ball stage tilt

src/game.ts

@@ -372,6 +372,7 @@ export class Game {
   };
   public simTick: number;
   public netplayRttMs: number | null;
+  public suppressVisualEffects: boolean;
   public inputFeed: (QuantizedStick | QuantizedInput)[] | null;
   public inputFeedIndex: number;
   public inputRecord: QuantizedStick[] | null;
@@ -495,6 +496,7 @@ export class Game {
     };
     this.simTick = 0;
     this.netplayRttMs = null;
+    this.suppressVisualEffects = false;
     this.inputFeed = null;
     this.inputFeedIndex = 0;
     this.inputRecord = null;
@@ -609,11 +611,23 @@ export class Game {
       },
       advanceFrame: (inputs) => {
         if (!perf.enabled) {
-          this.advanceOneFrame(inputs);
+          const prev = this.suppressVisualEffects;
+          this.suppressVisualEffects = true;
+          try {
+            this.advanceOneFrame(inputs);
+          } finally {
+            this.suppressVisualEffects = prev;
+          }
           return;
         }
         const t0 = nowMs();
-        this.advanceOneFrame(inputs);
+        const prev = this.suppressVisualEffects;
+        this.suppressVisualEffects = true;
+        try {
+          this.advanceOneFrame(inputs);
+        } finally {
+          this.suppressVisualEffects = prev;
+        }
         const dt = nowMs() - t0;
         perf.lastAdvanceMs = dt;
         perf.advanceMs += dt;
@@ -2746,6 +2760,7 @@ export class Game {
           smb2LoadInFrames,
           stageBall,
           stageCamera,
+          !this.suppressVisualEffects,
         );
         if (localPlayer.goalTimerFrames > 0) {
           localPlayer.goalTimerFrames -= 1;
@@ -2821,7 +2836,7 @@ export class Game {
             if (ball.state !== BALL_STATES.PLAY && ball.state !== BALL_STATES.GOAL_MAIN) {
               continue;
             }
-            stepBall(ball, this.stageRuntime, player.world);
+            stepBall(ball, this.stageRuntime, player.world, !this.suppressVisualEffects);
             if (ball.wormholeTransform) {
               player.camera.applyWormholeTransform(ball.wormholeTransform);
               ball.wormholeTransform = null;

src/noclip/Render.ts

@@ -36,6 +36,7 @@ export type RenderContext = {
   };
   opaqueInstList: GfxRenderInstList;
   translucentInstList: GfxRenderInstList;
+  viewFromWorld?: mat4;
 };
 
 export type BallRenderState = {

src/noclip/SuperMonkeyBall/World.ts

@@ -634,7 +634,8 @@ class BallInst {
         rp.sort = RenderSort.Translucent;
         rp.lighting = state.lighting;
         mat4.fromRotationTranslationScale(this.modelFromBall, this.rotation, this.pos, this.scale);
-        mat4.mul(rp.viewFromModel, ctx.viewerInput.camera.viewMatrix, this.modelFromBall);
+        const viewFromWorld = ctx.viewFromWorld ?? ctx.viewerInput.camera.viewMatrix;
+        mat4.mul(rp.viewFromModel, viewFromWorld, this.modelFromBall);
 
         for (let i = 0; i < this.models.length; i++) {
             rp.depthOffset = this.modelDepthOffsets[i] ?? 0;
@@ -1393,8 +1394,9 @@ export class World {
             this.fgObjects[i].prepareToRenderWithViewMatrix(this.worldState, stageCtx, viewFromWorldTilted);
         }
         this.background.prepareToRender(this.worldState, bgCtx);
+        const ballCtx = ctx.skipStageTilt ? stageCtx : { ...stageCtx, viewFromWorld: viewFromWorldTilted };
         for (let i = 0; i < this.balls.length; i++) {
-            this.balls[i].prepareToRender(this.worldState, stageCtx);
+            this.balls[i].prepareToRender(this.worldState, ballCtx);
         }
     }
 

src/physics.ts

@@ -730,7 +730,7 @@ function handleBallRotationalKinematics(ball, physBall, animGroups, stageRuntime
   }
 }
 
-export function stepBall(ball, stageRuntime, world) {
+export function stepBall(ball, stageRuntime, world, allowEffects = true) {
   const stage = stageRuntime.stage;
   const animGroups = stageRuntime.animGroups;
   if (ball.state === BALL_STATES.GOAL_MAIN) {
@@ -823,7 +823,7 @@ export function stepBall(ball, stageRuntime, world) {
     }
   }
 
-  if (stageRuntime.effects) {
+  if (allowEffects && stageRuntime.effects) {
     const onGround = (physBall.flags & COLI_FLAGS.OCCURRED) !== 0 && physBall.hardestColiPlane.normal.y > 0;
     const rng = stageRuntime.visualRng;
     spawnMovementSparks(stageRuntime.effects, ball, onGround, rng);

src/stage.ts

@@ -1524,7 +1524,16 @@ export class StageRuntime {
     }
   }
 
-  advance(frameDelta, paused, world, animTimerOverride = null, smb2LoadInFrames = null, ball = null, camera = null) {
+  advance(
+    frameDelta,
+    paused,
+    world,
+    animTimerOverride = null,
+    smb2LoadInFrames = null,
+    ball = null,
+    camera = null,
+    includeVisuals = true,
+  ) {
     if (paused) {
       return;
     }
@@ -1538,7 +1547,7 @@ export class StageRuntime {
     }
     this.updateAnimGroups(this.timerFrames / 60, frameDelta, smb2LoadInFrames);
     if (world) {
-      this.updateObjects(world, ball, camera);
+      this.updateObjects(world, ball, camera, includeVisuals);
     }
   }
 
@@ -1945,7 +1954,7 @@ export class StageRuntime {
     }
   }
 
-  updateObjects(world, ball = null, camera = null) {
+  updateObjects(world, ball = null, camera = null, includeVisuals = true) {
     const animGroups = this.animGroups;
     const gravity = world.gravity ?? { x: 0, y: -1, z: 0 };
     const stack = this.matrixStack;
@@ -1986,8 +1995,10 @@ export class StageRuntime {
     for (const bag of this.goalBags) {
       updateGoalBag(bag, animGroups, gravity, this.goalHoldOpen, stack, this.simRng);
     }
-    updateConfetti(this, gravity);
-    updateBallEffects(this.effects, gravity, this, this.visualRng);
+    if (includeVisuals) {
+      updateConfetti(this, gravity);
+      updateBallEffects(this.effects, gravity, this, this.visualRng);
+    }
     for (let i = 0; i < animGroups.length; i += 1) {
       const bumperStates = this.bumpers[i];
       for (const bumper of bumperStates) {