Added CameraSetup sub-event for camera angles

Allows players to alter yaw and pitch of renderViewEntity, but more importantly, adds the ability to roll the view.

Added camera roll hook

patches/minecraft/net/minecraft/client/renderer/EntityRenderer.java.patch

@@ -25,7 +25,35 @@
                  GlStateManager.func_179114_b(entity.field_70126_B + (entity.field_70177_z - entity.field_70126_B) * p_78467_1_ + 180.0F, 0.0F, -1.0F, 0.0F);
                  GlStateManager.func_179114_b(entity.field_70127_C + (entity.field_70125_A - entity.field_70127_C) * p_78467_1_, -1.0F, 0.0F, 0.0F);
              }
-@@ -1081,7 +1075,7 @@
+@@ -630,17 +624,20 @@
+ 
+         if (!this.field_78531_r.field_71474_y.field_74325_U)
+         {
+-            GlStateManager.func_179114_b(entity.field_70127_C + (entity.field_70125_A - entity.field_70127_C) * p_78467_1_, 1.0F, 0.0F, 0.0F);
+-
++            float yaw = entity.field_70126_B + (entity.field_70177_z - entity.field_70126_B) * p_78467_1_ + 180.0F;
++            float pitch = entity.field_70127_C + (entity.field_70125_A - entity.field_70127_C) * p_78467_1_;
++            float roll = 0.0F;
+             if (entity instanceof EntityAnimal)
+             {
+                 EntityAnimal entityanimal = (EntityAnimal)entity;
+-                GlStateManager.func_179114_b(entityanimal.field_70758_at + (entityanimal.field_70759_as - entityanimal.field_70758_at) * p_78467_1_ + 180.0F, 0.0F, 1.0F, 0.0F);
++                yaw = entityanimal.field_70758_at + (entityanimal.field_70759_as - entityanimal.field_70758_at) * p_78467_1_ + 180.0F;
+             }
+-            else
+-            {
+-                GlStateManager.func_179114_b(entity.field_70126_B + (entity.field_70177_z - entity.field_70126_B) * p_78467_1_ + 180.0F, 0.0F, 1.0F, 0.0F);
+-            }
++            Block block = ActiveRenderInfo.func_180786_a(this.field_78531_r.field_71441_e, entity, p_78467_1_);
++            net.minecraftforge.client.event.EntityViewRenderEvent.CameraSetup event = new net.minecraftforge.client.event.EntityViewRenderEvent.CameraSetup(this, entity, block, p_78467_1_, yaw, pitch, roll);
++            net.minecraftforge.common.MinecraftForge.EVENT_BUS.post(event);
++            GlStateManager.func_179114_b(event.roll, 0.0F, 0.0F, 1.0F);
++            GlStateManager.func_179114_b(event.pitch, 1.0F, 0.0F, 0.0F);
++            GlStateManager.func_179114_b(event.yaw, 0.0F, 1.0F, 0.0F);
+         }
+ 
+         GlStateManager.func_179109_b(0.0F, -f1, 0.0F);
+@@ -1081,7 +1078,7 @@
  
                  try
                  {
@@ -34,7 +62,7 @@
                  }
                  catch (Throwable throwable)
                  {
-@@ -1145,7 +1139,7 @@
+@@ -1145,7 +1142,7 @@
  
