private void updateParticle2(float step_time, Particle p, cWorld world)
{
p.Vel.Y += (Constants.GRAVITY * 40.0f * (step_time * step_time));
// p.Vel.X *= p.SlowDown;
// p.Vel.Y *= p.SlowDown;
AppMath.Vec2Truncate(ref p.Vel, p.MaxSpeed);
//world.collideParticleSAT(p, step_time, false);
//p.Heading = cAppMath.Vec2NormalizeReturn(p.Vel);
p.LastPos = p.Pos;
p.Pos.X += p.Vel.X * step_time;
p.Pos.Y += p.Vel.Y * step_time;
if (!AppMath.Vec2IsZero(p.Vel))
{
p.Heading = AppMath.Vec2NormalizeReturn(p.Vel);
p.Rotation = (float)AppMath.GetAngleOfVector(p.Heading);
}
world.collideParticleRayTrace(p, step_time);
p.Opacity -= p.Fade * step_time;
}
public override void Update(float step_time)
{
cWorld world = particleManager.Scene.World;
for (int i = 0; i < pool.CountActive; ++i)
{
Particle p = pool.get(i);
if (!p.Intersects)
{
/*
* p.Dims.Y += p.ScaleSpeed * step_time; //+=
* p.Dims.y += p.ScaleSpeed * step_time; //+=
*/
AppMath.Vec2Truncate(ref p.Vel, p.MaxSpeed * 1.5f);
p.Vel.Y += (Constants.GRAVITY * 40.0f * (step_time * step_time));
p.Vel.X *= p.SlowDown;
p.Vel.Y *= p.SlowDown;
//p.Heading = cAppMath.Vec2NormalizeReturn(p.Vel);
p.LastPos = p.Pos;
p.Pos.X += p.Vel.X * step_time;
p.Pos.Y += p.Vel.Y * step_time;
if (!AppMath.Vec2IsZero(p.Vel))
{
p.Heading = AppMath.Vec2NormalizeReturn(p.Vel);
p.Rotation = (float)AppMath.GetAngleOfVector(p.Heading);
}
world.collideParticleRayTrace(p, step_time);
}
p.Opacity -= p.Fade * step_time;
if (p.Opacity <= 0.0f)
{
p.Opacity = 0.0f;
pool.deactivate(i);
}
p.Color.A = (byte)p.Opacity;
}
}
public void Update(float step_time)
{
force.Y = (startPosition.Y - position.Y) * SPEED;
//cAppMath.Vec2Truncate(ref force, MAX_FORCE);
acceleration.Y = force.Y * step_time;
velocity.Y += acceleration.Y * step_time;
AppMath.Vec2Truncate(ref velocity, MAX_VELOCITY);
lastPosition = position;
position.Y += velocity.Y * step_time; // * factor;
force.Y = 0.0f;
}
/// <summary>
/// Main update protocol.
/// </summary>
/// <param name="step_time"></param>
/// <param name="p"></param>
/// <param name="world"></param>
private void updateParticle1(float step_time, Particle p, cWorld world)
{
// Particle's update code comes here.
