</data>
</layer>
<objectgroup id="1" name="PlayerStartingPos">
<object id="135" x="980" y="1588.67">
<object id="135" x="1170" y="1539.67">
<point/>
</object>
<object id="137" x="1349" y="1580.5">
<object id="137" x="1254" y="1332">
<point/>
</object>
</objectgroup>
@ -175,12 +175,12 @@
<property name="boundary_type" value="barrier"/>
</properties>
</object>
<object id="54" x="656" y="1502.5" width="80.5" height="16.5">
<object id="54" x="656" y="1503.5" width="80.5" height="15.5">
<properties>
<property name="boundary_type" value="barrier"/>
</properties>
</object>
<object id="55" x="735" y="1550" width="113.5" height="17.5">
<object id="55" x="735" y="1552" width="113.5" height="15.5">
<properties>
<property name="boundary_type" value="barrier"/>
</properties>
@ -195,7 +195,7 @@
<property name="boundary_type" value="barrier"/>
</properties>
</object>
<object id="59" x="1039.75" y="1568" width="224.25" height="15.5">
<object id="59" x="1039.75" y="1568" width="224.25" height="47.75">
<properties>
<property name="boundary_type" value="barrier"/>
</properties>
@ -205,11 +205,6 @@
<property name="boundary_type" value="barrier"/>
</properties>
</object>
<object id="61" x="1040" y="1583" width="256.5" height="15">
<properties>
<property name="boundary_type" value="barrier"/>
</properties>
</object>
<object id="62" x="1040.13" y="1552.5" width="208" height="15.5">
<properties>
<property name="boundary_type" value="barrier"/>
@ -269,5 +264,37 @@
</properties>
<polyline points="0,0 -0.333333,16.9105 15,17.3334"/>
</object>
<object id="73" x="783.75" y="1567.5" width="96.25" height="15.5">
<properties>
<property name="boundary_type" value="barrier"/>
</properties>
</object>
<object id="74" x="815.75" y="1583.75" width="96.25" height="15.5">
<properties>
<property name="boundary_type" value="barrier"/>
</properties>
</object>
<object id="75" x="1264.25" y="1599" width="47.75" height="17.25">
<properties>
<property name="boundary_type" value="barrier"/>
</properties>
</object>
<object id="76" x="1264.63" y="1583.63" width="15.5" height="15.25">
<properties>
<property name="boundary_type" value="barrier"/>
</properties>
</object>
<object id="77" x="1280.5" y="1583.75">
<properties>
<property name="boundary_type" value="barrier"/>
</properties>
<polyline points="0,0 0,15.25 15.75,15.25"/>
</object>
<object id="78" x="1312" y="1599.25">
<properties>
<property name="boundary_type" value="barrier"/>
</properties>
<polyline points="0,0 0,17 15.75,17"/>
</object>
</objectgroup>
</map>

View File

@ -408,7 +408,7 @@
"ctor": "Float64Array",
"array": [
3,
20,
40,
0,
0,
0,

View File

@ -440,7 +440,7 @@
"array": [
0,
0,
209.73151519075364,
215.64032554232523,
0,
0,
0,

View File

@ -454,7 +454,7 @@
"array": [
0,
0,
209.73151519075364,
215.64032554232523,
0,
0,
0,

View File

@ -402,6 +402,7 @@ cc.Class({
console.log(`Received parsedBattleColliderInfo via ws`);
// TODO: Upon reconnection, the backend might have already been sending down data that'd trigger "onRoomDownsyncFrame & onInputFrameDownsyncBatch", but frontend could reject those data due to "battleState != PlayerBattleState.ACTIVE".
Object.assign(self, parsedBattleColliderInfo);
self.gravityX = parsedBattleColliderInfo.gravityX; // to avoid integer default value 0 accidentally becoming null in "Object.assign(...)"
self.tooFastDtIntervalMillis = 0.5 * self.rollbackEstimatedDtMillis;
const tiledMapIns = self.node.getComponent(cc.TiledMap);
@ -834,6 +835,7 @@ cc.Class({
*/
// [WARNING] Don't try to get "prevRdf(i.e. renderFrameId == latest-1)" by "self.recentRenderCache.getByFrameId(...)" here, as the cache might have been updated by asynchronous "onRoomDownsyncFrame(...)" calls!
self.applyRoomDownsyncFrameDynamics(rdf, prevRdf);
self.showDebugBoundaries();
++self.renderFrameId; // [WARNING] It's important to increment the renderFrameId AFTER all the operations above!!!
