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trader/src/move.c

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/************************************************************************
* *
* Star Traders: A Game of Interstellar Trading *
* Copyright (C) 1990-2011, John Zaitseff *
* *
************************************************************************/
/*
Author: John Zaitseff <J.Zaitseff@zap.org.au>
$Id$
This file, move.c, contains the implementation of functions that make
and process a game move in Star Traders.
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 3 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, see http://www.gnu.org/licenses/.
*/
#include "trader.h"
/************************************************************************
* Module-specific macros *
************************************************************************/
// Calculate positions near (x,y), taking the edge of the galaxy into account
#define GALAXY_MAP_LEFT(x, y) (((x) <= 0) ? MAP_EMPTY : galaxy_map[(x) - 1][(y)])
#define GALAXY_MAP_RIGHT(x, y) (((x) >= MAX_X) ? MAP_EMPTY : galaxy_map[(x) + 1][(y)])
#define GALAXY_MAP_UP(x, y) (((y) <= 0) ? MAP_EMPTY : galaxy_map[(x)][(y) - 1])
#define GALAXY_MAP_DOWN(x, y) (((y) >= MAX_Y) ? MAP_EMPTY : galaxy_map[(x)][(y) + 1])
#define assign_vals(x, y, left, right, up, down) \
do { \
(left) = GALAXY_MAP_LEFT((x), (y)); \
(right) = GALAXY_MAP_RIGHT((x), (y)); \
(up) = GALAXY_MAP_UP((x), (y)); \
(down) = GALAXY_MAP_DOWN((x), (y)); \
} while (0)
/************************************************************************
* Module-specific function prototypes *
************************************************************************/
/*
Function: bankrupt_player - Make the current player bankrupt
Parameters: forced - True if bankruptcy is forced by Bank
Returns: (nothing)
This function makes the current player bankrupt, whether by their own
choice or as a result of action by the Interstellar Trading Bank. All
shares are returned to the appropriate companies, any debt is cancelled
and any cash is confiscated. On exit, quit_selected is true if all
players are bankrupt.
*/
static void bankrupt_player (bool forced);
/*
Function: try_start_new_company - See if a new company can be started
Parameters: x, y - Coordinates of position on map
Returns: (nothing)
This function attempts to establish a new company if the position (x,y)
is in a suitable location and if no more than MAX_COMPANIES are already
present.
*/
static void try_start_new_company (int x, int y);
/*
Function: merge_companies - Merge two companies together
Parameters: a, b - Companies to merge
Returns: (nothing)
This function merges two companies on the galaxy map; the one with the
highest value takes over. The parameters a and b are actual values
from the galaxy map.
*/
static void merge_companies (map_val_t a, map_val_t b);
/*
Function: include_outpost - Include any outposts into the company
Parameters: num - Company on which to operate
x, y - Coordinates of position on map
Returns: (nothing)
This function includes the outpost at (x,y) into company num,
increasing the share price by calling inc_share_price(). It also
checks surrounding locations for further outposts to include.
*/
static void include_outpost (int num, int x, int y);
/*
Function: inc_share_price - Increase the share price of a company
Parameters: num - Company on which to operate
inc - Base increment for the share price
Returns: (nothing)
This function increments the share price, maximum stock available and
the share return of company num, using inc as the basis for doing so.
*/
static void inc_share_price (int num, double inc);
/*
Function: adjust_values - Adjust various company-related values
Parameters: (none)
Returns: (nothing)
This function adjusts the cost of shares for companies on the galaxy
map, their return, the Bank interest rate, etc.
*/
static void adjust_values (void);
/*
Function: cmp_game_move - Compare two game_move[] elements for sorting
Parameters: a, b - Elements to compare
Returns: int - Comparison of a and b
This internal function compares two game_move[] elements (of type
move_rec_t) and returns -1 if a < b, 0 if a == b and 1 if a > b. It is
used for sorting game moves into ascending order.