                      if (this.field_78531_r.field_71442_b.func_178889_l() == WorldSettings.GameType.SPECTATOR)
                      {
@@ -43,7 +71,7 @@
                      }
                      else
                      {
-@@ -1296,7 +1290,9 @@
+@@ -1296,7 +1293,9 @@
              GlStateManager.func_179094_E();
              RenderHelper.func_74519_b();
              this.field_78531_r.field_71424_I.func_76318_c("entities");
@@ -53,7 +81,7 @@
              RenderHelper.func_74518_a();
              this.func_175072_h();
              GlStateManager.func_179128_n(5888);
-@@ -1308,6 +1304,7 @@
+@@ -1308,6 +1307,7 @@
                  entityplayer = (EntityPlayer)entity;
                  GlStateManager.func_179118_c();
                  this.field_78531_r.field_71424_I.func_76318_c("outline");
@@ -61,7 +89,7 @@
                  renderglobal.func_72731_b(entityplayer, this.field_78531_r.field_71476_x, 0, p_175068_2_);
                  GlStateManager.func_179141_d();
              }
-@@ -1321,6 +1318,7 @@
+@@ -1321,6 +1321,7 @@
              entityplayer = (EntityPlayer)entity;
              GlStateManager.func_179118_c();
              this.field_78531_r.field_71424_I.func_76318_c("outline");
@@ -69,7 +97,7 @@
              renderglobal.func_72731_b(entityplayer, this.field_78531_r.field_71476_x, 0, p_175068_2_);
              GlStateManager.func_179141_d();
          }
-@@ -1373,6 +1371,16 @@
+@@ -1373,6 +1374,16 @@
              renderglobal.func_174977_a(EnumWorldBlockLayer.TRANSLUCENT, (double)p_175068_2_, p_175068_1_, entity);
          }
  
@@ -86,7 +114,7 @@
          GlStateManager.func_179103_j(7424);
          GlStateManager.func_179132_a(true);
          GlStateManager.func_179089_o();
-@@ -1385,8 +1393,12 @@
+@@ -1385,8 +1396,12 @@
              this.func_180437_a(renderglobal, p_175068_2_, p_175068_1_);
          }
  
@@ -99,7 +127,7 @@
          if (this.field_175074_C)
          {
              GlStateManager.func_179086_m(256);
-@@ -1498,6 +1510,13 @@
+@@ -1498,6 +1513,13 @@
  
      protected void func_78474_d(float p_78474_1_)
      {
@@ -113,7 +141,7 @@
          float f1 = this.field_78531_r.field_71441_e.func_72867_j(p_78474_1_);
  
          if (f1 > 0.0F)
-@@ -1835,6 +1854,13 @@
+@@ -1835,6 +1857,13 @@
              this.field_175081_S = f8;
          }
  
@@ -127,7 +155,7 @@
          GlStateManager.func_179082_a(this.field_175080_Q, this.field_175082_R, this.field_175081_S, 0.0F);
      }
  
-@@ -1854,6 +1880,10 @@
+@@ -1854,6 +1883,10 @@
          Block block = ActiveRenderInfo.func_180786_a(this.field_78531_r.field_71441_e, entity, p_78468_2_);
          float f1;
  
@@ -138,7 +166,7 @@
          if (entity instanceof EntityLivingBase && ((EntityLivingBase)entity).func_70644_a(Potion.field_76440_q))
          {
              f1 = 5.0F;
-@@ -1931,6 +1961,7 @@
+@@ -1931,6 +1964,7 @@
                  GlStateManager.func_179102_b(f1 * 0.05F);
                  GlStateManager.func_179153_c(Math.min(f1, 192.0F) * 0.5F);
              }

src/main/java/net/minecraftforge/client/event/EntityViewRenderEvent.java

@@ -78,4 +78,22 @@ public abstract class EntityViewRenderEvent extends Event
             this.blue = blue;
         }
     }
+    
+    /** 
+     * Event that allows mods to alter the angles of the player's camera. Mainly useful for applying roll.
+     */
+    public static class CameraSetup extends EntityViewRenderEvent
+    {
+        public float yaw;
+        public float pitch;
+        public float roll;
+
+        public CameraSetup(EntityRenderer renderer, Entity entity, Block block, double renderPartialTicks, float yaw, float pitch, float roll)
+        {
+            super(renderer, entity, block, renderPartialTicks);
+            this.yaw = yaw;
+            this.pitch = pitch;
+            this.roll = roll;
+        }
+    }
 }