self.lastRenderFrameIdTriggeredAt = performance.now();
let t3 = performance.now();
@ -978,6 +980,73 @@ cc.Class({
}
},
showDebugBoundaries() {
const self = this;
if (self.showCriticalCoordinateLabels) {
let g = self.g;
g.clear();
for (let k in self.collisionSys._bvh._bodies) {
const body = self.collisionSys._bvh._bodies[k];
if (!body._polygon) continue;
if (null != body.data && null != body.data.joinIndex) {
// character
if (1 == body.data.joinIndex) {
g.strokeColor = cc.Color.BLUE;
} else {
g.strokeColor = cc.Color.RED;
}
} else {
// barrier
g.strokeColor = cc.Color.WHITE;
}
g.moveTo(body.x, body.y);
const cnt = body._coords.length;
for (let j = 0; j < cnt; j += 2) {
const x = body._coords[j],
y = body._coords[j + 1];
g.lineTo(x, y);
}
g.lineTo(body.x, body.y);
g.stroke();
}
// For convenience of recovery upon reconnection, active bullets are always created & immediately removed from "collisionSys" within "applyInputFrameDownsyncDynamicsOnSingleRenderFrame"
for (let k in rdf.meleeBullets) {
const meleeBullet = rdf.meleeBullets[k];
if (
meleeBullet.originatedRenderFrameId + meleeBullet.startupFrames <= rdf.id
&&
meleeBullet.originatedRenderFrameId + meleeBullet.startupFrames + meleeBullet.activeFrames > rdf.id
) {
const offender = rdf.players[meleeBullet.offenderPlayerId];
if (1 == offender.joinIndex) {
g.strokeColor = cc.Color.BLUE;
} else {
g.strokeColor = cc.Color.RED;
}
let xfac = 1; // By now, straight Punch offset doesn't respect "y-axis"
if (0 > offender.dirX) {
xfac = -1;
}
const [offenderWx, offenderWy] = self.virtualGridToWorldPos(offender.virtualGridX, offender.virtualGridY);
const bulletWx = offenderWx + xfac * meleeBullet.hitboxOffset;
const bulletWy = offenderWy + 0.5 * meleeBullet.hitboxSize.y;
const [bulletCx, bulletCy] = self.worldToPolygonColliderAnchorPos(bulletWx, bulletWy, meleeBullet.hitboxSize.x * 0.5, meleeBullet.hitboxSize.y * 0.5),
pts = [[0, 0], [meleeBullet.hitboxSize.x, 0], [meleeBullet.hitboxSize.x, meleeBullet.hitboxSize.y], [0, meleeBullet.hitboxSize.y]];
g.moveTo(bulletCx, bulletCy);
for (let j = 0; j < pts.length; j += 1) {
g.lineTo(pts[j][0] + bulletCx, pts[j][1] + bulletCy);
}
g.lineTo(bulletCx, bulletCy);
g.stroke();
}
}
}
},
getCachedInputFrameDownsyncWithPrediction(inputFrameId) {
const self = this;
const inputFrameDownsync = self.recentInputCache.getByFrameId(inputFrameId);
@ -1004,7 +1073,10 @@ cc.Class({
virtualGridY: currPlayerDownsync.virtualGridY,
dirX: currPlayerDownsync.dirX,
dirY: currPlayerDownsync.dirY,
velX: currPlayerDownsync.velX,
velY: currPlayerDownsync.velY,
characterState: currPlayerDownsync.characterState,
inAir: true, // will be updated if collided with a barrier with "0 > pushbackY"
speed: currPlayerDownsync.speed,
battleState: currPlayerDownsync.battleState,
score: currPlayerDownsync.score,
@ -1018,12 +1090,17 @@ cc.Class({
const nextRenderFrameMeleeBullets = [];
const bulletPushbacks = new Array(self.playerRichInfoArr.length); // Guaranteed determinism regardless of traversal order
const effPushbacks = new Array(self.playerRichInfoArr.length); // Guaranteed determinism regardless of traversal order
// Guaranteed determinism regardless of traversal order
const jumpTriggered = new Array(self.playerRichInfoArr.length);
const movements = new Array(self.playerRichInfoArr.length);
const bulletPushbacks = new Array(self.playerRichInfoArr.length);
const effPushbacks = new Array(self.playerRichInfoArr.length);
// Reset playerCollider position from the "virtual grid position"
for (let j in self.playerRichInfoArr) {
const joinIndex = parseInt(j) + 1;
jumpTriggered[joinIndex - 1] = false;
movements[joinIndex - 1] = [0.0, 0.0];
bulletPushbacks[joinIndex - 1] = [0.0, 0.0];
effPushbacks[joinIndex - 1] = [0.0, 0.0];
const playerRichInfo = self.playerRichInfoArr[j];
@ -1031,10 +1108,20 @@ cc.Class({
const collisionPlayerIndex = self.collisionPlayerIndexPrefix + joinIndex;
const playerCollider = collisionSysMap.get(collisionPlayerIndex);
const currPlayerDownsync = currRenderFrame.players[playerId];
const thatPlayerInNextFrame = nextRenderFramePlayers[playerId];
const newVx = currPlayerDownsync.virtualGridX;
const newVy = currPlayerDownsync.virtualGridY;
[playerCollider.x, playerCollider.y] = self.virtualGridToPolygonColliderAnchorPos(newVx, newVy, self.playerRichInfoArr[joinIndex - 1].colliderRadius, self.playerRichInfoArr[joinIndex - 1].colliderRadius);
// Process gravity before anyother interaction, by now "currPlayerDownsync.velX & velY" are properly snapped to be parallel to the edge of its standing platform if necessary
[movements[joinIndex - 1][0], movements[joinIndex - 1][1]] = self.virtualGridToWorldPos(currPlayerDownsync.velX, currPlayerDownsync.velY);
playerCollider.x += movements[joinIndex - 1][0];
playerCollider.y += movements[joinIndex - 1][1];
if (currPlayerDownsync.inAir) {
thatPlayerInNextFrame.velX += self.gravityX;
thatPlayerInNextFrame.velY += self.gravityY;
}
}
// Check bullet-anything collisions first, because the pushbacks caused by bullets might later be reverted by player-barrier collision
@ -1087,8 +1174,12 @@ cc.Class({
}
bulletPushbacks[joinIndex - 1][0] += xfac * bulletCollider.data.pushback; // Only for straight punch, there's no y-pushback
bulletPushbacks[joinIndex - 1][1] += 0;
const thatAckedPlayerInCurFrame = currRenderFrame.players[potential.data.id];
const thatAckedPlayerInNextFrame = nextRenderFramePlayers[potential.data.id];
thatAckedPlayerInNextFrame.characterState = window.ATK_CHARACTER_STATE.Atked1[0];
if (thatAckedPlayerInCurFrame.inAir) {
thatAckedPlayerInNextFrame.characterState = window.toInAirConjugate(thatAckedPlayerInNextFrame.characterState);
}
const oldFramesToRecover = thatAckedPlayerInNextFrame.framesToRecover;
thatAckedPlayerInNextFrame.framesToRecover = (oldFramesToRecover > bulletCollider.data.hitStunFrames ? oldFramesToRecover : bulletCollider.data.hitStunFrames); // In case the hit player is already stun, we extend it
}
@ -1136,9 +1227,25 @@ cc.Class({
}
const decodedInput = self.ctrl.decodeInput(inputList[joinIndex - 1]);
const prevDecodedInput = (null == delayedInputFrameForPrevRenderFrame ? null : self.ctrl.decodeInput(delayedInputFrameForPrevRenderFrame.inputList[joinIndex - 1]));
const prevBtnALevel = (null == prevDecodedInput ? 0 : prevDecodedInput.btnALevel);
const prevBtnBLevel = (null == prevDecodedInput ? 0 : prevDecodedInput.btnBLevel);
/*
[WARNING] Player input alone WOULD NOT take "characterState" into any "ATK_CHARACTER_STATE_IN_AIR_SET", only after the calculation of "effPushbacks" do we know exactly whether or not a player is "inAir", the finalize the transition of "thatPlayerInNextFrame.characterState".
