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#include <Stage.hpp>
using namespace sf;
using namespace std;
int
Stage::load(const std::string& fileName)
{
ifstream stageFile(fileName);
if (!stageFile) {
return EXIT_FAILURE;
}
auto until = numeric_limits<streamsize>::max();
while (!stageFile.eof()) {
stageFile.ignore(until, '<');
string command;
getline(stageFile, command, '>');
if (command == "WALL") {
_walls.emplace_back(LinesStrip);
hn::Vector<b2Vec2> vertices;
stageFile.ignore(until, '<');
while (stageFile.peek() != '/') {
Vector2f vtxPos;
stageFile >> vtxPos.x;
stageFile.ignore(until, ',');
stageFile >> vtxPos.y;
stageFile.ignore(until, '<');
_walls.back().append({ vtxPos, WALL_COLOR });
vertices.emplace_back(vtxPos.x, vtxPos.y);
}
b2ChainShape shape;
shape.CreateChain(vertices.data(), vertices.size());
b2BodyDef bodyDef;
_wallBodies.emplace_back(_world.CreateBody(&bodyDef));
_wallBodies.back()->CreateFixture(&shape, 0.0f);
} else if (command == "FACTORY") {
Vector2f factPos;
double factRot = 0.0;
stageFile.ignore(until, '<');
stageFile >> factPos.x;
stageFile.ignore(until, ',');
stageFile >> factPos.y;
stageFile.ignore(until, ',');
stageFile >> factRot;
stageFile.ignore(until, '<');
_factory.setPosition(factPos);
_factory.setRotation(factRot);
_factory.setOrigin(AGENT_RAD + 2, AGENT_RAD + 2);
_factory.setFillColor(Color::Black);
_factory.setOutlineColor(FACTORY_COLOR);
_factory.setOutlineThickness(2.0f);
} else if (command == "CHECKPOINT") {
stageFile.ignore(until, '<');
while (stageFile.peek() != '/') {
_checkPoints.emplace_back();
Vector2f vtx1Pos;
Vector2f vtx2Pos;
b2Vec2 shVx[2];
stageFile >> vtx1Pos.x;
shVx[0].x = vtx1Pos.x;
stageFile.ignore(until, ',');
stageFile >> vtx1Pos.y;
shVx[0].y = vtx1Pos.y;
stageFile.ignore(until, ',');
stageFile >> vtx2Pos.x;
shVx[1].x = vtx2Pos.x;
stageFile.ignore(until, ',');
stageFile >> vtx2Pos.y;
shVx[1].y = vtx2Pos.y;
stageFile.ignore(until, ',');
stageFile >> _checkPoints.back()._value;
stageFile.ignore(until, '<');
_checkPoints.back()._line.append({ vtx1Pos, CHECKPNT_COLOR });
_checkPoints.back()._line.append({ vtx2Pos, CHECKPNT_COLOR });
_checkPoints.front().calculateSegment(_checkPoints.back());
b2ChainShape cpShape;
cpShape.CreateChain(shVx, 2);
b2FixtureDef cpFixture;
cpFixture.shape = &cpShape;
cpFixture.isSensor = true;
b2BodyDef cpDef;
_checkPoints.back()._body = _world.CreateBody(&cpDef);
_checkPoints.back()._body->CreateFixture(&cpFixture);
if (_checkPoints.size() > 1) {
auto& prev = _checkPoints[_checkPoints.size() - 2];
_checkPoints.back().calculateSegment(prev);
}
}
for (auto & i : _checkPoints) {
i._body->GetFixtureList()->SetUserData(&i);
}
} else if (command == "TRAP") {
stageFile.ignore(until, '<');
while (stageFile.peek() != '/') {
sf::Vector2f v1;
sf::Vector2f v2;
stageFile >> v1.x;
stageFile.ignore(until, ',');
stageFile >> v1.y;
stageFile.ignore(until, ',');
stageFile >> v2.x;
stageFile.ignore(until, ',');
stageFile >> v2.y;
stageFile.ignore(until, '<');
_trapRects.emplace_back(sf::Vector2f(v2.x - v1.x, v2.y - v1.y));
_trapRects.back().setPosition(v1);
_trapRects.back().setFillColor({ 128, 32, 32, 128 });
_traps.emplace_back();
_traps.back().lowerBound.Set(v1.x, v1.y);
_traps.back().upperBound.Set(v2.x, v2.y);
}
}
}
_world.SetContactListener(&_listener);
_listener._stage = this;
return EXIT_SUCCESS;
}
void
Stage::update()
{
_world.Step(_TIME_STEP, _VEL_ITERS, _POS_ITERS);
}
void
Stage::drawOn(RenderWindow& surface) const
{
for (auto& i : _trapRects) {
surface.draw(i);
}
for (auto& i : _walls) {
surface.draw(i);
}
surface.draw(_factory);
for (auto& i : _checkPoints) {
surface.draw(i._line);
}
}
void
Stage::CheckPoint::calculateSegment(const CheckPoint& prev)
{
float32 a0X = prev._line[0].position.x;
float32 a0Y = prev._line[0].position.y;
float32 a1X = prev._line[1].position.x;
float32 a1Y = prev._line[1].position.y;
float32 b0X = _line[0].position.x;
float32 b0Y = _line[0].position.y;
float32 b1X = _line[1].position.x;
float32 b1Y = _line[1].position.y;
float32 dA0B0 = dist( { a0X, a0Y }, { b0X, b0Y });
float32 dA0B1 = dist( { a0X, a0Y }, { b1X, b1Y });
float32 dA1B0 = dist( { a1X, a1Y }, { b0X, b0Y });
float32 dA1B1 = dist( { a1X, a1Y }, { b1X, b1Y });
_segment = min(min(dA0B0, dA0B1), min(dA1B0, dA1B1));
}
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