/// <summary>
/// Removes this element in the collison layer.
/// </summary>
public void RemoveInLayer()
{
if (parentLayer != null)
{
parentLayer.RemoveCollide(this);
parentLayer = null;
}
}
/// <summary>
/// Creates a new collision layer using the name.
/// </summary>
/// <param name="name">The layer name</param>
public CollisionLayer AddLayer(string name)
{
CollisionLayer newLayer = new CollisionLayer();
newLayer.Name = name;
newLayer.MakeId();
collideLayerContainer.Add(newLayer);
return(newLayer);
}
/// <summary>
/// It tests for collision among the collision elements which
/// have been registered to the collision layer and returns the result.
/// </summary>
/// <param name="collide">Source collsion element</param>
/// <param name="targetLayer">Target collison layer</param>
/// <param name="resultType">type of result</param>
/// <returns>A result report</returns>
public CollisionResult HitTest(CollideElement collide,
ref CollisionLayer targetLayer,
ResultType resultType)
{
CollisionResult result = null;
tempResult.Clear();
totalCollidingCount = 0;
if (activeOn == false)
{
return(null);
}
if (collide == null)
{
throw new ArgumentNullException("collide");
}
if (targetLayer == null)
{
throw new ArgumentNullException("targetLayer");
}
// checking all collisions in current collision layer
for (int i = 0; i < targetLayer.CollideCount; i++)
{
CollideElement targetCollide = targetLayer.GetCollide(i);
// Skip ifself
if (collide.Equals(targetCollide))
{
continue;
}
else if (collide.Id != 0 && targetCollide.Id != 0)
{
if (collide.Id == targetCollide.Id)
{
continue;
}
}
// If source collision is BoundingSphere
if (collide is CollideSphere)
{
CollideSphere sourceCollideSphere = collide as CollideSphere;
// Test with target sphere
if (targetCollide is CollideSphere)
{
CollideSphere targetCollideSphere =
targetCollide as CollideSphere;
TestSphereintersectSphere(sourceCollideSphere,
targetCollideSphere, ref tempResult);
}
// Test with target model
else if (targetCollide is CollideModel)
{
CollideModel targetCollideModel =
targetCollide as CollideModel;
TestSphereintersectModel(sourceCollideSphere,
targetCollideModel, ref tempResult);
}
// Test with target box
else if (targetCollide is CollideBox)
{
CollideBox targetCollideBox = targetCollide as CollideBox;
TestSphereintersectBox(sourceCollideSphere,
targetCollideBox, ref tempResult);
}
// Test with target ray
if (targetCollide is CollideRay)
{
CollideRay targetCollideRay =
targetCollide as CollideRay;
TestRayintersectSphere(targetCollideRay,
sourceCollideSphere, ref tempResult);
}
}
// If source collision is Ray
else if (collide is CollideRay)
{
CollideRay sourceCollideRay = collide as CollideRay;
// Test with target model
if (targetCollide is CollideModel)
{
CollideModel targetCollideModel =
targetCollide as CollideModel;
TestRayintersectModel(sourceCollideRay,
targetCollideModel, ref tempResult);
}
// Test with target sphere
else if (targetCollide is CollideSphere)
{
CollideSphere targetCollideSphere =
targetCollide as CollideSphere;
TestRayintersectSphere(sourceCollideRay,
targetCollideSphere, ref tempResult);
}
// Test with target box
else if (targetCollide is CollideBox)
{
CollideBox targetCollideBox = targetCollide as CollideBox;
TestRayintersectBox(sourceCollideRay,
targetCollideBox, ref tempResult);
}
}
// If source collision is Ray
else if (collide is CollideBox)
{
CollideBox sourceCollideBox = collide as CollideBox;
// Test with target sphere
if (targetCollide is CollideSphere)
{
CollideSphere targetCollideSphere =
targetCollide as CollideSphere;
TestSphereintersectBox(targetCollideSphere,
sourceCollideBox, ref tempResult);
}
// Test with target box
else if (targetCollide is CollideBox)
{
CollideBox targetCollideBox = targetCollide as CollideBox;
TestBoxintersectBox(sourceCollideBox,
targetCollideBox, ref tempResult);
}
// Test with target ray
else if (targetCollide is CollideRay)
{
CollideRay targetCollideRay = targetCollide as CollideRay;
TestRayintersectBox(targetCollideRay,
sourceCollideBox, ref tempResult);
}
}
// To find the nearest detected collision.
