# Khaotic Engine Reborn: enginecustom/src/src/system/font_class.cpp Source File

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font_class.cpp
#include "font_class.h"
font_class::font_class()
{
m_Font = 0;
m_Texture = 0;
}
font_class::font_class(const font_class& other)
{
}
font_class::~font_class()
{
}
bool font_class::Initialize(ID3D11Device* device, ID3D11DeviceContext* deviceContext, int fontChoice)
{
Logger::Get().Log("Initializing font class", __FILE__, __LINE__, Logger::LogLevel::Initialize);
char fontFilename[128];
char fontTextureFilename[128];
bool result;
// Choose one of the available fonts, and default to the first font otherwise.
switch (fontChoice)
{
case 0:
{
strcpy_s(fontFilename, "font01.txt");
strcpy_s(fontTextureFilename, "font01.tga");
m_fontHeight = 32.0f;
m_spaceSize = 3;
break;
}
default:
{
strcpy_s(fontFilename, "font01.txt");
strcpy_s(fontTextureFilename, "font01.tga");
m_fontHeight = 32.0f;
m_spaceSize = 3;
break;
}
}
// Load in the text file containing the font data.
result = LoadFontData(fontFilename);
if (!result)
{
Logger::Get().Log("Failed to load font data", __FILE__, __LINE__, Logger::LogLevel::Error);
return false;
}
// Load the texture that has the font characters on it.
result = LoadTexture(device, deviceContext, fontTextureFilename);
if (!result)
{
Logger::Get().Log("Failed to load font texture", __FILE__, __LINE__, Logger::LogLevel::Error);
return false;
}
Logger::Get().Log("Font class initialized", __FILE__, __LINE__, Logger::LogLevel::Initialize);
return true;
}
void font_class::Shutdown()
{
// Release the font texture.
ReleaseTexture();
// Release the font data.
ReleaseFontData();
return;
}
bool font_class::LoadFontData(char* filename)
{
Logger::Get().Log(("Loading font data from %s", filename), __FILE__, __LINE__);
std::ifstream fin;
int i;
char temp;
// Create the font spacing buffer.
m_Font = new FontType[95];
// Read in the font size and spacing between chars.
fin.open(filename);
if (fin.fail())
{
Logger::Get().Log("Failed to open font file", __FILE__, __LINE__, Logger::LogLevel::Error);
return false;
}
// Read in the 95 used ascii characters for text.
for (i = 0; i < 95; i++)
{
fin.get(temp);
while (temp != ' ')
{
fin.get(temp);
}
fin.get(temp);
while (temp != ' ')
{
fin.get(temp);
}
fin >> m_Font[i].left;
fin >> m_Font[i].right;
fin >> m_Font[i].size;
}
// Close the file.
fin.close();
Logger::Get().Log("Font data loaded", __FILE__, __LINE__);
return true;
}
void font_class::ReleaseFontData()
{
// Release the font data array.
if (m_Font)
{
delete[] m_Font;
m_Font = 0;
}
return;
}
bool font_class::LoadTexture(ID3D11Device* device, ID3D11DeviceContext* deviceContext, char* filename)
{
Logger::Get().Log(("Loading font texture from %s", filename), __FILE__, __LINE__);
bool result;
// Create and initialize the font texture object.
m_Texture = new texture_class;
result = m_Texture->Initialize(device, deviceContext, filename);
if (!result)
{
Logger::Get().Log("Failed to initialize font texture", __FILE__, __LINE__, Logger::LogLevel::Error);
return false;
}
Logger::Get().Log("Font texture loaded", __FILE__, __LINE__);
return true;
}
void font_class::ReleaseTexture()
{
// Release the texture object.
if (m_Texture)
{
m_Texture->Shutdown();
delete m_Texture;
m_Texture = 0;
}
return;
}
ID3D11ShaderResourceView* font_class::GetTexture()
{
return m_Texture->GetTexture();
}
void font_class::BuildVertexArray(void* vertices, char* sentence, float drawX, float drawY)
{
VertexType* vertexPtr;
int numLetters, index, i, letter;
// Coerce the input vertices into a VertexType structure.
vertexPtr = (VertexType*)vertices;
// Get the number of letters in the sentence.
numLetters = (int)strlen(sentence);
// Initialize the index to the vertex array.
index = 0;
// Draw each letter onto a quad.
for (i = 0; i < numLetters; i++)
{
letter = ((int)sentence[i]) - 32;
// If the letter is a space then just move over three pixels.
if (letter == 0)
{
drawX = drawX + m_spaceSize;
}
else
{
// First triangle in quad.
vertexPtr[index].position = XMFLOAT3(drawX, drawY, 0.0f); // Top left.
vertexPtr[index].texture = XMFLOAT2(m_Font[letter].left, 0.0f);
index++;
vertexPtr[index].position = XMFLOAT3((drawX + m_Font[letter].size), (drawY - m_fontHeight), 0.0f); // Bottom right.
vertexPtr[index].texture = XMFLOAT2(m_Font[letter].right, 1.0f);
index++;
vertexPtr[index].position = XMFLOAT3(drawX, (drawY - m_fontHeight), 0.0f); // Bottom left.
vertexPtr[index].texture = XMFLOAT2(m_Font[letter].left, 1.0f);
index++;
// Second triangle in quad.
vertexPtr[index].position = XMFLOAT3(drawX, drawY, 0.0f); // Top left.
vertexPtr[index].texture = XMFLOAT2(m_Font[letter].left, 0.0f);
index++;
vertexPtr[index].position = XMFLOAT3(drawX + m_Font[letter].size, drawY, 0.0f); // Top right.
vertexPtr[index].texture = XMFLOAT2(m_Font[letter].right, 0.0f);
index++;
vertexPtr[index].position = XMFLOAT3((drawX + m_Font[letter].size), (drawY - m_fontHeight), 0.0f); // Bottom right.
vertexPtr[index].texture = XMFLOAT2(m_Font[letter].right, 1.0f);
index++;
// Update the x location for drawing by the size of the letter and one pixel.
drawX = drawX + m_Font[letter].size + 1.0f;
}
}
return;
}
int font_class::GetSentencePixelLength(char* sentence)
{
int pixelLength, numLetters, i, letter;
pixelLength = 0;
numLetters = (int)strlen(sentence);
for (i = 0; i < numLetters; i++)
{
letter = ((int)sentence[i]) - 32;
// If the letter is a space then count it as three pixels.
if (letter == 0)
{
pixelLength += m_spaceSize;
}
else
{
pixelLength += (m_Font[letter].size + 1);
}
}
return pixelLength;
}
int font_class::GetFontHeight()
{
return (int)m_fontHeight;
}
font_class
Definition font_class.h:23
texture_class
Definition texture_class.h:17