*/
if (1 == decodedInput.btnBLevel && 0 == prevBtnBLevel) {
const characStateAlreadyInAir = window.ATK_CHARACTER_STATE_IN_AIR_SET.has(thatPlayerInNextFrame.characterState);
const characStateIsInterruptWaivable = window.ATK_CHARACTER_STATE_INTERRUPT_WAIVE_SET.has(thatPlayerInNextFrame.characterState);
if (
!characStateAlreadyInAir
&&
characStateIsInterruptWaivable
) {
thatPlayerInNextFrame.velY = self.jumpingInitVelY;
jumpTriggered[joinIndex - 1] = true;
console.log(`playerId=${playerId}, joinIndex=${joinIndex} triggered a rising-edge of btnB at renderFrame.id=${currRenderFrame.id}, delayedInputFrame.id=${delayedInputFrame.inputFrameId}, nextVelY=${thatPlayerInNextFrame.velY}, characStateAlreadyInAir=${characStateAlreadyInAir}, characStateIsInterruptWaivable=${characStateIsInterruptWaivable}`);
}
}
if (1 == decodedInput.btnALevel && 0 == prevBtnALevel) {
// console.log(`playerId=${playerId} triggered a rising-edge of btnA at renderFrame.id=${currRenderFrame.id}, delayedInputFrame.id=${delayedInputFrame.inputFrameId}`);
@ -1155,22 +1262,28 @@ cc.Class({
// console.log(`A rising-edge of meleeBullet is created at renderFrame.id=${currRenderFrame.id}, delayedInputFrame.id=${delayedInputFrame.inputFrameId}`);
thatPlayerInNextFrame.characterState = window.ATK_CHARACTER_STATE.Atk1[0];
if (false == currPlayerDownsync.inAir) {
thatPlayerInNextFrame.velX = 0; // prohibits simultaneous movement with Atk1 on the ground
}
}
} else if (0 == decodedInput.btnALevel && 1 == prevBtnALevel) {
// console.log(`playerId=${playerId} triggered a falling-edge of btnA at renderFrame.id=${currRenderFrame.id}, delayedInputFrame.id=${delayedInputFrame.inputFrameId}`);
} else {
// No bullet trigger, process movement inputs
// No bullet trigger, process joystick movement inputs (except for jumping).
if (0 != decodedInput.dx || 0 != decodedInput.dy) {
// Update directions and thus would eventually update moving animation accordingly
thatPlayerInNextFrame.dirX = decodedInput.dx;
thatPlayerInNextFrame.dirY = decodedInput.dy;
thatPlayerInNextFrame.velX = decodedInput.dx * currPlayerDownsync.speed;
thatPlayerInNextFrame.characterState = window.ATK_CHARACTER_STATE.Walking[0];
} else {
thatPlayerInNextFrame.characterState = window.ATK_CHARACTER_STATE.Idle1[0];
thatPlayerInNextFrame.velX = 0;
}
}
if (currPlayerDownsync.inAir) {
thatPlayerInNextFrame.characterState = window.toInAirConjugate(thatPlayerInNextFrame.characterState);
}
const [movementX, movementY] = self.virtualGridToWorldPos(decodedInput.dx + currPlayerDownsync.speed * decodedInput.dx, decodedInput.dy + currPlayerDownsync.speed * decodedInput.dy);
playerCollider.x += movementX;
playerCollider.y += movementY;
}
}
@ -1183,15 +1296,50 @@ cc.Class({
const collisionPlayerIndex = self.collisionPlayerIndexPrefix + joinIndex;
const playerCollider = collisionSysMap.get(collisionPlayerIndex);
const potentials = playerCollider.potentials();
const currPlayerDownsync = currRenderFrame.players[playerId];
const thatPlayerInNextFrame = nextRenderFramePlayers[playerId];
let fallStopping = false;
let [snappedIntoPlatformEx, snappedIntoPlatformEy] = [null, null];
for (const potential of potentials) {
// Test if the player collides with the wall
if (!playerCollider.collides(potential, result2)) continue;
// Push the player out of the wall
effPushbacks[joinIndex - 1][0] += result2.overlap * result2.overlap_x;
effPushbacks[joinIndex - 1][1] += result2.overlap * result2.overlap_y;
let [pushbackX, pushbackY] = [result2.overlap * result2.overlap_x, result2.overlap * result2.overlap_y];
if (null == potential.data) {
// "null == potential.data" implies a barrier
const normAlignmentWithGravity = (result2.overlap_x * 0 + result2.overlap_y * (-1.0));
const flatEnough = (self.snapIntoPlatformThreshold < normAlignmentWithGravity); // prevents false snapping on the lateral sides
const remainsNotInAir = (!currPlayerDownsync.inAir && flatEnough);
const localFallStopping = (currPlayerDownsync.inAir && flatEnough);
if (remainsNotInAir || localFallStopping) {
fallStopping |= localFallStopping;
[pushbackX, pushbackY] = [(result2.overlap - self.snapIntoPlatformOverlap) * result2.overlap_x, (result2.overlap - self.snapIntoPlatformOverlap) * result2.overlap_y]
// [overlay_x, overlap_y] is the unit vector that points into the platform; FIXME: Should only assign to [snappedIntoPlatformEx, snappedIntoPlatformEy] at most once!