if (resultType == ResultType.NearestOne)
{
if (tempResult.collideCount > 0)
{
if (result == null)
{
result = new CollisionResult();
result.distance = float.MaxValue;
}
if (result.distance > tempResult.distance)
{
tempResult.CopyTo(ref result);
}
}
}
}
return(result);
}
/// <summary>
/// It tests for collision among the collision elements which
/// have been registered to the collision layer and returns the result.
/// </summary>
/// <param name="collide">Source collsion element</param>
/// <param name="targetLayer">Target collison layer</param>
/// <param name="resultType">type of result</param>
/// <returns>A result report</returns>
public CollisionResult HitTest(CollideElement collide,
ref CollisionLayer targetLayer,
ResultType resultType)
{
CollisionResult result = null;
tempResult.Clear();
totalCollidingCount = 0;
if (activeOn == false)
return null;
if (collide == null)
{
throw new ArgumentNullException("collide");
}
if (targetLayer == null)
{
throw new ArgumentNullException("targetLayer");
}
// checking all collisions in current collision layer
for (int i = 0; i < targetLayer.CollideCount; i++)
{
CollideElement targetCollide = targetLayer.GetCollide(i);
// Skip ifself
if (collide.Equals(targetCollide))
{
continue;
}
else if (collide.Id != 0 && targetCollide.Id != 0)
{
if (collide.Id == targetCollide.Id)
continue;
}
// If source collision is BoundingSphere
if (collide is CollideSphere)
{
CollideSphere sourceCollideSphere = collide as CollideSphere;
// Test with target sphere
if (targetCollide is CollideSphere)
{
CollideSphere targetCollideSphere =
targetCollide as CollideSphere;
TestSphereintersectSphere(sourceCollideSphere,
targetCollideSphere, ref tempResult);
}
// Test with target model
else if (targetCollide is CollideModel)
{
CollideModel targetCollideModel =
targetCollide as CollideModel;
TestSphereintersectModel(sourceCollideSphere,
targetCollideModel, ref tempResult);
}
// Test with target box
else if (targetCollide is CollideBox)
{
CollideBox targetCollideBox = targetCollide as CollideBox;
TestSphereintersectBox(sourceCollideSphere,
targetCollideBox, ref tempResult);
}
// Test with target ray
if (targetCollide is CollideRay)
{
CollideRay targetCollideRay =
targetCollide as CollideRay;
TestRayintersectSphere(targetCollideRay,
sourceCollideSphere, ref tempResult);
}
}
// If source collision is Ray
else if (collide is CollideRay)
{
CollideRay sourceCollideRay = collide as CollideRay;
// Test with target model
if (targetCollide is CollideModel)
{
CollideModel targetCollideModel =
targetCollide as CollideModel;
TestRayintersectModel(sourceCollideRay,
targetCollideModel, ref tempResult);
}
// Test with target sphere
else if (targetCollide is CollideSphere)
{
CollideSphere targetCollideSphere =
targetCollide as CollideSphere;
TestRayintersectSphere(sourceCollideRay,
targetCollideSphere, ref tempResult);
}
// Test with target box
else if (targetCollide is CollideBox)
{
CollideBox targetCollideBox = targetCollide as CollideBox;
TestRayintersectBox(sourceCollideRay,
targetCollideBox, ref tempResult);
}
}
// If source collision is Ray
else if (collide is CollideBox)
{
CollideBox sourceCollideBox = collide as CollideBox;
// Test with target sphere
if (targetCollide is CollideSphere)
{
CollideSphere targetCollideSphere =
targetCollide as CollideSphere;
TestSphereintersectBox(targetCollideSphere,
sourceCollideBox, ref tempResult);
}
// Test with target box
else if (targetCollide is CollideBox)
{
CollideBox targetCollideBox = targetCollide as CollideBox;
TestBoxintersectBox(sourceCollideBox,
targetCollideBox, ref tempResult);
}
// Test with target ray
else if (targetCollide is CollideRay)
{
CollideRay targetCollideRay = targetCollide as CollideRay;
TestRayintersectBox(targetCollideRay,
sourceCollideBox, ref tempResult);
}
}
// To find the nearest detected collision.
