Ticket #3610: DamageAfterDeathOfAtacker_v3.patch

binaries/data/mods/public/gui/credits/texts/programming.json

@@ -108 +108 @@
             {"nick": "kingadami", "name": "Adam Winsor"},
             {"nick": "kingbasil", "name": "Giannis Fafalios"},
             {"nick": "lafferjm", "name": "Justin Lafferty"},
+            {"nick": "LeanderH", "name": "Leander Hemelhof"},
             {"nick": "leper", "name": "Georg Kilzer"},
             {"nick": "LittleDev"},
             {"nick": "livingaftermidnight", "name": "Will Dull"},

binaries/data/mods/public/simulation/components/Attack.js

@@ -486 +486 @@
  */
 Attack.prototype.PerformAttack = function(type, target)
 {
+    let cmpDamage = Engine.QueryInterface(SYSTEM_ENTITY, IID_Damage);
     // If this is a ranged attack, then launch a projectile
     if (type == "Ranged")
     {
@@ -555 +556 @@
 
         let playerId = Engine.QueryInterface(this.entity, IID_Ownership).GetOwner();
         cmpTimer = Engine.QueryInterface(SYSTEM_ENTITY, IID_Timer);
-        cmpTimer.SetTimeout(this.entity, IID_Attack, "MissileHit", timeToTarget * 1000, {
-            "type": type,
-            "target": target,
-            "position": realTargetPosition,
-            "direction": missileDirection,
-            "projectileId": id,
-            "playerId":playerId
-        });
+        let data = {
+                "type": type,
+                "attacker": this.entity,
+                "target": target,
+                "strengths": this.GetAttackStrengths(type),
+                "position": realTargetPosition,
+                "direction": missileDirection,
+                "projectileId": id,
+                "playerId": playerId,
+                "multiplier": this.GetAttackBonus(type, target),
+                "isSplash": false,
+                "attackerOwner": Engine.QueryInterface(this.entity, IID_Ownership).GetOwner()
+            }
+        if (this.template.Ranged.Splash)
+        {
+            data.friendlyFire = this.template.Ranged.Splash.FriendlyFire;
+            data.range = this.template.Ranged.Splash.Range;
+            data.shape = this.template.Ranged.Splash.Shape;
+            data.isSplash = true;
+        }
+        cmpTimer.SetTimeout(SYSTEM_ENTITY, IID_Damage, "MissileHit", timeToTarget * 1000, data);
     }
     else if (type == "Capture")
     {
@@ -593 +607 @@
     else
     {
         // Melee attack - hurt the target immediately
-        Damage.CauseDamage({
+        cmpDamage.CauseDamage({
             "strengths": this.GetAttackStrengths(type),
             "target": target,
             "attacker": this.entity,
@@ -604 +618 @@
     // TODO: charge attacks (need to design how they work)
 };
 
