/**
* @brief Print line info
* @param _line Line to print
*/
void print_line(Line const &_line)
{
DebugLogPrint("LINE:\n");
DebugLogPrint("POSITION:\n");
print_vector(_line.position);
DebugLogPrint("LENGTH: %f\n", _line.length);
}
/**
* @brief Load an image by file name.
* @param aName Name of the file.
*/
void PCShaderSurface::LoadImage(HashString const &aName)
{
/* If the file was already loaded,
let's avoid assigning a new id. */
TextureData const& textureData = GetManager()->GetTextureData(aName);
if(textureData.mTextureID != (unsigned)-1)
{
mTextureID = textureData.mTextureID;
SetTextureSize(Vector3(textureData.mWidth, textureData.mHeight, 0));
}
// else we load the image from file
else if((mSurface = IMG_Load(Common::RelativePath("Art", aName).c_str())))
{
if ((mSurface->w & (mSurface->w - 1)) != 0 )
{
DebugLogPrint("warning: width of image: %s is not a power of 2\n", aName.ToCharArray());
}
if ((mSurface->h & (mSurface->h - 1)) != 0 )
{
DebugLogPrint("warning: height of image: %s is not a power of 2\n", aName.ToCharArray());
}
SetTextureSize(Vector3(mSurface->w, mSurface->h, 0));
mNumberOfColors = mSurface->format->BytesPerPixel;
if (mNumberOfColors == 4)
{
if (mSurface->format->Rmask == 0x000000ff)
mTextureFormat = GL_RGBA;
else
#ifndef _WIN32
mTextureFormat = GL_BGRA;
#else
mTextureFormat = GL_RGBA;
#endif
}
else if (mNumberOfColors == 3)
{
if (mSurface->format->Rmask == 0x000000ff)
mTextureFormat = GL_RGB;
else
#ifndef _WIN32
mTextureFormat = GL_BGR;
#else
mTextureFormat = GL_RGB;
#endif
}
else
{
DebugLogPrint("warning: image %s is not truecolor... this will probably break\n", aName.ToCharArray());
DebugLogPrint("warning: bytes per pixel for image %s: %d\n", aName.ToCharArray(), mNumberOfColors);
}
AddTexturePairing(aName);
}
else
{
DebugLogPrint("warning: file: %s not found or incompatible format, check this out\n", aName.ToCharArray());
}
}
/**
* @brief Loads a text surface in font.
* @param aFont Font to use.
* @param aText Text to render.
* @param aForegroundColor Color of the text.
* @param aBackgroundColor Color of the background.
* @param aSize Size of font.
* @param aMaxWidth Max width of a single line (in pixels).
* @return
*/
Vector3 PCShaderSurface::LoadText(HashString const &aFont, HashString const &aText, Vector4 const &aForegroundColor, Vector4 const &aBackgroundColor, int aSize, int aMaxWidth)
{
// Endianness is important here
Uint32 rmask, gmask, bmask, amask;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
rmask = 0xff000000;
gmask = 0x00ff0000;
bmask = 0x0000ff00;
amask = 0x000000ff;
#else
rmask = 0x000000ff;
gmask = 0x0000ff00;
bmask = 0x00ff0000;
amask = 0xff000000;
#endif
HashString const textureDataHash = aFont + aText + Common::IntToString(aSize);
TextureData const& data = GetManager()->GetTextureData(textureDataHash);
if(data.mTextureID != (unsigned)-1)
{
Vector3 size = Vector3(data.mWidth, data.mHeight, 0);
mTextureID = data.mTextureID;
SetTextureSize(size);
return size;
}
else
{
if(!TTF_WasInit())
TTF_Init();
mFont = TTF_OpenFont(Common::RelativePath("Fonts", aFont).c_str(), aSize);
if(!mFont)
{
mFont = NULL;
DebugLogPrint("warning: file not found or incompatible format, check this out\n");
DebugLogPrint("%s", TTF_GetError());
return Vector3(0, 0, 0);
}
// Create text texture
SDL_Color fgColor = {(Uint8)aForegroundColor.x, (Uint8)aForegroundColor.y, (Uint8)aForegroundColor.z, (Uint8)aForegroundColor.w};
//SDL_Color bgColor = {(Uint8)aBackgroundColor.x, (Uint8)aBackgroundColor.y, (Uint8)aBackgroundColor.z, (Uint8)aBackgroundColor.w};
SDL_Surface *msg = TTF_RenderText_Blended_Wrapped(mFont, aText.ToCharArray(), fgColor, aMaxWidth);
if(!msg)
{
DebugLogPrint("TTF_RenderText failed: %s", TTF_GetError());
assert(msg);
}
mTextureFormat = GL_RGBA;
mSurface = SDL_CreateRGBSurface(SDL_SWSURFACE, msg->w, msg->h, 32, rmask, gmask, bmask, amask);
SetTextureSize(Vector3(mSurface->w, mSurface->h, 0));
SDL_BlitSurface(msg, NULL, mSurface, NULL);
AddTexturePairing(textureDataHash);
return Vector3(mSurface->w, mSurface->h, 0);
}
}
// Helpful print functions
void print_matrix(Matrix33 const &_matrix)
{
DebugLogPrint("MATRIX:\n");
for (int i = 0; i < 3; ++i)
{
DebugLogPrint("ROW%d:", i);
for (int j = 0; j < 3; ++j)
{
DebugLogPrint(" %f ", _matrix.values[i][j]);
}
DebugLogPrint("\n");
}
DebugLogPrint("DETERMINANT: %f\n", _matrix.Determinant());
}
/**
* @brief Add object to objects vector.