if (resultType == ResultType.NearestOne)
{
if (tempResult.collideCount > 0)
{
if(result == null)
{
result = new CollisionResult();
result.distance = float.MaxValue;
}
if (result.distance > tempResult.distance)
{
tempResult.CopyTo(ref result);
}
}
}
}
return result;
}
/// <summary>
/// Creates a new collision layer using the name.
/// </summary>
/// <param name="name">The layer name</param>
public CollisionLayer AddLayer(string name)
{
CollisionLayer newLayer = new CollisionLayer();
newLayer.Name = name;
newLayer.MakeId();
collideLayerContainer.Add(newLayer);
return newLayer;
}
/// <summary>
/// drops weapon at specified position.
/// </summary>
/// <param name="position">new drop position</param>
/// <param name="parent">new scene node</param>
/// <param name="layer">new collision layer</param>
public void Drop(Vector3 position, NodeBase parent, CollisionLayer layer)
{
// Detached scene node from owner
AttachOwner(parent);
// Add a collision
if( layer != null)
layer.AddCollide(this.Collide);
DroppedModel.SetRootAxis(
Matrix.CreateRotationX(MathHelper.ToRadians(-90.0f)));
this.Position = position;
this.isDropped = true;
this.Enabled = true;
this.Visible = true;
}
/// <summary>
/// checks for the collision at the aiming angle.
/// If it collides with an enemy mech, calls ActionHit() function.
/// Weapon’s collision checks the world and enemy both.
/// When playing firing particle, the number of the weapon’s model
/// must be considered.
/// Since the player’s weapon is a dual weapon system, there are two models.
/// However, for enemies, there are enemies with single weapon system.
/// Therefore, it plays firing particle at the gun point
/// as many as the number of models.
/// </summary>
/// <param name="position">the start position of firing</param>
/// <param name="direction">the direction of firing</param>
/// <param name="distance">the range of firing</param>
/// <param name="targetCollisionLayer">target collision layer</param>
/// <param name="worldCollisionLayer">world collision layer</param>
/// <param name="fireBone1">the fire matrix of first weapon</param>
/// <param name="fireBone2">the fire matrix of second weapon</param>
/// <returns></returns>
public bool Fire(Vector3 position, Vector3 direction, float distance,
ref CollisionLayer targetCollisionLayer,
ref CollisionLayer worldCollisionLayer,
Matrix? fireBone1, Matrix? fireBone2)
{
bool hit = false;
Vector3 firePosition = Vector3.Zero;
Vector3 targetPosition = position + (direction * distance);
SoundTrack fireSound = SoundTrack.Count;
ParticleType fireParticle = ParticleType.Count;
ParticleType unitHitParticle = ParticleType.Count;
ParticleType worldHitParticle = ParticleType.Count;
Matrix fixedAxis = Matrix.CreateRotationX(MathHelper.ToRadians(-90.0f));
this.state = WeaponState.Firing;
if (this.currentAmmo <= 0) return hit;
// Reduces a bullet.