*/
static int cmp_game_move (const void *a, const void *b);
/************************************************************************
* Game move function definitions *
************************************************************************/
// These functions are documented in the file "move.h"
/***********************************************************************/
// select_moves: Select NUMBER_MOVES random moves
void select_moves (void)
{
int count;
int x, y, i, j;
int tx, ty;
bool unique;
// How many empty spaces are there in the galaxy map?
count = 0;
for (x = 0; x < MAX_X; x++) {
for (y = 0; y < MAX_Y; y++) {
if (galaxy_map[x][y] == MAP_EMPTY) {
count++;
}
}
}
if (count < NUMBER_MOVES) {
quit_selected = true;
return;
}
// Generate unique random moves
for (i = 0; i < NUMBER_MOVES; i++) {
do {
do {
tx = randi(MAX_X);
ty = randi(MAX_Y);
} while (galaxy_map[tx][ty] != MAP_EMPTY);
unique = true;
for (j = i - 1; j >= 0; j--) {
if (tx == game_move[j].x && ty == game_move[j].y) {
unique = false;
break;
}
}
} while (! unique);
game_move[i].x = tx;
game_move[i].y = ty;
}
// Sort moves from left to right
qsort(game_move, NUMBER_MOVES, sizeof(move_rec_t), cmp_game_move);
quit_selected = false;
}
/***********************************************************************/
// get_move: Wait for the player to enter their move
selection_t get_move (void)
{
int i, x, y;
selection_t selection = SEL_NONE;
if (quit_selected || abort_game) {
return SEL_QUIT;
}
// Display map without closing window
show_map(false);
// Display current move choices on the galaxy map
for (i = 0; i < NUMBER_MOVES; i++) {
mvwaddch(curwin, game_move[i].y + 3, game_move[i].x * 2 + 2,
MOVE_TO_KEY(i) | attr_map_choice);
}
wrefresh(curwin);
// Show menu of choices for the player
newtxwin(5, WIN_COLS, 19, WCENTER, false, 0);
while (selection == SEL_NONE) {
wbkgd(curwin, attr_normal_window);
werase(curwin);
box(curwin, 0, 0);
wmove(curwin, 2, 2);
attrpr(curwin, attr_keycode, "<1>");
waddstr(curwin, " Display stock portfolio");
wmove(curwin, 3, 2);
attrpr(curwin, attr_keycode, "<2>");
waddstr(curwin, " Declare bankruptcy");
wmove(curwin, 2, 42);
attrpr(curwin, attr_keycode, "<3>");
waddstr(curwin, " Save and end the game");
wmove(curwin, 3, 42);
attrpr(curwin, attr_keycode, "<CTRL><C>");
waddstr(curwin, " Quit the game");
mvwaddstr(curwin, 1, 9, "Select move ");
waddstr(curwin, "[");
attrpr(curwin, attr_choice, "%c", MOVE_TO_KEY(0));
waddstr(curwin, "-");
attrpr(curwin, attr_choice, "%c", MOVE_TO_KEY(NUMBER_MOVES - 1));
waddstr(curwin, "/");
attrpr(curwin, attr_keycode, "1");
waddstr(curwin, "-");
attrpr(curwin, attr_keycode, "3");
waddstr(curwin, "/");
attrpr(curwin, attr_keycode, "<CTRL><C>");
waddstr(curwin, "]: ");
curs_set(CURS_ON);
wrefresh(curwin);
// Get the actual selection made by the player
while (selection == SEL_NONE) {
int key = tolower(gettxchar(curwin));
if (IS_MOVE_KEY(key)) {
selection = KEY_TO_MOVE(key);
curs_set(CURS_OFF);
waddstr(curwin, "Move ");
attrpr(curwin, attr_choice, "%c", key);
} else {
switch (key) {
case '1':
curs_set(CURS_OFF);
show_status(current_player);
curs_set(CURS_ON);
break;
case '2':
selection = SEL_BANKRUPT;
curs_set(CURS_OFF);
wattron(curwin, A_BOLD);
waddstr(curwin, "<2>");
wattroff(curwin, A_BOLD);
waddstr(curwin, " (Declare bankruptcy)");
break;
case '3':
selection = SEL_SAVE;
curs_set(CURS_OFF);
wattron(curwin, A_BOLD);
waddstr(curwin, "<3>");
wattroff(curwin, A_BOLD);
waddstr(curwin, " (Save and end the game)");
break;
case KEY_ESC:
case KEY_CANCEL:
case KEY_EXIT:
case KEY_CTRL('C'):
case KEY_CTRL('G'):
case KEY_CTRL('\\'):
selection = SEL_QUIT;
curs_set(CURS_OFF);
wattron(curwin, A_BOLD);
waddstr(curwin, "<CTRL><C>");
wattroff(curwin, A_BOLD);
waddstr(curwin, " (Quit the game)");
break;
default:
beep();
}
}
}
// Clear the menu choices (but not the prompt!)
