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Encode cursor hotspots into GIF comments

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Celtic Minstrel
2015-08-21 14:27:39 -04:00
parent 95559b5a51
commit c0c3093140
27 changed files with 49 additions and 28 deletions
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67
src/tools/resmgr/restypes.hpp
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@@ -42,43 +42,54 @@ namespace ResMgr {
}
/// Load a cursor from a GIF file.
/// The cursor's hotspot location is stored in a .hot file, as plaintext:
/// simply the X value followed by the Y value, separated by whitespace.
/// The cursor's hotspot location is stored in a GIF comment, with the following syntax (case-sensitive):
/// "Hotspot(x,y)"
template<> inline CursorRsrc* resLoader<CursorRsrc>::operator() (std::string fname) {
// TODO: Store the hotspots on disk instead of hardcoded here
static const std::map<std::string,location> cursor_hs = {
{"wand", {4, 1}}, {"eyedropper", {1, 14}}, {"brush", {5, 13}}, {"spraycan", {8, 8}},
{"eraser", {8, 8}}, {"topleft", {8, 8}}, {"bottomright", {8, 8}}, {"hand", {14, 0}},
{"NW", {3, 3}}, {"N", {9, 3}}, {"NE", {12, 3}},
{"W", {2, 7}}, {"wait", {8, 8}}, {"E", {14, 7}},
{"SW", {3, 12}}, {"S", {9, 12}}, {"SE", {12, 12}},
{"sword", {1, 1}}, {"boot", {2, 6}}, {"drop", {14, 0}}, {"target", {8, 8}},
{"talk", {2, 13}}, {"key", {3, 2}}, {"look", {7, 6}}, {"watch", {8,8}},
};
fs::path fpath = resPool<CursorRsrc>::rel2abs(fname + ".gif");
fs::path hotpath = resPool<CursorRsrc>::rel2abs(fname + ".hot");
int x = 0, y = 0;
if(fs::exists(hotpath)) {
std::ifstream fin(hotpath.c_str());
fin >> x >> y;
fin.close();
} else {
auto entry = cursor_hs.find(fname);
if(entry == cursor_hs.end())
std::cerr << "Cursor hotspot missing: " << fname << std::endl;
else {
std::cerr << "Cursor hotspot missing (using fallback value): " << fname << std::endl;
location hs = entry->second;
x = hs.x; y = hs.y;
if(!fs::exists(fpath))
throw xResMgrErr("Failed to load GIF cursor: " + fname);
int x = 0, y = 0, f_sz;
std::ifstream fin(fpath.c_str(), std::ios::binary);
fin.seekg(0, std::ios::end);
f_sz = fin.tellg();
fin.clear();
fin.seekg(0, std::ios::beg);
bool found_hotspot = false;
while(fin && !found_hotspot) {
unsigned char c = fin.get();
if(c != 0x21) continue;
c = fin.get();
if(c != 0xfe) continue;
// If we get here, we've probably found a GIF comment
std::string str;
int count;
found_hotspot = true;
do {
count = fin.get();
if(count + fin.tellg() >= f_sz) {
found_hotspot = false;
break;
}
std::copy_n(std::istream_iterator<std::string::value_type>(fin), count, std::back_inserter(str));
} while(count > 0);
if(found_hotspot) {
if(str.substr(0,7) == "Hotspot") {
size_t open_paren = str.find_first_of('('), comma = str.find_first_of(','), close_paren = str.find_first_of(')');
std::string x_str = str.substr(open_paren + 1, comma - open_paren - 1);
std::string y_str = str.substr(comma + 1, close_paren - comma - 1);
x = std::stoi(x_str);
y = std::stoi(y_str);
} else found_hotspot = false;
}
}
if(!found_hotspot)
std::cerr << "Cursor hotspot missing: " << fname << std::endl;
// TODO: Handle errors?
CursorRsrc* cur = new Cursor(fpath.string(),x,y);
return cur;
throw xResMgrErr("Failed to load GIF cursor: " + fname);
}
/// Load a font form a TTF file.
/// Load a font from a TTF file.
template<> inline FontRsrc* resLoader<FontRsrc>::operator() (std::string fname) {
fs::path fpath = resPool<FontRsrc>::rel2abs(fname + ".ttf");
FontRsrc* theFont = new FontRsrc;