this.currentAmmo--;
switch (this.WeaponType)
{
case WeaponType.PlayerMachineGun:
{
fireSound = SoundTrack.PlayerMachineGunFire;
fireParticle = ParticleType.PlayerMachineGunFire;
unitHitParticle = ParticleType.PlayerMachineGunUnitHit;
worldHitParticle = ParticleType.PlayerMachineGunWorldHit;
}
break;
case WeaponType.PlayerShotgun:
{
fireSound = SoundTrack.PlayerShotgunFire;
fireParticle = ParticleType.PlayerShotgunFire;
unitHitParticle = ParticleType.PlayerShotgunUnitHit;
worldHitParticle = ParticleType.PlayerShotgunWorldHit;
}
break;
case WeaponType.PlayerHandgun:
{
fireSound = SoundTrack.PlayerHandgunFire;
fireParticle = ParticleType.PlayerHandgunFire;
unitHitParticle = ParticleType.PlayerHandgunUnitHit;
worldHitParticle = ParticleType.PlayerHandgunWorldHit;
}
break;
case WeaponType.CameleerGun:
{
fireSound = SoundTrack.CameleerFire;
fireParticle = ParticleType.EnemyGunFire;
unitHitParticle = ParticleType.EnemyGunUnitHit;
worldHitParticle = ParticleType.EnemyGunWorldHit;
}
break;
case WeaponType.MaomingGun:
{
fireSound = SoundTrack.MaomingFire;
fireParticle = ParticleType.PlayerMachineGunFire;
unitHitParticle = ParticleType.EnemyGunUnitHit;
worldHitParticle = ParticleType.EnemyGunWorldHit;
}
break;
case WeaponType.DuskmasCannon:
{
fireSound = SoundTrack.DuskmasFire;
fireParticle = ParticleType.EnemyCannonFire;
unitHitParticle = ParticleType.EnemyCannonUnitHit;
worldHitParticle = ParticleType.EnemyCannonWorldHit;
}
break;
case WeaponType.TigerCannon:
{
fireSound = SoundTrack.TankFire;
fireParticle = ParticleType.EnemyCannonFire;
unitHitParticle = ParticleType.EnemyCannonUnitHit;
worldHitParticle = ParticleType.EnemyCannonWorldHit;
}
break;
case WeaponType.HammerCannon:
{
fireSound = SoundTrack.HammerFire;
fireParticle = ParticleType.EnemyCannonFire;
unitHitParticle = ParticleType.EnemyCannonUnitHit;
worldHitParticle = ParticleType.EnemyCannonWorldHit;
}
break;
case WeaponType.PhantomMelee:
{
fireSound = SoundTrack.BossMelee;
fireParticle = ParticleType.Count;
unitHitParticle = ParticleType.EnemyMeleeUnitHit;
worldHitParticle = ParticleType.EnemyCannonWorldHit;
}
break;
}
if (this.WeaponType != WeaponType.PlayerShotgun &&
this.WeaponType != WeaponType.PlayerHandgun)
{
StopFireSound();
}
// Play a weapon firing sound
if (RobotGameGame.CurrentGameLevel.Info.GamePlayType ==
GamePlayTypeId.Versus)
{
soundFire = GameSound.Play3D(fireSound,
RobotGameGame.SinglePlayer.Emitter);
}
else
{
soundFire = GameSound.Play3D(fireSound, this.OwnerUnit.Emitter);
}
// Play firing particles
if (specData.ModelAlone )
{
// Multi fire
if (this.SpecData.FireCount == 1)
{
for (int i = 0; i < SpecData.ModelCount; i++)
{
int boneIdx = indexWeaponFireDummy[i];
Matrix boneTransform = modelWeapon[i].BoneTransforms[boneIdx];
GameParticle.PlayParticle(fireParticle, boneTransform,
fixedAxis);
}
// In case of two handed weapons, the index is changed
// so that the tracer bullet will fire alternatively.
if (dummySwichingIndex == 0)
dummySwichingIndex = 1;
else
dummySwichingIndex = 0;
int boneIndex = indexWeaponFireDummy[dummySwichingIndex];
firePosition =
modelWeapon[dummySwichingIndex].BoneTransforms[
boneIndex].Translation;
}
// Delayed fire
else
{
if (this.fireCount == 0)
{
GameParticle.PlayParticle(fireParticle, this.RightFireBone,
fixedAxis);
firePosition = this.RightFireBone.Translation;
}
else if (this.fireCount == 1)
{
GameParticle.PlayParticle(fireParticle, this.LeftFireBone,
fixedAxis);
firePosition = this.LeftFireBone.Translation;
}
}
}
else
{
Matrix fireMatrix = Matrix.Identity;
if (fireBone1 != null)
GameParticle.PlayParticle(fireParticle, (Matrix)fireBone1,
fixedAxis);
if (fireBone2 != null)
GameParticle.PlayParticle(fireParticle, (Matrix)fireBone2,
fixedAxis);
if (fireBone1 != null && fireBone2 != null)
{
// In case of two handed weapons, the index is changed
// so that the tracer bullet will fire alternatively.