wattrset(curwin, attr_normal);
for (y = 2; y < 4; y++) {
wmove(curwin, y, 2);
for (x = 2; x < getmaxx(curwin) - 2; x++) {
waddch(curwin, ' ' | attr_normal);
}
}
wrefresh(curwin);
// Ask the player to confirm their choice
mvwaddstr(curwin, 2, 22, "Are you sure?");
if (! answer_yesno(curwin, attr_keycode)) {
selection = SEL_NONE;
}
// Save the game if required
if (selection == SEL_SAVE) {
bool saved = false;
if (game_loaded) {
// Save the game to the same game number
newtxwin(5, 30, 7, WCENTER, true, attr_status_window);
center(curwin, 2, attr_status_window,
"Saving game %d... ", game_num);
wrefresh(curwin);
saved = save_game(game_num);
deltxwin();
txrefresh();
}
if (! saved) {
int key;
bool done;
// Ask which game to save
newtxwin(6, 54, 8, WCENTER, true, attr_normal_window);
center(curwin, 1, attr_title, " Save Game ");
mvwaddstr(curwin, 3, 2, "Enter game number ");
waddstr(curwin, "[");
attrpr(curwin, attr_keycode, "1");
waddstr(curwin, "-");
attrpr(curwin, attr_keycode, "9");
waddstr(curwin, "]");
waddstr(curwin, " or ");
attrpr(curwin, attr_keycode, "<CTRL><C>");
waddstr(curwin, " to cancel: ");
curs_set(CURS_ON);
wrefresh(curwin);
done = false;
while (! done) {
key = gettxchar(curwin);
if (key >= '1' && key <= '9') {
wechochar(curwin, key | A_BOLD);
done = true;
} else {
switch (key) {
case KEY_ESC:
case KEY_CANCEL:
case KEY_EXIT:
case KEY_CTRL('C'):
case KEY_CTRL('G'):
case KEY_CTRL('\\'):
key = KEY_CANCEL;
done = true;
break;
default:
beep();
}
}
}
curs_set(CURS_OFF);
if (key != KEY_CANCEL) {
game_num = key - '0';
// Try to save the game, if possible
newtxwin(5, 30, 7, WCENTER, true, attr_status_window);
center(curwin, 2, attr_status_window,
"Saving game %d... ", game_num);
wrefresh(curwin);
saved = save_game(game_num);
deltxwin();
txrefresh();
}
deltxwin(); // "Enter game number" window
txrefresh();
}
if (saved) {
selection = SEL_QUIT;
} else {
// Make the next try at saving ask the player for a game number
game_loaded = false;
game_num = 0;
selection = SEL_NONE;
}
}
}
return selection;
}
/***********************************************************************/
// process_move: Process the move selected by the player
void process_move (selection_t selection)
{
if (selection == SEL_QUIT) {
// The players want to end the game
quit_selected = true;
}
if (quit_selected || abort_game) {
deltxwin(); // "Select move" window
deltxwin(); // Galaxy map window
txrefresh();
return;
}
if (selection == SEL_BANKRUPT) {
// A player wants to give up: make them bankrupt
bankrupt_player(false);
} else {
// Process a selection from game_move[]
assert(selection >= SEL_MOVE_FIRST && selection <= SEL_MOVE_LAST);
map_val_t left, right, up, down;
map_val_t nearby, cur;
int x = game_move[selection].x;
int y = game_move[selection].y;
assign_vals(x, y, left, right, up, down);
if (left == MAP_EMPTY && right == MAP_EMPTY &&
up == MAP_EMPTY && down == MAP_EMPTY) {
// The position is out in the middle of nowhere...
