physics.h File Reference

Jo Engine File Physics function prototypes. More...

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Data Structures
struct	jo_sidescroller_physics_params

Functions
static __jo_force_inline void	jo_physics_apply_friction (jo_sidescroller_physics_params *physics)
	Friction computation.
static __jo_force_inline void	jo_physics_jump (jo_sidescroller_physics_params *physics)
	Jump computation.
static __jo_force_inline void	jo_physics_apply_gravity (jo_sidescroller_physics_params *physics)
	Gravity computation.
static __jo_force_inline void	jo_physics_accelerate_right (jo_sidescroller_physics_params *physics)
	Acceleration computation when going to the right.
static __jo_force_inline void	jo_physics_accelerate_left (jo_sidescroller_physics_params *physics)
	Acceleration computation when going to the left.
static __jo_force_inline void	jo_physics_decelerate_left (jo_sidescroller_physics_params *physics)
	Deceleration computation when going to the right.
static __jo_force_inline void	jo_physics_decelerate_right (jo_sidescroller_physics_params *physics)
	Deceleration computation when going to the left.
static __jo_force_inline bool	jo_physics_is_standing (jo_sidescroller_physics_params *physics)
	Check if we doesn't move.
static __jo_force_inline bool	jo_physics_is_almost_standing (jo_sidescroller_physics_params *physics, float tolerance)
	Check if we almost doesn't move.
static __jo_force_inline bool	jo_physics_is_going_on_the_right (jo_sidescroller_physics_params *physics)
	Check if we going on the right.
static __jo_force_inline bool	jo_physics_is_going_on_the_left (jo_sidescroller_physics_params *physics)
	Check if we going on the left.
static __jo_force_inline bool	jo_physics_should_brake (jo_sidescroller_physics_params *physics)
	Check if we should brake depending on the direction.
static __jo_force_inline void	jo_physics_init_for_sonic (jo_sidescroller_physics_params *physics)
	Init physics engine for a Sonic like game.

Detailed Description

Jo Engine File Physics function prototypes.

Author

Johannes Fetz

Bug

No known bugs.

Warning

Under development

Todo

Fixed point math

Megaman, Contra Physics

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Data Structure Documentation

jo_sidescroller_physics_params

struct jo_sidescroller_physics_params

Data Fields
float	acceleration_strength
float	air_acceleration_strength
float	braking_animation_speed
float	deceleration_strength
float	friction
float	gravity
bool	is_in_air
float	jump_speed_y
float	max_speed
float	max_speed_y
float	speed
float	speed_y

Function Documentation

jo_physics_accelerate_left()

__jo_force_inline void jo_physics_accelerate_left ( jo_sidescroller_physics_params * physics )

static

Acceleration computation when going to the left.

Parameters

physics

Sidescroller physics properties

jo_physics_accelerate_right()

__jo_force_inline void jo_physics_accelerate_right ( jo_sidescroller_physics_params * physics )

static

Acceleration computation when going to the right.

Parameters

physics

Sidescroller physics properties

jo_physics_apply_friction()

__jo_force_inline void jo_physics_apply_friction ( jo_sidescroller_physics_params * physics )

static

Friction computation.

Parameters

physics

Sidescroller physics properties

jo_physics_apply_gravity()

__jo_force_inline void jo_physics_apply_gravity ( jo_sidescroller_physics_params * physics )

static

Gravity computation.

Parameters

physics

Sidescroller physics properties

jo_physics_decelerate_left()

__jo_force_inline void jo_physics_decelerate_left ( jo_sidescroller_physics_params * physics )

static

Deceleration computation when going to the right.

Parameters

physics

Sidescroller physics properties

jo_physics_decelerate_right()

__jo_force_inline void jo_physics_decelerate_right ( jo_sidescroller_physics_params * physics )

static

Deceleration computation when going to the left.

Parameters

physics

Sidescroller physics properties

jo_physics_init_for_sonic()

__jo_force_inline void jo_physics_init_for_sonic ( jo_sidescroller_physics_params * physics )

static

Init physics engine for a Sonic like game.

Parameters

physics

Sidescroller physics properties

jo_physics_is_almost_standing()

__jo_force_inline bool jo_physics_is_almost_standing ( jo_sidescroller_physics_params * physics, float tolerance )

static

Check if we almost doesn't move.

Parameters

physics	Sidescroller physics properties
tolerance	Tolerance

Returns

true if we almost doesn't move otherwise false

jo_physics_is_going_on_the_left()

__jo_force_inline bool jo_physics_is_going_on_the_left ( jo_sidescroller_physics_params * physics )

static

Check if we going on the left.

Parameters

physics

Sidescroller physics properties

Returns

true if we going on the left otherwise false

jo_physics_is_going_on_the_right()

__jo_force_inline bool jo_physics_is_going_on_the_right ( jo_sidescroller_physics_params * physics )

static

Check if we going on the right.

Parameters

physics

Sidescroller physics properties

Returns

true if we going on the right otherwise false

jo_physics_is_standing()

__jo_force_inline bool jo_physics_is_standing ( jo_sidescroller_physics_params * physics )

static

Check if we doesn't move.

Parameters

physics

Sidescroller physics properties

Returns

true if we doesn't move otherwise false

jo_physics_jump()

__jo_force_inline void jo_physics_jump ( jo_sidescroller_physics_params * physics )

static

Jump computation.

Parameters

physics

Sidescroller physics properties

jo_physics_should_brake()

__jo_force_inline bool jo_physics_should_brake ( jo_sidescroller_physics_params * physics )

static

Check if we should brake depending on the direction.

Parameters

physics

Sidescroller physics properties

Returns

true if we should brake depending on the direction otherwise false