starting to implement realistic Vehicle simulation

app/simulation/simulator_main.py

@@ -0,0 +1,46 @@
+# app/simulation/simulator_main.py
+from __future__ import annotations
+from typing import Dict, Any
+from .vehicle import Vehicle, Orchestrator
+from .modules.engine import EngineModule
+from .modules.gearbox import GearboxModule
+from .modules.abs import AbsModule
+from .modules.basic import BasicModule
+
+class VehicleSimulator:
+    def __init__(self):
+        self.v = Vehicle()
+        self.orch = Orchestrator(self.v)
+        # order matters: base → engine → gearbox → abs
+        self.orch.add(BasicModule())
+        self.orch.add(EngineModule())
+        self.orch.add(GearboxModule())
+        self.orch.add(AbsModule())
+
+    # control from GUI
+    def set_gear(self, g: int) -> None:
+        self.v.set("gear", max(0, min(10, int(g))))
+    def set_throttle(self, t: int) -> None:
+        self.v.set("throttle_pct", max(0, min(100, int(t))))
+
+    def update(self, dt: float) -> None:
+        self.orch.update(dt)
+
+    def snapshot(self) -> Dict[str, Any]:
+        return self.v.snapshot()
+
+    # config I/O (compat with old layout)
+    def load_config(self, cfg: Dict[str, Any]) -> None:
+        for k in ("engine","gearbox","vehicle"):
+            if k in cfg:
+                self.v.config.setdefault(k, {}).update(cfg[k])
+        if "dtc" in cfg:
+            self.v.dtc.update(cfg["dtc"])
+
+    def export_config(self) -> Dict[str, Any]:
+        return {
+            "engine": dict(self.v.config.get("engine", {})),
+            "gearbox": dict(self.v.config.get("gearbox", {})),
+            "vehicle": dict(self.v.config.get("vehicle", {})),
+            "dtc": dict(self.v.dtc),
+        }