diff --git a/build.gradle b/build.gradle
index d4fa2d5114..fec2213330 100644
--- a/build.gradle
+++ b/build.gradle
@@ -79,8 +79,7 @@ project(":core") {
     apply plugin: "java"
 
     dependencies {
-        compile 'com.github.Anuken:ucore:d43f3b48ec'
-        //compile fileTree(dir: '../core/lib', include: '*.jar')
+       // compile 'com.github.Anuken:ucore:61c43bf'
         compile "com.badlogicgames.gdx:gdx:$gdxVersion"
         compile "com.badlogicgames.gdx:gdx-ai:1.8.1"
     }
diff --git a/core/assets/shaders/shield.fragment b/core/assets/shaders/shield.fragment
index e2cdb0dfc1..eed64e553c 100644
--- a/core/assets/shaders/shield.fragment
+++ b/core/assets/shaders/shield.fragment
@@ -3,6 +3,9 @@ precision mediump float;
 precision mediump int;
 #endif
 
+#define MAX_HITS 64
+#define HIT_RADIUS 12.0
+
 uniform sampler2D u_texture;
 
 uniform vec4 u_color;
@@ -10,6 +13,8 @@ uniform vec2 u_texsize;
 uniform float u_time;
 uniform float u_scaling;
 uniform vec2 u_offset;
+uniform int u_hitamount;
+uniform vec3 u_hits[MAX_HITS];
 
 varying vec4 v_color;
 varying vec2 v_texCoord;
@@ -49,8 +54,19 @@ void main() {
 	        }
 	        
 	        color.a = 0.18;
+	        
+	        for(int i = 0; i < u_hitamount; i ++){
+	    		vec3 hit = u_hits[i];
+	    		float rad = hit.z * HIT_RADIUS;
+	    		float fract = 1.0 - hit.z;
+	    	
+	    		if(abs(distance(vec2(hit.x, hit.y), coords - u_texsize/2.0) - rad) < 1.0){
+	    			color = mix(color, u_color* vec4(si, si, si, 1.0), (1.0 * fract));
+	    			color.a = 0.18 + 0.82 *fract;
+	    		}
+	    	}
 	    }
-	    
+		
 		gl_FragColor = color;
 	}
 }
diff --git a/core/src/io/anuke/mindustry/Vars.java b/core/src/io/anuke/mindustry/Vars.java
index a414bb24f4..734a962d5e 100644
--- a/core/src/io/anuke/mindustry/Vars.java
+++ b/core/src/io/anuke/mindustry/Vars.java
@@ -42,7 +42,7 @@ public class Vars{
 	//whether to draw chunk borders
 	public static boolean debugChunks = false;
 	//whether turrets have infinite ammo (only with debug)
-	public static boolean infiniteAmmo = true;
+	public static boolean infiniteAmmo = false;
 	//whether to show paths of enemies
 	public static boolean showPaths = true;
 	//number of save slots-- increasing may lead to layout issues
diff --git a/core/src/io/anuke/mindustry/core/Control.java b/core/src/io/anuke/mindustry/core/Control.java
index 11d41b6fc3..7d78f2e6c6 100644
--- a/core/src/io/anuke/mindustry/core/Control.java
+++ b/core/src/io/anuke/mindustry/core/Control.java
@@ -59,9 +59,12 @@ public class Control extends Module{
 	float respawntime;
 	
 	public Control(){
-		if(Mindustry.args.contains("-debug", false)){
+		if(Mindustry.args.contains("-debug", false))
 			Vars.debug = true;
-		}
+		if(Mindustry.args.contains("-profile", false))
+			Vars.profile = true;
+		if(Mindustry.args.contains("-debugGL", false))
+			Vars.debugGL = true;
 		
 		UCore.log("Total blocks loaded: " + Block.getAllBlocks().size);
 		
diff --git a/core/src/io/anuke/mindustry/core/Renderer.java b/core/src/io/anuke/mindustry/core/Renderer.java
index eba3b1d418..9f8a956a53 100644
--- a/core/src/io/anuke/mindustry/core/Renderer.java
+++ b/core/src/io/anuke/mindustry/core/Renderer.java
@@ -11,6 +11,7 @@ import com.badlogic.gdx.graphics.Texture;
 import com.badlogic.gdx.graphics.profiling.GLProfiler;
 import com.badlogic.gdx.math.MathUtils;
 import com.badlogic.gdx.math.Vector2;
+import com.badlogic.gdx.utils.FloatArray;
 
