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/* ----------------------------------------------------------------------------
* spritesheet.cpp
*
* Copyright (c) 2017 Yann Herklotz Grave <ymherklotz@gmail.com>
* MIT License, see LICENSE file for more details.
* ----------------------------------------------------------------------------
*/
#include "spritesheet.h"
#include <cassert>
#include <fstream>
#include <sstream>
#include <stdexcept>
#include <rapidjson/reader.h>
#include <yage/base/imageloader.h>
using namespace std;
using namespace rapidjson;
using namespace yage::details;
namespace yage
{
namespace details
{
bool SpriteSheetHandler::Null()
{
return true;
}
bool SpriteSheetHandler::Bool(bool)
{
return true;
}
bool SpriteSheetHandler::Int(int i)
{
return handleNumber(i);
}
bool SpriteSheetHandler::Uint(unsigned u)
{
return handleNumber(static_cast<int>(u));
}
bool SpriteSheetHandler::Int64(int64_t i)
{
return handleNumber(static_cast<int>(i));
}
bool SpriteSheetHandler::Uint64(uint64_t u)
{
return handleNumber(static_cast<int>(u));
}
bool SpriteSheetHandler::Double(double d)
{
return handleNumber(static_cast<int>(d));
}
bool SpriteSheetHandler::String(const char *, SizeType, bool)
{
return true;
}
bool SpriteSheetHandler::Key(const char *str, SizeType length, bool)
{
current_key_ = string(str, length);
return true;
}
bool SpriteSheetHandler::StartObject()
{
depth_++;
if (depth_ == 3) {
current_image_ = current_key_;
}
return true;
}
bool SpriteSheetHandler::EndObject(SizeType)
{
if (depth_ == 3) {
map_[current_image_] = coord_;
}
depth_--;
return true;
}
bool SpriteSheetHandler::StartArray()
{
return true;
}
bool SpriteSheetHandler::EndArray(SizeType)
{
return true;
}
SpriteMap SpriteSheetHandler::spriteMap() const
{
return map_;
}
int SpriteSheetHandler::imageWidth() const
{
return image_width_;
}
int SpriteSheetHandler::imageHeight() const
{
return image_height_;
}
bool SpriteSheetHandler::handleNumber(int i)
{
if (current_key_ == "width") {
if (depth_ == 1) {
image_width_ = i;
} else {
coord_.width = i;
}
} else if (current_key_ == "height") {
if (depth_ == 1) {
image_height_ = i;
} else {
coord_.height = i;
}
} else if (current_key_ == "x") {
coord_.x = i;
} else if (current_key_ == "y") {
coord_.y = i;
}
return true;
}
} // namespace details
SpriteSheet::SpriteSheet(string pngFileName, string jsonFileName)
{
string fileContents = fileContent(jsonFileName);
SpriteSheetHandler ssHandler;
Reader reader;
StringStream ss(fileContents.c_str());
reader.Parse(ss, ssHandler);
fileLocations_ = ssHandler.spriteMap();
texture_ = ImageLoader::loadPng(pngFileName);
if (texture_.width != ssHandler.imageWidth())
throw runtime_error("Texture width not equal: " +
to_string(texture_.width) +
" != " + to_string(ssHandler.imageWidth()));
if (texture_.height != ssHandler.imageHeight())
throw runtime_error(
"Texture height not equal: " + to_string(texture_.height) +
" != " + to_string(ssHandler.imageHeight()));
assert(texture_.height == ssHandler.imageHeight());
}
string SpriteSheet::fileContent(string jsonFileName) const
{
ifstream inputFile(jsonFileName);
stringstream stream;
stream << inputFile.rdbuf();
return stream.str();
}
} // namespace yage
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