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authorparamat <mat.gregory@virginmedia.com>2015-08-03 04:34:11 +0100
committerparamat <mat.gregory@virginmedia.com>2015-08-03 06:39:23 +0100
commit7a6e4dc54a3eb4187e67a21c4ece60f39bb1d13b (patch)
tree26646570c7adbb988392bb15af1435257e65468a /src/emerge.cpp
parentcf77e0333d1ba0aa81fdce80cd0fa32f137b0a47 (diff)
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Cavegen V6: Make all caves consistent with 0.4.12 stable
When tunnels entirely above ground were avoided, the missing pseudorandom calls changed the allowed caves. Now, above ground tunnels are not placed while still running all previous pseudorandom calls.
Diffstat (limited to 'src/emerge.cpp')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-02 06:31:01 +0000
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 /*
Minetest
Copyright (C) 2010-2014 kwolekr, Ryan Kwolek <kwolekr@minetest.net>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "test.h"

#include "util/numeric.h"
#include "exceptions.h"
#include "noise.h"

class TestRandom : public TestBase {
public:
	TestRandom() { TestManager::registerTestModule(this); }
	const char *getName() { return "TestRandom"; }

	void runTests(IGameDef *gamedef);

	void testPseudoRandom();
	void testPseudoRandomRange();
	void testPcgRandom();
	void testPcgRandomRange();
	void testPcgRandomBytes();
	void testPcgRandomNormalDist();

	static const int expected_pseudorandom_results[256];
	static const u32 expected_pcgrandom_results[256];
	static const u8 expected_pcgrandom_bytes_result[24];
	static const u8 expected_pcgrandom_bytes_result2[24];
};

static TestRandom g_test_instance;

void TestRandom::runTests(IGameDef *gamedef)
{
	TEST(testPseudoRandom);
	TEST(testPseudoRandomRange);
	TEST(testPcgRandom);
	TEST(testPcgRandomRange);
	TEST(testPcgRandomBytes);
	TEST(testPcgRandomNormalDist);
}

////////////////////////////////////////////////////////////////////////////////

void TestRandom::testPseudoRandom()
{
	PseudoRandom pr(814538);

	for (u32 i = 0; i != 256; i++)
		UASSERTEQ(int, pr.next(), expected_pseudorandom_results[i]);
}


void TestRandom::testPseudoRandomRange()
{
	PseudoRandom pr((int)time(NULL));

	EXCEPTION_CHECK(PrngException, pr.range(2000, 6000));
	EXCEPTION_CHECK(PrngException, pr.range(5, 1));

	for (u32 i = 0; i != 32768; i++) {
		int min = (pr.next() % 3000) - 500;
		int max = (pr.next() % 3000) - 500;
		if (min > max)
			SWAP(int, min, max);

		int randval = pr.range(min, max);
		UASSERT(randval >= min);
		UASSERT(randval <= max);
	}
}


void TestRandom::testPcgRandom()
{
	PcgRandom pr(814538, 998877);

	for (u32 i = 0; i != 256; i++)
		UASSERTEQ(u32, pr.next(), expected_pcgrandom_results[i]);
}


void TestRandom::testPcgRandomRange()
{
	PcgRandom pr((int)time(NULL));

	EXCEPTION_CHECK(PrngException, pr.range(5, 1));

	// Regression test for bug 3027
	pr.range(pr.RANDOM_MIN, pr.RANDOM_MAX);