snappedIntoPlatformEx = -result2.overlap_y;
snappedIntoPlatformEy = result2.overlap_x;
if (snappedIntoPlatformEx * currPlayerDownsync.dirX + snappedIntoPlatformEy * currPlayerDownsync.dirY) {
[snappedIntoPlatformEx, snappedIntoPlatformEy] = [-snappedIntoPlatformEx, -snappedIntoPlatformEy];
}
}
}
// What if we're on the edge of 2 barriers? Would adding up make an unexpected bounce?
effPushbacks[joinIndex - 1][0] += pushbackX;
effPushbacks[joinIndex - 1][1] += pushbackY;
}
if (false == jumpTriggered[joinIndex - 1] && null != snappedIntoPlatformEx && null != snappedIntoPlatformEy) {
thatPlayerInNextFrame.inAir = false;
if (fallStopping) {
thatPlayerInNextFrame.velY = 0;
thatPlayerInNextFrame.velX = 0;
thatPlayerInNextFrame.characterState = window.ATK_CHARACTER_STATE.Idle1[0];
thatPlayerInNextFrame.framesToRecover = 0;
}
const dotProd = thatPlayerInNextFrame.velX * snappedIntoPlatformEx + thatPlayerInNextFrame.velY * snappedIntoPlatformEy;
[thatPlayerInNextFrame.velX, thatPlayerInNextFrame.velY] = [dotProd * snappedIntoPlatformEx, dotProd * snappedIntoPlatformEy];
}
}
// Get players out of stuck barriers if there's any
for (let j in self.playerRichInfoArr) {
const joinIndex = parseInt(j) + 1;
const playerId = self.playerRichInfoArr[j].id;
@ -1201,8 +1349,6 @@ cc.Class({
[thatPlayerInNextFrame.virtualGridX, thatPlayerInNextFrame.virtualGridY] = self.polygonColliderAnchorToVirtualGridPos(playerCollider.x - effPushbacks[joinIndex - 1][0], playerCollider.y - effPushbacks[joinIndex - 1][1], self.playerRichInfoArr[j].colliderRadius, self.playerRichInfoArr[j].colliderRadius);
}
}
return window.pb.protos.RoomDownsyncFrame.create({
id: currRenderFrame.id + 1,
players: nextRenderFramePlayers,

View File

@ -39,6 +39,7 @@ cc.Class({
self.rollbackEstimatedDt = 0.016667;
self.rollbackEstimatedDtMillis = 16.667;
self.rollbackEstimatedDtNanos = 16666666;
self.tooFastDtIntervalMillis = 0.5 * self.rollbackEstimatedDtMillis;
self.worldToVirtualGridRatio = 1000;
self.virtualGridToWorldRatio = 1.0 / self.worldToVirtualGridRatio;
@ -206,7 +207,8 @@ cc.Class({
const self = this;
if (ALL_BATTLE_STATES.IN_BATTLE == self.battleState) {
const elapsedMillisSinceLastFrameIdTriggered = performance.now() - self.lastRenderFrameIdTriggeredAt;
if (elapsedMillisSinceLastFrameIdTriggered < (self.rollbackEstimatedDtMillis)) {
if (elapsedMillisSinceLastFrameIdTriggered < self.tooFastDtIntervalMillis) {
// [WARNING] We should avoid a frontend ticking too fast to prevent cheating, as well as ticking too slow to cause a "resync avalanche" that impacts user experience!
// console.debug("Avoiding too fast frame@renderFrameId=", self.renderFrameId, ": elapsedMillisSinceLastFrameIdTriggered=", elapsedMillisSinceLastFrameIdTriggered);
return;
}
@ -223,373 +225,12 @@ cc.Class({
const [prevRdf, rdf] = self.rollbackAndChase(self.renderFrameId, self.renderFrameId + 1, self.collisionSys, self.collisionSysMap, false);
self.applyRoomDownsyncFrameDynamics(rdf, prevRdf);
self.showDebugBoundaries();
++self.renderFrameId;
self.lastRenderFrameIdTriggeredAt = performance.now();
let t3 = performance.now();
} catch (err) {
console.error("Error during Map.update", err);
} finally {
++self.renderFrameId; // [WARNING] It's important to increment the renderFrameId AFTER all the operations above!!!