* @param aObj The object to add
* @param aStatic Is this a static environment object, as in, not designed to be updated?
*/
void ObjectManager::AddObject(GameObject *aObj, bool aStatic)
{
if(aObj == nullptr)
{
DebugLogPrint("Not sure why, but a null object was created. (ObjectManager AddObject)");
}
// Check to see if object is in our list
ObjectIT objectsEnd = mObjects.end();
for(ObjectIT it = mObjects.begin(); it != objectsEnd; ++it)
{
if(*it == aObj)
{
return;
}
}
ObjectIT staticObjectsEnd = mStaticObjects.end();
for(ObjectIT it = mStaticObjects.begin(); it != staticObjectsEnd; ++it)
{
if(*it == aObj)
{
return;
}
}
if(!aStatic)
mObjects.push_back(aObj);
else
mStaticObjects.push_back(aObj);
}
/**
* @brief Print circle info
* @param _circle Circle to print
*/
void print_circle(Circle const &_circle)
{
DebugLogPrint("\n");
DebugLogPrint("-------------------------\n");
DebugLogPrint("RESULTS:\n");
DebugLogPrint("-------------------------\n");
DebugLogPrint("CIRCLE:\n");
DebugLogPrint("POSITION:\n");
print_vector(_circle.position);
DebugLogPrint("UP:\n");
print_vector(_circle.up);
DebugLogPrint("RIGHT:\n");
print_vector(_circle.right);
DebugLogPrint("RADIUS: %f\n", _circle.radius);
}
/**
* @brief Get data of shader based on file name.
* @param aFilename Name of shader file.
* @return Data of shader file. Will assert if file not found.
*/
ShaderData const& GraphicsManager::GetShaderData(HashString const &aFilename) const
{
std::map<HashString, ShaderData>::const_iterator pos = mShaders.find(aFilename);
if(pos == mShaders.end())
{
DebugLogPrint("No shader with name %s found\n", aFilename.ToCharArray());
assert(!"No shader found.");
}
return pos->second;
}
/**
* @brief Interact with another game object
* @param aObject Object to interact with
*/
void GameObject::Interact(GameObject *aObject)
{
DebugLogPrint("%s collided into %s\n", mName.ToCharArray(), aObject->GetName().ToCharArray());
}
/**
* @brief Load shaders.
* @param aVertexShaderFilename Name of vertex shader.
* @param aFragmentShaderFilename Name of fragment shader.
