Add mirage spell

src/main/java/electroblob/wizardry/WizardryEventHandler.java

@@ -210,6 +210,12 @@ public final class WizardryEventHandler {
 				}
 			}
 
+			// Mirage
+			if(event.getTarget().isPotionActive(WizardryPotions.mirage)){
+				// Can't find players under mirage at all! (Pretty sure this excludes revenge-targeting)
+				((EntityLiving)event.getEntityLiving()).setAttackTarget(null);
+			}
+
 			// Blindness tweak
 			// I'm not going as far as potion core's implementation, this is just so it does *something* to mobs
 			if(event.getEntityLiving().isPotionActive(MobEffects.BLINDNESS) && !Loader.isModLoaded("potioncore")

src/main/java/electroblob/wizardry/client/renderer/effect/RenderMirage.java

@@ -0,0 +1,45 @@
+package electroblob.wizardry.client.renderer.effect;
+
+import electroblob.wizardry.registry.WizardryPotions;
+import net.minecraft.client.renderer.GlStateManager;
+import net.minecraft.client.renderer.GlStateManager.DestFactor;
+import net.minecraft.client.renderer.GlStateManager.SourceFactor;
+import net.minecraftforge.client.event.RenderLivingEvent;
+import net.minecraftforge.fml.common.Mod.EventBusSubscriber;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.relauncher.Side;
+
+import java.util.Random;
+
+@EventBusSubscriber(Side.CLIENT)
+public class RenderMirage {
+
+	private static final int BLINK_PERIOD_1 = 47; // Use two prime numbers to make it look as chaotic as possible
+	private static final int BLINK_PERIOD_2 = 71;
+
+	private static final double MAX_OFFSET = 3;
+
+	private static final Random random = new Random(); // Seed will be set later
+
+	@SubscribeEvent
+	public static void onRenderLivingEvent(RenderLivingEvent.Pre<?> event){
+		if(event.getEntity().isPotionActive(WizardryPotions.mirage)){
+			random.setSeed(event.getEntity().ticksExisted / BLINK_PERIOD_1
+						 + event.getEntity().ticksExisted / BLINK_PERIOD_2);
+			GlStateManager.pushMatrix();
+			GlStateManager.blendFunc(SourceFactor.SRC_ALPHA, DestFactor.ONE); // GhoOOoOostly OooOOOo00oOOo
+			GlStateManager.color(1, 1, 1, 0.5f);
+			GlStateManager.translate((random.nextDouble() * 2 - 1) * MAX_OFFSET,
+					(random.nextDouble() * 2 - 1) * MAX_OFFSET, (random.nextDouble() * 2 - 1) * MAX_OFFSET);
+		}
+	}
+
+	@SubscribeEvent
+	public static void onRenderLivingEvent(RenderLivingEvent.Post<?> event){
+		if(event.getEntity().isPotionActive(WizardryPotions.mirage)){
+			GlStateManager.blendFunc(SourceFactor.SRC_ALPHA, DestFactor.ONE_MINUS_SRC_ALPHA);
+			GlStateManager.popMatrix();
+		}
+	}
+
+}

src/main/java/electroblob/wizardry/registry/Spells.java

@@ -468,6 +468,7 @@ public final class Spells {
 		registry.register(new WitheringTotem());
 		registry.register(new Fangs());
 		registry.register(new GuardianBeam());
+		registry.register(new SpellBuff("mirage", 0.64f, 0.47f, 0.9f, () -> WizardryPotions.mirage));
 		registry.register(new RadiantTotem());
 
 		registry.register(new Firestorm());

src/main/java/electroblob/wizardry/registry/WizardryPotions.java

@@ -56,6 +56,7 @@ public final class WizardryPotions {
 	public static final Potion containment = placeholder();
 	public static final Potion frost_step = placeholder();
 	public static final Potion mark_of_sacrifice = placeholder();
+	public static final Potion mirage = placeholder();
 
 	/**
 	 * Sets both the registry and unlocalised names of the given potion, then registers it with the given registry. Use
@@ -194,6 +195,12 @@ public final class WizardryPotions {
 		registerPotion(registry, "mark_of_sacrifice", new PotionMagicEffect(true, 0xe90e48,
 				new ResourceLocation(Wizardry.MODID, "textures/gui/potion_icons/mark_of_sacrifice.png")));
 
+		registerPotion(registry, "mirage", new PotionMagicEffectParticles(false, 0, // No particles or we'll see the player's actual position!
+				new ResourceLocation(Wizardry.MODID, "textures/gui/potion_icons/mirage.png")){
+			@Override
+			public void spawnCustomParticle(World world, double x, double y, double z){} // We only want the syncing
+		}.setBeneficial());
+
 	}
 
 }