From 34220818b08583e9431e5471805eb3519c58ad40 Mon Sep 17 00:00:00 2001
From: tekki mariani <tekki.mariani@googlemail.com>
Date: Fri, 20 Mar 2026 21:09:13 +0000
Subject: [PATCH] =?UTF-8?q?=E2=99=BB=EF=B8=8F=20revert=20zoom=20to=20cente?=
 =?UTF-8?q?r-only,=20keep=20middle-click=20pan?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/systems/CameraSystem.ts | 36 +-----------------------------------
 1 file changed, 1 insertion(+), 35 deletions(-)

diff --git a/src/systems/CameraSystem.ts b/src/systems/CameraSystem.ts
index c8ab1e6..a41b456 100644
--- a/src/systems/CameraSystem.ts
+++ b/src/systems/CameraSystem.ts
@@ -26,11 +26,6 @@ export class CameraSystem {
   private middlePanActive = false
   private lastPanX = 0
   private lastPanY = 0
-  private mouseScreenX = 0
-  private mouseScreenY = 0
-  private mouseWorldX = 0
-  private mouseWorldY = 0
-  private debugCross?: Phaser.GameObjects.Graphics
 
   constructor(scene: Phaser.Scene, adapter: LocalAdapter) {
     this.scene = scene
@@ -57,28 +52,10 @@ export class CameraSystem {
       d:     kb.addKey(Phaser.Input.Keyboard.KeyCodes.D),
     }
 
-    // Debug cross — redrawn every frame in world space, no transforms needed
-    this.debugCross = this.scene.add.graphics()
-    this.debugCross.setDepth(999)
-
-    // Track mouse world position on every move so we have a stable value for zoom
-    this.scene.input.on('pointermove', (ptr: Phaser.Input.Pointer) => {
-      this.mouseScreenX = ptr.x
-      this.mouseScreenY = ptr.y
-      this.mouseWorldX = cam.scrollX + ptr.x / cam.zoom
-      this.mouseWorldY = cam.scrollY + ptr.y / cam.zoom
-    })
-
-    // Scroll wheel zoom — zoom toward mouse pointer
+    // Scroll wheel zoom
     this.scene.input.on('wheel', (_ptr: Phaser.Input.Pointer, _objs: unknown, _dx: number, dy: number) => {
       const newZoom = Phaser.Math.Clamp(cam.zoom - Math.sign(dy) * ZOOM_STEP, MIN_ZOOM, MAX_ZOOM)
-      if (newZoom === cam.zoom) return
       cam.setZoom(newZoom)
-      cam.scrollX = this.mouseWorldX - this.mouseScreenX / newZoom
-      cam.scrollY = this.mouseWorldY - this.mouseScreenY / newZoom
-      const centerX = cam.scrollX + cam.width  / (2 * cam.zoom)
-      const centerY = cam.scrollY + cam.height / (2 * cam.zoom)
-      console.log(`[zoom] screen=(${this.mouseScreenX.toFixed(0)},${this.mouseScreenY.toFixed(0)}) world=(${this.mouseWorldX.toFixed(0)},${this.mouseWorldY.toFixed(0)}) center=(${centerX.toFixed(0)},${centerY.toFixed(0)}) zoom=${cam.zoom.toFixed(2)}`)
     })
 
     // Middle-click pan: start on button down
@@ -131,17 +108,6 @@ export class CameraSystem {
     cam.scrollX = Phaser.Math.Clamp(cam.scrollX + dx, 0, worldW - cam.width / cam.zoom)
     cam.scrollY = Phaser.Math.Clamp(cam.scrollY + dy, 0, worldH - cam.height / cam.zoom)
 
-    // Redraw debug cross every frame at viewport center in world space
-    if (this.debugCross) {
-      const cx  = cam.scrollX + cam.width  / (2 * cam.zoom)
-      const cy  = cam.scrollY + cam.height / (2 * cam.zoom)
-      const arm = 12 / cam.zoom   // 12 screen pixels at any zoom
-      this.debugCross.clear()
-      this.debugCross.lineStyle(2 / cam.zoom, 0xff0000, 1)
-      this.debugCross.lineBetween(cx - arm, cy, cx + arm, cy)
-      this.debugCross.lineBetween(cx, cy - arm, cx, cy + arm)
-    }
-
     // Periodically save camera center as "player position"
     this.saveTimer += delta
     if (this.saveTimer >= this.SAVE_TICK) {