From 3fdbc002b63cd45ba026df4dde6cf6edd5a38507 Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Sat, 4 Apr 2026 15:52:36 +0200
Subject: [PATCH] Remove player collision logic from runtime-three module

---
 src/runtime-three/player-collision.ts | 149 --------------------------
 1 file changed, 149 deletions(-)
 delete mode 100644 src/runtime-three/player-collision.ts

diff --git a/src/runtime-three/player-collision.ts b/src/runtime-three/player-collision.ts
deleted file mode 100644
index d1f3604c..00000000
--- a/src/runtime-three/player-collision.ts
+++ /dev/null
@@ -1,149 +0,0 @@
-import type { Vec3 } from "../core/vector";
-
-import type { RuntimeBoxCollider } from "./runtime-scene-build";
-
-export interface FirstPersonPlayerShape {
-  radius: number;
-  height: number;
-  eyeHeight: number;
-}
-
-export interface ResolvedPlayerMotion {
-  feetPosition: Vec3;
-  grounded: boolean;
-  collidedAxes: {
-    x: boolean;
-    y: boolean;
-    z: boolean;
-  };
-}
-
-export const FIRST_PERSON_PLAYER_SHAPE: FirstPersonPlayerShape = {
-  radius: 0.3,
-  height: 1.8,
-  eyeHeight: 1.6
-};
-
-type Axis = "x" | "y" | "z";
-
-interface RuntimeAabb {
-  min: Vec3;
-  max: Vec3;
-}
-
-function createPlayerAabb(feetPosition: Vec3, shape: FirstPersonPlayerShape): RuntimeAabb {
-  return {
-    min: {
-      x: feetPosition.x - shape.radius,
-      y: feetPosition.y,
-      z: feetPosition.z - shape.radius
-    },
-    max: {
-      x: feetPosition.x + shape.radius,
-      y: feetPosition.y + shape.height,
-      z: feetPosition.z + shape.radius
-    }
-  };
-}
-
-function rangesOverlap(minA: number, maxA: number, minB: number, maxB: number): boolean {
-  return minA < maxB && maxA > minB;
-}
-
-function resolveAxis(
-  axis: Axis,
-  nextFeetPosition: Vec3,
-  delta: number,
-  shape: FirstPersonPlayerShape,
-  colliders: RuntimeBoxCollider[]
-): { collided: boolean; grounded: boolean } {
-  if (delta === 0) {
-    return {
-      collided: false,
-      grounded: false
-    };
-  }
-
-  nextFeetPosition[axis] += delta;
-
-  let collided = false;
-  let grounded = false;
-
-  for (const collider of colliders) {
-    const playerAabb = createPlayerAabb(nextFeetPosition, shape);
-    const overlapsOtherAxes =
-      axis === "x"
-        ? rangesOverlap(playerAabb.min.y, playerAabb.max.y, collider.min.y, collider.max.y) &&
-          rangesOverlap(playerAabb.min.z, playerAabb.max.z, collider.min.z, collider.max.z)
-        : axis === "y"
-          ? rangesOverlap(playerAabb.min.x, playerAabb.max.x, collider.min.x, collider.max.x) &&
-            rangesOverlap(playerAabb.min.z, playerAabb.max.z, collider.min.z, collider.max.z)
-          : rangesOverlap(playerAabb.min.x, playerAabb.max.x, collider.min.x, collider.max.x) &&
-            rangesOverlap(playerAabb.min.y, playerAabb.max.y, collider.min.y, collider.max.y);
-
-    if (!overlapsOtherAxes) {
-      continue;
-    }
-
-    switch (axis) {
-      case "x":
-        if (delta > 0 && playerAabb.max.x > collider.min.x && playerAabb.min.x < collider.min.x) {
-          nextFeetPosition.x = collider.min.x - shape.radius;
-          collided = true;
-        } else if (delta < 0 && playerAabb.min.x < collider.max.x && playerAabb.max.x > collider.max.x) {
-          nextFeetPosition.x = collider.max.x + shape.radius;
-          collided = true;
-        }
-        break;
-      case "y":
-        if (delta > 0 && playerAabb.max.y > collider.min.y && playerAabb.min.y < collider.min.y) {
-          nextFeetPosition.y = collider.min.y - shape.height;
-          collided = true;
-        } else if (delta < 0 && playerAabb.min.y < collider.max.y && playerAabb.max.y > collider.max.y) {
-          nextFeetPosition.y = collider.max.y;
-          collided = true;
-          grounded = true;
-        }
-        break;
-      case "z":
-        if (delta > 0 && playerAabb.max.z > collider.min.z && playerAabb.min.z < collider.min.z) {
-          nextFeetPosition.z = collider.min.z - shape.radius;
-          collided = true;
-        } else if (delta < 0 && playerAabb.min.z < collider.max.z && playerAabb.max.z > collider.max.z) {
-          nextFeetPosition.z = collider.max.z + shape.radius;
-          collided = true;
-        }
-        break;
-    }
-  }
-
-  return {
-    collided,
-    grounded
-  };
-}
-
-export function resolveFirstPersonMotion(
-  feetPosition: Vec3,
-  motion: Vec3,
-  shape: FirstPersonPlayerShape,
-  colliders: RuntimeBoxCollider[]
-): ResolvedPlayerMotion {
-  const nextFeetPosition = {
-    ...feetPosition
-  };
-
-  const xResolution = resolveAxis("x", nextFeetPosition, motion.x, shape, colliders);
-  const zResolution = resolveAxis("z", nextFeetPosition, motion.z, shape, colliders);
-  const yResolution = resolveAxis("y", nextFeetPosition, motion.y, shape, colliders);
-
-  return {
-    feetPosition: nextFeetPosition,
-    grounded: yResolution.grounded,
-    collidedAxes: {
-      x: xResolution.collided,
-      y: yResolution.collided,
-      z: zResolution.collided
-    }
-  };
-}