p.Dims.X += p.ScaleSpeed * step_time; //+=
p.Dims.Y += p.ScaleSpeed * step_time; //+=
if (AppMath.Vec2Length(p.Dims) < 0.5f)
{
p.Dims.X = 0.0f;
p.Dims.Y = 0.0f;
}
p.Vel.Y += (Constants.GRAVITY * 40.0f * (step_time * step_time));
p.Vel.X *= p.SlowDown;
p.Vel.Y *= p.SlowDown;
AppMath.Vec2Truncate(ref p.Vel, p.MaxSpeed * 1.5f);
// world.collideParticleSAT(p, step_time, false);
//p.Heading = cAppMath.Vec2NormalizeReturn(p.Vel);
p.LastPos = p.Pos;
p.Pos.X += p.Vel.X * step_time;
p.Pos.Y += p.Vel.Y * step_time;
if (!AppMath.Vec2IsZero(p.Vel))
{
p.Heading = AppMath.Vec2NormalizeReturn(p.Vel);
p.Rotation = (float)AppMath.GetAngleOfVector(p.Heading);
}
world.collideParticleRayTrace(p, step_time);
p.Opacity -= p.Fade * step_time;
}
public override void Update(float step_time)
{
this.renderer.Update(step_time);
cPlayer player = Scene.Player;
if (this.pulling)
{
Vector2f predicted = AppMath.Vec2NormalizeReturn((player.Bounds.center + (player.Velocity * step_time)) - this.Bounds.center);
// pull pickup
//Vector2f toPlayer = cAppMath.Vec2NormalizeReturn(player.Bounds.center - this.Bounds.center);
// G * ((m1*m2) / (d*d))
float f = PULL_FORCE * 150f; // * (100000.0f / ( d*d) );
this.AddForce(predicted * f);
}
/*
* else
* {
* this.pulling = false;
* }
*/
// applying some gravity
force.Y += (false == pulling) ? (Constants.GRAVITY * 40.0f * step_time) : 0.0f;
velocity.X += force.X * step_time;
velocity.Y += force.Y * step_time;
//velocity.X = Math.Abs(velocity.X) < 0.05f ? 0.0f : velocity.X;
//velocity.Y = Math.Abs(velocity.Y) < 0.05f ? 0.0f : velocity.Y;
double len = AppMath.Vec2Length(velocity);
if (len < 0.1)
{
velocity = new Vector2f(0.0f, 0.0f);
}
AppMath.Vec2Truncate(ref velocity, MaxSpeed);
// get more precise result calling it here (because of the updated velocity)
// instead of calling at the beginning of this update method
checkCollisionWithWorld(step_time);
lastPosition = position;
position.X += velocity.X * step_time;
position.Y += velocity.Y * step_time;
Bounds.SetPosByCenter(position);
this.hitCollisionRect = Bounds;
if (!AppMath.Vec2IsZero(velocity))
{
heading = AppMath.Vec2NormalizeReturn(velocity);
orientation = AppMath.GetAngleOfVector(heading);
}
force = new Vector2f(0.0f, 0.0f);
}
public override void Update(float step_time)
{
cWorld world = particleManager.Scene.World;
/*
* if(emiting && this.emitTimer.isReady())
* {
* // initParticle();
* remaining -= 1;
* emiting = remaining > 0;
* }
*/
for (int i = 0; i < pool.CountActive; ++i)
{
Particle p = pool.get(i);
// p.Vel.Y += (Constants.GRAVITY*30 * (step_time * step_time));
p.Vel.X *= p.SlowDown;
p.Vel.Y *= p.SlowDown;
AppMath.Vec2Truncate(ref p.Vel, p.MaxSpeed);
//world.collideParticleSAT(p, step_time);
//p.Heading = cAppMath.Vec2NormalizeReturn(p.Vel);
Vector2u uSize = this.renderStates.Texture.Size;
p.Scale -= p.ScaleSpeed * step_time;
p.Dims = new Vector2f(uSize.X * p.Scale, uSize.Y * p.Scale);
p.LastPos = p.Pos;
p.Pos.X += p.Vel.X * step_time;
p.Pos.Y += p.Vel.Y * step_time;
if (!AppMath.Vec2IsZero(p.Vel))
{
p.Heading = AppMath.Vec2NormalizeReturn(p.Vel);
// p.Rotation = (float)cAppMath.GetAngleOfVector(p.Heading);
}
world.collideParticleRayTrace(p, step_time, true, false);
p.Opacity -= p.Fade * step_time;
if (p.Opacity <= 0.0f || p.Scale <= 0.0f)
{
p.Opacity = 0.0f;
p.Scale = 0.0f;
p.Life -= 1.0f;
if (p.Life <= 0.0f)
{
pool.deactivate(i);
}
else
{
this.reinit(p);
}
}
p.Color.A = (byte)p.Opacity;
}
}
