#summary Lua library documentation of !TargetPractice; for creating simple target practice missions

#labels !LuaLibrary

= Lua library: `TargetPractice` =

Starting with 0.9.21, this library provides a function to create an entire target practice mission which follows some basic properties.

Here is a brief description of the generated missions:

 * The player will get a team with a single hedgehog.

 * The team gets a single predefined weapon infinitely times.

 * A fixed sequence of targets will spawn at predefined positions.

 * When a target has been destroyed, the next target of the target sequence appears

 * The mission ends successfully when all targets have been destroyed

 * The mission ends unsuccessfully when the time runs out or the hedgehog dies

 * When the mission ends, a score is awarded, based on the performance (hit targets, accuracy and remaining time) of the hedgehog. When not all targets are hit, there will be no accuracy and time bonuses.

If you want to create a more sophisticated training mission, use your own code instead. The main motivation to write this library was to reduce redundancy in existing target practice missions.

== `TargetPracticeMission(params)` ==

This function sets up the *entire* training mission and needs one argument: `params`.

`params` is a table containing fields which describe the training mission.

There are mandatory and optional fields. The optional fields have default values.

Mandatory fields:

|| *Field name* || *Description* ||

|| `missionTitle` || The name of the mission ||

|| `map` || The name of the image map to be used ||

|| `theme` || The name of the theme (can be background theme, too) ||

|| `time` || The time limit in milliseconds ||

|| `ammoType` || The [AmmoTypes ammo type] of the weapon to be used ||

|| `gearType` || The [GearTypes gear type] of the gear which is fired by the weapon (used to count shots) ||

|| `targets` || The coordinates of where the targets will be spawned. It is a table containing tables containing coordinates of format `{ x=value, y=value }`. The targets will be spawned in the same order as specified the coordinate tables appear. There must be at least 1 target. ||

Optional fields:

|| *Field name* || *Description * ||

|| `wind` || The initial wind (`-100` to `100`) (default: `0` (no wind)) ||

|| `solidLand` || Weather the terrain is indestructible (default: `false`) ||

|| `artillery` || If `true`, the hog can’t move (default: `false`) ||

|| `clanColor` || Color of the (only) clan (default: `0xFF0204`, which is a red tone) ||

|| `goalText` || A short string explaining the goal of the mission (default: `"Destroy all targets within the time!"`) ||

|| `shootText` || A string which says how many times the player shot, “`%d`” is replaced by the number of shots. (default: `"You have shot %d times."`) ||

|| `faceLeft` || If `true`, hedgehog faces left (default: `false`) ||

=== Example ===

Below is the complete source code of the mission “Target Practice: Cluster Bomb”:

<code language="lua">HedgewarsScriptLoad("/Scripts/TargetPractice.lua")

local params = {

	ammoType = amClusterBomb,

	gearType = gtClusterBomb,

	missionTitle = "Cluster Bomb Training",

	solidLand = false,

	map = "Trash",

	theme = "Golf",

	hog_x = 756,

	hog_y = 370,

	targets = {

		{ x = 628, y = 0 },

		{ x = 891, y = 0 },

		{ x = 1309, y = 0 },

		{ x = 1128, y = 0 },

		{ x = 410, y = 0 },

		{ x = 1564, y = 0 },

		{ x = 1248, y = 476 },

		{ x = 169, y = 0 },

		{ x = 1720, y = 0 },

		{ x = 1441, y = 0 },

		{ x = 599, y = 0 },

		{ x = 1638, y = 0 },

	},

	time = 180000,

	shootText = loc("You have thrown %d cluster bombs."),

}

TargetPracticeMission(params)</code>