Requirements:

• You have read and understood Your First Custom Engines

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ACE supports having more than just the stock 6 engine types. With a custom engine type, you can modify the following properties:

• Efficiency (fuel used per unit of power created)
• Torque Scale (how quickly torque drops with damage taken)
• HP multiplier
• Generic torque curves, applied to all engines of that type

Defining your engine type

There isn't much required to create a custom engine type - all that's needed is 4 definitions at the top of your custom engine file. Here is an example of what's needed to create a custom engine type called CustomV8, and an engine using said type.

ACF.Efficiency.CustomV8 = 0.3
ACF.TorqueScale.CustomV8 = 0.2
ACF.EngineHPMult.CustomV8 = 0.5
ACF.GenericTorqueCurves.CustomV8 = {0.3, 0.55, 0.7, 0.85, 1, 0.9, 0.7}

ACF_DefineEngine( "6.9-V8", {
	name = "6.9L Nice V8 Petrol",
	desc = "A very NICE looking V8",
	model = "models/engines/v8m.mdl",
	sound = "acf_engines/b6_petrolsmall.wav",
	category = "V8",
	fuel = "Petrol",
	requiresfuel = false,
	enginetype = "CustomV8",
	weight = 100,
	torque = 200,
	flywheelmass = 0.1,
	idlerpm = 750,
	limitrpm = 6969
} )