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.core.GameState.State;
@@ -39,6 +40,8 @@ public class Renderer extends RendererModule{
 	int targetscale = baseCameraScale;
 	int chunksize = 32;
 	Cache[][] floorCache;
+	FloatArray shieldHits = new FloatArray();
+	float shieldHitDuration = 18f;
 
 	public Renderer() {
 		Core.cameraScale = baseCameraScale;
@@ -127,6 +130,10 @@ public class Renderer extends RendererModule{
 			drawDefault();
 
 			Profiler.end("draw");
+			if(Profiler.updating())
+				Profiler.getTimes().put("draw", Profiler.getTimes().get("draw") 
+						- Profiler.getTimes().get("blockDraw") 
+						- Profiler.getTimes().get("entityDraw"));
 
 			if(Vars.debug && Vars.debugGL && Timers.get("profile", 60)){
 				UCore.log("shaders: " + GLProfiler.shaderSwitches, "calls: " + GLProfiler.drawCalls, "bindings: " + GLProfiler.textureBindings, "vertices: " + GLProfiler.vertexCount.average);
@@ -195,11 +202,26 @@ public class Renderer extends RendererModule{
 	}
 
 	void drawShield(){
+		for(int i = 0; i < shieldHits.size/3; i ++){
+			//float x = hits.get(i*3+0);
+			//float y = hits.get(i*3+1);
+			float time = shieldHits.get(i*3+2);
+			
+			time += Timers.delta() / shieldHitDuration;
+			shieldHits.set(i*3 + 2, time);
+			
+			if(time >= 1f){
+				shieldHits.removeRange(i*3, i*3 + 2);
+				i --;
+			}
+		}
+		
 		Texture texture = Graphics.getSurface("shield").texture();
 		Shaders.shield.color.set(Color.SKY);
 
 		Tmp.tr2.setRegion(texture);
 		Shaders.shield.region = Tmp.tr2;
+		Shaders.shield.hits = shieldHits;
 
 		Graphics.end();
 		Graphics.shader(Shaders.shield);
@@ -211,6 +233,10 @@ public class Renderer extends RendererModule{
 		Graphics.end();
 		Graphics.beginCam();
 	}
+	
+	public void addShieldHit(float x, float y){
+		shieldHits.addAll(x, y, 0f);
+	}
 
 	void renderTiles(){
 		int chunksx = world.width() / chunksize, chunksy = world.height() / chunksize;
diff --git a/core/src/io/anuke/mindustry/entities/effect/Shaders.java b/core/src/io/anuke/mindustry/entities/effect/Shaders.java
index e21609fe1c..4d40b2c007 100644
--- a/core/src/io/anuke/mindustry/entities/effect/Shaders.java
+++ b/core/src/io/anuke/mindustry/entities/effect/Shaders.java
@@ -1,6 +1,7 @@
 package io.anuke.mindustry.entities.effect;
 
 import com.badlogic.gdx.graphics.Color;
+import com.badlogic.gdx.utils.FloatArray;
 
 import io.anuke.ucore.core.Core;
 import io.anuke.ucore.core.Settings;
@@ -28,7 +29,9 @@ public class Shaders{
 	}
 	
 	public static class Shield extends Shader{
+		public static final int MAX_HITS = 3*64;
 		public Color color = new Color();
+		public FloatArray hits;
 		
 		public Shield(){
 			super("shield", "default");
@@ -38,6 +41,8 @@ public class Shaders{
 		public void apply(){
 			float scale = Settings.getBool("pixelate") ? 1 : Core.cameraScale / Core.camera.zoom;
 			float scaling = Core.cameraScale / 4f / Core.camera.zoom;
+			shader.setUniform3fv("u_hits[0]", hits.items, 0, Math.min(hits.size, MAX_HITS));
+			shader.setUniformi("u_hitamount", Math.min(hits.size, MAX_HITS)/3);
 			shader.setUniformf("u_color", color);
 			shader.setUniformf("u_time", Timers.time());
 			shader.setUniformf("u_scaling", scaling);
diff --git a/core/src/io/anuke/mindustry/entities/effect/Shield.java b/core/src/io/anuke/mindustry/entities/effect/Shield.java
index 2e4597aa4e..1f1193e1f3 100644
--- a/core/src/io/anuke/mindustry/entities/effect/Shield.java
+++ b/core/src/io/anuke/mindustry/entities/effect/Shield.java
@@ -1,7 +1,10 @@
 package io.anuke.mindustry.entities.effect;
 
 import com.badlogic.gdx.graphics.Color;
+import com.badlogic.gdx.math.Interpolation;
 