}
}
},
applyInputFrameDownsyncDynamicsOnSingleRenderFrame(delayedInputFrame, currRenderFrame, collisionSys, collisionSysMap) {
const self = this;
const nextRenderFramePlayers = {};
for (let playerId in currRenderFrame.players) {
const currPlayerDownsync = currRenderFrame.players[playerId];
nextRenderFramePlayers[playerId] = {
id: playerId,
virtualGridX: currPlayerDownsync.virtualGridX,
virtualGridY: currPlayerDownsync.virtualGridY,
dirX: currPlayerDownsync.dirX,
dirY: currPlayerDownsync.dirY,
velX: currPlayerDownsync.velX,
velY: currPlayerDownsync.velY,
characterState: currPlayerDownsync.characterState,
inAir: true, // will be updated if collided with a barrier with "0 > pushbackY"
speed: currPlayerDownsync.speed,
battleState: currPlayerDownsync.battleState,
score: currPlayerDownsync.score,
removed: currPlayerDownsync.removed,
joinIndex: currPlayerDownsync.joinIndex,
framesToRecover: (0 < currPlayerDownsync.framesToRecover ? currPlayerDownsync.framesToRecover - 1 : 0),
hp: currPlayerDownsync.hp,
maxHp: currPlayerDownsync.maxHp,
};
}
const nextRenderFrameMeleeBullets = [];
// Guaranteed determinism regardless of traversal order
const jumpTriggered = new Array(self.playerRichInfoArr.length);
const movements = new Array(self.playerRichInfoArr.length);
const bulletPushbacks = new Array(self.playerRichInfoArr.length);
const effPushbacks = new Array(self.playerRichInfoArr.length);
// Reset playerCollider position from the "virtual grid position"
for (let j in self.playerRichInfoArr) {
const joinIndex = parseInt(j) + 1;
jumpTriggered[joinIndex - 1] = false;
movements[joinIndex - 1] = [0.0, 0.0];
bulletPushbacks[joinIndex - 1] = [0.0, 0.0];
effPushbacks[joinIndex - 1] = [0.0, 0.0];
const playerRichInfo = self.playerRichInfoArr[j];
const playerId = playerRichInfo.id;
const collisionPlayerIndex = self.collisionPlayerIndexPrefix + joinIndex;
const playerCollider = collisionSysMap.get(collisionPlayerIndex);
const currPlayerDownsync = currRenderFrame.players[playerId];
const thatPlayerInNextFrame = nextRenderFramePlayers[playerId];
const newVx = currPlayerDownsync.virtualGridX;
const newVy = currPlayerDownsync.virtualGridY;
[playerCollider.x, playerCollider.y] = self.virtualGridToPolygonColliderAnchorPos(newVx, newVy, self.playerRichInfoArr[joinIndex - 1].colliderRadius, self.playerRichInfoArr[joinIndex - 1].colliderRadius);
// Process gravity before anyother interaction, by now "currPlayerDownsync.velX & velY" are properly snapped to be parallel to the edge of its standing platform if necessary
[movements[joinIndex - 1][0], movements[joinIndex - 1][1]] = self.virtualGridToWorldPos(currPlayerDownsync.velX, currPlayerDownsync.velY);
playerCollider.x += movements[joinIndex - 1][0];
playerCollider.y += movements[joinIndex - 1][1];
if (currPlayerDownsync.inAir) {
thatPlayerInNextFrame.velX += self.gravityX;
thatPlayerInNextFrame.velY += self.gravityY;
}
}
// Check bullet-anything collisions first, because the pushbacks caused by bullets might later be reverted by player-barrier collision
const bulletColliders = new Map(); // Will all be removed at the end of `applyInputFrameDownsyncDynamicsOnSingleRenderFrame` due to the need for being rollback-compatible
const removedBulletsAtCurrFrame = new Set();
for (let k in currRenderFrame.meleeBullets) {
const meleeBullet = currRenderFrame.meleeBullets[k];
if (
meleeBullet.originatedRenderFrameId + meleeBullet.startupFrames <= currRenderFrame.id
&&
meleeBullet.originatedRenderFrameId + meleeBullet.startupFrames + meleeBullet.activeFrames > currRenderFrame.id
) {
const collisionBulletIndex = self.collisionBulletIndexPrefix + meleeBullet.battleLocalId;
const collisionOffenderIndex = self.collisionPlayerIndexPrefix + meleeBullet.offenderJoinIndex;
const offenderCollider = collisionSysMap.get(collisionOffenderIndex);
const offender = currRenderFrame.players[meleeBullet.offenderPlayerId];
let xfac = 1; // By now, straight Punch offset doesn't respect "y-axis"
if (0 > offender.dirX) {
xfac = -1;
}
const [offenderWx, offenderWy] = self.virtualGridToWorldPos(offender.virtualGridX, offender.virtualGridY);
const bulletWx = offenderWx + xfac * meleeBullet.hitboxOffset;
const bulletWy = offenderWy + 0.5 * meleeBullet.hitboxSize.y;
const [bulletCx, bulletCy] = self.worldToPolygonColliderAnchorPos(bulletWx, bulletWy, meleeBullet.hitboxSize.x * 0.5, meleeBullet.hitboxSize.y * 0.5),
pts = [[0, 0], [meleeBullet.hitboxSize.x, 0], [meleeBullet.hitboxSize.x, meleeBullet.hitboxSize.y], [0, meleeBullet.hitboxSize.y]];
const newBulletCollider = collisionSys.createPolygon(bulletCx, bulletCy, pts);
newBulletCollider.data = meleeBullet;
collisionSysMap.set(collisionBulletIndex, newBulletCollider);
bulletColliders.set(collisionBulletIndex, newBulletCollider);
// console.log(`A meleeBullet is added to collisionSys at currRenderFrame.id=${currRenderFrame.id} as start-up frames ended and active frame is not yet ended: ${JSON.stringify(meleeBullet)}`);
}
}
collisionSys.update();
const result1 = collisionSys.createResult(); // Can I reuse a "self.collisionSysResult" object throughout the whole battle?
