// If any objects are moving faster than the maximum allowed speed,
// sets their speed to the maximum allowed speed
private void MaximumVelocityCheck(PhysicsManager world, PhysObject po)
{
// Not a projectile
if (!(po is Projectile))
{
if (LinearVelocity.X > world.MaximumHorizontalSpeed)
{
LinearVelocity = new Vector2(world.MaximumHorizontalSpeed, LinearVelocity.Y);
}
if (LinearVelocity.X < (world.MaximumHorizontalSpeed * -1))
{
LinearVelocity = new Vector2(world.MaximumHorizontalSpeed * -1, LinearVelocity.Y);
}
if (LinearVelocity.Y > world.MaximumVerticalSpeed)
{
LinearVelocity = new Vector2(LinearVelocity.X, world.MaximumVerticalSpeed);
}
if (LinearVelocity.Y < (world.MaximumVerticalSpeed * -1))
{
LinearVelocity = new Vector2(LinearVelocity.X, world.MaximumVerticalSpeed * -1);
}
}
}
// Friction only applied if the body is not in the air
private void ApplyFriction(PhysicsManager world, PhysObject po)
{
Vector2 friction = new Vector2(0);
if (LinearVelocity.X == 0)
{
float staticFrictionCoefficient = 0.7f;
friction = world.Gravity * staticFrictionCoefficient;
}
else
{
float kineticFrictionCoefficient = po.FrictionCoefficient;
friction = -1 * kineticFrictionCoefficient * LinearVelocity;
}
Force += new Vector2(friction.X * 200, 0);
// If the horizontal speed is very small, just set it to 0
if (Math.Abs(LinearVelocity.X) < 0.01)
{
LinearVelocity = new Vector2(0, LinearVelocity.Y);
}
}
// Create platforms & environment
private void CreateEnvironment(GraphicsDevice g)
{
#region Create Player & Target
// First objects to create are the player and the target
Player = new Character(true);
Player.Position = new Vector2(_nearEdge + 32, _bottomEdge - 128);
Player.IsPlayer = true;
RigidBody playerBody = Player.RigidBody;
playerBody.Position = Player.Position;
playerBody.Width = 32;
playerBody.Height = 32;
playerBody.CollidableObject = new BoxCollider();
Player.TexturePos = new Vector2(Player.Position.X - playerBody.Width / 2, Player.Position.Y - playerBody.Height / 2);
DynamicObjects.Add(Player);
AllPhysObjects.Add(Player);
Target = new PhysObject();
Target.Position = new Vector2(_farEdge / 2, _bottomEdge - 256);
Target.IsTarget = true;
Target.Elasticity = 1;
RigidBody targetBody = Target.RigidBody;
targetBody.Mass = 100.0f;
targetBody.Position = Target.Position;
targetBody.Width = 32;
targetBody.Height = 32;
targetBody.CollidableObject = new BoxCollider();
targetBody.CollidableObject.IsCircle = true;
targetBody.AffectedByPhysics = false;
targetBody.IgnoreGravity = true;
float targetYVelocity = ((float)World.RandomGen.Next(3, 7) / 10.0f);
if (World.RandomGen.Next(0, 1) == 0)
{
targetYVelocity *= -1;
}
float targetXVelocity = ((float)World.RandomGen.Next(3, 7) / 10.0f);
if (World.RandomGen.Next(0, 1) == 0)
{
targetXVelocity *= -1;
}
targetBody.LinearVelocity = new Vector2(targetXVelocity * _portalSpeed, targetYVelocity * _portalSpeed);
Target.TexturePos = new Vector2(targetBody.Position.X - targetBody.Width / 2, targetBody.Position.X - targetBody.Height / 2);
DynamicObjects.Add(Target);
AllPhysObjects.Add(Target);
#endregion
#region Edges
// EDGES - Create the far left walls
PhysObject block = new PhysObject();
block.Position = new Vector2(_nearEdge - 480, _bottomEdge / 2);
RigidBody body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = _farEdge / 2;
body.Height = _bottomEdge;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// EDGES - Create the far right wall
block = new PhysObject();
block.Position = new Vector2(_farEdge + 480, _bottomEdge / 2);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = _farEdge / 2;
body.Height = _bottomEdge;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// EDGES - Create the main floor
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2, _bottomEdge + 480);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 4096;
body.Height = 1024;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// EDGES - Create the roof
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2, _topEdge - 480);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 4096;
body.Height = 1024;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 0
// Platform
block = new PhysObject();
block.Position = new Vector2(_nearEdge + 320, _bottomEdge - 32);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 640;
body.Height = 64;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge - 320, _bottomEdge - 32);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 640;
body.Height = 64;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 1
// Platform
block = new PhysObject();
block.Position = new Vector2(_nearEdge + 256, _bottomEdge - 240);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Moving Platform
block = new MovingPlatform(new Vector2(_nearEdge + 256, _bottomEdge - 144),
new Vector2(_nearEdge + 192, _bottomEdge - 144),
new Vector2(_nearEdge + (_farEdge / 2) - 160, _bottomEdge - 144),
new Vector2(100, 0));
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Moving Platform
block = new MovingPlatform(new Vector2(_farEdge - 256, _bottomEdge - 144),
new Vector2((_farEdge / 2) + 160, _bottomEdge - 144),
new Vector2(_farEdge - 192, _bottomEdge - 144),
new Vector2(-100, 0));
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge - 256, _bottomEdge - 240);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 2
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 - 448, _bottomEdge - 400);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 128;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 + 448, _bottomEdge - 400);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 128;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 3
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2, _bottomEdge - 496);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 512;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
/*
* // Pendulum (spins, collisions partially broken though, uncomment if you want to see (spawns to the right of the player start))
* block = new Pendulum(new Vector2(_farEdge / 2, _bottomEdge - 496), new Vector2(0, 128));
* DynamicObjects.Add(block);
* AllPhysObjects.Add(block);
*/
#endregion
#region Platforms - Tier 4
// Platform
block = new PhysObject();
block.Position = new Vector2(_nearEdge + 256, _bottomEdge - 592);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 512;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge - 256, _bottomEdge - 592);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 512;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 5