galaxy_map[x][y] = MAP_OUTPOST;
} else if (! IS_MAP_COMPANY(left) && ! IS_MAP_COMPANY(right)
&& ! IS_MAP_COMPANY(up) && ! IS_MAP_COMPANY(down)) {
// See if a company can be established
try_start_new_company(x, y);
} else {
// See if two (or more!) companies can be merged
if (IS_MAP_COMPANY(left) && IS_MAP_COMPANY(right)
&& left != right) {
galaxy_map[x][y] = left;
merge_companies(left, right);
assign_vals(x, y, left, right, up, down);
}
if (IS_MAP_COMPANY(left) && IS_MAP_COMPANY(up)
&& left != up) {
galaxy_map[x][y] = left;
merge_companies(left, up);
assign_vals(x, y, left, right, up, down);
}
if (IS_MAP_COMPANY(left) && IS_MAP_COMPANY(down)
&& left != down) {
galaxy_map[x][y] = left;
merge_companies(left, down);
assign_vals(x, y, left, right, up, down);
}
if (IS_MAP_COMPANY(right) && IS_MAP_COMPANY(up)
&& right != up) {
galaxy_map[x][y] = right;
merge_companies(right, up);
assign_vals(x, y, left, right, up, down);
}
if (IS_MAP_COMPANY(right) && IS_MAP_COMPANY(down)
&& right != down) {
galaxy_map[x][y] = right;
merge_companies(right, down);
assign_vals(x, y, left, right, up, down);
}
if (IS_MAP_COMPANY(up) && IS_MAP_COMPANY(down)
&& up != down) {
galaxy_map[x][y] = up;
merge_companies(up, down);
assign_vals(x, y, left, right, up, down);
}
}
// See if an existing company can be expanded
nearby = (IS_MAP_COMPANY(left) ? left :
(IS_MAP_COMPANY(right) ? right :
(IS_MAP_COMPANY(up) ? up :
(IS_MAP_COMPANY(down) ? down :
MAP_EMPTY))));
if (nearby != MAP_EMPTY) {
galaxy_map[x][y] = nearby;
inc_share_price(MAP_TO_COMPANY(nearby), SHARE_PRICE_INC);
}
/* If a company expanded (or merged or formed), see if share
price should be incremented */
cur = galaxy_map[x][y];
if (IS_MAP_COMPANY(cur)) {
// Is a star nearby?
if (left == MAP_STAR) {
inc_share_price(MAP_TO_COMPANY(cur), SHARE_PRICE_INC_STAR);
}
if (right == MAP_STAR) {
inc_share_price(MAP_TO_COMPANY(cur), SHARE_PRICE_INC_STAR);
}
if (up == MAP_STAR) {
inc_share_price(MAP_TO_COMPANY(cur), SHARE_PRICE_INC_STAR);
}
if (down == MAP_STAR) {
inc_share_price(MAP_TO_COMPANY(cur), SHARE_PRICE_INC_STAR);
}
// Is an outpost nearby?
