Callback: Can wagon be attached - Revision history

Frosch: /* Can wagon be attached (1D) */

2025-05-13T14:08:28Z

Can wagon be attached (1D)

← Older revision		Revision as of 14:08, 13 May 2025
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	\|-		\|-
	\|402\|\|Disallow attaching with the standard message (incompatible rail types)		\|402\|\|Disallow attaching with the standard message (incompatible rail types)
			\|-
			\|40F\|\|{{ottdp\|15\|no}} Disallow attaching and display error message using text ID from register 0x100 (not limited to D0xx texts).
	\|}		\|}

Frosch: clarify Action 3 evaluation

2014-01-19T13:54:55Z

clarify Action 3 evaluation

← Older revision		Revision as of 13:54, 19 January 2014
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	{{ottdp\| \|2.5\|ttdprev=alpha 46}} Var. action 2 type 82 (engine) refers to the engine the wagon is being attached to, starting from version TTDPatch 2.0.1 alpha 46. This allows you to for example find out the length of the train it is being attached to. In earlier patch versions, it refers to the engine of the source consist (or the wagon if the wagon is not attached to anything else), which was not really helpful.		{{ottdp\| \|2.5\|ttdprev=alpha 46}} Var. action 2 type 82 (engine) refers to the engine the wagon is being attached to, starting from version TTDPatch 2.0.1 alpha 46. This allows you to for example find out the length of the train it is being attached to. In earlier patch versions, it refers to the engine of the source consist (or the wagon if the wagon is not attached to anything else), which was not really helpful.

			So, overall the callback is evaluated this way:
			* The Action 3 is used from the regular engine (livery overrides have no influence).
			* The cargotype to use in Action 3 is taken from the wagon.
			* VarAction2 types 81, 85, 89 refer to the wagon.
			* VarAction2 types 82, 85, 8A refer to the engine.

	{{grfTill\|7}} For GRF version 7 and below the valid return values are:		{{grfTill\|7}} For GRF version 7 and below the valid return values are:

Frosch: use new grf templates

2012-04-01T13:23:52Z

use new grf templates

← Older revision		Revision as of 13:23, 1 April 2012
Line 7:		Line 7:
	{{ottdp\| \|2.5\|ttdprev=alpha 46}} Var. action 2 type 82 (engine) refers to the engine the wagon is being attached to, starting from version TTDPatch 2.0.1 alpha 46. This allows you to for example find out the length of the train it is being attached to. In earlier patch versions, it refers to the engine of the source consist (or the wagon if the wagon is not attached to anything else), which was not really helpful.		{{ottdp\| \|2.5\|ttdprev=alpha 46}} Var. action 2 type 82 (engine) refers to the engine the wagon is being attached to, starting from version TTDPatch 2.0.1 alpha 46. This allows you to for example find out the length of the train it is being attached to. In earlier patch versions, it refers to the engine of the source consist (or the wagon if the wagon is not attached to anything else), which was not really helpful.

	{{~~grf~~\|7}} For GRF version 7 and below the valid return values are:		{{grfTill\|7}} For GRF version 7 and below the valid return values are:
	{\| \|-		{\| \|-
	!Return!!Meaning		!Return!!Meaning
Line 20:		Line 20:
	\|}		\|}

	{{~~grf~~\|8}} For GRF version 8 and above the valid return values are:		{{grfFrom\|8}} For GRF version 8 and above the valid return values are:
	{\| \|-		{\| \|-
	!Return!!Meaning		!Return!!Meaning

Frosch: grf version 8

2011-11-09T00:50:12Z

grf version 8

← Older revision		Revision as of 00:50, 9 November 2011
Line 7:		Line 7:
	{{ottdp\| \|2.5\|ttdprev=alpha 46}} Var. action 2 type 82 (engine) refers to the engine the wagon is being attached to, starting from version TTDPatch 2.0.1 alpha 46. This allows you to for example find out the length of the train it is being attached to. In earlier patch versions, it refers to the engine of the source consist (or the wagon if the wagon is not attached to anything else), which was not really helpful.		{{ottdp\| \|2.5\|ttdprev=alpha 46}} Var. action 2 type 82 (engine) refers to the engine the wagon is being attached to, starting from version TTDPatch 2.0.1 alpha 46. This allows you to for example find out the length of the train it is being attached to. In earlier patch versions, it refers to the engine of the source consist (or the wagon if the wagon is not attached to anything else), which was not really helpful.

			{{grf\|7}} For GRF version 7 and below the valid return values are:
	Return values:

	{\| \|-		{\| \|-
	!Return!!Meaning		!Return!!Meaning
	\|-		\|-
	\|xx\|\|Disallow attaching and use the D0xx text ID as second line of an error message,		\|00..FC\|\|Disallow attaching and use the D0xx (D000..D0FC) text ID as second line of an error message,
	\|-		\|-
	\|FD\|\|Disallow attaching with the standard message (incompatible rail types)		\|FD\|\|Disallow attaching with the standard message (incompatible rail types)
	\|-		\|-
		⚫	\|FE\|\|Allow attaching<ref name="ignorerailtype">This mean you would allow attaching for example a monorail wagon to a regular rail vehicle.</ref>
	\|FE\|\|Allow attaching
	\|-		\|-
	\|FF\|\|Allow attaching if the rail types match (default)		\|FF\|\|Allow attaching if the rail types match (default)
	\|}		\|}