-Attack.prototype.InterpolatedLocation = function(ent, lateness)
-{
-    let cmpTimer = Engine.QueryInterface(SYSTEM_ENTITY, IID_Timer);
-    let turnLength = cmpTimer.GetLatestTurnLength()/1000;
-    let cmpTargetPosition = Engine.QueryInterface(ent, IID_Position);
-    if (!cmpTargetPosition || !cmpTargetPosition.IsInWorld()) // TODO: handle dead target properly
-        return undefined;
-    let curPos = cmpTargetPosition.GetPosition();
-    let prevPos = cmpTargetPosition.GetPreviousPosition();
-    lateness /= 1000;
-    return new Vector3D((curPos.x * (turnLength - lateness) + prevPos.x * lateness) / turnLength,
-            0,
-            (curPos.z * (turnLength - lateness) + prevPos.z * lateness) / turnLength);
-};
-
-// Tests whether it point is inside of ent's footprint
-Attack.prototype.testCollision = function(ent, point, lateness)
-{
-    let targetPosition = this.InterpolatedLocation(ent, lateness);
-    if (!targetPosition)
-        return false;
-    let cmpFootprint = Engine.QueryInterface(ent, IID_Footprint);
-    if (!cmpFootprint)
-        return false;
-    let targetShape = cmpFootprint.GetShape();
-
-    if (!targetShape || !targetPosition)
-        return false;
-
-    if (targetShape.type === 'circle')
-    {
-        // Use VectorDistanceSquared and square targetShape.radius to avoid square roots.
-        return (targetPosition.horizDistanceTo(point) < (targetShape.radius * targetShape.radius));
-    }
-    else
-    {
-        let angle = Engine.QueryInterface(ent, IID_Position).GetRotation().y;
-
-        let d = Vector3D.sub(point, targetPosition);
-        d = Vector2D.from3D(d).rotate(-angle);
-
-        return d.x < Math.abs(targetShape.width/2) && d.y < Math.abs(targetShape.depth/2);
-    }
-};
-
-Attack.prototype.MissileHit = function(data, lateness)
-{
-    let targetPosition = this.InterpolatedLocation(data.target, lateness);
-    if (!targetPosition)
-        return;
-
-    // Do this first in case the direct hit kills the target
-    if (this.template.Ranged.Splash)
-    {
-        let playersToDamage;
-
-        if (this.template.Ranged.Splash.FriendlyFire == "false")
-        {
-            let cmpPlayer = QueryPlayerIDInterface(data.playerId);
-            playersToDamage = cmpPlayer.GetEnemies();
-        }
-
-        Damage.CauseSplashDamage({
-            "attacker": this.entity,
-            "origin": Vector2D.from3D(data.position),
-            "radius": this.template.Ranged.Splash.Range,
-            "shape": this.template.Ranged.Splash.Shape,
-            "strengths": this.GetAttackStrengths(data.type),
-            "direction": data.direction,
-            "playersToDamage": playersToDamage,
-            "type": data.type
-        });
-    }
-
-    if (this.testCollision(data.target, data.position, lateness))
-    {
-        data.attacker = this.entity;
-        data.multiplier = this.GetAttackBonus(data.type, data.target);
-        data.strengths = this.GetAttackStrengths(data.type);
-        // Hit the primary target
-        Damage.CauseDamage(data);
-
-        // Remove the projectile
-        let cmpProjectileManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_ProjectileManager);
-        cmpProjectileManager.RemoveProjectile(data.projectileId);
-    }
-    else
-    {
-        // If we didn't hit the main target look for nearby units
-        let cmpPlayer = QueryPlayerIDInterface(data.playerId);
-        let ents = Damage.EntitiesNearPoint(Vector2D.from3D(data.position), targetPosition.horizDistanceTo(data.position) * 2, cmpPlayer.GetEnemies());
-
-        for (let i = 0; i < ents.length; ++i)
-        {
-            if (!this.testCollision(ents[i], data.position, lateness))
-                continue;
-
-            Damage.CauseDamage({
-                "strengths": this.GetAttackStrengths(data.type),
-                "target": ents[i],
-                "attacker": this.entity,
-                "multiplier": this.GetAttackBonus(data.type, ents[i]),
-                "type": data.type
-            });
-
-            // Remove the projectile
-            let cmpProjectileManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_ProjectileManager);
-            cmpProjectileManager.RemoveProjectile(data.projectileId);
-        }
-    }
-};
-
 Attack.prototype.OnValueModification = function(msg)
 {
     if (msg.component != "Attack")

binaries/data/mods/public/simulation/components/AttackDetection.js

@@ -63 +63 @@
     if (cmpTargetOwnership.GetOwner() != cmpPlayer.GetPlayerID())
         return;
     var cmpAttackerOwnership = Engine.QueryInterface(attacker, IID_Ownership);
+    let attackerOwner = (cmpAttackOwnership ? cmpAttackerOwnership.GetOwner() : Engine.QueryInterface(SYSTEM_ENTITY, IID_Damage).GetDeadEntityOwner(attacker));
+
     // Don't register attacks dealt by myself
-    if (cmpAttackerOwnership.GetOwner() == cmpPlayer.GetPlayerID())
+    if (attackerOwner == cmpPlayer.GetPlayerID())
         return;
         
     // Since livestock can be attacked/gathered by other players
@@ -122 +124 @@
         "type": "attack",
         "target": target,
         "players": [cmpPlayer.GetPlayerID()],
-        "attacker": cmpAttackerOwnership.GetOwner(),
+        "attacker": attackerOwner,
         "targetIsDomesticAnimal": targetIsDomesticAnimal
     });
     PlaySound("attacked", target);

