package net.minecraft.client.renderer.texture;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.client.Minecraft;
import net.minecraft.util.ChunkCoordinates;
import net.minecraft.world.World;
@SideOnly(Side.CLIENT)
public class TextureCompass extends TextureStitched
{
public static TextureCompass compassTexture;
/** Current compass heading in radians */
public double currentAngle;
/** Speed and direction of compass rotation */
public double angleDelta;
public TextureCompass()
{
super("compass");
compassTexture = this;
}
public void updateAnimation()
{
Minecraft minecraft = Minecraft.getMinecraft();
if (minecraft.theWorld != null && minecraft.thePlayer != null)
{
this.updateCompass(minecraft.theWorld, minecraft.thePlayer.posX, minecraft.thePlayer.posZ, (double)minecraft.thePlayer.rotationYaw, false, false);
}
else
{
this.updateCompass((World)null, 0.0D, 0.0D, 0.0D, true, false);
}
}
/**
* Updates the compass based on the given x,z coords and camera direction
*/
public void updateCompass(World par1World, double par2, double par4, double par6, boolean par8, boolean par9)
{
double d3 = 0.0D;
if (par1World != null && !par8)
{
ChunkCoordinates chunkcoordinates = par1World.getSpawnPoint();
double d4 = (double)chunkcoordinates.posX - par2;
double d5 = (double)chunkcoordinates.posZ - par4;
par6 %= 360.0D;
d3 = -((par6 - 90.0D) * Math.PI / 180.0D - Math.atan2(d5, d4));
if (!par1World.provider.isSurfaceWorld())
{
d3 = Math.random() * Math.PI * 2.0D;
}
}
if (par9)
{
this.currentAngle = d3;
}
else
{
double d6;
for (d6 = d3 - this.currentAngle; d6 < -Math.PI; d6 += (Math.PI * 2D))
{
;
}
while (d6 >= Math.PI)
{
d6 -= (Math.PI * 2D);
}
if (d6 < -1.0D)
{
d6 = -1.0D;
}
if (d6 > 1.0D)
{
d6 = 1.0D;
}
this.angleDelta += d6 * 0.1D;
this.angleDelta *= 0.8D;
this.currentAngle += this.angleDelta;
}
int i;
for (i = (int)((this.currentAngle / (Math.PI * 2D) + 1.0D) * (double)this.textureList.size()) % this.textureList.size(); i < 0; i = (i + this.textureList.size()) % this.textureList.size())
{
;
}
if (i != this.frameCounter)
{
this.frameCounter = i;
this.textureSheet.copyFrom(this.originX, this.originY, (Texture)this.textureList.get(this.frameCounter), false); //FML: We rotate the textures in init.
}
}
}