protected static bool handleEnemyMovement(Collider mover, Collider other, Vector2 deltaPosition, out Vector2 allowedMovement)
{
switch (other.m_type)
{
case ColliderType.Samus:
allowedMovement = deltaPosition;
((EnemyController)mover.m_owner).handleSamusHit((PlayerController)other.m_owner);
return true;
case ColliderType.Projectile:
allowedMovement = deltaPosition;
((EnemyController)mover.m_owner).handleProjectileHit((ProjectileController)other.m_owner);
return true;
case ColliderType.Enemy:
case ColliderType.FrozenEnemy:
case ColliderType.InvincibleEnemy:
allowedMovement = deltaPosition;
return true;
case ColliderType.Scenery:
allowedMovement = scaleBackVelocity(mover, other, deltaPosition);
return true;
case ColliderType.Effect:
allowedMovement = deltaPosition;
return true;
case ColliderType.Trigger:
allowedMovement = deltaPosition;
return true;
case ColliderType.Transition:
allowedMovement = scaleBackVelocity(mover, other, deltaPosition);
return true;
default:
throw new Exception("Enemy moved into something it shouldn't have");
}
}
private Color m_tint; // a tint to put on the decoration
#endregion Fields
#region Constructors
/// <summary>
/// Create a new decoration
/// </summary>
/// <param name="decorationSetTexture">Texture containing this decoration's graphic</param>
/// <param name="indexNumber">An index into the texture, which finds this decoration's location in it</param>
/// <param name="drawPos">Where in the area the decoration should be drawn</param>
/// <param name="di">XML information about properties of the Decoration (load from Content)</param>
/// <param name="tint">Color tint to apply to the graphic</param>
public Decoration(GameTexture decorationSetTexture, int indexNumber, Vector2 drawPos, DecorationInfo di, Color tint)
{
this.m_texture = decorationSetTexture;
this.m_drawIndex = indexNumber;
this.m_drawPosition = drawPos;
Rectangle bounds = new Rectangle(
di.collision.X - di.graphic.X + (int)drawPos.X,
di.collision.Y - di.graphic.Y + (int)drawPos.Y,
di.collision.Width,
di.collision.Height);
this.m_collider = new Collider(this, bounds, ColliderType.Scenery);
this.m_tint = tint;
}
public ProjectileController(IGameObject owner, Vector2 position, Vector2 velocity, ProjectileType type, int damage, String texturePath)
{
Rectangle bounds = new Rectangle((int)position.X - 1, (int)position.Y - 1, 3, 3);
m_collider = new Collider(this, bounds, ColliderType.Projectile);
Owner = owner;
Velocity = velocity;
Damage = damage;
Tint = Color.White;
Freezes = false;
m_position = position;
m_type = type;
m_texture = new GameTexture(texturePath);
}
public ARefillController(Vector2 position, string refillType)
{
this.IsActive = true;
m_position = position;
m_refillType = refillType;
m_refillArea = new Rectangle(s_refillArea.X, s_refillArea.Y, s_refillArea.Width, s_refillArea.Height);
m_refillArea.Offset((int)m_position.X, (int)m_position.Y);
Rectangle bounds = new Rectangle(-40, -120, 80, 120);
m_collider = new Collider(this, bounds, ColliderType.Scenery);
m_animationController =
new AnimationController(
"Animation/Data/MissionObjects",
"Animation/Textures/MissionObjects",
AnimationName);
}
/// <summary>
/// Determines how to handle various types of collisions.