if (left == MAP_OUTPOST) {
include_outpost(MAP_TO_COMPANY(cur), x - 1, y);
}
if (right == MAP_OUTPOST) {
include_outpost(MAP_TO_COMPANY(cur), x + 1, y);
}
if (up == MAP_OUTPOST) {
include_outpost(MAP_TO_COMPANY(cur), x, y - 1);
}
if (down == MAP_OUTPOST) {
include_outpost(MAP_TO_COMPANY(cur), x, y + 1);
}
}
}
if (! quit_selected) {
adjust_values();
}
deltxwin(); // "Select move" window
deltxwin(); // Galaxy map window
txrefresh();
}
/***********************************************************************/
// next_player: Get the next player
void next_player (void)
{
int i;
bool all_out;
all_out = true;
for (i = 0; i < number_players; i++) {
if (player[i].in_game) {
all_out = false;
break;
}
}
if (all_out) {
quit_selected = true;
} else {
do {
current_player++;
if (current_player == number_players) {
current_player = 0;
}
if (current_player == first_player) {
turn_number++;
}
} while (! player[current_player].in_game);
}
}
/************************************************************************
* Module-specific function definitions *
************************************************************************/
// These functions are documented at the start of this file
/***********************************************************************/
// bankrupt_player: Make the current player bankrupt
void bankrupt_player (bool forced)
{
bool longname;
int i;
/* It would be nice if we had functions that would do word-wrapping
for us automatically! */
longname = (strlen(player[current_player].name) > 20);
if (forced) {
newtxwin(longname ? 9 : 8, 54, 7, WCENTER, true, attr_error_window);
} else {
newtxwin(longname ? 8 : 7, 50, 7, WCENTER, true, attr_error_window);
}
center(curwin, 1, attr_error_title, " Bankruptcy Court ");
if (forced) {
if (longname) {
center(curwin, 3, attr_error_highlight, "%s",
player[current_player].name);
center(curwin, 4, attr_error_highlight,
"has been declared bankrupt by the");
center(curwin, 5, attr_error_highlight,
"Interstellar Trading Bank");
} else {
center(curwin, 3, attr_error_highlight,
"%s has been declared bankrupt",
player[current_player].name);
center(curwin, 4, attr_error_highlight,
"by the Interstellar Trading Bank");
}
} else {
if (longname) {
center(curwin, 3, attr_error_highlight, "%s",
player[current_player].name);
center(curwin, 4, attr_error_highlight,
"has declared bankruptcy");
} else {
center(curwin, 3, attr_error_highlight,
"%s has declared bankruptcy",
player[current_player].name);
}
}
wait_for_key(curwin, getmaxy(curwin) - 2, attr_error_waitforkey);
deltxwin();
txrefresh();
// Confiscate all assets belonging to player
player[current_player].in_game = false;
for (i = 0; i < MAX_COMPANIES; i++) {
company[i].stock_issued -= player[current_player].stock_owned[i];
player[current_player].stock_owned[i] = 0;
}
player[current_player].cash = 0.0;
player[current_player].debt = 0.0;
// Is anyone still left in the game?
bool all_out = true;
for (i = 0; i < number_players; i++) {
if (player[i].in_game) {
all_out = false;
break;
}
}
if (all_out) {
quit_selected = true;
}
}
/***********************************************************************/
// try_start_new_company: See it a new company can be started
void try_start_new_company (int x, int y)
{
bool all_on_map;
map_val_t left, right, up, down;
int i, j;
assert(x >= 0 && x < MAX_X);
assert(y >= 0 && y < MAX_Y);
assign_vals(x, y, left, right, up, down);
if ( left != MAP_OUTPOST && left != MAP_STAR
&& right != MAP_OUTPOST && right != MAP_STAR
&& up != MAP_OUTPOST && up != MAP_STAR
