LuaEvents.wiki
author Wuzzy
Sat, 18 May 2019 16:04:32 +0100
changeset 1888 b57907ed3131
parent 1874 048c71a203c8
child 1921 e65b834f2dd9
permissions -rw-r--r--
LuaEvents: Remove onPreciseLocal
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
     1
#summary List of event handlers in the Lua API
1839
198bfa280caa LuaEvents: Add label
Wuzzy
parents: 1822
diff changeset
     2
#labels !LuaFunctions
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
     3
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
     4
= Lua API: Event handlers =
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
     5
Event handlers are [LuaAPI Lua] functions that Hedgewars calls on certain events. Lua scripts are supposed to _define_ these functions to do something. The functions are then _called_ by Hedgewars when a certain event has occured. For an example of how this works, see [LuaGuide].
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
     6
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
     7
This page is a list of all supported event handlers in Hedgewars.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
     8
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
     9
<wiki:toc max_depth="3" />
1756
66b51b8ba202 LuaEvents: Add TOC
Wuzzy
parents: 1753
diff changeset
    10
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    11
== Initialization ==
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    12
=== <tt>onGameInit()</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    13
This function is called before the game loads its resources. One can read and modify various [LuaGlobals#Game_variables game variables] here. These variables will become globally available after `onGameInit` has been invoked, but changing them has only an effect in `onGameInit`.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    14
1822
fc9a202d27ba LuaEvents: Update onGameInit info
Wuzzy
parents: 1795
diff changeset
    15
Most game variables are optional, but for missions, `Theme` must be set by the scripter if you want to use a random map, rather than an image map. All other variables do not need to be set by the scripter and have default values. For a list of game variables that can be set here, see [LuaGlobals#Game_variables].
fc9a202d27ba LuaEvents: Update onGameInit info
Wuzzy
parents: 1795
diff changeset
    16
fc9a202d27ba LuaEvents: Update onGameInit info
Wuzzy
parents: 1795
diff changeset
    17
If you want to add teams or hogs manually, you have to do it here. If you want to draw your own map using `AddPoint` and `FlushPoints`, you have to do this within this function as well.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    18
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    19
=== <tt>onGameStart()</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    20
This function is called when the first round starts.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    21
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    22
Can be used to show the mission and for more setup, for example initial target spawning.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    23
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    24
At this stage, the global variables `LeftX`, `RightX`, `TopY`, `LAND_WIDTH` and `LAND_HEIGHT` become available.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    25
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    26
=== <tt>onPreviewInit()</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    27
This function is called when the map preview in the frontend is initialized. This happens when the script is selected or you change a map generator parameter.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    28
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    29
It is useful for scripts which create their own maps (see `AddPoint` and `FlushPoints`). If you create a map in this function, a preview will be generated from this map and is exposed to the frontend.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    30
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    31
=== <tt>onParameters()</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    32
This function is called when the script parameters (as specified in the game scheme) become available. The script parameter string is stored in the global variable `ScriptParam`.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    33
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    34
Please note that it is normally not safe to call many of the other functions inside this function, this function is called very early in the game, only use this to initialize variables and other internal stuff like that.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    35
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    36
*Tip*: If you use the Params library  (`/Scripts/Params.lua`), you can make the task of dissecting the string into useful values a bit easier, but it’s not required. (The Params library is not documented yet, however).