if (dummySwichingIndex == 0)
{
fireMatrix = (Matrix)fireBone1;
dummySwichingIndex = 1;
}
else
{
fireMatrix = (Matrix)fireBone2;
dummySwichingIndex = 0;
}
}
else if( fireBone1 != null)
fireMatrix = (Matrix)fireBone1;
else if (fireBone2 != null)
fireMatrix = (Matrix)fireBone2;
firePosition = fireMatrix.Translation;
}
// Hit testing
CollisionResult collideResult = FireHitTest(position, direction, distance,
ref targetCollisionLayer,
ref worldCollisionLayer);
if (collideResult != null)
{
// Play hitting particle
{
ParticleType hitParticle = ParticleType.Count;
// To player
if (collideResult.detectedCollide.Owner is GameUnit)
{
GameUnit detectGameUnit =
collideResult.detectedCollide.Owner as GameUnit;
// Calculate a random intersect point for
// hitting particle in unit sphere
CollideSphere sphere =
collideResult.detectedCollide as CollideSphere;
switch (this.WeaponType)
{
case WeaponType.PlayerMachineGun:
case WeaponType.PlayerShotgun:
case WeaponType.PlayerHandgun:
case WeaponType.CameleerGun:
case WeaponType.MaomingGun:
{
Vector3 dir = this.OwnerUnit.Position -
detectGameUnit.Position;
dir.Normalize();
dir.X += HelperMath.RandomNormal2();
dir.Y += HelperMath.RandomNormal2();
dir.Normalize();
collideResult.normal = (Vector3)dir;
collideResult.intersect =
sphere.BoundingSphere.Center +
((Vector3)dir * sphere.Radius);
}
break;
case WeaponType.DuskmasCannon:
case WeaponType.HammerCannon:
case WeaponType.TigerCannon:
case WeaponType.PhantomMelee:
{
Vector3 dir = this.OwnerUnit.Position -
sphere.BoundingSphere.Center;
dir.Normalize();
collideResult.normal = (Vector3)dir;
collideResult.intersect =
sphere.BoundingSphere.Center;
}
break;
}
hitParticle = unitHitParticle;
targetPosition = (Vector3)collideResult.intersect;
}
// To world
else
{
hitParticle = worldHitParticle;
targetPosition = (Vector3)collideResult.intersect;
}
if (collideResult.normal != null)
{
GameParticle.PlayParticle(hitParticle,
(Vector3)collideResult.intersect,
(Vector3)collideResult.normal,
Matrix.CreateRotationX(MathHelper.ToRadians(-90.0f)));
}
else
{
GameParticle.PlayParticle(hitParticle,
Matrix.CreateTranslation((Vector3)collideResult.intersect),
Matrix.CreateRotationX(MathHelper.ToRadians(-90.0f)));
}
}
// Hit to other mech
if (collideResult.detectedCollide.Owner is GameUnit)
{
GameUnit HitUnit = (GameUnit)collideResult.detectedCollide.Owner;
// Call hit function to unit
HitUnit.ActionHit(this.OwnerUnit);
if (HitUnit.IsDead )
{
if (this.OwnerUnit is GamePlayer)
{
// If the versus mode, you'll be get kill point
if( RobotGameGame.CurrentStage is VersusStageScreen)
{
VersusStageScreen stage =
RobotGameGame.CurrentStage as VersusStageScreen;
GamePlayer player = this.OwnerUnit as GamePlayer;
player.KillPoint++;
stage.DisplayKillPoint((int)player.PlayerIndex,
player.KillPoint);
}
}
}
hit = true;
}
}
// Fire the tracer bullet particle
if( this.specData.TracerBulletFire )
{
RobotGameGame.CurrentStage.TracerBulletManager.Fire(0,
firePosition,
targetPosition,
this.specData.TracerBulletSpeed,
this.specData.TracerBulletLength,
this.specData.TracerBulletThickness,
true);
}
// Cannot fire
return hit;
}
/// <summary>
/// checks for the weapon firing collision.
