Callback: Industry availability - Revision history

Frosch: use new grf templates

2012-04-01T13:25:02Z

use new grf templates

← Older revision		Revision as of 13:25, 1 April 2012
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	This callback is intended for limiting your type as a whole, so you can't access any industry-specific variables, just the global ones. A good example for the use of this callback is a nuclear power plant that isn't allowed to appear before 1970.		This callback is intended for limiting your type as a whole, so you can't access any industry-specific variables, just the global ones. A good example for the use of this callback is a nuclear power plant that isn't allowed to appear before 1970.

	{{~~grf~~\|7}} For GRF version 7 and below the callback should return zero to make your type available, or any nonzero value to disable it.		{{grfTill\|7}} For GRF version 7 and below the callback should return zero to make your type available, or any nonzero value to disable it.

	{{~~grf~~\|8}} For GRF version 8 and above the callback should return one of these values:		{{grfFrom\|8}} For GRF version 8 and above the callback should return one of these values:
	:{\| \|-		:{\| \|-
	\|0000 \|\| Disallow construction		\|0000 \|\| Disallow construction

Frosch: prop 17 as well

2011-11-09T00:06:35Z

prop 17 as well

← Older revision		Revision as of 00:06, 9 November 2011
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	\|0000 \|\| Disallow construction		\|0000 \|\| Disallow construction
	\|-		\|-
	\|0001..00FF\|\| Allow construction, and use the returned value as probability for appearance on the map. (Instead of using [[Action0/Industries#Probability_in_random_game_.2817.29.2C_Probability_during_gameplay_.2818.29\|property 18]].)		\|0001..00FF\|\| Allow construction, and use the returned value as probability for appearance on the map. (Instead of using [[Action0/Industries#Probability_in_random_game_.2817.29.2C_Probability_during_gameplay_.2818.29\|property 17 or 18]].)
	\|-		\|-
	\|0100\|\| Allow construction; use the appearance probability from [[Action0/Industries#Probability_in_random_game_.2817.29.2C_Probability_during_gameplay_.2818.29\|property 18]]		\|0100\|\| Allow construction; use the appearance probability from [[Action0/Industries#Probability_in_random_game_.2817.29.2C_Probability_during_gameplay_.2818.29\|property 17 resp. 18]].
	\|}		\|}

Frosch: grf version 8

2011-11-09T00:04:38Z

grf version 8

← Older revision		Revision as of 00:04, 9 November 2011
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	Called when TTDPatch needs to know if a given industry type is available.		Called when TTDPatch needs to know if a given industry type is available.

	~~Return zero to make your type available, or any nonzero value to disable it.~~ This callback is intended for limiting your type as a whole, so you can't access any industry-specific variables, just the global ones. A good example for the use of this callback is a nuclear power plant that isn't allowed to appear before 1970.		This callback is intended for limiting your type as a whole, so you can't access any industry-specific variables, just the global ones. A good example for the use of this callback is a nuclear power plant that isn't allowed to appear before 1970.

			{{grf\|7}} For GRF version 7 and below the callback should return zero to make your type available, or any nonzero value to disable it.

			{{grf\|8}} For GRF version 8 and above the callback should return one of these values:
			:{\| \|-
			\|0000 \|\| Disallow construction
			\|-
			\|0001..00FF\|\| Allow construction, and use the returned value as probability for appearance on the map. (Instead of using [[Action0/Industries#Probability_in_random_game_.2817.29.2C_Probability_during_gameplay_.2818.29\|property 18]].)
			\|-
			\|0100\|\| Allow construction; use the appearance probability from [[Action0/Industries#Probability_in_random_game_.2817.29.2C_Probability_during_gameplay_.2818.29\|property 18]]
			\|}

	During this callback, variable 18 (extra callback info 2) can contain the following values:		During this callback, variable 18 (extra callback info 2) can contain the following values:

Pm-bot: Create a separate page for each callback

2011-06-16T18:57:54Z

Create a separate page for each callback

New page

== Industry availability (22) ==

Called when TTDPatch needs to know if a given industry type is available.

Return zero to make your type available, or any nonzero value to disable it. This callback is intended for limiting your type as a whole, so you can't access any industry-specific variables, just the global ones. A good example for the use of this callback is a nuclear power plant that isn't allowed to appear before 1970.

During this callback, variable 18 (extra callback info 2) can contain the following values:

{| |-
!Variable 18!!Meaning
|-
|0||TTD is generating a map and needs to know if your type can appear.
|-
|1||TTD decided to build a new random industry during regular gameplay and needs to know if it can choose your type.
|-
|2||The user tries to build/prospect for your industry via the new industry window. TTD needs to know if the player is allowed to do this.
|}
[[Category:Callbacks]]

← Older revision		Revision as of 13:25, 1 April 2012
Line 5:		Line 5:
	This callback is intended for limiting your type as a whole, so you can't access any industry-specific variables, just the global ones. A good example for the use of this callback is a nuclear power plant that isn't allowed to appear before 1970.		This callback is intended for limiting your type as a whole, so you can't access any industry-specific variables, just the global ones. A good example for the use of this callback is a nuclear power plant that isn't allowed to appear before 1970.

	{{~~grf~~\|7}} For GRF version 7 and below the callback should return zero to make your type available, or any nonzero value to disable it.		{{grfTill\|7}} For GRF version 7 and below the callback should return zero to make your type available, or any nonzero value to disable it.

	{{~~grf~~\|8}} For GRF version 8 and above the callback should return one of these values:		{{grfFrom\|8}} For GRF version 8 and above the callback should return one of these values:
	:{\| \|-		:{\| \|-
	\|0000 \|\| Disallow construction		\|0000 \|\| Disallow construction