Help for NML

[Telk]

Hello
I think NML is a very good tool to make NewGRF and thanks for developer.

In this time, I have a problem with applying something.
I want this:
1. Add a locomotive.
2. Add a default passenger wagon behind that.
3. Then passenger wagon's graphic changes according to locomotive.
(Is this called 'livery override'?)


NML Documents(http://newgrf-specs.tt-wiki.net/wiki/NM ... y_override) say

Code: Select all

livery_override (vehicleID) {
	callback_name: switch_name;
	callback_name2: return value;
	default: spritegroup_name;
}

I tried to make an engine ('KTX' in screenshot) and attached that codes just behind graphics block.
But it doesn't apply to game.

I know that I'm bothering you but please see my NML codes and what is the problem with my codes.


Here's Screenshots

liveryoverride.png

(96.23 KiB) Downloaded 3 times

(The above one is the result that I made. And the below one is what I intend.)

Code: Select all

grf {
	grfid : "TK\05\01";
	name : string(STR_GRF_NAME);
	desc : string(STR_GRF_DESC);
	version : 1;
	min_compatible_version : 1;
}

railtypetable {
	ELRL
}

template tmpl_vehicle_basic(x, y) {
	//xpos	ypos	xsize	ysize	xoff	yoff
	[x,	y,	 8,	22,	 -3,	-12]
	[x +  9,	y,	22,	16,	-14,	-10]
	[x + 32,	y,	32,	12,	-16,	 -6]
	[x + 65,	y,	22,	16,	 -6,	-10]
}

template tmpl_vehicle_4_views(line_num) {
	tmpl_vehicle_basic(1,	30 * line_num)
}

template tmpl_vehicle_8_views(line_num) {
	tmpl_vehicle_basic(1,	30 * line_num)
	tmpl_vehicle_basic(89,	30 * line_num)
}


spriteset(set_ktx_engine_f,		"./tk_KTX/gfx/rKTX.png") { tmpl_vehicle_8_views(0) }
spriteset(set_ktx_middle_r,		"./tk_KTX/gfx/rKTX.png") { tmpl_vehicle_8_views(2) }
spriteset(set_ktx_center,		"./tk_KTX/gfx/rKTX.png") { tmpl_vehicle_4_views(4) }
spriteset(set_ktx_center2,		"./tk_KTX/gfx/rKTX.png") { tmpl_vehicle_8_views(4) }
spriteset(set_ktx_middle_f,		"./tk_KTX/gfx/rKTX.png") { tmpl_vehicle_8_views(3) }
spriteset(set_ktx_engine_r,		"./tk_KTX/gfx/rKTX.png") { tmpl_vehicle_8_views(1) }

spriteset(set_ktx_purchase_f,		"./tk_KTX/gfx/rKTX.png") { [121, 0, 32, 12, -24, -4] }
spriteset(set_ktx_purchase_r,		"./tk_KTX/gfx/rKTX.png") { [33, 0, 32, 12, -24, -4] }
spriteset(set_ktx_invisible,		"./tk_KTX/gfx/rKTX.png") { [1, 180, 1, 1, 0, 0] }
spriteset(set_ktx_middle_purchase,	"./tk_KTX/gfx/rKTX.png") { [33, 120, 32, 12, -24, -4] }


// Sprites
switch(FEAT_TRAINS, SELF, sw_ktx_middle2, cargo_subtype) {
	set_ktx_center;
}
switch(FEAT_TRAINS, SELF, sw_ktx_middle1, position_in_consist_from_end) {
	0: set_ktx_engine_f;
	1: set_ktx_middle_f;
	sw_ktx_middle2;
}
switch(FEAT_TRAINS, SELF, sw_ktx_graphics, position_in_consist) {
	0: set_ktx_engine_f;
	1: set_ktx_middle_f;
	sw_ktx_middle1;
}

switch(FEAT_TRAINS, SELF, sw_ktx_can_attach_wagon, vehicle_type_id) {
	train_ktx: return CB_RESULT_ATTACH_ALLOW;
	return string(STR_KTX_ERROR_CANNOT_ATTACH_OTHER);
}

