debian man page for sdlx::controller::interface

Query: sdlx::controller::interface

OS: debian

Section: 3pm

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

pods::SDLx::Controller::Interface(3pm)			User Contributed Perl Documentation		    pods::SDLx::Controller::Interface(3pm)

NAME
SDLx::Controller::Interface - Interface Physics and Rendering with the Controller with callbacks
CATEGORY
Extension, Controller
SYNOPSIS
use SDL; use SDLx::App; use SDLx::Controller::Interface; #SDLx::App is a controller my $app = SDLx::App->new(width => 200, height => 200 ); my $ball = SDLx::Controller::Interface->new( x=> 10, y => 50, v_x => 10, v_y=> 20 ); #Set the initial state of the ball's physics, this is optional $ball->set_acceleration( sub { my ($time, $current_state) = @_; return( 0, -10, 0 ); # Return accelerations (x,y,rotation) } ); my $ball_render = sub { my $state = shift; $app->draw_rect( undef, 0 ); $app->draw_rect( [$state->x, $state->y, 10,10], [255,0,0,255] ); $app->update(); }; $ball->attach( $app, $ball_render, @params ); $app->run(); $ball->detach(); #can be called at anytime (for example when ball 'dies')
DESCRIPTION
METHODS
set_acceleration Allows you to set the acceleration callback for defining the interface's behaviour in terms of x,y and rotation. $interface->set_acceleration ( sub { my ($time, $current_state) = @_; return ( $accel_x, $accel_y, $torque ); } ); These accelerations are arbitrary and can be set to any frame of reference. Your render callback will handle how to interpret it. The callback will receive the time and the current state as a "SDLx::Controller::State" element. attach Attaches the interface to a controller with a render callback $interface->attach( $controller, $render, @params ); Where $render is a callback that receives the interpolated "SDLx::Controller::State". my $render = sub { my ($state, @params) = @_; # draw the current $state. }; The @params are any extra parameters you would like to pass to the $render callback. current my $current_state = $interface->current(); Returns the current state of the interface as a "SDLx::Controller::State". previous my $previous_state = $interface->previous(); Returns the previous state of the interface as a "SDLx::Controller::State". detach $interface->detach(); If $interface has been "attach()"'ed to any controller it will be detached now.
OTHER METHODS
Don't use these unless you really really want to. acceleration Call the acceleration callback once. interpolate Interpolate the current state evaluate Evaluate the new current and previous state. update Update the states by integrating with time.
AUTHORS
See "AUTHORS" in SDL. perl v5.14.2 2012-05-28 pods::SDLx::Controller::Interface(3pm)
Related Man Pages
sdlx::sprite::animated(3pm) - debian
sdl::cookbook::opengl(3pm) - debian
sdlx::layermanager(3pm) - debian
sdlx::sound(3pm) - debian
sdlx::sprite(3pm) - debian
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