/// When collision check succeeds, returns a result report.
/// If not, returns null.
/// </summary>
/// <param name="position">the start position of firing</param>
/// <param name="direction">the direction of firing</param>
/// <param name="distance">the range of firing</param>
/// <param name="targetCollisionLayer">target collision layer</param>
/// <param name="worldCollisionLayer">world collision layer</param>
/// <returns>result report</returns>
protected static CollisionResult FireHitTest(Vector3 position,
Vector3 direction,
float distance,
ref CollisionLayer targetCollisionLayer,
ref CollisionLayer worldCollisionLayer)
{
bool doHit = false;
CollideRay collideRay = new CollideRay(position, direction);
// checks with enemies.
CollisionResult fireResult = FrameworkCore.CollisionContext.HitTest(
collideRay,
ref targetCollisionLayer,
ResultType.NearestOne);
if (fireResult != null)
{
if (fireResult.distance <= distance)
{
// Hit unit
doHit = true;
}
}
// checks with world.
CollisionResult worldResult = FrameworkCore.CollisionContext.HitTest(
collideRay,
ref worldCollisionLayer,
ResultType.NearestOne);
if (worldResult != null)
{
// Hit world
if (worldResult.distance <= distance)
{
if (doHit)
{
// closer world
if (worldResult.distance < fireResult.distance)
{
return worldResult;
}
}
else
{
return worldResult;
}
}
}
if (doHit)
{
return fireResult;
}
return null;
}
/// <summary>
/// initializes with collison layer and creates a simple shadow.
/// </summary>
public override void Initialize()
{
base.Initialize();
colLayerMoveWorld =
RobotGameGame.CurrentGameLevel.CollisionLayerMoveWorld;
colLayerHitWorld =
RobotGameGame.CurrentGameLevel.CollisionLayerHitWorld;
colLayerFriendlyMech =
RobotGameGame.CurrentGameLevel.CollisionLayerFriendlyMech;
colLayerEnemyMech =
RobotGameGame.CurrentGameLevel.CollisionLayerEnemyMech;
colLayerAllMech =
RobotGameGame.CurrentGameLevel.CollisionLayerAllMech;
colLayerItems =
RobotGameGame.CurrentGameLevel.CollisionLayerItems;
colLayerVersusTeam = RobotGameGame.CurrentGameLevel.CollisionVersusTeam;
// creates a simple shadow.
GameResourceTexture2D resource =
FrameworkCore.ResourceManager.LoadTexture("Textures/shadow");
simpleShadow = new GameQuad(new Vector3(0.0f, 0.02f, 0.0f),
Vector3.Up, Vector3.Forward, 3.0f, 3.0f);
simpleShadow.Name = "simple shadow";
simpleShadow.Texture = resource.Texture2D;
simpleShadow.LightingEnabled = false;
simpleShadow.Alpha = 0.6f;
simpleShadow.AlphaBlendEnable = true;
simpleShadow.ReferenceAlpha = 0;
simpleShadow.DepthBufferEnable = true;
simpleShadow.DepthBufferWriteEnable = true;
simpleShadow.DepthBufferFunction = CompareFunction.Less;
simpleShadow.SourceBlend = Blend.SourceAlpha;
simpleShadow.DestinationBlend = Blend.InverseSourceAlpha;
simpleShadow.BlendFunction = BlendFunction.Add;
simpleShadow.AlphaFunction = CompareFunction.Greater;
simpleShadow.CullMode = CullMode.CullCounterClockwiseFace;
this.AddChild(simpleShadow);
}