binaries/data/mods/public/simulation/components/Damage.js

@@ +1 @@
+function Damage() {}
+
+Damage.prototype.Schema = 
+    "<a:component type='system'/><empty/>";
+    
+Damage.prototype.Init = function()
+{
+    this.entityOwners = new Map();
+}
+
+Damage.prototype.InterpolatedLocation = function(ent, lateness)
+{
+    let cmpTimer = Engine.QueryInterface(SYSTEM_ENTITY, IID_Timer);
+    let turnLength = cmpTimer.GetLatestTurnLength()/1000;
+    let cmpTargetPosition = Engine.QueryInterface(ent, IID_Position);
+    if (!cmpTargetPosition || !cmpTargetPosition.IsInWorld()) // TODO: handle dead target properly
+        return undefined;
+    let curPos = cmpTargetPosition.GetPosition();
+    let prevPos = cmpTargetPosition.GetPreviousPosition();
+    lateness /= 1000;
+    return new Vector3D((curPos.x * (turnLength - lateness) + prevPos.x * lateness) / turnLength,
+            0,
+            (curPos.z * (turnLength - lateness) + prevPos.z * lateness) / turnLength);
+};
+/**
+ * Test if a point is inside of an entities footprint
+ * ent = <entity id>
+ * point = <Vector2D>
+ * lateness = <int>
+ */
+Damage.prototype.TestCollision = function(ent, point, lateness)
+{
+    let targetPosition = this.InterpolatedLocation(ent, lateness);
+    if (!targetPosition)
+        return false;
+    let cmpFootprint = Engine.QueryInterface(ent, IID_Footprint);
+    if (!cmpFootprint)
+        return false;
+    let targetShape = cmpFootprint.GetShape();
+
+    if (!targetShape || !targetPosition)
+        return false;
+
+    if (targetShape.type === 'circle')
+    {
+        // Use VectorDistanceSquared and square targetShape.radius to avoid square roots.
+        return (targetPosition.horizDistanceTo(point) < (targetShape.radius * targetShape.radius));
+    }
+    else
+    {
+        let angle = Engine.QueryInterface(ent, IID_Position).GetRotation().y;
+
+        let d = Vector3D.sub(point, targetPosition);
+        d = Vector2D.from3D(d).rotate(-angle);
+
+        return d.x < Math.abs(targetShape.width/2) && d.y < Math.abs(targetShape.depth/2);
+    }
+};
+
+Damage.prototype.MissileHit = function(data, lateness)
+{
+    let targetPosition = this.InterpolatedLocation(data.target, lateness);
+    if (!targetPosition)
+        return;
+    
+    // Do this first in case the direct hit kills the target
+    if (data.isSplash)
+    {
+        let playersToDamage;
+
+        if (!data.friendlyFire)
+        {
+            let cmpPlayer = QueryPlayerIDInterface(data.playerId);
+            playersToDamage = cmpPlayer.GetEnemies();
+        }
+
+        this.CauseSplashDamage({
+            "attacker": data.attacker,
+            "origin": Vector2D.from3D(data.position),
+            "radius": data.radius,
+            "shape": data.shape,
+            "strengths": data.strengths,
+            "direction": data.direction,
+            "playersToDamage": playersToDamage,
+            "type": data.type
+        });
+    }
+
+    if (this.TestCollision(data.target, data.position, lateness))
+    {
+        // Hit the primary target
+        this.CauseDamage(data);
+
+        // Remove the projectile
+        let cmpProjectileManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_ProjectileManager);
+        cmpProjectileManager.RemoveProjectile(data.projectileId);
+    }
+    else
+    {
+        // If we didn't hit the main target look for nearby units
+        let cmpPlayer = QueryPlayerIDInterface(data.playerId);
+        let ents = this.EntitiesNearPoint(Vector2D.from3D(data.position), targetPosition.horizDistanceTo(data.position) * 2, cmpPlayer.GetEnemies());
+
+        for (let i = 0; i < ents.length; ++i)
+        {
