You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
1.9 KiB
75 lines
1.9 KiB
2 years ago
|
#include "crawl.hpp"
|
||
|
|
|
||
|
|
#include <type_traits>
|
||
|
|
|
||
|
|
#include <function_ref.hpp>
|
||
|
|
|
||
|
|
#include "engine/displacement.hpp"
|
||
|
|
|
||
|
|
namespace devilution {
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
bool CrawlFlipsX(Displacement mirrored, tl::function_ref<bool(Displacement)> function)
|
||
|
|
{
|
||
|
|
for (const Displacement displacement : { mirrored.flipX(), mirrored }) {
|
||
|
|
if (!function(displacement))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool CrawlFlipsY(Displacement mirrored, tl::function_ref<bool(Displacement)> function)
|
||
|
|
{
|
||
|
|
for (const Displacement displacement : { mirrored, mirrored.flipY() }) {
|
||
|
|
if (!function(displacement))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool CrawlFlipsXY(Displacement mirrored, tl::function_ref<bool(Displacement)> function)
|
||
|
|
{
|
||
|
|
for (const Displacement displacement : { mirrored.flipX(), mirrored, mirrored.flipXY(), mirrored.flipY() }) {
|
||
|
|
if (!function(displacement))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace
|
||
|
|
|
||
|
|
bool DoCrawl(unsigned radius, tl::function_ref<bool(Displacement)> function)
|
||
|
|
{
|
||
|
|
if (radius == 0)
|
||
|
|
return function(Displacement { 0, 0 });
|
||
|
|
|
||
|
|
if (!CrawlFlipsY({ 0, static_cast<int>(radius) }, function))
|
||
|
|
return false;
|
||
|
|
for (unsigned i = 1; i < radius; i++) {
|
||
|
|
if (!CrawlFlipsXY({ static_cast<int>(i), static_cast<int>(radius) }, function))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (radius > 1) {
|
||
|
|
if (!CrawlFlipsXY({ static_cast<int>(radius) - 1, static_cast<int>(radius) - 1 }, function))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (!CrawlFlipsX({ static_cast<int>(radius), 0 }, function))
|
||
|
|
return false;
|
||
|
|
for (unsigned i = 1; i < radius; i++) {
|
||
|
|
if (!CrawlFlipsXY({ static_cast<int>(radius), static_cast<int>(i) }, function))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool DoCrawl(unsigned minRadius, unsigned maxRadius, tl::function_ref<bool(Displacement)> function)
|
||
|
|
{
|
||
|
|
for (unsigned i = minRadius; i <= maxRadius; i++) {
|
||
|
|
if (!DoCrawl(i, function))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace devilution
|