private static bool IsHatX(SDLFeatureDescriptor feature)
{
return(feature.featureType == JoystickFeatureType.Hat &&
(feature.usageHint == (int)SDLAxisUsage.Hat0X ||
feature.usageHint == (int)SDLAxisUsage.Hat1X ||
feature.usageHint == (int)SDLAxisUsage.Hat2X ||
feature.usageHint == (int)SDLAxisUsage.Hat3X));
}
private static void BuildHatFeature(ref InputControlLayout.Builder builder, SDLFeatureDescriptor xFeature, SDLFeatureDescriptor yFeature)
{
Debug.Assert(xFeature.offset < yFeature.offset, "Order of features must be X followed by Y");
var hat = HatNumber(xFeature);
var hatName = hat > 1 ? $"Hat{hat}" : "Hat";
builder.AddControl(hatName)
.WithLayout("Dpad")
.WithByteOffset((uint)xFeature.offset)
.WithSizeInBits((uint)xFeature.featureSize * 8 + (uint)yFeature.featureSize * 8)
.WithUsages(CommonUsages.Hatswitch);
builder.AddControl(hatName + "/up")
.WithFormat(InputStateBlock.FormatInt)
.WithParameters("scale,scaleFactor=2147483647,clamp,clampMin=-1,clampMax=0,invert")
.WithByteOffset(4)
.WithBitOffset(0)
.WithSizeInBits((uint)yFeature.featureSize * 8);
builder.AddControl(hatName + "/down")
.WithFormat(InputStateBlock.FormatInt)
.WithParameters("scale,scaleFactor=2147483647,clamp,clampMin=0,clampMax=1")
.WithByteOffset(4)
.WithBitOffset(0)
.WithSizeInBits((uint)yFeature.featureSize * 8);
builder.AddControl(hatName + "/left")
.WithFormat(InputStateBlock.FormatInt)
.WithParameters("scale,scaleFactor=2147483647,clamp,clampMin=-1,clampMax=0,invert")
.WithByteOffset(0)
.WithBitOffset(0)
.WithSizeInBits((uint)xFeature.featureSize * 8);
builder.AddControl(hatName + "/right")
.WithFormat(InputStateBlock.FormatInt)
.WithParameters("scale,scaleFactor=2147483647,clamp,clampMin=0,clampMax=1")
.WithByteOffset(0)
.WithBitOffset(0)
.WithSizeInBits((uint)xFeature.featureSize * 8);
}
private static void BuildStickFeature(ref InputControlLayout.Builder builder, SDLFeatureDescriptor xFeature, SDLFeatureDescriptor yFeature)
{
int byteOffset;
if (xFeature.offset <= yFeature.offset)
{
byteOffset = xFeature.offset;
}
else
{
byteOffset = yFeature.offset;
}
const string stickName = "Stick";
builder.AddControl(stickName)
.WithLayout("Stick")
.WithByteOffset((uint)byteOffset)
.WithSizeInBits((uint)xFeature.featureSize * 8 + (uint)yFeature.featureSize * 8)
.WithUsages(CommonUsages.Primary2DMotion);
builder.AddControl(stickName + "/x")
.WithFormat(InputStateBlock.FormatInt)
.WithByteOffset(0)
.WithSizeInBits((uint)xFeature.featureSize * 8)
.WithParameters("clamp=1,clampMin=-1,clampMax=1,scale,scaleFactor=65538");
builder.AddControl(stickName + "/y")
.WithFormat(InputStateBlock.FormatInt)
.WithByteOffset(4)
.WithSizeInBits((uint)xFeature.featureSize * 8)
.WithParameters("clamp=1,clampMin=-1,clampMax=1,scale,scaleFactor=65538,invert");
builder.AddControl(stickName + "/up")
.WithParameters("clamp=1,clampMin=-1,clampMax=0,scale,scaleFactor=65538,invert");
builder.AddControl(stickName + "/down")
.WithParameters("clamp=1,clampMin=0,clampMax=1,scale,scaleFactor=65538,invert=false");
builder.AddControl(stickName + "/left")
.WithParameters("clamp=1,clampMin=-1,clampMax=0,scale,scaleFactor=65538,invert");
builder.AddControl(stickName + "/right")
.WithParameters("clamp=1,clampMin=0,clampMax=1,scale,scaleFactor=65538");
}
private static bool IsAxis(SDLFeatureDescriptor feature, SDLAxisUsage axis)
{
return(feature.featureType == JoystickFeatureType.Axis &&
feature.usageHint == (int)axis);
}
private static int HatNumber(SDLFeatureDescriptor feature)
{
Debug.Assert(feature.featureType == JoystickFeatureType.Hat);
return(1 + (feature.usageHint - (int)SDLAxisUsage.Hat0X) / 2);
}