bulletColliders.forEach((bulletCollider, collisionBulletIndex) => {
const potentials = bulletCollider.potentials();
const offender = currRenderFrame.players[bulletCollider.data.offenderPlayerId];
let shouldRemove = false;
for (const potential of potentials) {
if (null != potential.data && potential.data.joinIndex == bulletCollider.data.offenderJoinIndex) continue;
if (!bulletCollider.collides(potential, result1)) continue;
if (null != potential.data && null !== potential.data.joinIndex) {
const joinIndex = potential.data.joinIndex;
let xfac = 1;
if (0 > offender.dirX) {
xfac = -1;
}
bulletPushbacks[joinIndex - 1][0] += xfac * bulletCollider.data.pushback; // Only for straight punch, there's no y-pushback
bulletPushbacks[joinIndex - 1][1] += 0;
const thatAckedPlayerInCurFrame = currRenderFrame.players[potential.data.id];
const thatAckedPlayerInNextFrame = nextRenderFramePlayers[potential.data.id];
thatAckedPlayerInNextFrame.characterState = window.ATK_CHARACTER_STATE.Atked1[0];
if (thatAckedPlayerInCurFrame.inAir) {
thatAckedPlayerInNextFrame.characterState = window.toInAirConjugate(thatAckedPlayerInNextFrame.characterState);
}
const oldFramesToRecover = thatAckedPlayerInNextFrame.framesToRecover;
thatAckedPlayerInNextFrame.framesToRecover = (oldFramesToRecover > bulletCollider.data.hitStunFrames ? oldFramesToRecover : bulletCollider.data.hitStunFrames); // In case the hit player is already stun, we extend it
}
shouldRemove = true;
}
if (shouldRemove) {
removedBulletsAtCurrFrame.add(collisionBulletIndex);
}
});
// [WARNING] Remove bullets from collisionSys ANYWAY for the convenience of rollback
for (let k in currRenderFrame.meleeBullets) {
const meleeBullet = currRenderFrame.meleeBullets[k];
const collisionBulletIndex = self.collisionBulletIndexPrefix + meleeBullet.battleLocalId;
if (collisionSysMap.has(collisionBulletIndex)) {
const bulletCollider = collisionSysMap.get(collisionBulletIndex);
bulletCollider.remove();
collisionSysMap.delete(collisionBulletIndex);
}
if (removedBulletsAtCurrFrame.has(collisionBulletIndex)) continue;
nextRenderFrameMeleeBullets.push(meleeBullet);
}
// Process player inputs
if (null != delayedInputFrame) {
const delayedInputFrameForPrevRenderFrame = self.getCachedInputFrameDownsyncWithPrediction(self._convertToInputFrameId(currRenderFrame.id - 1, self.inputDelayFrames));
const inputList = delayedInputFrame.inputList;
for (let j in self.playerRichInfoArr) {
const joinIndex = parseInt(j) + 1;
effPushbacks[joinIndex - 1] = [0.0, 0.0];
const playerRichInfo = self.playerRichInfoArr[j];
const playerId = playerRichInfo.id;
const collisionPlayerIndex = self.collisionPlayerIndexPrefix + joinIndex;
const playerCollider = collisionSysMap.get(collisionPlayerIndex);
const currPlayerDownsync = currRenderFrame.players[playerId];
const thatPlayerInNextFrame = nextRenderFramePlayers[playerId];
if (0 < thatPlayerInNextFrame.framesToRecover) {
// No need to process inputs for this player, but there might be bullet pushbacks on this player
playerCollider.x += bulletPushbacks[joinIndex - 1][0];
playerCollider.y += bulletPushbacks[joinIndex - 1][1];
if (0 != bulletPushbacks[joinIndex - 1][0] || 0 != bulletPushbacks[joinIndex - 1][1]) {
console.log(`playerId=${playerId}, joinIndex=${joinIndex} is pushbacked back by ${bulletPushbacks[joinIndex - 1]} by bullet impacts, now its framesToRecover is ${thatPlayerInNextFrame.framesToRecover}`);
}
continue;
}
const decodedInput = self.ctrl.decodeInput(inputList[joinIndex - 1]);
const prevDecodedInput = (null == delayedInputFrameForPrevRenderFrame ? null : self.ctrl.decodeInput(delayedInputFrameForPrevRenderFrame.inputList[joinIndex - 1]));
const prevBtnALevel = (null == prevDecodedInput ? 0 : prevDecodedInput.btnALevel);
const prevBtnBLevel = (null == prevDecodedInput ? 0 : prevDecodedInput.btnBLevel);
/*
[WARNING] Player input alone WOULD NOT take "characterState" into any "ATK_CHARACTER_STATE_IN_AIR_SET", only after the calculation of "effPushbacks" do we know exactly whether or not a player is "inAir", the finalize the transition of "thatPlayerInNextFrame.characterState".
