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Graphics.cpp
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Graphics.cpp
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#include "Include/Graphics.h"
LTexture::LTexture()
{
//Initialize
mTexture = NULL;
mWidth = 0;
mHeight = 0;
}
LTexture::~LTexture()
{
//Deallocate
free();
}
bool LTexture::loadFromFile(std::string path)
{
//Get rid of preexisting texture
free();
//The final texture
SDL_Texture* newTexture = NULL;
//Load image at specified path
SDL_Surface* loadedSurface = IMG_Load(path.c_str());
if (loadedSurface == NULL)
{
printf("Unable to load image %s! SDL_image Error: %s\n", path.c_str(), IMG_GetError());
}
else
{
//Color key image
SDL_SetColorKey(loadedSurface, SDL_TRUE, SDL_MapRGB(loadedSurface->format, 0, 0xFF, 0xFF));
//Create texture from surface pixels
newTexture = SDL_CreateTextureFromSurface(gRenderer, loadedSurface);
if (newTexture == NULL)
{
printf("Unable to create texture from %s! SDL Error: %s\n", path.c_str(), SDL_GetError());
}
else
{
//Get image dimensions
mWidth = loadedSurface->w;
mHeight = loadedSurface->h;
}
//Get rid of old loaded surface
SDL_FreeSurface(loadedSurface);
}
//Return success
mTexture = newTexture;
return mTexture != NULL;
}
bool LTexture::loadFromRenderedText(std::string textureText, TTF_Font* font, SDL_Color textColor)
{
//Get rid of preexisting texture
free();
//Render text surface
SDL_Surface* textSurface = TTF_RenderText_Solid(font, textureText.c_str(), textColor);
if (textSurface != NULL)
{
//Create texture from surface pixels
mTexture = SDL_CreateTextureFromSurface(gRenderer, textSurface);
if (mTexture == NULL)
{
printf("Unable to create texture from rendered text! SDL Error: %s\n", SDL_GetError());
}
else
{
//Get image dimensions
mWidth = textSurface->w;
mHeight = textSurface->h;
}
//Get rid of old surface
SDL_FreeSurface(textSurface);
}
else
{
printf("Unable to render text surface! SDL_ttf Error: %s\n", TTF_GetError());
}
//Return success
return mTexture != NULL;
}
void LTexture::free()
{
//Free texture if it exists
if (mTexture != NULL)
{
SDL_DestroyTexture(mTexture);
mTexture = NULL;
mWidth = 0;
mHeight = 0;
}
}
void LTexture::setColor(Uint8 red, Uint8 green, Uint8 blue)
{
//Modulate texture rgb
SDL_SetTextureColorMod(mTexture, red, green, blue);
}
void LTexture::setColor(Uint8 red, Uint8 green, Uint8 blue, Uint8 alpha)
{
//Modulate texture rgb
SDL_SetTextureColorMod(mTexture, red, green, blue);
SDL_SetTextureAlphaMod(mTexture, alpha);
}
void LTexture::setBlendMode(SDL_BlendMode blending)
{
//Set blending function
SDL_SetTextureBlendMode(mTexture, blending);
}
void LTexture::setAlpha(Uint8 alpha)
{
//Modulate texture alpha
SDL_SetTextureAlphaMod(mTexture, alpha);
}
SDL_Texture* LTexture::getSDLTexture()
{
return mTexture;
}
void LTexture::render(int x, int y, int w, int h, SDL_Rect* clip, double angle, SDL_Point* center, SDL_RendererFlip flip)
{
//Set rendering space and render to screen
SDL_Rect renderQuad = { x, y, w, h };
//Set clip rendering dimensions
if (clip != NULL)
{
renderQuad.w = clip->w * 0.5;
renderQuad.h = clip->h * 0.5;
}
//Render to screen
SDL_RenderCopyEx(gRenderer, mTexture, clip, &renderQuad, angle, center, flip);
}
void LTexture::render(SDL_Rect& camera, int x, int y, int w, int h, SDL_Rect* clip, double angle, SDL_Point* center, SDL_RendererFlip flip)
{
//Set rendering space and render to screen
SDL_Rect renderQuad = { x - camera.x, y - camera.y, w, h };
//Set clip rendering dimensions
if (clip != NULL)
{
renderQuad.w = clip->w;// *0.5;
renderQuad.h = clip->h;// *0.5;
}
//Render to screen
SDL_RenderCopyEx(gRenderer, mTexture, clip, &renderQuad, angle, center, flip);
}
int LTexture::getWidth()
{
return mWidth;
}
int LTexture::getHeight()
{
return mHeight;
}
int drawText(int x, int y, TTF_Font* font, SDL_Color color, std::string text, int anchorMode)
{
int textWidth;
SDL_Surface* surfaceMessage = TTF_RenderText_Blended(font, text.c_str(), color);
// render the text surface
if (surfaceMessage == NULL)
{
printf("surfaceMessage could not be created! SDL Error: %s\n", TTF_GetError());
}
else
{
SDL_Texture* Message = SDL_CreateTextureFromSurface(gRenderer, surfaceMessage);
if (Message == NULL)
{
printf("Unable to create texture from rendered text! SDL Error: %s\n", SDL_GetError());
}
else {
SDL_Rect Message_rect;
Message_rect.w = surfaceMessage->w;
Message_rect.h = surfaceMessage->h;
textWidth = Message_rect.w;
//set a ancher point for the x and y
switch (anchorMode)
{
case 0: //top left
Message_rect.x = x;
Message_rect.y = y;
break;
case 1: //top mid
Message_rect.x = x - (Message_rect.w / 2);
Message_rect.y = y;
break;
case 2: //top right
Message_rect.x = x - Message_rect.w;
Message_rect.y = y;
break;
}
//draw text
SDL_RenderCopy(gRenderer, Message, NULL, &Message_rect);
//free surface and texture
SDL_FreeSurface(surfaceMessage);
SDL_DestroyTexture(Message);
//return the width of the text
return textWidth;
}
}
return 0;
}