// Define a KTX train
item(FEAT_TRAINS, train_ktx) {
	property {
		name:				string(STR_KTX_NAME);
		climates_available:		ALL_CLIMATES & ~bitmask(CLIMATE_TOYLAND);

		introduction_date:		date(2000, 1, 1);
		model_life:			VEHICLE_NEVER_EXPIRES;
		vehicle_life:			30;
		reliability_decay:			1;
		refittable_cargo_classes:		bitmask(CC_PASSENGERS);
		non_refittable_cargo_classes:	bitmask();
		loading_speed:			20;
		cost_factor:			1;
		running_cost_factor:		100;
		sprite_id:				SPRITE_ID_NEW_TRAIN;
		speed:				330 km/h;

//		misc_flags:			bitmask(TRAIN_FLAG_MU);
		misc_flags:			bitmask(TRAIN_FLAG_TILT, TRAIN_FLAG_2CC, TRAIN_FLAG_MU, TRAIN_FLAG_AUTOREFIT);

		refit_cost:			0;

		track_type:			ELRL;
		ai_special_flag:			AI_FLAG_PASSENGER;
		power:				1130 kW;
		running_cost_base:		RUNNING_COST_ELECTRIC;
		dual_headed:			1;
		cargo_capacity:			58;
		weight:				17 ton;
		engine_class:			ENGINE_CLASS_ELECTRIC;
		extra_power_per_wagon:		0 kW;
		tractive_effort_coefficient:		1;
		visual_effect_and_powered:		VISUAL_EFFECT_ELECTRIC;

		// Overridden by callback to disable for non-powered wagons:
//		visual_effect_and_powered:    visual_effect_and_powered(VISUAL_EFFECT_ELECTRIC, 0, ENABLE_WAGON_POWER);
		extra_weight_per_wagon:       0 ton;
		bitmask_vehicle_info:         0;
	}

	// define graphics
	graphics {
		default:			sw_ktx_graphics;
		purchase:			set_ktx_purchase_f;
//		articulated_part:		sw_ktx_articulated_part;
//		start_stop:		sw_ktx_start_stop;
//		can_attach_wagon:		sw_ktx_can_attach_wagon;
//		speed:			sw_ktx_speed;
	}

	// I heard that the default passenger wagon's vehicleID is 27 from http://newgrf-specs.tt-wiki.net/wiki/NML:List_of_default_vehicle_IDs
	livery_override(27) {
		default:			set_ktx_center;
	}
}

[Yexo]

A livery override works the opposite way. You have to put the livery_override block in the item-block of the wagon, not the item-block of the engine. Because of this you'll need to also add a wagon to your grf to get this to work. The parameter for the livery_override-block is the id of the engine.

[Telk]

A livery override works the opposite way. You have to put the livery_override block in the item-block of the wagon, not the item-block of the engine. Because of this you'll need to also add a wagon to your grf to get this to work. The parameter for the livery_override-block is the id of the engine.

Thanks for your help. It was very amazing to me.


By the way, if you have a more time could you answer me one more?

NML Tutorial teaches only making an engine.
Then how to make wagon?

Which option should I except in property-block of engine's?

[FooBar]

If so, then both the documentation and the example are wrong. I'm a bit hesitant towards updating those, as I've never workt with livery overrides.

@Telk: making a wagon is basically the same as making an engine. Just set power to 0. And there are probably some other things that you don't need either, like tractive effort. Here's an example from the Dutch Trainset: http://dev.openttdcoop.org/projects/dut ... _item.pnml
From there you can also find an example for engine-dependent wagon graphics without the livery override block, e.g. this: http://dev.openttdcoop.org/projects/dut ... .pnml#L156 That file does many things more, but look specifically at lines 156-160.

[Yexo]

If so, then both the documentation and the example are wrong. I'm a bit hesitant towards updating those, as I've never workt with livery overrides.

Hmm, I can't believe both are wrong, so please ignore my previous post.

I do think however that a livery override only works when both wagon and engine are defined in your own newgrf, that could be another reason why it doesn't work.

[Eddi]

i don't think this is true, because then things like the turbotrain or chimera GRF woudln't work.