/// </summary>
/// <param name="mover">Collider that is moving</param>
/// <param name="other">Collider which was moved into</param>
/// <param name="deltaPosition">Attempted movement by the mover</param>
/// <param name="allowedMovement">Out param - amount of movement which is allowed</param>
/// <returns>True if any movement is allowed, false otherwise</returns>
public static bool handleMovement(Collider mover, Collider other, Vector2 deltaPosition, out Vector2 allowedMovement)
{
switch (mover.m_type)
{
case ColliderType.Samus:
return handleSamusMovement(mover, other, deltaPosition, out allowedMovement);
case ColliderType.Enemy:
case ColliderType.FrozenEnemy:
case ColliderType.InvincibleEnemy:
return handleEnemyMovement(mover, other, deltaPosition, out allowedMovement);
case ColliderType.Projectile:
return handleProjectileMovement(mover, other, deltaPosition, out allowedMovement);
case ColliderType.Effect:
allowedMovement = deltaPosition;
return true;
//case ColliderType.Movable:
// break;
default:
throw new Exception("Something's moving that shouldn't be");
}
return false;
}
public ChozoStatue(Vector2 position, Item item, Direction facing)
{
if (facing != Direction.Left && facing != Direction.Right)
{
facing = Direction.Right;
}
m_position = position;
m_item = item;
m_facing = facing;
m_statueAnimation = new AnimationController(
"Animation/Data/MissionObjects",
"Animation/Textures/MissionObjects",
StatueAnimation);
m_itemAnimation = new AnimationController(
"Animation/Data/MissionObjects",
"Animation/Textures/MissionObjects",
ItemAnimation);
Rectangle bounds;
if (m_facing == Direction.Left)
{
bounds = new Rectangle(
(int)m_position.X - 60,
(int)m_position.Y - 120,
40,
40);
}
else
{
bounds = new Rectangle(
(int)m_position.X + 20,
(int)m_position.Y - 120,
40,
40);
}
m_collider = new Collider(this, bounds, ColliderType.Scenery);
}
/// <summary>
/// Protected ctor - use the construct() method
/// </summary>
protected CharacterController(
Vector2 startPosition,
int speed,
Rectangle bounds,
ColliderType type,
float animationScale,
string animationDataPath,
string animationTexturePath)
{
this.m_previousPosition = startPosition;
this.m_position = startPosition;
this.m_speedMax = speed;
bounds.Offset((int)m_position.X, (int)m_position.Y);
this.m_collider = new Collider(this, bounds, type);
this.AnimationController = new AnimationController(animationDataPath, animationTexturePath);
this.AnimationController.ActionTriggered += new ActionTriggeredEventHandler(this.handleAction);
this.AnimationController.Scale = animationScale;
this.GravityEffect = Gravity.Normal;
this.Health = this.MaxHealth;
this.m_previousAngle = (float)Math.PI / 2;
}
public void handleImpact(Collider mover)
{
PlayerController samus = mover.m_owner as PlayerController;
if (samus == null) return;
samus.Inventory.AddItem(m_item);
m_state = State.ItemTaken;
m_collider.m_type = ColliderType.Effect;
}
/// <summary>
/// Removes a particular collider from this CollisionDetector
/// </summary>
/// <param name="ci">Collider to remove</param>
public void remove(Collider ci)
{
m_tree.Remove(ci);
ci.forCollisionDetectorUseOnly(null);
}
/// <summary>
/// Adds a collider to the detector and marks that collider as being
/// owned by this detector
/// </summary>
/// <param name="ci">Collider to register</param>
public void register(Collider ci)
{
ci.forCollisionDetectorUseOnly(this);
m_tree.Insert(ci);
}
/// <summary>
/// Moves a collider in the direction provided until it hits something
/// </summary>
/// <param name="mover">Collider which is moving</param>
/// <param name="deltaPosition">Change in position the collider is trying to make</param>
public void handleMovement(Collider mover, Vector2 deltaPosition)
{
double areaOfMovementX1 = Math.Min(mover.Bounds.X, mover.Bounds.X + deltaPosition.X);
double areaOfMovementY1 = Math.Min(mover.Bounds.Y, mover.Bounds.Y + deltaPosition.Y);
double areaOfMovementX2 = Math.Max(mover.Bounds.X + mover.Bounds.Width, mover.Bounds.X + mover.Bounds.Width + deltaPosition.X);
double areaOfMovementY2 = Math.Max(mover.Bounds.Y + mover.Bounds.Height, mover.Bounds.Y + mover.Bounds.Height + deltaPosition.Y);
DoubleRect areaOfMovement = new DoubleRect(
areaOfMovementX1,
areaOfMovementY1,
areaOfMovementX2 - areaOfMovementX1,
areaOfMovementY2 - areaOfMovementY1);
//DoubleRect newbounds = mover.Bounds + deltaPosition;
List<Collider> collisions = m_tree.Query(areaOfMovement);
List<Collider>.Enumerator i = collisions.GetEnumerator();
Vector2 allowedMovement = deltaPosition;
Vector2 temp;
while (i.MoveNext())
{
// we will usually collide with our old position - ignore that case
if (i.Current != mover)
{
bool canMove = CollisionHandler.handleMovement(mover, i.Current, deltaPosition, out temp);
if (!canMove)
{
return; // don't allow movement
}
if (allowedMovement.X > 0.0f)
allowedMovement.X = Math.Min(allowedMovement.X, temp.X);
else if (allowedMovement.X < 0.0f)
allowedMovement.X = Math.Max(allowedMovement.X, temp.X);
if (allowedMovement.Y > 0.0f)
allowedMovement.Y = Math.Min(allowedMovement.Y, temp.Y);
else if (allowedMovement.Y < 0.0f)
allowedMovement.Y = Math.Max(allowedMovement.Y, temp.Y);
}
}
mover.move(allowedMovement);
}
public abstract void handleImpact(Collider mover);
public ATrigger(Rectangle bounds)
{
m_collider = new Collider(this, bounds, ColliderType.Trigger);
m_position = new Vector2(m_collider.Bounds.Center().X, m_collider.Bounds.Center().Y);
}
/// <summary>
/// Certain tile #s in a TileSet may be marked as impassable. This function looks up those
/// numbers and makes instances of those tiles in the Zone impassable by registering the
/// appropriate collision box.