+import io.anuke.mindustry.entities.Bullet;
+import io.anuke.mindustry.entities.enemies.Enemy;
 import io.anuke.mindustry.world.Tile;
 import io.anuke.mindustry.world.blocks.types.defense.ShieldBlock;
 import io.anuke.ucore.core.Draw;
@@ -14,6 +17,8 @@ import io.anuke.ucore.util.Mathf;
 
 public class Shield extends Entity{
 	public boolean active;
+	public boolean hitPlayers = true;
+	
 	private float uptime = 0f;
 	private final Tile tile;
 	//TODO
@@ -30,11 +35,14 @@ public class Shield extends Entity{
 	
 	@Override
 	public void update(){
+		float alpha = 0.1f;
+		Interpolation interp = Interpolation.fade;
+		
 		if(active){
-			uptime += Timers.delta() / 90f;
+			uptime = interp.apply(uptime, 1f, alpha * Timers.delta());
 		}else{
-			uptime -= Timers.delta() / 60f;
-			if(uptime < 0)
+			uptime = interp.apply(uptime, 0f, alpha * Timers.delta());
+			if(uptime <= 0.05f)
 				remove();
 		}
 		uptime = Mathf.clamp(uptime);
@@ -46,14 +54,14 @@ public class Shield extends Entity{
 		
 		ShieldBlock block = (ShieldBlock)tile.block();
 		
-		Entities.getNearby(x, y, block.shieldRadius * 2*uptime + 10, entity->{
-			if(entity instanceof BulletEntity){
-				BulletEntity bullet = (BulletEntity)entity;
+		Entities.getNearby(Entities.getGroup(Bullet.class), x, y, block.shieldRadius * 2*uptime + 10, entity->{
+			BulletEntity bullet = (BulletEntity)entity;
+			if((bullet.owner instanceof Enemy || hitPlayers)){
 				
 				float dst =  entity.distanceTo(this);
 				
-				if(Math.abs(dst - block.shieldRadius) < 2){
-					bullet.velocity.scl(-1);
+				if(dst  < drawRadius()/2f){
+					((ShieldBlock)tile.block()).handleBullet(tile, bullet);
 				}
 			}
 		});
@@ -65,10 +73,7 @@ public class Shield extends Entity{
 			return;
 		}
 		
-		ShieldBlock block = (ShieldBlock)tile.block();
-		
-		float rad = block.shieldRadius*2 + Mathf.sin(Timers.time(), 25f, 2f);
-		rad *= uptime;
+		float rad = drawRadius();
 		
 		Graphics.surface("shield", false);
 		Draw.color(Color.ROYAL);
@@ -78,6 +83,11 @@ public class Shield extends Entity{
 		Graphics.surface();
 	}
 	
+	float drawRadius(){
+		ShieldBlock block = (ShieldBlock)tile.block();
+		return (block.shieldRadius*2 + Mathf.sin(Timers.time(), 25f, 2f)) * uptime;
+	}
+	
 	public void removeDelay(){
 		active = false;
 	}
diff --git a/core/src/io/anuke/mindustry/ui/fragments/HudFragment.java b/core/src/io/anuke/mindustry/ui/fragments/HudFragment.java
index 5a9ebcc900..10c1a67fd4 100644
--- a/core/src/io/anuke/mindustry/ui/fragments/HudFragment.java
+++ b/core/src/io/anuke/mindustry/ui/fragments/HudFragment.java
@@ -163,6 +163,7 @@ public class HudFragment implements Fragment{
 	}
 	
 	public void updateItems(){
+		
 		itemtable.clear();
 		itemtable.left();
 		
@@ -183,6 +184,7 @@ public class HudFragment implements Fragment{
 	}
 	
 	public void fadeRespawn(boolean in){
+		
 		respawntable.addAction(Actions.color(in ? new Color(0, 0, 0, 0.3f) : Color.CLEAR, 0.3f));
 	}
 }
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/defense/PowerTurret.java b/core/src/io/anuke/mindustry/world/blocks/types/defense/PowerTurret.java
index fd5d6361ec..ec105ee656 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/defense/PowerTurret.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/defense/PowerTurret.java
@@ -41,6 +41,12 @@ public class PowerTurret extends Turret implements PowerAcceptor{
 		Draw.dashcircle(tile.worldx() + offset.x, tile.worldy() + offset.y, range);
 		Draw.reset();
 		
