Add blinding flash spell

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

@@ -240,6 +240,8 @@ public final class Spells {
 
 	// Wizardry 4.3 spells
 
+	public static final Spell blinding_flash = placeholder();
+
 	public static final Spell stormcloud = placeholder();
 
 	public static final Spell zombie_apocalypse = placeholder();
@@ -445,6 +447,8 @@ public final class Spells {
 
 		// Wizardry 4.3 spells
 
+		registry.register(new BlindingFlash());
+
 		registry.register(new Stormcloud());
 
 		registry.register(new ZombieApocalypse());

src/main/java/electroblob/wizardry/spell/BlindingFlash.java

@@ -0,0 +1,41 @@
+package electroblob.wizardry.spell;
+
+import electroblob.wizardry.item.SpellActions;
+import electroblob.wizardry.registry.WizardryItems;
+import electroblob.wizardry.util.EntityUtils;
+import electroblob.wizardry.util.ParticleBuilder;
+import electroblob.wizardry.util.ParticleBuilder.Type;
+import electroblob.wizardry.util.SpellModifiers;
+import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.init.MobEffects;
+import net.minecraft.potion.PotionEffect;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.world.World;
+
+import javax.annotation.Nullable;
+
+public class BlindingFlash extends SpellAreaEffect {
+
+	public BlindingFlash(){
+		super("blinding_flash", SpellActions.POINT_UP, false);
+		this.alwaysSucceed(true);
+		addProperties(EFFECT_DURATION); // No effect strength, you're either blinded or you're not!
+	}
+
+	@Override
+	protected boolean affectEntity(World world, Vec3d origin, @Nullable EntityLivingBase caster, EntityLivingBase target, int targetCount, int ticksInUse, SpellModifiers modifiers){
+
+		if(EntityUtils.isLiving(target)){
+			int duration = (int)(getProperty(EFFECT_DURATION).floatValue() * modifiers.get(WizardryItems.duration_upgrade));
+			target.addPotionEffect(new PotionEffect(MobEffects.BLINDNESS, duration, 0));
+		}
+
+		return true;
+	}
+
+	@Override
+	protected void spawnParticleEffect(World world, Vec3d origin, double radius, @Nullable EntityLivingBase caster, SpellModifiers modifiers){
+		if(caster != null) origin = origin.add(0, caster.height + 1, 0);
+		ParticleBuilder.create(Type.SPHERE).pos(origin).scale((float)radius * 0.8f).spawn(world);
+	}
+}