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    37
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    38
*Tip*: If you use this callback, make sure to document the interpretation of the parameters so others know how to set the parameters properly.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    39
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    40
=== <tt>onAmmoStoreInit()</tt> ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    41
This function is called when the game is initialized to request the available ammo and ammo probabilities. Use `SetAmmo` here.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    42
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    43
=== <tt>onNewAmmoStore(team/clan index, hog index)</tt> ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    44
This function is identical to `onAmmoStoreInit` in function, but is called once per ammo store.  This allows different ammo sets for each clan, team or hedgehog depending on the mode.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    45
If `gfSharedAmmo` is set, the parameters passed are the clan index, and `-1`, and the function will be called once for each clan.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    46
If `gfPerHogAmmo` is set, the parameters passed are the team index and the hog index in that team, and the function will be called once for each hedgehog.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    47
If neither is set, the parameters passed are the team index and `-1`, and the function will be called once for each team.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    48
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    49
These indexes can be used to look up details of the clan/team/hedgehog prior to gear creation. Routines to do these lookups will be created as needed.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    50
If you add this hook, the expectation is that you will call SetAmmo appropriately. Any values from `onAmmoStoreInit` are ignored.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    51
1775
9a5472760632 LuaEvents: move tick events to new section
Wuzzy
parents: 1774
diff changeset
    52
== Time events ==
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    53
=== <tt>onGameTick()</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    54
This function is called on every game tick, i.e. 1000 times a second. If you just need to check on something periodically, consider `onGameTick20`.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    55
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    56
=== <tt>onGameTick20()</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    57
This function is called every 20 game ticks, which equals 50 times a second. It reduces Lua overhead for simple monitoring that doesn’t need to happen every single tick.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    58
1775
9a5472760632 LuaEvents: move tick events to new section
Wuzzy
parents: 1774
diff changeset
    59
== Game events ==
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    60
=== <tt>onNewTurn()</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    61
This function calls at the start of every turn. You can set `ReadyTimeLeft` here to change the ready time for this turn. (See also: `Ready`)
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    62
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    63
=== <tt>onEndTurn()</tt> (0.9.24) ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    64
This function calls at the end of every turn. The end of a turn is defined as the point of time after the current hedgehog lost control and all the important gears are either gone or have settled.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    65
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    66
`CurrentHedgehog` holds the gear ID of the hedgehog whose turn just ended.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    67
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    68
This function is called at one of the earliest possible moment after the end of a turn. After this callback, Hedgewars then performs all the other stuff between turns. This includes things like: Applying poison or Sudden Death damage, calculating total hog damage, rising the water in Sudden Death, dropping a crate, checking victory, giving control to the next hog.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    69
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    70
Because this function is called *before* victories are checked, this is useful to set up your victory conditions here.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    71
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    72
=== <tt>onSkipTurn()</tt> (0.9.24) ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    73
This function calls when a hog skips its turn.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    74
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    75
=== <tt>onCaseDrop(gear)</tt> (1.0.0) ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    76
This function calls between two turns right after the moment at which the game *might* drop a crate according to the game scheme settings. It does not matter if it actually wants to drop a crate.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    77
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    78
If a crate was dropped, `gear` is the crate gear that was dropped, if no crate was dropped, `gear` is `nil`.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    79
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    80
This function is useful to add custom crate drops as well.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    81
1774
086bebb89963 LuaEvents: Edited via web interface
Wuzzy
parents: 1770
diff changeset
    82
=== <tt>onSuddenDeath()</tt> ===
086bebb89963 LuaEvents: Edited via web interface
Wuzzy
parents: 1770
diff changeset
    83
This function is called on the start of Sudden Death.
086bebb89963 LuaEvents: Edited via web interface
Wuzzy
parents: 1770
diff changeset
    84
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    85
=== <tt>onGameResult(winningClan)</tt> (0.9.25) ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    86
This function calls when the game ends with a winner or in a draw. If a clan wins, `winningClan` is the clan ID of the winning clan. If the game ends in a draw, `winningClan` is set to -1.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    87
1774
086bebb89963 LuaEvents: Edited via web interface
Wuzzy
parents: 1770
diff changeset
    88
=== <tt>onAchievementsDeclaration()</tt> ===
086bebb89963 LuaEvents: Edited via web interface
Wuzzy
parents: 1770
diff changeset
    89
This function is called after the stats for the stats screen (after the game) have been generated. You are supposed to call `DeclareAchievement` here.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    90
1795
12e1aa6294d7 LuaEvents: Fix onAttack, onHogAttack
Wuzzy
parents: 1775
diff changeset
    91
=== <tt>onHogAttack(ammoType)</tt> ===
12e1aa6294d7 LuaEvents: Fix onAttack, onHogAttack
Wuzzy
parents: 1775
diff changeset
    92
This function is called when a hedgehog attacks. Beginning with 0.9.21, the parameter `ammoType` is provided. It contains the ammo type of the weapon used for the attack. 
