inline bool from_script( const char* _v )
{
if ( _v ) {
allStatesStr_ = "";
itemStatesStr_ = "";
std::size_t vLen( ::strlen( _v ) );
/// NOTE: there is a memory leak and crash here when using QString
/// on Windows, a hand-made loop to copy the states seems
/// could avoid crashing.
std::size_t idx( 0 );
while ( idx < vLen ) {
if ( _v[ idx ] == ',' ) {
++idx;
break;
}
if ( _v[ idx ] == '0' || _v[ idx ] == '1' ) {
allStatesStr_.push_back( _v[ idx ] );
}
++idx;
}
while ( idx < vLen ) {
if ( _v[ idx ] == ']' ) {
++idx;
break;
}
if ( _v[ idx ] == '0' || _v[ idx ] == '1' ) {
itemStatesStr_.push_back( _v[ idx ] );
}
++idx;
}
return true;
}
return false;
}
/***********************************************************************
* BasicAI
* update
***********************************************************************/
void fired::BasicAI::update() {
if (target) if (target->dead) target = NULL;
selectTarget();
if (!target) return;
owner->character->setAiming(atan2(target->phys.center.y - owner->character->phys.center.y,
target->phys.center.x - owner->character->phys.center.x));
owner->character->phys.jumpdown = false;
if (target->phys.center.x < owner->character->phys.center.x)
owner->character->moveLeft();
else
owner->character->moveRight();
if (target->phys.center.y < owner->character->phys.center.y - 32)
owner->character->jump();
else if (target->phys.center.y > owner->character->phys.center.y + 32)
owner->character->jumpdown();
if (vLen(owner->character->phys.center - target->phys.center) < owner->character->phys.size.x / 2 + owner->character->getRange()) {
owner->character->shot();
owner->character->unshot();
}
}
/***********************************************************************
* BasicAI
* selectTarget
***********************************************************************/
void fired::BasicAI::selectTarget() {
float minDist, dist;
minDist = -1;
for (unsigned int i = 0; i < world->chars.size(); i++) {
if (world->chars[i]->dead) continue;
if (owner->character->isEnemy(world->chars[i]->fraction)) {
dist = vLen(owner->character->phys.center - world->chars[i]->phys.center);
if (dist > owner->character->stats.aimrange) continue;
if (target && dist > owner->character->stats.aimrange * 0.66f) continue;
if (minDist == -1) {
minDist = dist;
target = world->chars[i];
} else if (dist < minDist) {
minDist = dist;
target = world->chars[i];
}
}
}
}
/***********************************************************************
* vNorm
***********************************************************************/
sf::Vector2f vNorm(sf::Vector2f v) {
return v / vLen(v);
}
/***********************************************************************
Fast Ray-Box Intersection
by Andrew Woo
from "Graphics Gems", Academic Press, 1990
***********************************************************************/
bool lineBoxCollision(sf::FloatRect box, sf::FloatRect ray, sf::Vector2f *coord, sf::Vector2f *normal, float *dist)
{
bool inside = true;
sf::Vector2i quadrant;
int whichPlane;
sf::Vector2f maxT;
sf::Vector2f candidatePlane;
if(ray.left < box.left) {
quadrant.x = LEFT;
candidatePlane.x = box.left;
inside = false;
} else if (ray.left > box.left + box.width) {
quadrant.x = RIGHT;
candidatePlane.x = box.left + box.width;
inside = false;
} else {
quadrant.x = MIDDLE;
}
if(ray.top < box.top) {
quadrant.y = LEFT;
candidatePlane.y = box.top;
inside = false;
} else if (ray.top > box.top + box.height) {
quadrant.y = RIGHT;
candidatePlane.y = box.top + box.height;
inside = false;
} else {
quadrant.y = MIDDLE;
}
if(inside) {
*coord = sf::Vector2f(ray.left, ray.top);
return true;
}
if (quadrant.x != MIDDLE && ray.width !=0.)
maxT.x = (candidatePlane.x - ray.left) / ray.width;
else
maxT.x = -1.;
if (quadrant.y != MIDDLE && ray.height !=0.)
maxT.y = (candidatePlane.y - ray.top) / ray.height;
else
maxT.y = -1.;
whichPlane = 0;
if (maxT.x < maxT.y)
whichPlane = 1;
if (whichPlane == 0) {
if (maxT.x < 0.) return false;
} else {
if (maxT.y < 0.) return false;
}
if (whichPlane == 0) {
coord->x = candidatePlane.x;
coord->y = ray.top + maxT.x * ray.height;
normal->x = quadrant.x;
normal->y = 0;
if (coord->y < box.top || coord->y > (box.top + box.height)) return false;
} else {
coord->x = ray.left + maxT.y * ray.width;
coord->y = candidatePlane.y;
normal->x = 0;
normal->y = quadrant.y;
if (coord->x < box.left || coord->x > (box.left + box.width)) return false;
}
if (dist) {
*dist = vLen(sf::Vector2f(coord->x - ray.left, coord->y - ray.top));
if (*dist > vLen(sf::Vector2f(ray.width, ray.height))) return false;
}
return true;
}
/*
* Normalize vector <v_in> (scale it so its length becomes 1) and put the result
* into <v_out>.
*/
void vNorm(Vector *v_out, Vector *v_in)
{
double len = vLen(v_in);
vScale(v_out, v_in, 1 / len);
}