Physics

Simple 2D physics simulation module. More...

Classes
struct	FsBody
	Physics body. More...
struct	FsSpace
	Physics simulation space. More...

Enumerations
enum	FsBodyType { FS_BODY_QUAD , FS_BODY_CIRCLE }
	Physics body types. More...

Functions
FsSpace	fsSpaceCreate (FsVec2 gravity, FsVec2 damping)
	Creates a physics simulation space.
void	fsSpaceAddBody (FsSpace *space, FsBody *body)
	Adds a body to a physics space.
void	fsSpaceStep (FsSpace *space, float stepTime)
	Advances the physics simulation.
bool	fsIsQuadColiding (FsBody quad1, FsBody quad2)
	Checks collision between two quad bodies.

Detailed Description

Simple 2D physics simulation module.

Enumeration Type Documentation

FsBodyType

enum FsBodyType

Physics body types.

Defines the shape and behavior of a physics body.

Enumerator
FS_BODY_QUAD	Circle Body
FS_BODY_CIRCLE	Axis-aligned rectangle body

Function Documentation

fsIsQuadColiding()

bool fsIsQuadColiding	(	FsBody	quad1,
		FsBody	quad2 )

Checks collision between two quad bodies.

Performs an axis-aligned bounding box (AABB) collision test. Only bodies of type FS_BODY_QUAD are supported.

Parameters

quad1	First body.
quad2	Second body.

Returns

true if the bodies are colliding, false otherwise.

fsSpaceAddBody()

void fsSpaceAddBody	(	FsSpace *	space,
		FsBody *	body )

Adds a body to a physics space.

Inserts a body so it will be updated during simulation. If the body limit is exceeded, the body is not added.

Parameters

space	Pointer to the physics space.
body	Pointer to the body to add.

Note

The space does not manage the lifetime of the body.

fsSpaceCreate()

FsSpace fsSpaceCreate	(	FsVec2	gravity,
		FsVec2	damping )

Creates a physics simulation space.

Initializes a physics space with gravity and damping parameters. The space starts empty, with no bodies attached.

Parameters

gravity	Gravity applied to all bodies.
damping	Velocity damping applied every simulation step.

Returns

Initialized physics space.

fsSpaceStep()

void fsSpaceStep	(	FsSpace *	space,
		float	stepTime )

Advances the physics simulation.

Steps the physics simulation forward using a fixed timestep. Gravity, damping and velocity integration are applied.

Parameters

space	Pointer to the physics space.
stepTime	Simulation frequency (e.g. 60.0f for 60 Hz).

Note

Uses fsTimeGetDelta() internally.