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Add signal style flag to limit lookahead extra aspect

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Jonathan G Rennison
2022-06-19 12:46:56 +01:00
parent 22caac6529
commit 175c5d4d50
9 changed files with 57 additions and 9 deletions
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9
docs/newgrf-additions-nml.html
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@@ -471,6 +471,15 @@ item (FEAT_GLOBALVARS) {
Set whether reserve through is unconditionally enabled for the most recently defined style (defined using the define_style property).
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<tr><td>style_lookahead_extra_aspects</td><td>0 - 6</td>
<td>
Set the look-ahead extra aspects for the most recently defined style (defined using the define_style property).<br />
This property only makes a difference when the "limit train lookahead to signal aspect" game setting is enabled.<br />
This limits the signal aspect which the hypothetical train driver can "read" from the signal without affecting signal aspect propagation to other signals, or variable <span class="code">extra_callback_info2</span>.<br />
Example values could include: 1 for traditional banner repeater signals, or 0 for shunt signals.<br />
The value is clamped to be less than or equal to the value set in the <span class="code">extra_aspects</span> property.
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<tr><td>no_default_style</td><td>0 or 1</td>
<td>
When enabled, custom signal graphics from this GRF are only used for custom signal styles, not the default style

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docs/newgrf-additions.html
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@@ -445,6 +445,15 @@
The Action 0 Id field is not used, the value is ignored.
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<p>This is indicated by the feature name: <font face="monospace">action0_signals_style</font>, version 1</p>
<h4 id="signals_style_lookahead_extra_aspects">Set custom signal style train look-ahead extra aspects (mappable property: signals_style_lookahead_extra_aspects)</h4>
<p>This applies to the most recent custom signal style defined using the <a href="#signals_define_style">signals_define_style</a> property.<br />
This property only makes a difference when the "limit train lookahead to signal aspect" game setting is enabled.<br />
This limits the signal aspect which the hypothetical train driver can "read" from the signal without affecting signal aspect propagation to other signals, or variable 0x18.<br />
Example values could include: 1 for traditional banner repeater signals, or 0 for shunt signals.</p>
<p>The property length is 1 byte. The value is clamped to be less than or equal to the value set in the <a href="#signals_extra_aspects">signals_extra_aspects</a> property.<br />
The Action 0 Id field is not used, the value is ignored.
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<p>This is indicated by the feature name: <font face="monospace">action0_signals_style</font>, version 1</p>
<h4 id="signals_no_default_style">Set whether custom signal sprites should not be used for the default signal style (mappable property: signals_no_default_style)</h4>
<p>This applies to <a href="#a3signals_custom_signal_sprites">Action 2/3 Signals (Feature 0E) custom signal sprites</a> for this GRF.<br />
When enabled, this GRF is not used for the default signal style, it is only used for custom signal styles defined with <a href="#signals_define_style">signals_define_style</a>.</p>