Class Crossing
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*Messages sent to and from Crossings objects are listed below: | *Messages sent to and from Crossings objects are listed below: | ||
| − | *Note that | + | *Note that more messages are also posted by the parent [[Class SceneryWithTrack|SceneryWithTrack]] class. |
<br> | <br> | ||
{{TableHeader|width=50%|margin=15px}} | {{TableHeader|width=50%|margin=15px}} | ||
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|[[Object Messages|Object]]||Leave||Crossing||Crossing | |[[Object Messages|Object]]||Leave||Crossing||Crossing | ||
|- | |- | ||
| − | | | + | |Crossing||StateChanged||Crossing||Crossing |
|} | |} | ||
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*Returns the crossing owner, if any. | *Returns the crossing owner, if any. | ||
*Owned crossings cannot have their state altered by any script except the owner, including the crossing itself. | *Owned crossings cannot have their state altered by any script except the owner, including the crossing itself. | ||
| − | *Introduced for [[Class InterlockingTower|Interlocking Towers]. | + | *Introduced for [[Class InterlockingTower|Interlocking Towers]]. |
<br> | <br> | ||
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*Updates the crossing 'owner', which is used to lock access to various functions. | *Updates the crossing 'owner', which is used to lock access to various functions. | ||
*Owned crossings cannot have their state altered by any script except the owner, including the crossing itself. | *Owned crossings cannot have their state altered by any script except the owner, including the crossing itself. | ||
| − | *Introduced for [[Class InterlockingTower|Interlocking Towers]. | + | *Introduced for [[Class InterlockingTower|Interlocking Towers]]. |
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SetCrossingState(null, Crossing.CROSSING_STATE_CLOSED); | SetCrossingState(null, Crossing.CROSSING_STATE_CLOSED); | ||
;Notes | ;Notes | ||
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*If you intend to alter the crossing state you should first disable automatic control (See SetCrossingAutomatic) | *If you intend to alter the crossing state you should first disable automatic control (See SetCrossingAutomatic) | ||
*The crossing state will be altered as requested even if the crossing is under automatic control, but native code may quickly change it back. | *The crossing state will be altered as requested even if the crossing is under automatic control, but native code may quickly change it back. | ||
Latest revision as of 15:02, 26 February 2024
- A script class to represent a level crossing or similar object.
- By default a crossing is automatically controlled by Trainz native code.
- The crossing will close when a train is within the trigger distance of the crossing (as specified by the asset).
- The crossing will reopen to road traffic when there are no trains within the trigger disance.
Contents |
[edit] Constants & Messages
[edit] Crossing States
- These values define the possible state of a crossing.
| public define int CROSSING_STATE_OPEN = 0 | Crossing is open to road traffic. |
| public define int CROSSING_STATE_CLOSING = 1 | Crossing is in the act of closing. |
| public define int CROSSING_STATE_CLOSED = 2 | Crossing is closed to road traffic. |
| public define int CROSSING_STATE_OPENING = 3 | Crossing is in the act of opening. |
[edit] Related Messages
- Messages sent to and from Crossings objects are listed below:
- Note that more messages are also posted by the parent SceneryWithTrack class.
| Major | Minor | Source | Destination |
| Object | Enter | Crossing | Crossing |
| Object | Leave | Crossing | Crossing |
| Crossing | StateChanged | Crossing | Crossing |
[edit] Methods
[edit] GetCrossingAutomatic
public native bool GetCrossingAutomatic(void)
- Parameters
- None
- Returned Value
- Whether the crossing operating in automatic mode.
- Syntax
bool bIsAutomaticMode = crossing.GetCrossingAutomatic();
- Notes
[edit] GetCrossingHasNearbyTrain
public native bool GetCrossingHasNearbyTrain(void)
- Parameters
- None
- Returned Value
- Whether any trains are within the trigger radius (default 200m, overridable by the asset).
- Syntax
bool bHasNearbyTrain = crossing.GetCrossingHasNearbyTrain();
- Notes
- This function will continue to operate when the crossing is in manual script mode.
- The default crossing trigger distance is 200 metres, but this can be overridden by the asset config.
- The crossing trigger distance cannot be overridden by script.
[edit] GetCrossingOwner
public native TrainzGameObject GetCrossingOwner(void)
- Parameters
- None
- Returned Value
- The crossing owner, or null.
- Syntax;
if (crossing.GetCrossingOwner()) return; // The crossing is owned, so we cannot alter state.
- Notes
- Returns the crossing owner, if any.
- Owned crossings cannot have their state altered by any script except the owner, including the crossing itself.
- Introduced for Interlocking Towers.
[edit] GetCrossingState
public native int GetCrossingState(void)
- Parameters
- None
- Returned Value
- One of the crossing state constants indicating the current condition of the crossing.
- Syntax
switch(GetCrossingState())
{
case CROSSING_STATE_OPEN:
// Crossing is open to road traffic.
break;
case CROSSING_STATE_CLOSING:
case CROSSING_STATE_CLOSED:
case CROSSING_STATE_OPENING:
// Crossing is NOT open to road traffic.
break;
}
- Notes
- A "Crossing","StateChanged" message will be posted to the crossing whenever this value changes.
[edit] SetCrossingAutomatic
public native void SetCrossingAutomatic(SecurityToken token, bool auto)
- Parameters
- token = A token for the crossing owner with rights "crossing-state", or null.
- auto = True to select automatic mode, false to disable automatic control.
- Returned Value
- None
- Syntax
SetCrossingAutomatic(null, false);
- Notes
- The token is unused if the crossing is unowned, and can be passed as null.
[edit] SetCrossingOwner
public native void SetCrossingOwner(SecurityToken token, TrainzGameObject owner)
- Parameters
- token - A token for the crossing owner (new and current, if applicable) with rights "crossing-owner".
- owner - New owner to set, may be null.
- Returned Value
- Whether the call succeeded, and the crossing owner was changed.
- Syntax;
string[] rights = new string[1]; rights[0] = "crossing-owner"; SecurityToken token = IssueSecurityToken(GetAsset().GetKUID(), rights);
crossing.SetCrossingOwner(token, me);
- Notes
- Updates the crossing 'owner', which is used to lock access to various functions.
- Owned crossings cannot have their state altered by any script except the owner, including the crossing itself.
- Introduced for Interlocking Towers.
[edit] SetCrossingState
public native void SetCrossingState(SecurityToken token, int state)
- Parameters
- token = A token for the crossing owner with rights "crossing-state", or null.
- state = One of the crossing state constants indicating which state to set.
- Returned Value
- None
- Syntax
SetCrossingState(null, Crossing.CROSSING_STATE_CLOSED);
- Notes
- If you intend to alter the crossing state you should first disable automatic control (See SetCrossingAutomatic)
- The crossing state will be altered as requested even if the crossing is under automatic control, but native code may quickly change it back.
- The token is unused if the crossing is unowned, and can be passed as null.