12e1aa6294d7 LuaEvents: Fix onAttack, onHogAttack
Wuzzy
parents: 1775
diff changeset
    93
12e1aa6294d7 LuaEvents: Fix onAttack, onHogAttack
Wuzzy
parents: 1775
diff changeset
    94
Note: If you want to detect when a turn was skipped, use `onSkipTurn()`. There is no guarantee that `onHogAttack(amSkip)` is called in such an event.
12e1aa6294d7 LuaEvents: Fix onAttack, onHogAttack
Wuzzy
parents: 1775
diff changeset
    95
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    96
=== <tt>onUsedAmmo(ammoType)</tt> ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    97
Called after a weapon has been used completely, with `ammoType` as the used ammo type.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
    98
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
    99
For example, it is called right after a bazooka is fired, when both shots of a shotgun have been fired, when extra time is used, or when all 4 shots of a portable portal device have been fired. It is also called when using a multi-shot ammo has been aborted by changing the weapon selection mid-way, because this still uses up the ammo.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   100
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   101
*Warning:* In 0.9.24 or earlier, you must not manipulate any ammo within this callback, e.g. by using `AddAmmo`. The ammo storage might become garbled otherwise.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   102
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   103
== Controls ==
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   104
=== <tt>onAttack()</tt> ===
1868
02c1ba88f908 LuaEvents: Clarify description of control events
Wuzzy
parents: 1867
diff changeset
   105
This function is called when the current player presses the attack key.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   106
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   107
=== <tt>onHJump()</tt> ===
1868
02c1ba88f908 LuaEvents: Clarify description of control events
Wuzzy
parents: 1867
diff changeset
   108
This function is called when the current player presses the high jump key.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   109
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   110
=== <tt>onLJump()</tt> ===
1869
b08437e1e087 LuaEvents: typofix
Wuzzy
parents: 1868
diff changeset
   111
This function is called when the current player presses the long jump key.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   112
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   113
=== <tt>onPrecise()</tt> ===
1868
02c1ba88f908 LuaEvents: Clarify description of control events
Wuzzy
parents: 1867
diff changeset
   114
This function is called when the current player presses the precise key.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   115
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   116
=== <tt>onLeft()</tt> ===
1868
02c1ba88f908 LuaEvents: Clarify description of control events
Wuzzy
parents: 1867
diff changeset
   117
This function is called when the current player presses the left key.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   118
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   119
=== <tt>onRight()</tt> ===
1868
02c1ba88f908 LuaEvents: Clarify description of control events
Wuzzy
parents: 1867
diff changeset
   120
This function is called when the current player presses the right key.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   121
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   122
=== <tt>onUp()</tt> ===
1868
02c1ba88f908 LuaEvents: Clarify description of control events
Wuzzy
parents: 1867
diff changeset
   123
This function is called when the current player presses the up key.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   124
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   125
=== <tt>onDown()</tt> ===
1868
02c1ba88f908 LuaEvents: Clarify description of control events
Wuzzy
parents: 1867
diff changeset
   126
This function is called when the current player presses the down key.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   127
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   128
=== <tt>onAttackUp()</tt> ===
1868
02c1ba88f908 LuaEvents: Clarify description of control events
Wuzzy
parents: 1867
diff changeset
   129
This function is called when the current player releases the attack key.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   130
1874
048c71a203c8 LuaEvents: Fix description of onSwitch
Wuzzy
parents: 1869
diff changeset
   131
=== <tt>onLeftUp()</tt> ===
048c71a203c8 LuaEvents: Fix description of onSwitch
Wuzzy
parents: 1869
diff changeset
   132
This function is called when the current player releases the left key.
