basic laser gun working

Author: htmlcsjs

src/main/java/net/htmlcsjs/htmlTech/api/damagesources/HTDamageSources.java

@@ -0,0 +1,11 @@
+package net.htmlcsjs.htmlTech.api.damagesources;
+
+import net.minecraft.util.DamageSource;
+
+public class HTDamageSources {
+    private static final DamageSource LASER = new DamageSource("laser").setFireDamage();
+
+    public static DamageSource getLaserDamage() {
+        return LASER;
+    }
+}

src/main/java/net/htmlcsjs/htmlTech/common/HTConfig.java

@@ -13,5 +13,8 @@ public class HTConfig {
     public static class LaserOptions {
         @Config.Comment({"Minimum tier of laser collectors.", "Default: 5 [IV]"})
         public int minLaserTier = 5;
+
+        @Config.Comment({"Amount of damage to do to an entity when it is hit by the laser gun", "Default: 10 (5 hearts)"})
+        public float laserGunDamage = 10.0F;
     }
 }

src/main/java/net/htmlcsjs/htmlTech/common/item/HTMetaItem.java

@@ -6,6 +6,7 @@
 import gregtech.api.items.metaitem.MetaItem;
 import gregtech.api.items.metaitem.StandardMetaItem;
 import gregtech.api.items.metaitem.stats.IItemBehaviour;
+import net.htmlcsjs.htmlTech.common.item.behaviors.LaserGunBehaviour;
 import net.htmlcsjs.htmlTech.common.item.behaviors.LaserInspectorToolBehaviour;
 import net.minecraft.client.resources.I18n;
 import net.minecraft.client.util.ITooltipFlag;
@@ -23,8 +24,7 @@
 import java.util.Arrays;
 import java.util.List;
 
-import static net.htmlcsjs.htmlTech.common.item.HTMetaItems.EMPTY_LASER;
-import static net.htmlcsjs.htmlTech.common.item.HTMetaItems.LASER_INSPECTOR;
+import static net.htmlcsjs.htmlTech.common.item.HTMetaItems.*;
 
 public class HTMetaItem extends StandardMetaItem {
     public HTMetaItem(short offset) {
@@ -34,7 +34,7 @@ public HTMetaItem(short offset) {
     public void registerSubItems() {
         LASER_INSPECTOR = addItem(1, "tool.laser.inspector").addComponents(new LaserInspectorToolBehaviour()).setMaxStackSize(1);
         EMPTY_LASER = addItem(2, "empty_laser").setMaxStackSize(1);
-        //LASER_GUN = addItem(3, "laser_gun").setMaxStackSize(1).addComponents(new LaserGunBehaviour());
+        LASER_GUN = addItem(3, "laser_gun").setMaxStackSize(1).addComponents(new LaserGunBehaviour());
     }
 
     @Override

src/main/java/net/htmlcsjs/htmlTech/common/item/behaviors/LaserGunBehaviour.java

@@ -6,6 +6,8 @@
 import gregtech.api.items.metaitem.stats.IItemBehaviour;
 import gregtech.client.particle.GTLaserBeamParticle;
 import gregtech.client.particle.GTParticleManager;
+import net.htmlcsjs.htmlTech.api.damagesources.HTDamageSources;
+import net.htmlcsjs.htmlTech.common.HTConfig;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
@@ -19,6 +21,7 @@
 public class LaserGunBehaviour implements IItemBehaviour {
 
     private GTLaserBeamParticle particle;
+    private float alpha; // TODO move to getter after ceu pr #800
 
     @Override
     public ActionResult<ItemStack> onItemRightClick(World world, EntityPlayer player, EnumHand hand) {
@@ -27,11 +30,17 @@ public ActionResult<ItemStack> onItemRightClick(World world, EntityPlayer player
         if (particle != null) {
             GTParticleManager.INSTANCE.clearAllEffects(true);
         }
+        alpha = 1.0F;
         particle = new GTLaserBeamParticle(world, Vector3.fromEntity(player).add(0, player.getEyeHeight(), 0), Vector3.fromEntity(player).subtract(new Vector3(rayTracedLooking.hitVec)))
                 .setBody(new ResourceLocation(GTValues.MODID, "textures/fx/laser/laser.png")); // create a beam particle and set its texture.
         GTParticleManager.INSTANCE.addEffect(particle); // add it to the particle manager.
         ItemStack itemStack = player.getHeldItem(hand);
-        return ActionResult.newResult(EnumActionResult.PASS, itemStack);
+
+        if (rayTracedLooking.typeOfHit == RayTraceResult.Type.ENTITY && rayTracedLooking.entityHit != null) {
+            rayTracedLooking.entityHit.attackEntityFrom(HTDamageSources.getLaserDamage(), HTConfig.lasers.laserGunDamage);
+        }
+
+        return ActionResult.newResult(EnumActionResult.SUCCESS, itemStack);
     }
 
     /**
@@ -116,4 +125,13 @@ private RayTraceResult rayTrace(EntityLivingBase entity, double reachDistance, f
         }
     }
 
+    @Override
+    public void onUpdate(ItemStack itemStack, Entity entity) {
+        if (alpha > 0) {
+            alpha -= 0.05F;
+            if (particle != null) {
+                particle.setAlpha(alpha);
+            }
+        }
+    }
 }