source: abuse/trunk/src/sdlport/mouse.cpp @ 534 Tweet

/*
 *  Abuse - dark 2D side-scrolling platform game
 *  Copyright (c) 2001 Anthony Kruize <trandor@labyrinth.net.au>
 *  Copyright (c) 2005-2011 Sam Hocevar <sam@hocevar.net>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software Foundation,
 *  Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 */

#include "config.h"

#include <SDL.h>

#include "common.h"

#include "video.h"
#include "sprite.h"
#include "image.h"
#include "filter.h"
#include "mouse.h"

unsigned char def_mouse[]=
{
    0,2,0,0,0,0,0,0,
    2,1,2,0,0,0,0,0,
    2,1,1,2,0,0,0,0,
    2,1,1,1,2,0,0,0,
    2,1,1,1,1,2,0,0,
    2,1,1,1,1,1,2,0,
    0,2,1,1,2,2,0,0,
    0,0,2,1,1,2,0,0,
    0,0,2,1,1,2,0,0,
    0,0,0,2,2,0,0,0
};

//
// Constructor
//
JCMouse::JCMouse( image *Screen, palette *pal )
{
    image *im;
    int br, dr;
    filter f;
    but = 0;
    cx = cy = 0;
    here = 1;
    sp = NULL;

    screen = Screen;
    br = pal->brightest( 1 );
    dr = pal->darkest( 1 );
    f.set( 1, br );
    f.set( 2, dr );
    im = new image(vec2i(8, 10), def_mouse);
    f.apply( im );
    sp = new sprite(Screen, im, 100, 100);
    mx = Screen->Size().x / 2;
    my = Screen->Size().y / 2;
}

//
// Destructor
//
JCMouse::~JCMouse()
{
    if( sp )
    {
        delete sp->visual;
        delete sp;
    }
}

//
// set_shape()
// Set the shape of the mouse cursor
//
void JCMouse::set_shape( image *im, int centerx, int centery )
{
    sp->change_visual( im, 1 );
    cx = -centerx;
    cy = -centery;
}

//
// set_position()
// Set the position of the mouse cursor
//
void JCMouse::set_position( int new_mx, int new_my )
{
    // Make sure the values we are given are sensible.
    if( new_mx > screen->Size().x - 1 )
    {
        new_mx = screen->Size().x - 1;
    }
    if( new_my > screen->Size().y - 1 )
    {
        new_my = screen->Size().y - 1;
    }

    // Set the new position
    mx = new_mx;
    my = new_my;
    SDL_WarpMouse( new_mx, new_my );
}

//
// update()
// Update the mouses position and buttons states
//
void JCMouse::update( int newx, int newy, int new_but )
{
    if( newx < 0 )
    {
        Uint8 mask;

        lx = mx;
        ly = my;
        lbut = but;
        mask = SDL_GetMouseState( &mx, &my );
        but = ( ( mask & SDL_BUTTON(1) ) != 0 ) |
              ( ( mask & SDL_BUTTON(2) ) != 0 ) << 2 |
              ( ( mask & SDL_BUTTON(3) ) != 0 ) << 1;
    }
    else
    {
        mx = newx;
        my = newy;
        but = new_but;
    }
}