			{{grf\|8}} For GRF version 8 and above the valid return values are:
⚫	It ~~you~~ ~~return~~ ~~FE,~~ you would allow attaching for example a monorail wagon to a regular rail vehicle~~, so if that's not what you intend, return FF~~.
			{\| \|-
			!Return!!Meaning
			\|-
			\|00..3FF\|\|Disallow attaching and use the D0xx (D000..D3FF) text ID as second line of an error message,
			\|-
			\|400\|\|Allow attaching if the rail types match (default)
			\|-
			\|401\|\|Allow attaching<ref name="ignorerailtype"/>
			\|-
			\|402\|\|Disallow attaching with the standard message (incompatible rail types)
			\|}

			<references/>

	[[Category:Callbacks]]		[[Category:Callbacks]]

Planetmaker: /* Can wagon be attached (1D) */ version info

2011-08-03T23:27:37Z

Can wagon be attached (1D): version info

← Older revision		Revision as of 23:27, 3 August 2011
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	You may use VarAction2s to check variables 40+x and 80+x. For var. action 2 type 81 (vehicle), they refer to variables of the wagon that is to be attached, not the engine it is being attached to, so you can check the wagon's properties like the cargo type to see whether it is appropriate for the given train engine.		You may use VarAction2s to check variables 40+x and 80+x. For var. action 2 type 81 (vehicle), they refer to variables of the wagon that is to be attached, not the engine it is being attached to, so you can check the wagon's properties like the cargo type to see whether it is appropriate for the given train engine.

	Var. action 2 type 82 (engine) refers to the engine the wagon is being attached to, starting from version TTDPatch 2.0.1 alpha 46. This allows you to for example find out the length of the train it is being attached to. In earlier patch versions, it refers to the engine of the source consist (or the wagon if the wagon is not attached to anything else), which was not really helpful.		{{ottdp\| \|2.5\|ttdprev=alpha 46}} Var. action 2 type 82 (engine) refers to the engine the wagon is being attached to, starting from version TTDPatch 2.0.1 alpha 46. This allows you to for example find out the length of the train it is being attached to. In earlier patch versions, it refers to the engine of the source consist (or the wagon if the wagon is not attached to anything else), which was not really helpful.

	Return values:		Return values:

Pm-bot: Bot: Automated text replacement (-variational action 2 +VarAction2)

2011-06-19T16:32:58Z

Bot: Automated text replacement (-variational action 2 +VarAction2)

← Older revision		Revision as of 16:32, 19 June 2011
Line 3:		Line 3:
	This callback is called for the train engine (i.e. from the engine's action 3) when attaching a new vehicle to the current train and determines whether it may in fact be attached to the train. The callback is always used when defined, no bit in the action 0 property needs to be set to activate it.		This callback is called for the train engine (i.e. from the engine's action 3) when attaching a new vehicle to the current train and determines whether it may in fact be attached to the train. The callback is always used when defined, no bit in the action 0 property needs to be set to activate it.

	You may use ~~variational action 2s~~ to check variables 40+x and 80+x. For var. action 2 type 81 (vehicle), they refer to variables of the wagon that is to be attached, not the engine it is being attached to, so you can check the wagon's properties like the cargo type to see whether it is appropriate for the given train engine.		You may use VarAction2s to check variables 40+x and 80+x. For var. action 2 type 81 (vehicle), they refer to variables of the wagon that is to be attached, not the engine it is being attached to, so you can check the wagon's properties like the cargo type to see whether it is appropriate for the given train engine.

	Var. action 2 type 82 (engine) refers to the engine the wagon is being attached to, starting from version TTDPatch 2.0.1 alpha 46. This allows you to for example find out the length of the train it is being attached to. In earlier patch versions, it refers to the engine of the source consist (or the wagon if the wagon is not attached to anything else), which was not really helpful.		Var. action 2 type 82 (engine) refers to the engine the wagon is being attached to, starting from version TTDPatch 2.0.1 alpha 46. This allows you to for example find out the length of the train it is being attached to. In earlier patch versions, it refers to the engine of the source consist (or the wagon if the wagon is not attached to anything else), which was not really helpful.

Pm-bot: Create a separate page for each callback

2011-06-16T18:57:50Z

Create a separate page for each callback

New page

== Can wagon be attached (1D) ==

This callback is called for the train engine (i.e. from the engine's action 3) when attaching a new vehicle to the current train and determines whether it may in fact be attached to the train. The callback is always used when defined, no bit in the action 0 property needs to be set to activate it.

You may use variational action 2s to check variables 40+x and 80+x. For var. action 2 type 81 (vehicle), they refer to variables of the wagon that is to be attached, not the engine it is being attached to, so you can check the wagon's properties like the cargo type to see whether it is appropriate for the given train engine.

Var. action 2 type 82 (engine) refers to the engine the wagon is being attached to, starting from version TTDPatch 2.0.1 alpha 46. This allows you to for example find out the length of the train it is being attached to. In earlier patch versions, it refers to the engine of the source consist (or the wagon if the wagon is not attached to anything else), which was not really helpful.

Return values:

{| |-
!Return!!Meaning
|-
|xx||Disallow attaching and use the D0xx text ID as second line of an error message,
|-
|FD||Disallow attaching with the standard message (incompatible rail types)
|-
|FE||Allow attaching
|-
|FF||Allow attaching if the rail types match (default)
|}

It you return FE, you would allow attaching for example a monorail wagon to a regular rail vehicle, so if that's not what you intend, return FF.
[[Category:Callbacks]]