physics

package

v1.0.2 Latest Latest Go to latest Published: Jun 10, 2025 License: GPL-3.0 Imports: 2 Imported by: 0

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Repository

github.com/InsideGallery/game-core

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Documentation ¶

Index ¶

Variables
type Composite
- func NewComposite() *Composite
type Constraint
- func NewConstraint(p1, p2 *Particle, springConstant, distanceConstraint float64) *Constraint
- func (c *Constraint) Relax()
type Material
- func NewMaterial(mass float64) Material
type Particle
- func NewParticle(position shapes.Point, material Material) *Particle
type World
- func NewWorld(border shapes.Border, gravity shapes.Point, step float64) *World
- func (w *World) AddComposites(c ...*Composite)
- func (w *World) Simulate(steps, dimensions int)

Constants ¶

This section is empty.

Variables ¶

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var (
	ErrNotFoundAttachedParticle = errors.New("not found attache particle")
)

All kind of errors

Functions ¶

This section is empty.

Types ¶

type Composite ¶

type Composite struct {
	Particles   []*Particle
	Constraints []*Constraint
}

Composite describe complex object with multiple particles and constraints

func NewComposite ¶

func NewComposite() *Composite

NewComposite create new composite

func (*Composite) AddConstraints ¶

func (c *Composite) AddConstraints(i1, i2 int, springConstant float64) error

AddConstraints create constraint between two particles

func (*Composite) AddParticle ¶

func (c *Composite) AddParticle(p *Particle)

AddParticle add particle

func (*Composite) GetParticle ¶

func (c *Composite) GetParticle(i int) (*Particle, error)

GetParticle get particle by index

func (*Composite) SetMaterial ¶

func (c *Composite) SetMaterial(material Material)

SetMaterial set material to all particles

type Constraint ¶

type Constraint struct {
	Particle1 *Particle
	Particle2 *Particle
	Target    float64
	Stiff     float64
	Damp      float64
}

Constraint describe relation between two particles

func NewConstraint ¶

func NewConstraint(p1, p2 *Particle, springConstant, distanceConstraint float64) *Constraint

NewConstraint return new constraint

func (*Constraint) Relax ¶

func (c *Constraint) Relax()

Relax add relax forces

type Material ¶

type Material struct {
	Mass float64
}

Material describe material

func NewMaterial ¶

func NewMaterial(mass float64) Material

NewMaterial return new material

type Particle ¶

type Particle struct {
	Material Material

	Position     shapes.Point
	Previous     shapes.Point
	Velocity     shapes.Point
	Acceleration shapes.Point
}

Particle describe particle

func NewParticle ¶

func NewParticle(position shapes.Point, material Material) *Particle

NewParticle create new particle

func (*Particle) Accelerate ¶

func (p *Particle) Accelerate(rate shapes.Point)

Accelerate apply acceleration

func (*Particle) ApplyForce ¶

func (p *Particle) ApplyForce(force shapes.Point)

ApplyForce apply force

func (*Particle) ApplyImpulse ¶

func (p *Particle) ApplyImpulse(impulse shapes.Point)

ApplyImpulse immediately change position

func (*Particle) ResetForces ¶

func (p *Particle) ResetForces()

ResetForces reset acceleration

func (*Particle) Restrain ¶

func (p *Particle) Restrain(border shapes.Border, dimensions int)

Restrain return particle into border on collision

func (*Particle) SetMaterial ¶

func (p *Particle) SetMaterial(material Material)

SetMaterial set material

func (*Particle) Simulate ¶

func (p *Particle) Simulate(worldDelta float64)

Simulate simulate world

type World ¶

type World struct {
	shapes.Border
	Gravity    shapes.Point
	Composites []*Composite
	Step       float64
	Delta      float64 // Delta time (1.0 / time Step)
}

World describe particle world

func NewWorld ¶

func NewWorld(border shapes.Border, gravity shapes.Point, step float64) *World

NewWorld return new world with gravity

func (*World) AddComposites ¶

func (w *World) AddComposites(c ...*Composite)

AddComposites add composite

func (*World) Simulate ¶

func (w *World) Simulate(steps, dimensions int)

Simulate simulate physics

Source Files ¶

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