+		drawPowerBar(tile);
+	}
+	
+	public void drawPowerBar(Tile tile){
+		Vector2 offset = getPlaceOffset();
+		
 		PowerTurretEntity entity = tile.entity();
 		
 		float fract = (float)entity.power / powerCapacity;
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/defense/RepairTurret.java b/core/src/io/anuke/mindustry/world/blocks/types/defense/RepairTurret.java
index 13d48f0b07..89aad46348 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/defense/RepairTurret.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/defense/RepairTurret.java
@@ -36,7 +36,9 @@ public class RepairTurret extends PowerTurret{
 	
 	@Override
 	public void update(Tile tile){
-		TurretEntity entity = tile.entity();
+		PowerTurretEntity entity = tile.entity();
+		
+		if(entity.power < powerUsed) return;
 		
 		if(Timers.get(entity, "blocktarget", targetInterval)){
 			entity.blockTarget = Vars.world.findTileTarget(tile.worldx(), tile.worldy(), tile, range, true);
@@ -51,6 +53,8 @@ public class RepairTurret extends PowerTurret{
 				
 				if(entity.blockTarget.health > entity.blockTarget.health)
 					entity.blockTarget.health = entity.blockTarget.maxhealth;
+				
+				entity.power -= powerUsed;
 			}
 		}
 	}
@@ -60,6 +64,8 @@ public class RepairTurret extends PowerTurret{
 		Draw.color("green");
 		Draw.dashcircle(tile.worldx(), tile.worldy(), range);
 		Draw.reset();
+		
+		drawPowerBar(tile);
 	}
 	
 	@Override
diff --git a/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldBlock.java b/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldBlock.java
index 53cb4f6774..11be93223a 100644
--- a/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldBlock.java
+++ b/core/src/io/anuke/mindustry/world/blocks/types/defense/ShieldBlock.java
@@ -1,17 +1,20 @@
 package io.anuke.mindustry.world.blocks.types.defense;
 
+import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.entities.TileEntity;
+import io.anuke.mindustry.entities.effect.Fx;
 import io.anuke.mindustry.entities.effect.Shield;
 import io.anuke.mindustry.world.Tile;
 import io.anuke.mindustry.world.blocks.types.PowerBlock;
+import io.anuke.ucore.core.Effects;
 import io.anuke.ucore.core.Timers;
+import io.anuke.ucore.entities.BulletEntity;
 
 public class ShieldBlock extends PowerBlock{
-	private static boolean debugShield = false;
-	
 	public float shieldRadius = 40f;
 	public float powerDrain = 0.005f;
-
+	public float powerPerDamage = 0.1f;
+	
 	public ShieldBlock(String name) {
 		super(name);
 		voltage = powerDrain;
@@ -23,18 +26,18 @@ public class ShieldBlock extends PowerBlock{
 
 		if(entity.shield == null){
 			entity.shield = new Shield(tile);
-			if(debugShield)
+			if(Vars.infiniteAmmo && Vars.debug)
 				entity.shield.add();
 		}
 
-		if(entity.power > powerDrain * Timers.delta()){
+		if(entity.power > powerPerDamage){
 			if(!entity.shield.active && entity.power > powerDrain * Timers.delta() * 10f){
 				entity.shield.add();
 			}
 
 			entity.power -= powerDrain * Timers.delta();
 		}else{
-			if(entity.shield.active && !debugShield){
+			if(entity.shield.active && !(Vars.infiniteAmmo && Vars.debug)){
 				entity.shield.removeDelay();
 			}
 		}
@@ -45,6 +48,20 @@ public class ShieldBlock extends PowerBlock{
 	public TileEntity getEntity(){
 		return new ShieldEntity();
 	}
+	
+	public void handleBullet(Tile tile, BulletEntity bullet){
+		ShieldEntity entity = tile.entity();
+		
+		if(entity.power < bullet.getDamage() * powerPerDamage){
+			return;
+		}
+		
+		bullet.remove();
+		Effects.effect(Fx.laserhit, bullet);
+		Vars.renderer.addShieldHit(bullet.x, bullet.y);
+		
+		entity.power -= bullet.getDamage() * powerPerDamage;
+	}
 
 	static class ShieldEntity extends PowerEntity{
 		Shield shield;
diff --git a/desktop/mindustry-saves/0.mins b/desktop/mindustry-saves/0.mins
index fcc59b83e9..a4159bda14 100644
Binary files a/desktop/mindustry-saves/0.mins and b/desktop/mindustry-saves/0.mins differ
diff --git a/desktop/mindustry-saves/1.mins b/desktop/mindustry-saves/1.mins
index 508e5b9409..cdfaa3f8cd 100644
Binary files a/desktop/mindustry-saves/1.mins and b/desktop/mindustry-saves/1.mins differ