+            if (!this.TestCollision(ents[i], data.position, lateness))
+                continue;
+
+            this.CauseDamage({
+                "strengths": data.strengths,
+                "target": ents[i],
+                "attacker": data.attacker,
+                "multiplier": data.multiplier,
+                "type": data.type
+            });
+
+            // Remove the projectile
+            let cmpProjectileManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_ProjectileManager);
+            cmpProjectileManager.RemoveProjectile(data.projectileId);
+        }
+    }
+    let cmpHealth = Engine.QueryInterface(data.attacker, IID_Health);
+    if (!cmpHealth || cmpHealth.GetHitpoints() == 0) // Add killer data if it's already dead.
+    {
+        this.entityOwners.set(data.attacker, data.attackerOwner);
+    }
+};
+
+/**
+ * Damages units around a given origin.
+ * data.attacker = <entity id>
+ * data.origin = <Vector2D>
+ * data.radius = <int>
+ * data.shape = <string>
+ * data.strengths = {'hack':<float>, 'pierce':<float>, 'crush':<float>}
+ * data.type = <string>
+ * ***Optional Variables***
+ * data.direction = <unit vector>
+ * data.playersToDamage = <array of player ids>
+ */
+Damage.prototype.CauseSplashDamage = function(data)
+{
+    // Get nearby entities and define variables
+    var nearEnts = this.EntitiesNearPoint(data.origin, data.radius, data.playersToDamage);
+    var damageMultiplier = 1;
+    // Cycle through all the nearby entities and damage it appropriately based on its distance from the origin.
+    for (let i = 0; i < nearEnts.length; ++i)
+    {
+        var entityPosition = Engine.QueryInterface(nearEnts[i], IID_Position).GetPosition2D();
+        if(data.shape == 'Circular') // circular effect with quadratic falloff in every direction
+        {
+            var squaredDistanceFromOrigin = data.origin.distanceToSquared(entityPosition);
+            damageMultiplier = 1 - squaredDistanceFromOrigin / (data.radius * data.radius);
+        }
+        else if(data.shape == 'Linear') // linear effect with quadratic falloff in two directions (only used for certain missiles)
+        {
+            // Get position of entity relative to splash origin.
+            var relativePos = entityPosition.sub(data.origin);
+
+            // The width of linear splash is one fifth of the normal splash radius.
+            var width = data.radius/5;
+
+            // Effectivly rotate the axis to align with the missile direction.
+            var parallelDist = relativePos.dot(data.direction); // z axis
+            var perpDist = Math.abs(relativePos.cross(data.direction)); // y axis
+
+            // Check that the unit is within the distance at which it will get damaged.
+            if (parallelDist > -width && perpDist < width) // If in radius, quadratic falloff in both directions
+                damageMultiplier = (data.radius * data.radius - parallelDist * parallelDist) / (data.radius * data.radius)
+                                 * (width * width - perpDist * perpDist) / (width * width);
+            else
+                damageMultiplier = 0;
+        }
+        else // In case someone calls this function with an invalid shape.
+        {
+            warn("The " + data.shape + " splash damage shape is not implemented!");
+        }
+        // Call CauseDamage which reduces the hitpoints, posts network command, plays sounds....
+        this.CauseDamage({"strengths":data.strengths, "target":nearEnts[i], "attacker":data.attacker, "multiplier":damageMultiplier, "type":data.type + ".Splash"});
+    }
+};
+
+/**
+ * Causes damage on a given unit
+ * data.strengths = {'hack':<float>, 'pierce':<float>, 'crush':<float>}