*/
if (1 == decodedInput.btnBLevel && 0 == prevBtnBLevel) {
const characStateAlreadyInAir = window.ATK_CHARACTER_STATE_IN_AIR_SET.has(thatPlayerInNextFrame.characterState);
const characStateIsInterruptWaivable = window.ATK_CHARACTER_STATE_INTERRUPT_WAIVE_SET.has(thatPlayerInNextFrame.characterState);
if (
!characStateAlreadyInAir
&&
characStateIsInterruptWaivable
) {
thatPlayerInNextFrame.velY = self.jumpingInitVelY;
jumpTriggered[joinIndex - 1] = true;
console.log(`playerId=${playerId}, joinIndex=${joinIndex} triggered a rising-edge of btnB at renderFrame.id=${currRenderFrame.id}, delayedInputFrame.id=${delayedInputFrame.inputFrameId}, nextVelY=${thatPlayerInNextFrame.velY}, characStateAlreadyInAir=${characStateAlreadyInAir}, characStateIsInterruptWaivable=${characStateIsInterruptWaivable}`);
}
}
if (1 == decodedInput.btnALevel && 0 == prevBtnALevel) {
// console.log(`playerId=${playerId} triggered a rising-edge of btnA at renderFrame.id=${currRenderFrame.id}, delayedInputFrame.id=${delayedInputFrame.inputFrameId}`);
if (self.bulletTriggerEnabled) {
const punchSkillId = 1;
const punch = window.pb.protos.MeleeBullet.create(self.meleeSkillConfig[punchSkillId]);
thatPlayerInNextFrame.framesToRecover = punch.recoveryFrames;
punch.battleLocalId = self.bulletBattleLocalIdCounter++;
punch.offenderJoinIndex = joinIndex;
punch.offenderPlayerId = playerId;
punch.originatedRenderFrameId = currRenderFrame.id;
nextRenderFrameMeleeBullets.push(punch);
// console.log(`A rising-edge of meleeBullet is created at renderFrame.id=${currRenderFrame.id}, delayedInputFrame.id=${delayedInputFrame.inputFrameId}: ${self._stringifyRecentInputCache(true)}`);
// console.log(`A rising-edge of meleeBullet is created at renderFrame.id=${currRenderFrame.id}, delayedInputFrame.id=${delayedInputFrame.inputFrameId}`);
thatPlayerInNextFrame.characterState = window.ATK_CHARACTER_STATE.Atk1[0];
if (false == currPlayerDownsync.inAir) {
thatPlayerInNextFrame.velX = 0; // prohibits simultaneous movement with Atk1 on the ground
}
}
} else if (0 == decodedInput.btnALevel && 1 == prevBtnALevel) {
// console.log(`playerId=${playerId} triggered a falling-edge of btnA at renderFrame.id=${currRenderFrame.id}, delayedInputFrame.id=${delayedInputFrame.inputFrameId}`);
} else {
// No bullet trigger, process joystick movement inputs (except for jumping).
if (0 != decodedInput.dx || 0 != decodedInput.dy) {
// Update directions and thus would eventually update moving animation accordingly
thatPlayerInNextFrame.dirX = decodedInput.dx;
thatPlayerInNextFrame.dirY = decodedInput.dy;
thatPlayerInNextFrame.velX = decodedInput.dx * currPlayerDownsync.speed;
thatPlayerInNextFrame.characterState = window.ATK_CHARACTER_STATE.Walking[0];
} else {
thatPlayerInNextFrame.characterState = window.ATK_CHARACTER_STATE.Idle1[0];
thatPlayerInNextFrame.velX = 0;
}
}
if (currPlayerDownsync.inAir) {
thatPlayerInNextFrame.characterState = window.toInAirConjugate(thatPlayerInNextFrame.characterState);
}
}
}
collisionSys.update(); // by now all "bulletCollider"s are removed
const result2 = collisionSys.createResult(); // Can I reuse a "self.collisionSysResult" object throughout the whole battle?
for (let j in self.playerRichInfoArr) {
const joinIndex = parseInt(j) + 1;
const playerId = self.playerRichInfoArr[j].id;
const collisionPlayerIndex = self.collisionPlayerIndexPrefix + joinIndex;
const playerCollider = collisionSysMap.get(collisionPlayerIndex);
const potentials = playerCollider.potentials();
const currPlayerDownsync = currRenderFrame.players[playerId];
const thatPlayerInNextFrame = nextRenderFramePlayers[playerId];
let fallStopping = false;
let [snappedIntoPlatformEx, snappedIntoPlatformEy] = [null, null];
for (const potential of potentials) {
// Test if the player collides with the wall
if (!playerCollider.collides(potential, result2)) continue;
// Push the player out of the wall
let [pushbackX, pushbackY] = [result2.overlap * result2.overlap_x, result2.overlap * result2.overlap_y];
if (null == potential.data) {
// "null == potential.data" implies a barrier
const normAlignmentWithGravity = (result2.overlap_x * 0 + result2.overlap_y * (-1.0));
const flatEnough = (self.snapIntoPlatformThreshold < normAlignmentWithGravity); // prevents false snapping on the lateral sides
const remainsNotInAir = (!currPlayerDownsync.inAir && flatEnough);
const localFallStopping = (currPlayerDownsync.inAir && flatEnough);
if (remainsNotInAir || localFallStopping) {
fallStopping |= localFallStopping;
[pushbackX, pushbackY] = [(result2.overlap - self.snapIntoPlatformOverlap) * result2.overlap_x, (result2.overlap - self.snapIntoPlatformOverlap) * result2.overlap_y]
// [overlay_x, overlap_y] is the unit vector that points into the platform; FIXME: Should only assign to [snappedIntoPlatformEx, snappedIntoPlatformEy] at most once!
