/**
* Process movement for cardinal (90 degree) and ordinal (45 degree) directions
* If we encounter an obstacle at 90 degrees, stop.
* If we encounter an obstacle at 45 or 135 degrees, slide.
*/
bool MapCollision::move(float &x, float &y, float _step_x, float _step_y, int movement_type, int collide_type) {
// when trying to slide against a bottom or right wall, step_x or step_y can become 0
// this causes diag to become false, making this function return false
// we try to catch such a scenario and return true early
bool force_slide = (_step_x != 0 && _step_y != 0);
while (_step_x != 0 || _step_y != 0) {
float step_x = 0;
if (_step_x > 0) {
// find next interesting value, which is either the whole step, or the transition to the next tile
step_x = std::min(ceilf(x) - x, _step_x);
// if we are standing on the edge of a tile (ceilf(x) - x == 0), we need to look one tile ahead
if (step_x <= MIN_TILE_GAP) step_x = std::min(1.f, _step_x);
}
else if (_step_x < 0) {
step_x = std::max(floorf(x) - x, _step_x);
if (step_x == 0) step_x = std::max(-1.f, _step_x);
}
float step_y = 0;
if (_step_y > 0) {
step_y = std::min(ceilf(y) - y, _step_y);
if (step_y <= MIN_TILE_GAP) step_y = std::min(1.f, _step_y);
}
else if (_step_y < 0) {
step_y = std::max(floorf(y) - y, _step_y);
if (step_y == 0) step_y = std::max(-1.f, _step_y);
}
_step_x -= step_x;
_step_y -= step_y;
if (!smallStep(x, y, step_x, step_y, movement_type, collide_type)) {
if (force_slide) {
if (!smallStepForcedSlideAlongGrid(x, y, step_x, step_y, movement_type, collide_type))
return false;
}
else {
if (!smallStepForcedSlide(x, y, step_x, step_y, movement_type, collide_type))
return false;
}
}
}
return true;
}
void MiniMap::updateMiniMap( Game& game ){
Map &m = game.map;
if( imgMinimap.width() !=width() &&
imgMinimap.height()!=height() ) {
int w = width(), h = height();
imgMinimap = QImage( w, h, QImage::Format_RGB32 );
imgFog = QImage( w, h, QImage::Format_RGB32 );
step = 0;
updateBackground(m);
}
if( game.interactive().size() ){
int countStp = std::min((int)game.interactive().size(), 100);
for(int i=0; i<countStp; ++i){
if( step >= (size_t)game.interactive().size() ){
step = 0;
surface = QPixmap::fromImage( imgMinimap );
update();
updateBackground(m);
}
if( game.interactive().size() )
smallStep(game);
++step;
}
} else {
if( step%2==0 ){
surface = QPixmap::fromImage( imgMinimap );
updateBackground(m);
update();
}
++step;
}
}
