public override void Setup(SyncObject syncObject)
{
obj = syncObject;
node = obj.Node;
obj.RegisterEventHandler("grab", OnGrab);
obj.RegisterEventHandler("ungrab", OnUngrab);
obj.WriteDebugLog("grabbable", $"Registered event handlers");
}
public override void Setup(SyncObject syncObject)
{
obj = syncObject;
node = obj.Node;
obj.RegisterEventHandler("collisionStart", OnCollisionStart);
obj.WriteDebugLog("objectMoveButton", $"Registered event handlers");
}
public void RegisterHandlers()
{
// Search event handlers
foreach (var export in Module.Exports.Where(ex => ex.Kind == WebAssembly.ExternalKind.Function))
{
// Event handlers should have names like handle_EVENTNAME
if (!export.Name.StartsWith("handle_"))
{
continue;
}
string funcName = export.Name;
string eventName = export.Name.Substring("handle_".Length);
// signature check
// (event handlers should have signatures "void handle_EVENTNAME(i32 sender)")
// Because function index space counts imported functions,
// we have to subtract the number of imported functions before getting a Function from Module.Functions.
// See:
// https://webassembly.github.io/spec/core/syntax/modules.html#syntax-funcidx
// https://webassembly.github.io/spec/core/syntax/modules.html#imports
var numImportedFuncs = Module.Imports.Count(import => import.Kind == ExternalKind.Function);
var funcTypeIdx = Module.Functions[(int)export.Index - numImportedFuncs].Type;
var funcType = Module.Types[(int)funcTypeIdx];
if (funcType.Returns.Count != 0)
{
Logger.Error("ObjectWasmRunner", $"{funcName}: An event handler must not have return value.");
return;
}
if (funcType.Parameters.Count != 1 || funcType.Parameters[0] != WebAssemblyValueType.Int32)
{
Logger.Error("ObjectWasmRunner", $"{funcName}: An event handler must accept one i32 argument.");
return;
}
// Register as a handler
// TODO: unregister
Object.RegisterEventHandler(eventName, (sender, args) => {
eventArgs = args;
insideEventHandler = true;
CallWasmFuncWithExceptionHandling(funcName, (int)sender);
insideEventHandler = false;
});
}
// Search "update" function
WebAssembly.Export updateExport = FindExport("update", WebAssembly.ExternalKind.Function);
if (updateExport != null)
{
// TODO: signature check (update should have "void update(f32 dt)")
Object.BeforeSync += CallUpdateFunction;
}
}
public void Setup(SyncObject syncObject)
{
syncObject.RegisterEventHandler("clickStart", OnClickStart);
obj = syncObject;
ChangeLedState(state);
}