&& down != MAP_OUTPOST && down != MAP_STAR) {
return;
}
all_on_map = true;
for (i = 0; i < MAX_COMPANIES; i++) {
if (! company[i].on_map) {
all_on_map = false;
break;
}
}
if (all_on_map) {
// The galaxy cannot support any more companies
galaxy_map[x][y] = MAP_OUTPOST;
} else {
// Create the new company
newtxwin(8, 50, 7, WCENTER, true, attr_normal_window);
center(curwin, 1, attr_title, " New Company ");
center(curwin, 3, attr_normal, "A new company has been formed!");
center2(curwin, 4, attr_normal, attr_highlight, "Its name is ",
"%s", company[i].name);
wait_for_key(curwin, 6, attr_waitforkey);
deltxwin();
txrefresh();
galaxy_map[x][y] = COMPANY_TO_MAP(i);
company[i].share_price = INITIAL_SHARE_PRICE;
company[i].share_return = INITIAL_RETURN;
company[i].stock_issued = INITIAL_STOCK_ISSUED;
company[i].max_stock = INITIAL_MAX_STOCK;
company[i].on_map = true;
for (j = 0; j < number_players; j++) {
player[j].stock_owned[i] = 0;
}
player[current_player].stock_owned[i] = INITIAL_STOCK_ISSUED;
}
}
/***********************************************************************/
// merge_companies: Merge two companies together
void merge_companies (map_val_t a, map_val_t b)
{
int aa = MAP_TO_COMPANY(a);
int bb = MAP_TO_COMPANY(b);
double val_aa = company[aa].share_price * company[aa].stock_issued *
company[aa].share_return;
double val_bb = company[bb].share_price * company[bb].stock_issued *
company[bb].share_return;
long int old_stock, new_stock, total_new;
int x, y, i, line;
double bonus;
char *buf;
buf = malloc(BUFSIZE);
if (buf == NULL) {
err_exit_nomem();
}
if (val_aa < val_bb) {
// Make sure aa is the dominant company
map_val_t t;
int tt;
t = a; a = b; b = t;
tt = aa; aa = bb; bb = tt;
}
// Display information about the merger
newtxwin(number_players + 14, WIN_COLS - 4, 9 - number_players,
WCENTER, true, attr_normal_window);
center(curwin, 1, attr_title, " Company Merger ");
center3(curwin, 3, attr_highlight, attr_highlight, attr_normal,
company[bb].name, company[aa].name, " has just merged into ");
center(curwin, 5, attr_normal, "Please note the following transactions:");
center2(curwin, 7, attr_normal, attr_highlight, " Old stock: ",
"%-20s", company[bb].name);
center2(curwin, 8, attr_normal, attr_highlight, " New stock: ",
"%-20s", company[aa].name);
// Handle the locale's currency symbol
snprintf(buf, BUFSIZE, "Bonus (%s)", lconvinfo.currency_symbol);
int w = getmaxx(curwin) - 52;
wattrset(curwin, attr_subtitle);
mvwprintw(curwin, 10, 2, " %-*.*s %8s %8s %8s %12s ", w, w,
"Player", "Old", "New", "Total", buf);
wattrset(curwin, attr_normal);
total_new = 0;
for (line = 11, i = 0; i < number_players; i++) {
if (player[i].in_game) {
// Calculate new stock and any bonus
old_stock = player[i].stock_owned[bb];
new_stock = (double) old_stock * MERGE_STOCK_RATIO;
total_new += new_stock;
bonus = (company[bb].stock_issued == 0) ? 0.0 :
10.0 * ((double) player[i].stock_owned[bb]
/ company[bb].stock_issued) * company[bb].share_price;
player[i].stock_owned[aa] += new_stock;
player[i].stock_owned[bb] = 0;
player[i].cash += bonus;
l_strfmon(buf, BUFSIZE, "%!12n", bonus);
mvwprintw(curwin, line, 2, " %-*.*s %'8ld %'8ld %'8ld %12s ",
w, w, player[i].name, old_stock, new_stock,
player[i].stock_owned[aa], buf);
line++;
}
}
// Adjust the company records appropriately
company[aa].stock_issued += total_new;
company[aa].max_stock += total_new;
company[aa].share_price += company[bb].share_price / (randf() + 1.5);
company[bb].stock_issued = 0;
company[bb].max_stock = 0;
company[bb].on_map = false;
// Adjust the galaxy map appropriately