+ * data.target = <entity id>
+ * data.attacker = <entity id>
+ * data.multiplier = <float between 1 and 0>
+ * data.type = <string>
+ */
+Damage.prototype.CauseDamage = function(data)
+{
+    // Check the target can be damaged otherwise don't do anything.
+    var cmpDamageReceiver = Engine.QueryInterface(data.target, IID_DamageReceiver);
+    var cmpHealth = Engine.QueryInterface(data.target, IID_Health);
+    if (!cmpDamageReceiver || !cmpHealth)
+        return;
+
+    // Damage the target
+    var targetState = cmpDamageReceiver.TakeDamage(data.strengths.hack * data.multiplier, data.strengths.pierce * data.multiplier, data.strengths.crush * data.multiplier);
+
+    var cmpPromotion = Engine.QueryInterface(data.attacker, IID_Promotion);
+    var cmpLoot = Engine.QueryInterface(data.target, IID_Loot);
+    if (cmpPromotion && cmpLoot && cmpLoot.GetXp() > 0)
+        cmpPromotion.IncreaseXp(cmpLoot.GetXp() * -targetState.change / cmpHealth.GetMaxHitpoints());
+
+    // If the target was killed run some cleanup
+    if (targetState.killed)
+        this.TargetKilled(data.attacker, data.target);
+
+    // Post the network command (make it work in multiplayer)
+    Engine.PostMessage(data.target, MT_Attacked, {"attacker":data.attacker, "target":data.target, "type":data.type, "damage":-targetState.change});
+
+    // Play attacking sounds
+    PlaySound("attack_impact", data.attacker);
+};
+
+/**
+ * Gets entities near a give point for given players.
+ * origin = <Vector2D>
+ * radius = <int>
+ * players = <array>
+ * If players is not included, entities from all players are used.
+ */
+Damage.prototype.EntitiesNearPoint = function(origin, radius, players)
+{
+    // If there is insufficient data return an empty array.
+    if (!origin || !radius)
+        return [];
+
+    // If the players parameter is not specified use all players.
+    if (!players)
+    {
+        var playerEntities = Engine.QueryInterface(SYSTEM_ENTITY, IID_PlayerManager).GetAllPlayerEntities();
+        players = [];
+        for (let i = 0; i < playerEntities.length; ++i)
+            players.push(Engine.QueryInterface(playerEntities[i], IID_Player).GetPlayerID());
+    }
+
+    // Call RangeManager with dummy entity and return the result.
+    var rangeManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_RangeManager);
+    var rangeQuery = rangeManager.ExecuteQueryAroundPos(origin, 0, radius, players, IID_DamageReceiver);
+    return rangeQuery;
+};
+
+/**
+ * Called when some units kills something (another unit, building, animal etc)
+ * killerEntity = <entity id>
+ * targetEntity = <entity id>
+ */
+Damage.prototype.TargetKilled = function(killerEntity, targetEntity)
+{
+    // Add to killer statistics.
+    var cmpKillerPlayerStatisticsTracker = QueryOwnerInterface(killerEntity, IID_StatisticsTracker);
+    if (cmpKillerPlayerStatisticsTracker)
+        cmpKillerPlayerStatisticsTracker.KilledEntity(targetEntity);
+    // Add to loser statistics.
+    var cmpTargetPlayerStatisticsTracker = QueryOwnerInterface(targetEntity, IID_StatisticsTracker);
+    if (cmpTargetPlayerStatisticsTracker)
+        cmpTargetPlayerStatisticsTracker.LostEntity(targetEntity);
+
+    // If killer can collect loot, let's try to collect it.
+    var cmpLooter = Engine.QueryInterface(killerEntity, IID_Looter);
+    if (cmpLooter)
+        cmpLooter.Collect(targetEntity);
+};
+
+
+Damage.prototype.GetDeadEntityOwner = function(entityId)
+{
+    var cmpOwner = this.entityOwners.get(entityId);
+    this.entityOwners.delete(entityId);
+    return cmpOwner;
+};
+    
+Engine.RegisterSystemComponentType(IID_Damage, "Damage", Damage);

