Callback: Object slope check - Revision history

Frosch: use new grf templates

2012-04-01T13:18:52Z

use new grf templates

← Older revision		Revision as of 13:18, 1 April 2012
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	This callback is called for each tile where the new object will be built.		This callback is called for each tile where the new object will be built.

	{{~~grf~~\|7}} For GRF version 7 and below the return values are the same as for [[Callbacks#Industry_location_permissibility_.2828.29\|callback 28]], but with bit 10 inverted for backwards compatibility. This means that success is 0 instead of 0x400 while custom GRF texts start at 0x400 instead of 0. Return value 1 stands for "Land sloped in wrong direction" instead of "Site unsuitable".		{{grfTill\|7}} For GRF version 7 and below the return values are the same as for [[Callbacks#Industry_location_permissibility_.2828.29\|callback 28]], but with bit 10 inverted for backwards compatibility. This means that success is 0 instead of 0x400 while custom GRF texts start at 0x400 instead of 0. Return value 1 stands for "Land sloped in wrong direction" instead of "Site unsuitable".
	Note that earlier version of OpenTTD before r22658 and TTDPatch only support 0 for success and 1 for error.		Note that earlier version of OpenTTD before r22658 and TTDPatch only support 0 for success and 1 for error.

	{{~~grf~~\|8}} For GRF version 8 and above the return values are the same as for [[Callbacks#Industry_location_permissibility_.2828.29\|callback 28]]. Return value 401 stands for "Land sloped in wrong direction" instead of "Site unsuitable".		{{grfFrom\|8}} For GRF version 8 and above the return values are the same as for [[Callbacks#Industry_location_permissibility_.2828.29\|callback 28]]. Return value 401 stands for "Land sloped in wrong direction" instead of "Site unsuitable".

	Since the object isn't built yet, only some variables are available. In OpenTTD these are: 41, 42, 44, 45, 46, 48, 60 - 62 and 64.		Since the object isn't built yet, only some variables are available. In OpenTTD these are: 41, 42, 44, 45, 46, 48, 60 - 62 and 64.

Frosch: grf version 8

2011-11-09T01:11:15Z

grf version 8

← Older revision		Revision as of 01:11, 9 November 2011
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	== Object slope check (157) ==		== Object slope check (157) ==

			This callback is called for each tile where the new object will be built.
⚫	~~This~~ ~~callback~~ is ~~called~~ ~~for~~ ~~each~~ ~~tile where~~ the ~~new~~ ~~object~~ ~~will~~ be ~~built.~~ ~~For~~ ~~OpenTTD since r22658 allowed return values are like~~ [[Callbacks#Industry_location_permissibility_.2828.29\|callback 28]], but with ~~the difference that the meaning of~~ bit 10 is inverted for backwards compatibility. This means that success is 0 instead of 0x400 while custom GRF texts start at 0x400 instead of 0. Return value 1 stands for "Land sloped in wrong direction" instead of "Site unsuitable"~~. Earlier version of OpenTTD and TTDPatch only support 0 for success and 1 for error~~.

		⚫	{{grf\|7}} For GRF version 7 and below the return values are the same as for [[Callbacks#Industry_location_permissibility_.2828.29\|callback 28]], but with bit 10 inverted for backwards compatibility. This means that success is 0 instead of 0x400 while custom GRF texts start at 0x400 instead of 0. Return value 1 stands for "Land sloped in wrong direction" instead of "Site unsuitable".
			Note that earlier version of OpenTTD before r22658 and TTDPatch only support 0 for success and 1 for error.

			{{grf\|8}} For GRF version 8 and above the return values are the same as for [[Callbacks#Industry_location_permissibility_.2828.29\|callback 28]]. Return value 401 stands for "Land sloped in wrong direction" instead of "Site unsuitable".

	Since the object isn't built yet, only some variables are available. In OpenTTD these are: 41, 42, 44, 45, 46, 48, 60 - 62 and 64.		Since the object isn't built yet, only some variables are available. In OpenTTD these are: 41, 42, 44, 45, 46, 48, 60 - 62 and 64.

Frosch: dots are more common for ranges here

2011-08-27T21:41:22Z

dots are more common for ranges here

← Older revision		Revision as of 21:41, 27 August 2011
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	!Bits !! Meaning		!Bits !! Meaning
	\|-		\|-
	\| 0 - 3 \|\| Relative X position of the tile within the object		\| 0..3 \|\| Relative X position of the tile within the object
	\|-		\|-
	\| 4 - 7 \|\| Relative Y position of the tile within the object		\| 4..7 \|\| Relative Y position of the tile within the object
	\|-		\|-
	\| 8 - 31 \|\| Reserved; must be masked		\| 8..31 \|\| Reserved; must be masked
	\|}		\|}
	* Variable 18:		* Variable 18:
Line 19:		Line 19:
	!Bits !! Meaning		!Bits !! Meaning
	\|-		\|-
	\| 0 - 4 \|\| Slope of the tile		\| 0..4 \|\| Slope of the tile
	\|-		\|-
	\| 5 - 31 \|\| Reserved; must be masked		\| 5..31 \|\| Reserved; must be masked
	\|}		\|}

Frosch: copy&paste error

2011-08-27T21:38:59Z

copy&paste error

← Older revision		Revision as of 21:38, 27 August 2011
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	== ~~Station~~ slope check (~~149~~) ==		== Object slope check (157) ==

	This callback is called for each tile where the new object will be built. For OpenTTD since r22658 allowed return values are like [[Callbacks#Industry_location_permissibility_.2828.29\|callback 28]], but with the difference that the meaning of bit 10 is inverted for backwards compatibility. This means that success is 0 instead of 0x400 while custom GRF texts start at 0x400 instead of 0. Return value 1 stands for "Land sloped in wrong direction" instead of "Site unsuitable". Earlier version of OpenTTD and TTDPatch only support 0 for success and 1 for error.		This callback is called for each tile where the new object will be built. For OpenTTD since r22658 allowed return values are like [[Callbacks#Industry_location_permissibility_.2828.29\|callback 28]], but with the difference that the meaning of bit 10 is inverted for backwards compatibility. This means that success is 0 instead of 0x400 while custom GRF texts start at 0x400 instead of 0. Return value 1 stands for "Land sloped in wrong direction" instead of "Site unsuitable". Earlier version of OpenTTD and TTDPatch only support 0 for success and 1 for error.

Frosch: created

2011-08-27T21:38:11Z

created

New page

== Station slope check (149) ==

This callback is called for each tile where the new object will be built. For OpenTTD since r22658 allowed return values are like [[Callbacks#Industry_location_permissibility_.2828.29|callback 28]], but with the difference that the meaning of bit 10 is inverted for backwards compatibility. This means that success is 0 instead of 0x400 while custom GRF texts start at 0x400 instead of 0. Return value 1 stands for "Land sloped in wrong direction" instead of "Site unsuitable". Earlier version of OpenTTD and TTDPatch only support 0 for success and 1 for error.

Since the object isn't built yet, only some variables are available. In OpenTTD these are: 41, 42, 44, 45, 46, 48, 60 - 62 and 64.
Additionally you get the following information:
* Variable 10:
{| |-
!Bits !! Meaning
|-
| 0 - 3 || Relative X position of the tile within the object
|-
| 4 - 7 || Relative Y position of the tile within the object
|-
| 8 - 31 || Reserved; must be masked
|}
* Variable 18:
{| |-
!Bits !! Meaning
|-
| 0 - 4 || Slope of the tile
|-
| 5 - 31 || Reserved; must be masked
|}

[[Category:Callbacks]]