snappedIntoPlatformEx = -result2.overlap_y;
snappedIntoPlatformEy = result2.overlap_x;
if (snappedIntoPlatformEx * currPlayerDownsync.dirX + snappedIntoPlatformEy * currPlayerDownsync.dirY) {
[snappedIntoPlatformEx, snappedIntoPlatformEy] = [-snappedIntoPlatformEx, -snappedIntoPlatformEy];
}
}
}
// What if we're on the edge of 2 barriers? Would adding up make an unexpected bounce?
effPushbacks[joinIndex - 1][0] += pushbackX;
effPushbacks[joinIndex - 1][1] += pushbackY;
}
if (false == jumpTriggered[joinIndex - 1] && null != snappedIntoPlatformEx && null != snappedIntoPlatformEy) {
thatPlayerInNextFrame.inAir = false;
if (fallStopping) {
thatPlayerInNextFrame.velY = 0;
thatPlayerInNextFrame.velX = 0;
thatPlayerInNextFrame.characterState = window.ATK_CHARACTER_STATE.Idle1[0];
thatPlayerInNextFrame.framesToRecover = 0;
}
const dotProd = thatPlayerInNextFrame.velX * snappedIntoPlatformEx + thatPlayerInNextFrame.velY * snappedIntoPlatformEy;
[thatPlayerInNextFrame.velX, thatPlayerInNextFrame.velY] = [dotProd * snappedIntoPlatformEx, dotProd * snappedIntoPlatformEy];
}
}
// Get players out of stuck barriers if there's any
for (let j in self.playerRichInfoArr) {
const joinIndex = parseInt(j) + 1;
const playerId = self.playerRichInfoArr[j].id;
const collisionPlayerIndex = self.collisionPlayerIndexPrefix + joinIndex;
const playerCollider = collisionSysMap.get(collisionPlayerIndex);
const thatPlayerInNextFrame = nextRenderFramePlayers[playerId];
[thatPlayerInNextFrame.virtualGridX, thatPlayerInNextFrame.virtualGridY] = self.polygonColliderAnchorToVirtualGridPos(playerCollider.x - effPushbacks[joinIndex - 1][0], playerCollider.y - effPushbacks[joinIndex - 1][1], self.playerRichInfoArr[j].colliderRadius, self.playerRichInfoArr[j].colliderRadius);
}
return window.pb.protos.RoomDownsyncFrame.create({
id: currRenderFrame.id + 1,
players: nextRenderFramePlayers,
meleeBullets: nextRenderFrameMeleeBullets,
});
},
applyRoomDownsyncFrameDynamics(rdf, prevRdf) {
const self = this;
OnlineMap.prototype.applyRoomDownsyncFrameDynamics.call(self, rdf, prevRdf);
if (self.showCriticalCoordinateLabels) {
let g = self.g;
g.clear();
for (let k in self.collisionSys._bvh._bodies) {
const body = self.collisionSys._bvh._bodies[k];
if (!body._polygon) continue;
if (null != body.data && null != body.data.joinIndex) {
// character
if (1 == body.data.joinIndex) {
g.strokeColor = cc.Color.BLUE;
} else {
g.strokeColor = cc.Color.RED;
}
} else {
// barrier
g.strokeColor = cc.Color.WHITE;
}
g.moveTo(body.x, body.y);
const cnt = body._coords.length;
for (let j = 0; j < cnt; j += 2) {
const x = body._coords[j],
y = body._coords[j + 1];
g.lineTo(x, y);
}
g.lineTo(body.x, body.y);
g.stroke();
}
// For convenience of recovery upon reconnection, active bullets are always created & immediately removed from "collisionSys" within "applyInputFrameDownsyncDynamicsOnSingleRenderFrame"
for (let k in rdf.meleeBullets) {
const meleeBullet = rdf.meleeBullets[k];
if (
meleeBullet.originatedRenderFrameId + meleeBullet.startupFrames <= rdf.id
&&
meleeBullet.originatedRenderFrameId + meleeBullet.startupFrames + meleeBullet.activeFrames > rdf.id
) {
const offender = rdf.players[meleeBullet.offenderPlayerId];
if (1 == offender.joinIndex) {
g.strokeColor = cc.Color.BLUE;
} else {
g.strokeColor = cc.Color.RED;
}
let xfac = 1; // By now, straight Punch offset doesn't respect "y-axis"
if (0 > offender.dirX) {
xfac = -1;
}
const [offenderWx, offenderWy] = self.virtualGridToWorldPos(offender.virtualGridX, offender.virtualGridY);
const bulletWx = offenderWx + xfac * meleeBullet.hitboxOffset;
const bulletWy = offenderWy + 0.5 * meleeBullet.hitboxSize.y;
const [bulletCx, bulletCy] = self.worldToPolygonColliderAnchorPos(bulletWx, bulletWy, meleeBullet.hitboxSize.x * 0.5, meleeBullet.hitboxSize.y * 0.5),
pts = [[0, 0], [meleeBullet.hitboxSize.x, 0], [meleeBullet.hitboxSize.x, meleeBullet.hitboxSize.y], [0, meleeBullet.hitboxSize.y]];
g.moveTo(bulletCx, bulletCy);
for (let j = 0; j < pts.length; j += 1) {
g.lineTo(pts[j][0] + bulletCx, pts[j][1] + bulletCy);
}
g.lineTo(bulletCx, bulletCy);
g.stroke();
}
}
}
},