source: orxonox.OLD/orxonox/trunk/src/command_node.cc @ 2617

/* 
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   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, or (at your option)
   any later version.

   ### File Specific:
   main-programmer: Christian Meyer
   co-programmer: ...
*/


#include "command_node.h"
#include "keynames.h"
#include "ini_parser.h"
#include "world_entity.h"

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

using namespace std;

/**
        \brief constructs a CommandNode to handle remote input
        \param ID: unique denumerator to identify the node in the network
*/
CommandNode::CommandNode (int ID)
{
        bound = new List<WorldEntity>();
        aliases = NULL;
        netID = ID;
        bLocalInput = false;
}

/**
        \brief constructs a CommandNode to handle local input
        \param filename: The path and name of the file to load the key bindings from
*/
CommandNode::CommandNode (char* filename = DEFAULT_KEYBIND_FILE)
{
        aliases = NULL;
        bLocalInput = true;
        netID = 0;
        bound = new List<WorldEntity>();
        load_bindings (filename);
}

/**
        \brief removes the CommandNode from memory
*/
CommandNode::~CommandNode ()
{
        if( aliases != NULL) free (aliases);
        if( bound != NULL) delete bound;
}

/**
        \brief loads new key bindings from a file
        \param filename: The path and name of the file to load the bindings from
*/
void CommandNode::load_bindings (char* filename)
{
        FILE* stream;
        
        printf("Loading key bindings from %s\n", filename);
        
        if( filename == NULL) filename = DEFAULT_KEYBIND_FILE;
        
                // remove old bindings if present
        if( aliases != NULL)
        {
                free (aliases);
                aliases = NULL;
        }
                        
                // create parser
        IniParser parser (filename);
        if( parser.get_section ("Bindings") == -1)
        {
                printf("Could not find key bindings in %s\n", filename);
                return;
        }
                        // allocate empty lookup table
        aliases = (KeyBindings*) calloc (1, sizeof (KeyBindings));
        
        char namebuf[256];
        char valuebuf[256];
        memset (namebuf, 0, 256);
        memset (valuebuf, 0, 256);
        int* index;

        while( parser.next_var (namebuf, valuebuf) != -1)
        {
                index = name_to_index (namebuf);
                switch( index[0])
                {
                        case 0:
                                printf("Key binding %d(%s) set to %s\n", index[1], SDLK_to_keyname( index[1]), valuebuf);
                                strcpy (aliases->keys[index[1]], valuebuf);
                                break;
                        case 1:
                                printf("Button binding %d(%s) set to %s\n", index[1], SDLB_to_buttonname( index[1]), valuebuf);
                                strcpy (aliases->buttons[index[1]], valuebuf);
                                break;
                        default:
                                break;
                }
                memset (namebuf, 0, 256);
                memset (valuebuf, 0, 256);
        }
}

/**
        \brief binds a WorldEntity to the CommandNode
        \param entity: Pointer to the entity to bind
*/
void CommandNode::bind (WorldEntity* entity)
{
        bound->add (entity, LIST_ADD_NEXT, true);
}

/**
        \brief removes an entity from the list of the CommandNode
        \param entity: Pointer to the entity to relese
*/
void CommandNode::unbind (WorldEntity* entity)
{
        bound->remove (entity, LIST_FIND_FW);
}

int* CommandNode::name_to_index (char* name)
{
        coord[0] = -1;
        coord[1] = -1;
        int c;
        if( (c = keyname_to_SDLK (name)) != -1)
        {
                coord[1] = c;
                coord[0] = 0;
        }
        if( (c = buttonname_to_SDLB (name)) != -1)
        {
                coord[1] = c;
                coord[0] = 1;
        }
        return coord;
}

/**
        \brief tells the CommandNode to run through all pending events and relay them accordingly
*/
void CommandNode::process ()
{
        if( bLocalInput) process_local ();
        else process_network ();
}

void CommandNode::process_local ()
{
        SDL_Event event;
        Command cmd;
        
        while( SDL_PollEvent (&event))
        {
                memset (cmd.cmd, 0, CMD_LENGHT); 
                switch( event.type)
                {
                        case SDL_KEYDOWN:
                                strcpy (cmd.cmd, aliases->keys[event.key.keysym.sym]);
                                cmd.bUp = false;
                                if( strlen (cmd.cmd) > 0) relay (&cmd);
                                break;
                        case SDL_KEYUP:
                                strcpy( cmd.cmd, aliases->keys[event.key.keysym.sym]);
                                cmd.bUp = true;
                                if( strlen (cmd.cmd) > 0) relay (&cmd);
                                break;
                        case SDL_MOUSEMOTION:
                                strcpy( cmd.cmd, "cursor");
                                cmd.x = event.motion.x;
                                cmd.y = event.motion.y;
                                cmd.xrel = event.motion.xrel;
                                cmd.yrel = event.motion.yrel;
                                break;
                        case SDL_MOUSEBUTTONUP:
                                strcpy( cmd.cmd, aliases->buttons[event.button.button]);
                                cmd.bUp = true;
                                if( strlen (cmd.cmd) > 0) relay (&cmd);
                                break;
                        case SDL_MOUSEBUTTONDOWN:
                                strcpy( cmd.cmd, aliases->buttons[event.button.button]);
                                cmd.bUp = false;
                                if( strlen (cmd.cmd) > 0) relay (&cmd);
                                break;
                        case SDL_JOYAXISMOTION:
                        case SDL_JOYBALLMOTION:
                        case SDL_JOYHATMOTION:
                        case SDL_JOYBUTTONDOWN:
                        case SDL_JOYBUTTONUP:
                                break;
                        default:
                                Orxonox *orx = Orxonox::getInstance();
                                orx->event_handler (&event);
                                break;
                }
        }
}

void CommandNode::process_network ()
{

}

void CommandNode::relay (Command* cmd)
{
printf("CommandNode|relay()\n");
        List<WorldEntity>* plist = bound;
        
        Orxonox *orx = Orxonox::getInstance();
        if( orx->system_command (cmd)) return;
                
        if( bLocalInput) send_over_network (cmd);
        
        while( (plist = plist->get_next()) != NULL)
        {
                plist->get_object()->command (cmd);
        }
}

/**
        \brief sets the network identifier of the CommandNode
        \param ID: the new ID to use
*/
void CommandNode::set_netID (int ID)
{
        netID = ID;
}

void CommandNode::send_over_network (Command* cmd)
{
}