runelite-api: add Experience class for xpForLevel and levelForXp

This commit is contained in:
Adam
2017-05-10 16:15:07 -04:00
parent fe13b29fa4
commit 64f99a909a
2 changed files with 152 additions and 0 deletions

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/*
* Copyright (c) 2017, Adam <Adam@sigterm.info>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package net.runelite.api;
public class Experience
{
/**
* Maximum level under 200m xp
*/
private static final int MAX_VIRT_LEVEL = 126;
private static final int[] XP_FOR_LEVEL = new int[MAX_VIRT_LEVEL];
static
{
int xp = 0;
for (int level = 1; level <= MAX_VIRT_LEVEL; ++level)
{
int difference = (int) ((double) level + 300.0 * Math.pow(2.0, (double) level / 7.0));
xp += difference;
XP_FOR_LEVEL[level - 1] = xp / 4;
}
}
public static int getXpForLevel(int level)
{
if (level < 2 || level > MAX_VIRT_LEVEL)
{
throw new IllegalArgumentException();
}
// XP_FOR_LEVEL[0] is XP for level 2
return XP_FOR_LEVEL[level - 2];
}
public static int getLevelForXp(int xp)
{
if (xp < 0)
{
throw new IllegalArgumentException();
}
int low = 0;
int high = XP_FOR_LEVEL.length - 1;
while (low <= high)
{
int mid = low + (high - low) / 2;
int xpForLevel = XP_FOR_LEVEL[mid];
if (xp < xpForLevel)
{
high = mid - 1;
}
else if (xp > xpForLevel)
{
low = mid + 1;
}
else
{
break;
}
}
return high + 2;
}
}

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/*
* Copyright (c) 2017, Adam <Adam@sigterm.info>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package net.runelite.api;
import org.junit.Assert;
import org.junit.Test;
public class ExperienceTest
{
private static final int XP_FOR_99 = 13_034_431;
@Test
public void testGetXpForLevel()
{
int xp = Experience.getXpForLevel(99);
Assert.assertEquals(XP_FOR_99, xp);
}
@Test
public void testGetLevelForXp()
{
int level;
level = Experience.getLevelForXp(XP_FOR_99);
Assert.assertEquals(99, level);
level = Experience.getLevelForXp(XP_FOR_99 + 1);
Assert.assertEquals(99, level);
level = Experience.getLevelForXp(XP_FOR_99 - 1);
Assert.assertEquals(98, level);
level = Experience.getLevelForXp(0);
Assert.assertEquals(1, level);
level = Experience.getLevelForXp(200_000_000);
Assert.assertEquals(126, level);
}
}