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Use TrigMath in hotspots

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Use our implementation of atan2 in AI routines as profiling shows these are
hotspots and (for these cases) our implementation is much faster.
This commit is contained in:
Travis Watkins 2012-08-15 05:15:36 -05:00
parent 8219081385
commit 7b20caf8fe
3 changed files with 14 additions and 5 deletions
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8
src/main/java/net/minecraft/server/ControllerLook.java
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@ -1,5 +1,7 @@
package net.minecraft.server; package net.minecraft.server;
import org.bukkit.craftbukkit.TrigMath; // CraftBukkit
public class ControllerLook { public class ControllerLook {
private EntityLiving a; private EntityLiving a;
@ -45,8 +47,10 @@ public class ControllerLook {
double d1 = this.f - (this.a.locY + (double) this.a.getHeadHeight()); double d1 = this.f - (this.a.locY + (double) this.a.getHeadHeight());
double d2 = this.g - this.a.locZ; double d2 = this.g - this.a.locZ;
double d3 = (double) MathHelper.sqrt(d0 * d0 + d2 * d2); double d3 = (double) MathHelper.sqrt(d0 * d0 + d2 * d2);
float f = (float) (Math.atan2(d2, d0) * 180.0D / 3.1415927410125732D) - 90.0F; // CraftBukkit start - Math -> TrigMath
float f1 = (float) (-(Math.atan2(d1, d3) * 180.0D / 3.1415927410125732D)); float f = (float) (TrigMath.atan2(d2, d0) * 180.0D / 3.1415927410125732D) - 90.0F;
float f1 = (float) (-(TrigMath.atan2(d1, d3) * 180.0D / 3.1415927410125732D));
// CraftBukkit end
this.a.pitch = this.a(this.a.pitch, f1, this.c); this.a.pitch = this.a(this.a.pitch, f1, this.c);
this.a.as = this.a(this.a.as, f, this.b); this.a.as = this.a(this.a.as, f, this.b);

3
src/main/java/net/minecraft/server/ControllerMove.java
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@ -43,7 +43,8 @@ public class ControllerMove {
double d3 = d0 * d0 + d2 * d2 + d1 * d1; double d3 = d0 * d0 + d2 * d2 + d1 * d1;
if (d3 >= 2.500000277905201E-7D) { if (d3 >= 2.500000277905201E-7D) {
float f = (float) (Math.atan2(d1, d0) * 180.0D / 3.1415927410125732D) - 90.0F; // CraftBukkit - Math -> TrigMath
float f = (float) (org.bukkit.craftbukkit.TrigMath.atan2(d1, d0) * 180.0D / 3.1415927410125732D) - 90.0F;
this.a.yaw = this.a(this.a.yaw, f, 30.0F); this.a.yaw = this.a(this.a.yaw, f, 30.0F);
this.a.e(this.e); this.a.e(this.e);

8
src/main/java/net/minecraft/server/EntitySquid.java
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@ -1,5 +1,7 @@
package net.minecraft.server; package net.minecraft.server;
import org.bukkit.craftbukkit.TrigMath; // CraftBukkit
public class EntitySquid extends EntityWaterAnimal { public class EntitySquid extends EntityWaterAnimal {
public float d = 0.0F; public float d = 0.0F;
@ -104,10 +106,12 @@ public class EntitySquid extends EntityWaterAnimal {
} }
f = MathHelper.sqrt(this.motX * this.motX + this.motZ * this.motZ); f = MathHelper.sqrt(this.motX * this.motX + this.motZ * this.motZ);
this.aq += (-((float) Math.atan2(this.motX, this.motZ)) * 180.0F / 3.1415927F - this.aq) * 0.1F; // CraftBukkit - Math -> TrigMath
this.aq += (-((float) TrigMath.atan2(this.motX, this.motZ)) * 180.0F / 3.1415927F - this.aq) * 0.1F;
this.yaw = this.aq; this.yaw = this.aq;
this.f += 3.1415927F * this.bB * 1.5F; this.f += 3.1415927F * this.bB * 1.5F;
this.d += (-((float) Math.atan2((double) f, this.motY)) * 180.0F / 3.1415927F - this.d) * 0.1F; // CraftBukkit - Math -> TrigMath
this.d += (-((float) TrigMath.atan2((double) f, this.motY)) * 180.0F / 3.1415927F - this.d) * 0.1F;
} else { } else {
this.j = MathHelper.abs(MathHelper.sin(this.h)) * 3.1415927F * 0.25F; this.j = MathHelper.abs(MathHelper.sin(this.h)) * 3.1415927F * 0.25F;
if (!this.world.isStatic) { if (!this.world.isStatic) {