048c71a203c8 LuaEvents: Fix description of onSwitch
Wuzzy
parents: 1869
diff changeset
   133
048c71a203c8 LuaEvents: Fix description of onSwitch
Wuzzy
parents: 1869
diff changeset
   134
=== <tt>onRightUp()</tt> ===
048c71a203c8 LuaEvents: Fix description of onSwitch
Wuzzy
parents: 1869
diff changeset
   135
This function is called when the current player releases the right key.
048c71a203c8 LuaEvents: Fix description of onSwitch
Wuzzy
parents: 1869
diff changeset
   136
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   137
=== <tt>onDownUp()</tt> ===
1868
02c1ba88f908 LuaEvents: Clarify description of control events
Wuzzy
parents: 1867
diff changeset
   138
This function is called when the current player releases the down key.
1874
048c71a203c8 LuaEvents: Fix description of onSwitch
Wuzzy
parents: 1869
diff changeset
   139
048c71a203c8 LuaEvents: Fix description of onSwitch
Wuzzy
parents: 1869
diff changeset
   140
=== <tt>onUpUp()</tt> ===
048c71a203c8 LuaEvents: Fix description of onSwitch
Wuzzy
parents: 1869
diff changeset
   141
This function is called when you release the up key. 
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   142
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   143
=== <tt>onPreciseUp()</tt> ===
1868
02c1ba88f908 LuaEvents: Clarify description of control events
Wuzzy
parents: 1867
diff changeset
   144
This function is called when the current player releases the precise key.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   145
1874
048c71a203c8 LuaEvents: Fix description of onSwitch
Wuzzy
parents: 1869
diff changeset
   146
=== <tt>onSwitch()</tt> ===
048c71a203c8 LuaEvents: Fix description of onSwitch
Wuzzy
parents: 1869
diff changeset
   147
This function is called when the current player presses the switch key.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   148
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   149
=== <tt>onSetWeapon(msgParam)</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   150
It is get called when a weapon is selected or switched.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   151
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   152
`msgParam` tells you which ammo type was selected.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   153
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   154
=== <tt>onSlot(msgParam)</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   155
This function is called when one of the weapon slot keys has been pressed.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   156
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   157
`msgParam` tells the slot number minus 1 (i.e. `0` is for slot number 1, `1` is for slot number 2, etc.).
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   158
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   159
=== <tt>onTaunt(msgParam)</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   160
This function is called when the player uses an animated emote for example by using the chat commands `/wave`, `/juggle`, etc.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   161
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   162
`msgParam` tells you which animation was played:
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   163
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   164
|| *`msgParam`* || *Animation* || *Associated chat command* ||
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   165
|| 0 || Rolling up || `/rollup` ||
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   166
|| 1 || Sad face || `/sad` ||
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   167
|| 2 || Waving hand || `/wave` ||
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   168
|| 3 || Stupid winner's grin / “Awesome” face || `/hurrah` ||
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   169
|| 4 || Peeing || `/ilovelotsoflemonade` ||
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   170
|| 5 || Shrug || `/shrug` ||
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   171
|| 6 || Juggling || `/juggle` ||
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   172
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   173
=== <tt>onTimer(msgParam)</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   174
This function is called when one of the timer keys is pressed.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   175
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   176
`msgParams` tells the set timer in seconds (i.e. `3` for the 3 seconds timer key).
