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<?php | |
function isNear($c1, $c2) | |
{ | |
$dist = sqrt(pow($c2[0] - $c1[0], 2) + | |
pow($c2[1] - $c1[1], 2)); | |
if ($dist < .001) { | |
return true; | |
} | |
return false; | |
} | |
function getTranslatedCoord($x, $y, $about_x, $about_y, $angle) | |
{ | |
$x -= $about_x; | |
$y -= $about_y; | |
return array($x * cos($angle) - $y * sin($angle) + $about_x, | |
$x * sin($angle) + $y * cos($angle) + $about_y); | |
} | |
function getPossibleCoords($object) | |
{ | |
$type = $object->getType(); | |
$x = $object->getX(); | |
$y = $object->getY(); | |
$a = $object->getAngleRad(); | |
$w = $object->getWidth(); | |
$h = $object->getHeight(); | |
switch ($type) { | |
case FCObject::GOAL_RECT: | |
return array( | |
getTranslatedCoord($x + $w/2, $y + $h/2, $x, $y, $a), | |
getTranslatedCoord($x + $w/2, $y - $h/2, $x, $y, $a), | |
getTranslatedCoord($x - $w/2, $y + $h/2, $x, $y, $a), | |
getTranslatedCoord($x - $w/2, $y - $h/2, $x, $y, $a), | |
); | |
case FCObject::GOAL_CIRCLE: | |
case FCObject::UNPOWERED_WHEEL: | |
case FCObject::CW_WHEEL: | |
case FCObject::CCW_WHEEL: | |
return array( | |
array($x, | |
$y), | |
array($x+cos($a+M_PI/2)*$w/2, | |
$y+sin($a+M_PI/2)*$w/2), | |
array($x+cos($a+M_PI/2)*-$w/2, | |
$y+sin($a+M_PI/2)*-$w/2), | |
array($x+cos($a)*$w/2, | |
$y+sin($a)*$w/2), | |
array($x+cos($a)*-$w/2, | |
$y+sin($a)*-$w/2), | |
); | |
case FCObject::WATER_ROD: | |
case FCObject::WOOD_ROD: | |
return array( | |
array($x+cos($a)*$w/2, | |
$y+sin($a)*$w/2), | |
array($x+cos($a)*-$w/2, | |
$y+sin($a)*-$w/2), | |
); | |
} | |
return array(); | |
} | |
function countUniqueJoints($stage) | |
{ | |
$joint_count = 0; | |
$objects_lookup = array(); | |
$joints = array(); | |
$connections = array(); | |
foreach ($stage->getObjects() as $object) { | |
$joints[$object->getId()] = array(); | |
$objects_lookup[$object->getId()] = $object; | |
} | |
foreach ($stage->getObjects() as $object) { | |
foreach ($object->getJointsList() as $j) { | |
$joints[$object->getId()][] = $j; | |
$joints[$j][] = $object->getId(); | |
} | |
} | |
foreach ($stage->getObjects() as $object) { | |
$id = $object->getId(); | |
foreach ($joints[$id] as $joint_id) { | |
if (!isset($objects_lookup[$joint_id])) { | |
continue; | |
} | |
$target_object = $objects_lookup[$joint_id]; | |
$possible_coords = getPossibleCoords($object); | |
$possible_target_coords = getPossibleCoords($target_object); | |
$coord = null; | |
foreach ($possible_coords as $c1) { | |
foreach ($possible_target_coords as $c2) { | |
if (isNear($c1, $c2)) { | |
$coord = $c1; | |
} | |
} | |
} | |
if ($coord) { | |
$found = false; | |
foreach ($connections as &$conn) { | |
if (isNear($conn[0], $coord)) { | |
$found = true; | |
if (in_array($id, $conn[1]) || | |
in_array($joint_id, $conn[1])) { | |
} else { | |
$joint_count++; | |
} | |
if (!in_array($id, $conn[1])) { | |
$conn[1][] = $id; | |
} | |
if (!in_array($joint_id, $conn[1])) { | |
$conn[1][] = $joint_id; | |
} | |
break; | |
} | |
} | |
if (!$found) { | |
$connections[] = array( | |
$coord, array($id, $joint_id), | |
); | |
$joint_count++; | |
} | |
} | |
} | |
} | |
return $joint_count; | |
} |
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