{
  "xzbt": "0.1",
  "meta": {
    "id": "exhibit-e",
    "name": "Exhibit E — Long Passage",
    "version": "0.1.0",
    "description": "A forty-minute procedural passage: approach, repeated signals, branching disturbance, and recovery."
  },
  "runtime": {
    "seed": 42
  },
  "parameters": {
    "activity": {
      "type": "number",
      "default": 0.35,
      "min": 0,
      "max": 1,
      "label": "Activity"
    }
  },
  "state": {
    "mode": {
      "type": "string",
      "initial": "normal"
    },
    "beats": {
      "type": "integer",
      "initial": 0
    },
    "journeys": {
      "type": "integer",
      "initial": 0
    }
  },
  "audio": {
    "buses": {
      "ambient": {
        "gain": 0.5
      },
      "effects": {
        "gain": 0.5
      }
    }
  },
  "sounds": {
    "bed": {
      "name": "Distant hum",
      "bus": "ambient",
      "usage": [
        "automatic"
      ],
      "cadence": {
        "class": "ambient"
      },
      "recipe": {
        "mode": "continuous",
        "release": "1s",
        "nodes": {
          "tone": {
            "type": "oscillator",
            "frequency": 55
          },
          "trim": {
            "type": "gain",
            "gain": 0.04
          }
        },
        "routes": [
          {
            "from": "tone",
            "to": "trim"
          },
          {
            "from": "trim",
            "to": "output"
          }
        ]
      }
    },
    "drone": {
      "name": "Passing resonance",
      "bus": "ambient",
      "usage": [
        "scenario"
      ],
      "recipe": {
        "mode": "continuous",
        "release": "2s",
        "nodes": {
          "tone": {
            "type": "oscillator",
            "frequency": 165
          },
          "trim": {
            "type": "gain",
            "gain": 0.035
          }
        },
        "routes": [
          {
            "from": "tone",
            "to": "trim"
          },
          {
            "from": "trim",
            "to": "output"
          }
        ]
      }
    },
    "beat": {
      "name": "Soft impulse",
      "bus": "effects",
      "usage": [
        "automatic",
        "scenario",
        "manual"
      ],
      "cadence": {
        "class": "routine",
        "overlap": false,
        "cooldown": "3s"
      },
      "recipe": {
        "mode": "oneshot",
        "release": "50ms",
        "nodes": {
          "hit": {
            "type": "impulse",
            "duration": "8ms",
            "amplitude": 0.06
          }
        },
        "routes": [
          {
            "from": "hit",
            "to": "output"
          }
        ]
      }
    }
  },
  "cadence": {
    "intensity": {
      "ref": "parameters.activity"
    },
    "minGap": "1500ms"
  },
  "bindings": [
    {
      "source": "parameters.activity",
      "target": "visuals.camera.zoom",
      "scale": 0.2,
      "offset": 1
    }
  ],
  "visuals": {
    "scene": {
      "coordinateSpace": "virtual",
      "width": 960,
      "height": 540,
      "background": "#101d25"
    },
    "systems": {
      "horizon": {
        "type": "graphic",
        "content": {
          "ring": {
            "type": "ring",
            "radius": 150,
            "innerRadius": 148,
            "position": {
              "x": 480,
              "y": 270
            },
            "style": {
              "fill": "#80beb5"
            }
          },
          "line": {
            "type": "line",
            "position": {
              "x": 240,
              "y": 270
            },
            "to": {
              "x": 480,
              "y": 0
            },
            "style": {
              "stroke": "#dfc18d",
              "strokeWidth": 2
            }
          }
        }
      },
      "signal": {
        "type": "graphic",
        "lifecycle": "spawned",
        "spawn": {
          "lifetime": "4s",
          "release": "1s"
        },
        "content": {
          "ring": {
            "type": "ring",
            "radius": 165,
            "innerRadius": 160,
            "position": {
              "x": 480,
              "y": 270
            },
            "style": {
              "fill": "#efbe79"
            },
            "behaviors": [
              {
                "type": "rotate",
                "speed": 12
              }
            ]
          }
        }
      }
    }
  },
  "events": {
    "signal": {
      "actions": [
        {
          "type": "set",
          "target": "state.beats",
          "value": {
            "op": "add",
            "args": [
              {
                "ref": "state.beats"
              },
              1
            ]
          }
        },
        {
          "type": "sound",
          "sound": "beat"
        },
        {
          "type": "spawn",
          "target": "visuals.systems.signal"
        }
      ]
    },
    "recover": {
      "actions": [
        {
          "type": "set",
          "target": "state.mode",
          "value": "normal"
        }
      ]
    }
  },
  "scenarios": {
    "journey": {
      "name": "Long passage",
      "priority": 70,
      "group": "passage",
      "trigger": {
        "type": "random-interval",
        "min": "45m",
        "max": "60m"
      },
      "concurrency": {
        "mode": "exclusive",
        "scope": "group",
        "policy": "defer"
      },
      "duration": "40m",
      "cooldown": "5m",
      "onStart": [
        {
          "type": "set",
          "target": "state.journeys",
          "value": {
            "op": "add",
            "args": [
              {
                "ref": "state.journeys"
              },
              1
            ]
          }
        },
        {
          "type": "set",
          "target": "state.mode",
          "value": "approach"
        },
        {
          "type": "sound",
          "sound": "drone"
        },
        {
          "type": "override",
          "target": "parameters.activity",
          "value": 0.7,
          "scope": "scenario",
          "transition": {
            "in": "1s",
            "out": "2s",
            "easing": "ease-in-out"
          }
        }
      ],
      "timeline": [
        {
          "id": "arrival",
          "at": "1m",
          "actions": [
            {
              "type": "event",
              "event": "signal"
            }
          ]
        },
        {
          "after": "arrival",
          "delay": {
            "random": {
              "min": "20s",
              "max": "50s"
            }
          },
          "repeat": {
            "count": 12,
            "every": {
              "random": {
                "min": "1m",
                "max": "2m"
              }
            }
          },
          "actions": [
            {
              "type": "event",
              "event": "signal"
            }
          ]
        },
        {
          "at": "15m",
          "choose": [
            {
              "weight": 3,
              "actions": [
                {
                  "type": "set",
                  "target": "state.mode",
                  "value": "drift"
                },
                {
                  "type": "override",
                  "target": "parameters.activity",
                  "value": 0.5,
                  "scope": "duration",
                  "transition": {
                    "in": "1s",
                    "out": "2s",
                    "easing": "ease-in-out"
                  },
                  "duration": "5m"
                }
              ]
            },
            {
              "weight": 1,
              "actions": [
                {
                  "type": "set",
                  "target": "state.mode",
                  "value": "disturbance"
                },
                {
                  "type": "override",
                  "target": "parameters.activity",
                  "value": 0.95,
                  "scope": "duration",
                  "transition": {
                    "in": "1s",
                    "out": "2s",
                    "easing": "ease-in-out"
                  },
                  "duration": "5m"
                },
                {
                  "type": "event",
                  "event": "signal"
                }
              ]
            }
          ]
        },
        {
          "at": "30m",
          "actions": [
            {
              "type": "event",
              "event": "recover"
            }
          ]
        },
        {
          "at": "40m",
          "actions": [
            {
              "type": "set",
              "target": "state.mode",
              "value": "normal"
            }
          ]
        }
      ],
      "onComplete": [
        {
          "type": "set",
          "target": "state.mode",
          "value": "normal"
        }
      ],
      "onCancel": [
        {
          "type": "set",
          "target": "state.mode",
          "value": "normal"
        }
      ]
    }
  }
}