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   177
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   178
=== <tt>onScreenResize()</tt> ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   179
This function is called when you resize the screen. Useful place to put a redraw function for any `vgtHealthTags` you're using.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   180
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   181
== Gears ==
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   182
=== <tt>onGearAdd(gearUid)</tt> ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   183
This function is called when a new gear is added. Useful in combination with `GetGearType(gearUid)`.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   184
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   185
=== <tt>onGearDelete(gearUid)</tt> ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   186
This function is called when a new gear is deleted. Useful in combination with `GetGearType(gearUid)`.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   187
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   188
=== <tt>onVisualGearAdd(vgUid)</tt> ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   189
This function is called when a new visual gear is added. Useful in combination with `GetVisualGearType(vgUid)`.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   190
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   191
=== <tt>onVisualGearDelete(vgUid)</tt> ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   192
This function is called when a new visual gear is deleted. Useful in combination with `GetVisualGearType(vgUid)`.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   193
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   194
=== <tt>onGearDamage(gearUid, damage)</tt> ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   195
This function is called when a gear is damaged.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   196
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   197
Example:
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   198
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   199
<code language="lua">    function onGearDamage(gear, damage)
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   200
        if (GetGearType(gear) === gtHedgehog) then
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   201
            -- adds a message saying, e.g. "Hoggy H took 25 points of damage"
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   202
            AddCaption(GetHogName(gear) .. ' took ' .. damage .. ' points of damage')
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   203
        end
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   204
    end</code>
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   205
=== <tt>onGearResurrect(gearUid, spawnedVGear) </tt> ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   206
This function is called when a gear is resurrected due to the hog effect `heResurrectable` being set (see `SetEffect`) and/or being an AI hog when the game modifier “AI Survival” (`gfAISurvival`) is active. It is *not* called when a hog was resurrected by the resurrector tool you can use in the game.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   207
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   208
`spawnedVGear` is a visual gear handle of the “resurrection effect”. You can use this handle to modify or delete the resurrection animation.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   209
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   210
=== <tt>onGearWaterSkip(gear)</tt> ===
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   211
This function is called when the gear `gear` skips over water.
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   212
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   213
=== <tt>onHogHide(gearUid)</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   214
This function is called when a hedgehog with the gear ID `gearUid` is hidden (removed from the map).
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   215
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   216
=== <tt>onHogRestore(gearUid)</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   217
This function is called when a hedgehog with the specified gear ID `gearUid` is restored (unhidden).
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   218
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   219
== Map changes ==
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   220
=== <tt>onSpritePlacement(spriteId, centerX, centerY)</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   221
This function is called when a [Sprites Sprite] has been placed.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   222
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   223
`spriteID` is the type of the sprite, you find a list at [Sprites Sprites]. `centerX` and `centerY` are the coordinates of the center of the sprite.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   224
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   225
=== <tt>onGirderPlacement(frameIdx, centerX, centerY)</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   226
This function is called when a girder has been placed.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   227
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   228
`frameIdx` is used for the length and orientation of the girder. The possible values are explained in `PlaceGirder`. `centerX` and `centerY` are the coordinates of the girder’s center.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   229
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   230
=== <tt>onRubberPlacement(frameIdx, centerX, centerY)</tt> ===
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   231
This function is called when a rubber has been placed.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   232
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   233
`frameIdx` is used for the rubber orientation. The possible values are explained in `PlaceRubber`. `centerX` and `centerY` are the coordinates of the rubber’s center.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   234
1770
729bef6b40da LuaEvents: Restructure events into sections
Wuzzy
parents: 1769
diff changeset
   235
=== <tt>onSpecialPoint(x, y, flags)</tt> ===
1768
43762534f5ab LuaEvents: Remove note to 0.9.23
Wuzzy
parents: 1756
diff changeset
   236
This is used while a special hand-drawn map is loaded. The engine is building these hand-drawn maps by reading points from the map definition. Optionally, some of these points may be “special”. These are not actually drawn on the map, but are used to store additional information for a position on the map. Special points currently need to be added manually in the map, the in-game editor is not able to add those yet.
1749
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   237
Now, when such a special point at the coordinates `x` and `y` with an assigned value of `flags` is added, this function is called. `flags` is a whole number between `0` and `255` inclusive.
91756d20ce3e Separate core Lua stuff into new Lua pages for better maintainability. Main LuaAPI page not touched yet
Wuzzy <almikes@aol.com>
parents:
diff changeset
   238
1774
086bebb89963 LuaEvents: Edited via web interface
Wuzzy
parents: 1770
diff changeset
   239
This function is used in Racer and !TechRacer to define waypoints.