*/
void PCShaderSurface::LoadShaders(HashString const &aVertexShaderFilename, HashString const &aFragmentShaderFilename)
{
mVertexShaderFileName = aVertexShaderFilename;
mFragmentShaderFileName = aFragmentShaderFilename;
HashString shaderKey = aVertexShaderFilename + aFragmentShaderFilename;
if(GetManager()->ShaderDataExists(shaderKey))
{
mProgramID = GetManager()->GetShaderData(shaderKey).mProgramID;
return;
}
std::ifstream vertexFile(Common::RelativePath("Shaders", aVertexShaderFilename.ToCharArray()).c_str());
std::ifstream fragmentFile(Common::RelativePath("Shaders", aFragmentShaderFilename.ToCharArray()).c_str());
if(vertexFile.is_open() && fragmentFile.is_open())
{
GLenum program = glCreateProgram();
GLenum vertexShader = glCreateShader(GL_VERTEX_SHADER);
GLenum fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
GLint didCompile = 0;
GLint isLinked = 0;
HashString vertexFileContents = std::string((std::istreambuf_iterator<char>(vertexFile)), std::istreambuf_iterator<char>());
const char* vertexContents = vertexFileContents.ToCharArray();
// Compile
glShaderSource(vertexShader, 1, &vertexContents, NULL);
glCompileShader(vertexShader);
glGetShaderiv(vertexShader, GL_COMPILE_STATUS, &didCompile);
if(didCompile == GL_FALSE)
{
DebugLogPrint("VERTEX SHADER %s READ:\n%s\n", aVertexShaderFilename.ToCharArray(), vertexContents);
GLint maxLength = 0;
glGetShaderiv(vertexShader, GL_INFO_LOG_LENGTH, &maxLength);
//The maxLength includes the NULL character
std::vector<char> infoLog(maxLength);
glGetShaderInfoLog(vertexShader, maxLength, &maxLength, &infoLog[0]);
DebugLogPrint("GLERROR %s: %s\n", aVertexShaderFilename.ToCharArray(), &infoLog[0]);
//We don't need the shader anymore.
glDeleteShader(vertexShader);
}
HashString fragmentFileContents = std::string((std::istreambuf_iterator<char>(fragmentFile)), std::istreambuf_iterator<char>());
const char* fragmentContents = fragmentFileContents.ToCharArray();
glShaderSource(fragmentShader, 1, &fragmentContents, NULL);
glCompileShader(fragmentShader);
glGetShaderiv(fragmentShader, GL_COMPILE_STATUS, &didCompile);
if(didCompile == GL_FALSE)
{
DebugLogPrint("FRAGMENT SHADER %s READ:\n%s\n", aFragmentShaderFilename.ToCharArray(), fragmentContents);
GLint maxLength = 0;
glGetShaderiv(fragmentShader, GL_INFO_LOG_LENGTH, &maxLength);
//The maxLength includes the NULL character
std::vector<char> infoLog(maxLength);
glGetShaderInfoLog(fragmentShader, maxLength, &maxLength, &infoLog[0]);
DebugLogPrint("GLERROR %s: %s\n", aFragmentShaderFilename.ToCharArray(), &infoLog[0]);
//We don't need the shader anymore.
glDeleteShader(fragmentShader);
}
// Linking
glAttachShader(program, vertexShader);
glAttachShader(program, fragmentShader);
glLinkProgram(program);
glGetProgramiv(program, GL_LINK_STATUS, &isLinked);
if(isLinked == GL_FALSE)
{
GLint maxLength = 0;
glGetProgramiv(program, GL_INFO_LOG_LENGTH, &maxLength);
//The maxLength includes the NULL character
std::vector<GLchar> infoLog(maxLength);
glGetProgramInfoLog(program, maxLength, &maxLength, &infoLog[0]);
//We don't need the program anymore.
glDeleteProgram(program);
//Don't leak shaders either.
glDeleteShader(vertexShader);
glDeleteShader(fragmentShader);
DebugLogPrint("GL LINK ERROR: %s\n", &infoLog[0]);
}
GetManager()->AddShaderPairing(shaderKey, ShaderData(program, vertexShader, fragmentShader, vertexContents, fragmentContents));
mProgramID = program;
}
else
{
DebugLogPrint("No shader with name %s or %s found\n", aVertexShaderFilename.ToCharArray(), aFragmentShaderFilename.ToCharArray());
assert(!"Shader file not found.");
}
}
/**
* @brief Get all possible collisions with another line
* @param aCompare Line to check
* @param aOutput Output circle
* @return If circle is found or not
*/
bool Line::GetCollisions(Line const &aCompare, Circle &aOutput)
{
Vector3 d = aCompare.position - position;
float dist = d.length();
float longer = length >= aCompare.length ? length : aCompare.length;
float shorter = length >= aCompare.length ? aCompare.length : length;
print_line(*this);
print_line(aCompare);
// If they're in the exact same location that would be a problem
if (position == aCompare.position)
{
// IS THIS THE SAME EXACT SPHERE?!
