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ControllerFont
This is a C++ implementation of a helper that will composite Xbox controller artwork into a string inspired by this XNA tutorial.
For details on creating the xboxController.spritefont file, see MakeSpriteFont.
enum class ControllerFont : wchar_t
{
LeftThumb = L' ',
DPad = L'!',
RightThumb = L'\"',
Back = L'#',
Guide = L'$',
Start = L'%',
XButton = L'&',
AButton = L'\'',
YButton = L'(',
BButton = L')',
RightShoulder = L'*',
RightTrigger = L'+',
LeftTrigger = L',',
LeftShoulder = L'-',
};
inline void XM_CALLCONV DrawControllerString(DirectX::SpriteBatch* spriteBatch,
DirectX::SpriteFont* textFont, DirectX::SpriteFont* butnFont,
wchar_t const* text, DirectX::XMFLOAT2 const& position,
DirectX::FXMVECTOR color = DirectX::Colors::White, float scale = 1)
{
using namespace DirectX;
size_t textLen = wcslen(text);
if (textLen >= 4096)
{
throw std::out_of_range("String is too long");
}
float buttonHeight = butnFont->GetLineSpacing();
float buttonScale = (textFont->GetLineSpacing() * scale) / buttonHeight;
float offsetY = buttonScale / 2.f;
size_t j = 0;
wchar_t strBuffer[4096] = {};
bool buttonText = false;
XMFLOAT2 outPos = position;
for (size_t ch = 0; ch < textLen; ++ch)
{
if (buttonText)
{
strBuffer[j++] = text[ch];
if (text[ch] == L']')
{
wchar_t button[2] = {};
if (_wcsicmp(strBuffer, L"[A]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::AButton);
}
else if (_wcsicmp(strBuffer, L"[B]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::BButton);
}
else if (_wcsicmp(strBuffer, L"[X]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::XButton);
}
else if (_wcsicmp(strBuffer, L"[Y]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::YButton);
}
else if (_wcsicmp(strBuffer, L"[DPad]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::DPad);
}
else if (_wcsicmp(strBuffer, L"[Back]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::Back);
}
else if (_wcsicmp(strBuffer, L"[Start]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::Start);
}
else if (_wcsicmp(strBuffer, L"[Guide]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::Guide);
}
else if (_wcsicmp(strBuffer, L"[RThumb]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::RightThumb);
}
else if (_wcsicmp(strBuffer, L"[LThumb]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::LeftThumb);
}
else if (_wcsicmp(strBuffer, L"[RB]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::RightShoulder);
}
else if (_wcsicmp(strBuffer, L"[LB]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::LeftShoulder);
}
else if (_wcsicmp(strBuffer, L"[RT]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::RightTrigger);
}
else if (_wcsicmp(strBuffer, L"[LT]") == 0)
{
*button = static_cast<wchar_t>(ControllerFont::LeftTrigger);
}
if ( *button )
{
float bsize = XMVectorGetX(butnFont->MeasureString(button));
float offsetX = (bsize * buttonScale / 2.f);
outPos.x += offsetX;
outPos.y -= offsetY;
butnFont->DrawString(spriteBatch, button, outPos, Colors::White, 0.f, XMFLOAT2(0.f, 0.f), XMFLOAT2(buttonScale, buttonScale));
outPos.x += bsize * buttonScale;
outPos.y += offsetY;
}
memset(strBuffer, 0, sizeof(strBuffer));
j = 0;
buttonText = false;
}
}
else
{
switch (text[ch])
{
case '\r':
break;
case '[':
if (*strBuffer)
{
textFont->DrawString(spriteBatch, strBuffer, outPos, color, 0.f, XMFLOAT2(0.f, 0.f), XMFLOAT2(scale,scale));
outPos.x += XMVectorGetX(textFont->MeasureString(strBuffer)) * scale;
memset(strBuffer, 0, sizeof(strBuffer));
j = 0;
}
buttonText = true;
*strBuffer = L'[';
++j;
break;
case '\n':
if (*strBuffer)
{
textFont->DrawString(spriteBatch, strBuffer, outPos, color, 0.f, XMFLOAT2(0.f, 0.f), XMFLOAT2(scale, scale));
memset(strBuffer, 0, sizeof(strBuffer));
j = 0;
}
outPos.x = position.x;
outPos.y += textFont->GetLineSpacing() * scale;
break;
default:
strBuffer[j++] = text[ch];
break;
}
}
}
if (*strBuffer)
{
textFont->DrawString(spriteBatch, strBuffer, outPos, color, 0.f, XMFLOAT2(0.f, 0.f), XMFLOAT2(scale, scale));
}
}To use the controller, you need to create and initialize two SpriteFont instances, and a SpriteBatch. Declare the following variables:
std::unique_ptr<DirectX::SpriteBatch> m_batch;
std::unique_ptr<DirectX::SpriteFont> m_font;
std::unique_ptr<DirectX::SpriteFont> m_ctrlFont;Initialize the instances:
m_batch = std::make_unique<SpriteBatch>(context);
m_font = std::make_unique<SpriteFont>(device, L"myfont.spritefont" );
m_ctrlFont = std::make_unique<SpriteFont>(device, L"xboxController.spritefont" );In the Render function, you use the helper to draw the composed text:
m_batch->Begin();
DX::DrawControllerString(m_batch.get(), m_font.get(), m_ctrlFont.get(),
L"Press [A] to select", pos);
pos.y += m_font->GetLineSpacing();
DX::DrawControllerString(m_batch.get(), m_font.get(), m_ctrlFont.get(),
L"Press [B] to backup", pos);
m_batch->End();