// Platform
block = new PhysObject();
block.Position = new Vector2(_nearEdge + 128, _bottomEdge - 784);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 - 208, _bottomEdge - 784);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 352;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Thicker block
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 + 80, _bottomEdge - 704);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 96;
body.Height = 128;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Thicker block
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 - 80, _bottomEdge - 704);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 96;
body.Height = 128;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 + 208, _bottomEdge - 784);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 352;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge - 128, _bottomEdge - 784);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 6
// Platform
block = new PhysObject();
block.Position = new Vector2(_nearEdge + 432, _bottomEdge - 1008);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 288;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Thicker block
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 - 80, _bottomEdge - 1040);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 96;
body.Height = 160;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Thicker block
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 + 80, _bottomEdge - 1040);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 96;
body.Height = 160;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge - 432, _bottomEdge - 1008);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 288;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 7
// Platform
block = new PhysObject();
block.Position = new Vector2(_nearEdge + 560, _bottomEdge - 1072);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 32;
body.Height = 96;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge - 560, _bottomEdge - 1072);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 32;
body.Height = 96;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 8
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 - 256, _bottomEdge - 1136);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 448;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 + 256, _bottomEdge - 1136);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 448;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 9
// Platform
block = new PhysObject();
block.Position = new Vector2(_nearEdge + 128, _bottomEdge - 1424);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 - 288, _bottomEdge - 1424);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2 + 288, _bottomEdge - 1424);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge - 128, _bottomEdge - 1424);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 10
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2, _bottomEdge - 1680);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 640;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 11
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2, _bottomEdge - 1760);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 128;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 12
// Moving Platform
block = new MovingPlatform(new Vector2(_nearEdge + 256, _bottomEdge - 2000),
new Vector2(_nearEdge + 160, _bottomEdge - 2000),
new Vector2(_nearEdge + (_farEdge / 2) - 160, _bottomEdge - 2000),
new Vector2(100, 0));
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
// Moving Platform
block = new MovingPlatform(new Vector2(_farEdge - 256, _bottomEdge - 2000),
new Vector2((_farEdge / 2) + 160, _bottomEdge - 2000),
new Vector2(_farEdge - 160, _bottomEdge - 2000),
new Vector2(-100, 0));
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 256;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
#region Platforms - Tier 13
// Platform
block = new PhysObject();
block.Position = new Vector2(_farEdge / 2, _bottomEdge - 2288);
body = block.RigidBody;
body.Mass = _maximumMass;
body.IgnoreGravity = true;
body.IsDynamic = false;
body.Position = block.Position;
body.Width = 512;
body.Height = 32;
body.CollidableObject = new BoxCollider();
StaticObjects.Add(block);
AllPhysObjects.Add(block);
#endregion
}
public void Update(float dt, PhysicsManager physManager, PhysObject po)
{
// Apply friction if the body is not in the air
if (!po.IsInTheAir && AffectedByPhysics)
{
ApplyFriction(physManager, po);
}
Vector2 acceleration = Force * (1 / Mass);
if (IgnoreGravity || !AffectedByPhysics)
{
LinearVelocity += (acceleration * dt);
}
else
{
LinearVelocity += (physManager.Gravity + acceleration) * dt;
}
// If projectile, update it
if (po is Projectile)
{
Projectile projectile = (Projectile)po;
projectile.Update();
}
// If pendulum, update it
if (po is Pendulum)
{
Pendulum pendulum = (Pendulum)po;
pendulum.Update(physManager, dt);
}
// If moving platform, update it
if (po is MovingPlatform)
{
MovingPlatform movingPlatform = (MovingPlatform)po;
movingPlatform.Update();
}
// Update the time since last collision
// Don't care when moving platform or pendulum last collided
if (!(po is MovingPlatform) && !(po is Pendulum))
{
po.TimeSinceLastCollisionWithFloor++;
po.TimeSinceLastCollision++;
// Determine if the body is in the air or not
if (po.TimeSinceLastCollisionWithFloor < 50 && AffectedByPhysics)
{
po.IsInTheAir = false;
}
else
{
po.IsInTheAir = true;
}
}
// Ensure things aren't moving too fast
MaximumVelocityCheck(physManager, po);
if ((Math.Abs(LinearVelocity.X) > 0 || Math.Abs(LinearVelocity.Y) > 0) && AffectedByPhysics)
{
// If there's a body on top of the current rigid body
for (int i = 0; i < po.BodiesOnTop.Count; i++)
{
// Check if the body is still on top
if (po.BodiesOnTop[i].TimeSinceLastCollision < 50)
{
// If this is a moving platform, move the object on top with this body
if (po is MovingPlatform)
{
po.BodiesOnTop[i].RigidBody.Position += (LinearVelocity * dt);
// If there is a stack of bodies on top of the moving platform
for (int j = 0; j < po.BodiesOnTop[i].BodiesOnTop.Count; j++)
{
if (!po.BodiesOnTop.Contains(po.BodiesOnTop[i].BodiesOnTop[j]))
{
// Add each unique body to the list of bodies on the platform
po.BodiesOnTop.Add(po.BodiesOnTop[i].BodiesOnTop[j]);
}
}
}
}
else
{
po.BodiesOnTop.Remove(po.BodiesOnTop[i]);
}
}
}
// Reset the force
Force = new Vector2(0);
Position += (LinearVelocity * dt);
}
