bool entity_collides_with_level(const level& lvl, const entity& e, MOVE_DIRECTION dir, collision_info* info)
{
const solid_info* s = e.solid();
if(!s) {
return false;
}
if(e.face_right() == false) {
if(dir == MOVE_RIGHT) {
dir = MOVE_LEFT;
} else if(dir == MOVE_LEFT) {
dir = MOVE_RIGHT;
}
}
const frame& f = e.current_frame();
const rect& area = s->area();
if(e.face_right()) {
rect solid_area(e.x() + area.x(), e.y() + area.y(), area.w(), area.h());
if(!lvl.may_be_solid_in_rect(solid_area)) {
return false;
}
} else {
rect solid_area(e.x() + f.width() - area.x() - area.w(), e.y() + area.y(), area.w(), area.h());
if(!lvl.may_be_solid_in_rect(solid_area)) {
return false;
}
}
foreach(const const_solid_map_ptr& m, s->solid()) {
if(lvl.solid(e, m->dir(dir), info ? &info->surf_info : NULL)) {
if(info) {
info->read_surf_info();
}
return true;
}
}
return false;
}
bool non_solid_entity_collides_with_level(const level& lvl, const entity& e)
{
const frame& f = e.current_frame();
if(!lvl.may_be_solid_in_rect(rect(e.x(), e.y(), f.width(), f.height()))) {
return false;
}
for(int y = 0; y < f.height(); ++y) {
for(int x = 0; x < f.width(); ++x) {
if(!f.is_alpha(e.face_right() ? x : f.width() - x - 1, y, e.time_in_frame(), true)) {
if(lvl.solid(e.x() + x, e.y() + y)) {
return true;
}
}
}
}
return false;
}
bool non_solid_entity_collides_with_level(const level& lvl, const entity& e)
{
const frame& f = e.current_frame();
if(!lvl.may_be_solid_in_rect(rect(e.x(), e.y(), f.width(), f.height()))) {
return false;
}
const int increment = e.face_right() ? 2 : -2;
for(int y = 0; y < f.height(); y += 2) {
std::vector<bool>::const_iterator i = f.get_alpha_itor(0, y, e.time_in_frame(), e.face_right());
for(int x = 0; x < f.width(); x += 2) {
if(i == f.get_alpha_buf().end() || i == f.get_alpha_buf().begin()) {
continue;
}
if(!*i && lvl.solid(e.x() + x, e.y() + y)) {
return true;
}
i += increment;
}
}
return false;
}