/// </summary>
public void initializeTileColliders()
{
foreach (Point globalScreenCoord in PositionsOwned)
{
Point zoneScreenCoord = getLocalScreenFromGlobalScreen(globalScreenCoord);
for (int i = 0; i < SCREEN_WIDTH_IN_TILES; ++i)
{
for (int j = 0; j < SCREEN_HEIGHT_IN_TILES; ++j)
{
if (!TileSet.tileInfos[Tiles[globalScreenCoord][i, j]].passable &&
!FakeTiles.Contains(new KeyValuePair<Point,Point>(globalScreenCoord, new Point(i,j))))
{
Rectangle bounds = getTileRectangle(zoneScreenCoord, i, j);
Collider ci = new Collider(null, bounds, ColliderType.Scenery);
CollisionDetector.register(ci);
}
else if (i == 0 && !this.PositionsOwned.Contains(new Point (globalScreenCoord.X-1, globalScreenCoord.Y)))
{
Rectangle bounds = getTileRectangle(zoneScreenCoord, i-1, j);
Collider ci = new Collider(null, bounds, ColliderType.Scenery);
CollisionDetector.register(ci);
}
else if (i == SCREEN_WIDTH_IN_TILES-1 && !this.PositionsOwned.Contains(new Point (globalScreenCoord.X+1, globalScreenCoord.Y)))
{
Rectangle bounds = getTileRectangle(zoneScreenCoord, i+1, j);
Collider ci = new Collider(null, bounds, ColliderType.Scenery);
CollisionDetector.register(ci);
}
else if (j == 0 && !this.PositionsOwned.Contains(new Point (globalScreenCoord.X, globalScreenCoord.Y-1)))
{
Rectangle bounds = getTileRectangle(zoneScreenCoord, i, j-1);
Collider ci = new Collider(null, bounds, ColliderType.Scenery);
CollisionDetector.register(ci);
}
else if (j == SCREEN_HEIGHT_IN_TILES-1 && !this.PositionsOwned.Contains(new Point (globalScreenCoord.X, globalScreenCoord.Y+1)))
{
Rectangle bounds = getTileRectangle(zoneScreenCoord, i, j+1);
Collider ci = new Collider(null, bounds, ColliderType.Scenery);
CollisionDetector.register(ci);
}
}
}
}
}
/// <summary>
/// Scales back an attempted movement so that two colliders don't intersect.
/// </summary>
/// <param name="mover">Collider that is moving</param>
/// <param name="other">Collider that the movement shouldn't be able to move into</param>
/// <param name="deltaPosition">Amount that mover is trying to move</param>
/// <returns>How much mover can move so as not to intersect other</returns>
protected static Vector2 scaleBackVelocity(Collider mover, Collider other, Vector2 deltaPosition)
{
// whew! a lot work just to make it so that you can slide along objects when
// using multiple directions
const float EPS = 0.01f;
DoubleRect dr2 = other.Bounds;
double reducedX = deltaPosition.X;
double reducedY = deltaPosition.Y;
// Project x only movement and fix x velocity
Vector2 temp = new Vector2(deltaPosition.X, 0);
DoubleRect dr1 = mover.Bounds + temp;
if (dr1.IntersectsWith(dr2))
if (deltaPosition.X > 0 && dr1.X + dr1.Width >= dr2.X) // moving right, rhs collision
{
double overlap = dr1.X + dr1.Width - dr2.X + EPS;
reducedX = Math.Max(0.0f, deltaPosition.X - overlap);
}
else if (deltaPosition.X < 0 && dr1.X <= dr2.X + dr2.Width) // moving left, lhs collision
{
double overlap = (dr2.X + dr2.Width) - dr1.X + EPS;
reducedX = Math.Min(0.0f, deltaPosition.X + overlap);
}
// Project y only movement and fix y velocity
temp = new Vector2(0, deltaPosition.Y);
dr1 = mover.Bounds + temp;
if (dr1.IntersectsWith(dr2))
if (deltaPosition.Y > 0 && dr1.Y + dr1.Height >= dr2.Y) // moving down, bottom collision
{
double overlap = dr1.Y + dr1.Height - dr2.Y + EPS;
reducedY = Math.Max(0.0f, deltaPosition.Y - overlap);
}
else if (deltaPosition.Y < 0 && dr1.Y <= dr2.Y + dr2.Height) // moving up, top collision
{
double overlap = (dr2.Y + dr2.Height) - dr1.Y + EPS;
reducedY = Math.Min(0.0f, deltaPosition.Y + overlap);
}
// if neither X nor Y reduced, must be a corner collision
// for now, we just won't allow this (if we allow, you can get stuck, but not bad)
if (reducedX == deltaPosition.X && reducedY == deltaPosition.Y)
{
return Vector2.Zero;
}
return new Vector2((float)reducedX, (float)reducedY);
}