binaries/data/mods/public/simulation/components/interfaces/Damage.js

@@ +1 @@
+Engine.RegisterInterface("Damage");

binaries/data/mods/public/simulation/helpers/Damage.js

@@ -1 @@
-// Create global Damage object.
-var Damage = {};
-
-/**
- * Damages units around a given origin.
- * data.attacker = <entity id>
- * data.origin = <Vector2D>
- * data.radius = <int>
- * data.shape = <string>
- * data.strengths = {'hack':<float>, 'pierce':<float>, 'crush':<float>}
- * data.type = <string>
- * ***Optional Variables***
- * data.direction = <unit vector>
- * data.playersToDamage = <array of player ids>
- */
-Damage.CauseSplashDamage = function(data)
-{
-    // Get nearby entities and define variables
-    var nearEnts = Damage.EntitiesNearPoint(data.origin, data.radius, data.playersToDamage);
-    var damageMultiplier = 1;
-    // Cycle through all the nearby entities and damage it appropriately based on its distance from the origin.
-    for each (var entity in nearEnts)
-    {
-        var entityPosition = Engine.QueryInterface(entity, IID_Position).GetPosition2D();
-        if(data.shape == 'Circular') // circular effect with quadratic falloff in every direction
-        {
-            var squaredDistanceFromOrigin = data.origin.distanceToSquared(entityPosition);
-            damageMultiplier = 1 - squaredDistanceFromOrigin / (data.radius * data.radius);
-        }
-        else if(data.shape == 'Linear') // linear effect with quadratic falloff in two directions (only used for certain missiles)
-        {
-            // Get position of entity relative to splash origin.
-            var relativePos = entityPosition.sub(data.origin);
-
-            // The width of linear splash is one fifth of the normal splash radius.
-            var width = data.radius/5;
-
-            // Effectivly rotate the axis to align with the missile direction.
-            var parallelDist = relativePos.dot(data.direction); // z axis
-            var perpDist = Math.abs(relativePos.cross(data.direction)); // y axis
-
-            // Check that the unit is within the distance at which it will get damaged.
-            if (parallelDist > -width && perpDist < width) // If in radius, quadratic falloff in both directions
-                damageMultiplier = (data.radius * data.radius - parallelDist * parallelDist) / (data.radius * data.radius)
-                                 * (width * width - perpDist * perpDist) / (width * width);
-            else
-                damageMultiplier = 0;
-        }
-        else // In case someone calls this function with an invalid shape.
-        {
-            warn("The " + data.shape + " splash damage shape is not implemented!");
-        }
-        // Call CauseDamage which reduces the hitpoints, posts network command, plays sounds....
-        Damage.CauseDamage({"strengths":data.strengths, "target":entity, "attacker":data.attacker, "multiplier":damageMultiplier, "type":data.type + ".Splash"});
-    }
-};
-
-/**
- * Causes damage on a given unit
- * data.strengths = {'hack':<float>, 'pierce':<float>, 'crush':<float>}
- * data.target = <entity id>
- * data.attacker = <entity id>
- * data.multiplier = <float between 1 and 0>
- * data.type = <string>
- */
-Damage.CauseDamage = function(data)
-{
-    // Check the target can be damaged otherwise don't do anything.
-    var cmpDamageReceiver = Engine.QueryInterface(data.target, IID_DamageReceiver);
-    var cmpHealth = Engine.QueryInterface(data.target, IID_Health);
-    if (!cmpDamageReceiver || !cmpHealth)
-        return;
-
-    // Damage the target
-    var targetState = cmpDamageReceiver.TakeDamage(data.strengths.hack * data.multiplier, data.strengths.pierce * data.multiplier, data.strengths.crush * data.multiplier);
-
-    var cmpPromotion = Engine.QueryInterface(data.attacker, IID_Promotion);
-    var cmpLoot = Engine.QueryInterface(data.target, IID_Loot);
-    if (cmpPromotion && cmpLoot && cmpLoot.GetXp() > 0)
-        cmpPromotion.IncreaseXp(cmpLoot.GetXp() * -targetState.change / cmpHealth.GetMaxHitpoints());
-
-    // If the target was killed run some cleanup
-    if (targetState.killed)
-        Damage.TargetKilled(data.attacker, data.target);
-
-    // Post the network command (make it work in multiplayer)
-    Engine.PostMessage(data.target, MT_Attacked, {"attacker":data.attacker, "target":data.target, "type":data.type, "damage":-targetState.change});
-
-    // Play attacking sounds
-    PlaySound("attack_impact", data.attacker);
-};
-
-/**
- * Gets entities near a give point for given players.
- * origin = <Vector2D>
- * radius = <int>
- * players = <array>
- * If players is not included, entities from all players are used.
- */
-Damage.EntitiesNearPoint = function(origin, radius, players)
-{
-    // If there is insufficient data return an empty array.
-    if (!origin || !radius)
-        return [];
-
-    // If the players parameter is not specified use all players.
-    if (!players)
-    {
-        var playerEntities = Engine.QueryInterface(SYSTEM_ENTITY, IID_PlayerManager).GetAllPlayerEntities();
-        players = [];
-        for each (var entity in playerEntities)
-            players.push(Engine.QueryInterface(entity, IID_Player).GetPlayerID());
-    }
-
-    // Call RangeManager with dummy entity and return the result.
-    var rangeManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_RangeManager);
-    var rangeQuery = rangeManager.ExecuteQueryAroundPos(origin, 0, radius, players, IID_DamageReceiver);
-    return rangeQuery;
-};
-
-/**
- * Called when some units kills something (another unit, building, animal etc)
- * killerEntity = <entity id>
- * targetEntity = <entity id>
- */
-Damage.TargetKilled = function(killerEntity, targetEntity)
-{
-    // Add to killer statistics.
-    var cmpKillerPlayerStatisticsTracker = QueryOwnerInterface(killerEntity, IID_StatisticsTracker);
-    if (cmpKillerPlayerStatisticsTracker)
-        cmpKillerPlayerStatisticsTracker.KilledEntity(targetEntity);
-    // Add to loser statistics.
-    var cmpTargetPlayerStatisticsTracker = QueryOwnerInterface(targetEntity, IID_StatisticsTracker);
-    if (cmpTargetPlayerStatisticsTracker)
-        cmpTargetPlayerStatisticsTracker.LostEntity(targetEntity);
-
-    // If killer can collect loot, let's try to collect it.
-    var cmpLooter = Engine.QueryInterface(killerEntity, IID_Looter);
-    if (cmpLooter)
-        cmpLooter.Collect(targetEntity);
-};
-
-Engine.RegisterGlobal("Damage", Damage);
-