if (length == aCompare.length)
{
aOutput.position = position;
aOutput.radius = length;
aOutput.up = Vector3(0, 1, 0);
aOutput.right = Vector3(0, 0, 1);
DebugLogPrint("Same exact sphere, gonna return false\n\n");
}
else
{
DebugLogPrint("One sphere is inside of another, WAT\n");
DebugLogPrint("Therefore, cannot touch, gonna return false\n\n");
}
print_circle(aOutput);
DebugLogPrint("\n\n");
return false;
}
// > is an early out
if (dist < length + aCompare.length && dist != longer - shorter)
{
// THE IDEA: Find one point, rotate about arbitrary axis between spheres
// Reduce the problem to solving a circle
Vector3 axis = d.normalize();
float xylength = sqrt(axis.x * axis.x + axis.y * axis.y);
float xyzlength = axis.length();
// Don't want to divide by zero
float templength = xylength > 0.0f ? xylength : 1.0f;
// Our matrices
// First, go to xz plane
float xzvalues[3][3] =
{
{ axis.x / templength, axis.y / templength, 0 },
{ -axis.y / templength, axis.x / templength, 0 },
{ 0, 0, 1 } };
// Then, only to z axis
float zvalues[3][3] =
{
{ axis.z / xyzlength, 0, -xylength / xyzlength },
{ 0, 1, 0 },
{ xylength / xyzlength, 0, axis.z / xyzlength } };
// Create identity matrix if we're already on the z plane
if (xylength <= 0.0f)
{
xzvalues[0][0] = 1.0f;
xzvalues[1][1] = 1.0f;
xzvalues[1][0] = 0.0f;
xzvalues[0][1] = 0.0f;
}
// Create our matrices and invert them
Matrix33 xztrans(xzvalues);
Matrix33 ztrans(zvalues);
Matrix33 toZAxis = ztrans * xztrans;
Matrix33 toZAxisInverse = toZAxis.Invert();
Vector3 comparePos = toZAxis * d;
dist = comparePos.length();
// Circle collision function
float z = ((dist * dist) - (aCompare.length * aCompare.length)
+ (length * length)) / (2.0f * dist);
float y = sqrt((length * length) - (z * z));
// Create our circle
aOutput.position = Vector3(0, 0, z);
aOutput.up = Vector3(0, 1, 0);
aOutput.right = Vector3(0, 0, 1);
aOutput.radius = y;
aOutput.position = toZAxisInverse * aOutput.position;
aOutput.position += position;
aOutput.up = toZAxisInverse * aOutput.up;
aOutput.right = toZAxisInverse * aOutput.right;
}
else if (dist == length + aCompare.length)
{
// They barely touch, from the outside
Vector3 largerPos =
length >= aCompare.length ? position : aCompare.position;
Vector3 smallerPos =
length >= aCompare.length ? aCompare.position : position;
float smallerLen = length >= aCompare.length ? aCompare.length : length;
d = smallerPos - largerPos;
DebugLogPrint("The radii barely touch, will still return true, but radius is zero\n");
aOutput.position = smallerPos - (d.normalize() * smallerLen);
aOutput.radius = 0;
aOutput.up = Vector3(0, 1, 0);
aOutput.right = Vector3(0, 0, 1);
}
else if (dist == longer - shorter)
{
// They barely touch, from the inside
Vector3 largerPos =
length >= aCompare.length ? position : aCompare.position;
Vector3 smallerPos =
length >= aCompare.length ? aCompare.position : position;
float smallerLen = length >= aCompare.length ? aCompare.length : length;
d = smallerPos - largerPos;
DebugLogPrint("The radii barely touch, will still return true, but radius is zero\n");
aOutput.position = smallerPos + (d.normalize() * smallerLen);
aOutput.radius = 0;
aOutput.up = Vector3(0, 1, 0);
aOutput.right = Vector3(0, 0, 1);
}
else
{
DebugLogPrint("These LineSegments can never touch. Returning false.\n\n");
return false;
}
print_circle(aOutput);
DebugLogPrint("\n\n");
return true;
}
void print_vector(Vector3 const &_point)
{
DebugLogPrint("VECTOR:\n");
DebugLogPrint("X: %f, Y: %f, Z: %f\n", _point.x, _point.y, _point.z);
}
