Lua in SpringRTS/Callins
Callins
editCallins are functions defined in your script that Spring calls when a determined event takes place.
You should think of callins as event handlers that are met in some programming languages. In every event inside the engine a call comes to your script and invokes your function.
Here's an example:
function widget:Initialize()
Spring.Echo("Widget has loaded")
end
As you see in the table bellow the Initialize() callin is invoked whenever a script is loaded. So in this example once the script is loaded by the engine, everything inside the chunk of our function is executed.
In our example we will get a message "Widget has loaded". As the callin Initialize() is only invoked once per game, we get that message only once and that is in the beginning of the game.
| Callin name | Description | Synced mode | Unsynced mode |
|---|---|---|---|
| AddConsoleLine() | |||
| AllowCommand() | |||
| AllowFeatureBuildStep() | |||
| AllowFeatureCreation() | |||
| AllowResourceLevel() | |||
| AllowResourceTransfer() | |||
| AllowUnitBuildStep() | |||
| AllowUnitCreation() | |||
| AllowUnitTransfer() | |||
| CobCallback() | |||
| CommandFallback() | |||
| CommandNotify() | |||
| CommandsChanged() | |||
| ConfigureLayout() | |||
| DrawGenesis() | DON'T USE | ||
| DrawInMiniMap() | |||
| DrawScreen() | |||
| DrawScreenEffects() | |||
| DrawWorld() | DON'T USE | ||
| DrawWorldPreUnit() | DON'T USE | ||
| DrawWorldReflection() | |||
| DrawWorldRefraction() | |||
| DrawWorldShadow() | |||
| Explosion() | |||
| FeatureCreated() | |||
| FeatureDestroyed() | Runs when a feature in the game gets destroyed | ||
| GameFrame() | |||
| GameOver() | Runs when the game ending condition is met | ||
| GamePreload() | |||
| GameStart() | Runs when the game starts | ||
| GetTooltip() | |||
| GroupChanged() | Runs when the values in a group table change | ||
| Initialize() | Runs once the script is loaded | Yes | Yes |
| IsAbove() | |||
| KeyPress() | Runs when a keyboard key is pressed(not released) | ||
| KeyRelease() | Runs when a keyboard key is released(after being pressed) | ||
| LayoutButtons() | |||
| MapDrawCmd() | |||
| MouseMove() | Runs when the mouse cursor is moved | ||
| MousePress() | Runs when one of the mouse buttons is being pressed(not released) | ||
| MouseRelease() | Runs when one of the mouse buttons is released(after being pressed) | ||
| ProjectileCreated() | |||
| ProjectileDestroyed() | |||
| ShockFront() | |||
| Shutdown() | |||
| StockpileChanged() | |||
| TeamDied() | Runs when a team gets elimintaed | ||
| TerraformComplete() | |||
| UnitCloaked() | Runs when a unit is being cloaked | ||
| UnitCmdDone() | |||
| UnitCommand() | |||
| UnitCreated() | Runs when a unit instance is being made | Yes | Yes |
| UnitDamaged() | Runs when a unit is being attacked(and damaged) by an other unit | ||
| UnitDecloaked() | Runs when a unit is being decloaked | ||
| UnitDestroyed() | Runs when a unit gets destroyed | Yes | Yes |
| UnitEnteredAir() | |||
| UnitEnteredLos() | |||
| UnitEnteredRadar() | |||
| UnitEnteredWater() | Runs when a unit enters the water | ||
| UnitFinished() | |||
| UnitFromFactory() | Runs when a unit is done being built from a factory | ||
| UnitGiven() | Runs when a unit is given to a player | ||
| UnitIdle() | Runs when a unit becomes idle | ||
| UnitLeftAir() | |||
| UnitLeftLos() | |||
| UnitLeftRadar() | |||
| UnitLeftWater() | |||
| UnitLoaded() | |||
| UnitMoveFailed() | |||
| UnitPreDamaged() | Runs when a unit gets damaged for some reason. This can be either due to an attack or a side effect(other unit's explosions for example) | Yes | |
| UnitSeismicPing() | |||
| UnitTaken() | |||
| UnitUnloaded() | |||
| WorldTooltip() |