for (x = 0; x < MAX_X; x++) {
for (y = 0; y < MAX_Y; y++) {
if (galaxy_map[x][y] == b) {
galaxy_map[x][y] = a;
}
}
}
wait_for_key(curwin, getmaxy(curwin) - 2, attr_waitforkey);
deltxwin(); // "Company merger" window
txrefresh();
free(buf);
}
/***********************************************************************/
// include_outpost: Include any outposts into the company
void include_outpost (int num, int x, int y)
{
map_val_t left, right, up, down;
assert(num >= 0 && num < MAX_COMPANIES);
assert(x >= 0 && x < MAX_X);
assert(y >= 0 && y < MAX_Y);
assign_vals(x, y, left, right, up, down);
galaxy_map[x][y] = COMPANY_TO_MAP(num);
inc_share_price(num, SHARE_PRICE_INC_OUTPOST);
// Outposts next to stars are more valuable: increment again
if (left == MAP_STAR) {
inc_share_price(num, SHARE_PRICE_INC_OUTSTAR);
}
if (right == MAP_STAR) {
inc_share_price(num, SHARE_PRICE_INC_OUTSTAR);
}
if (up == MAP_STAR) {
inc_share_price(num, SHARE_PRICE_INC_OUTSTAR);
}
if (down == MAP_STAR) {
inc_share_price(num, SHARE_PRICE_INC_OUTSTAR);
}
// Include any nearby outposts
if (left == MAP_OUTPOST) {
include_outpost(num, x - 1, y);
}
if (right == MAP_OUTPOST) {
include_outpost(num, x + 1, y);
}
if (up == MAP_OUTPOST) {
include_outpost(num, x, y - 1);
}
if (down == MAP_OUTPOST) {
include_outpost(num, x, y + 1);
}
}
/***********************************************************************/
// inc_share_price: Increase the share price of a company
void inc_share_price (int num, double inc)
{
assert(num >= 0 && num < MAX_COMPANIES);
company[num].share_price += inc * (1.0 + randf() * SHARE_PRICE_INC_EXTRA);
company[num].max_stock += inc / (randf() * 10.0 + 5.0);
if (randf() < GROWING_RETURN_CHANGE) {
company[num].share_return *= randf() + GROWING_RETURN_INC;
}
}
/***********************************************************************/
// adjust_values: Adjust various company-related values
void adjust_values (void)
{
int i, x, y;
int which;
// Declare a company bankrupt!
if (randf() > (1.0 - COMPANY_BANKRUPTCY)) {
which = randi(MAX_COMPANIES);
if (company[which].on_map) {
if (randf() < ALL_ASSETS_TAKEN) {
newtxwin(10, 60, 6, WCENTER, true, attr_error_window);
center(curwin, 1, attr_error_title, " Bankruptcy Court ");
center(curwin, 3, attr_error_highlight, "%s has been declared",
company[which].name);
center(curwin, 4, attr_error_highlight,
"bankrupt by the Interstellar Trading Bank.");
center(curwin, 6, attr_error_window,
"All assets have been taken to repay outstanding loans.");
wait_for_key(curwin, 8, attr_error_waitforkey);
deltxwin();
txrefresh();
} else {
double rate = randf();
char *buf;
buf = malloc(BUFSIZE);
if (buf == NULL) {
err_exit_nomem();
}
for (i = 0; i < number_players; i++) {
if (player[i].in_game) {
player[i].cash += player[i].stock_owned[which] * rate;
}
}
newtxwin(14, 60, 4, WCENTER, true, attr_error_window);
center(curwin, 1, attr_error_title, " Bankruptcy Court ");
center(curwin, 3, attr_error_highlight, "%s has been declared",
company[which].name);
center(curwin, 4, attr_error_highlight,
"bankrupt by the Interstellar Trading Bank.");
center2(curwin, 6, attr_error_normal, attr_error_highlight,
"The Bank has agreed to pay stock holders ",
"%4.2f%%", rate * 100.0);
center(curwin, 7, attr_error_normal,
"of the share value on each share owned.");
l_strfmon(buf, BUFSIZE, "%12n", company[which].share_price);
center2(curwin, 9, attr_error_normal, attr_error_highlight,
"Old share value: ", "%s", buf);
l_strfmon(buf, BUFSIZE, "%12n", company[which].share_price
* rate);
center2(curwin, 10, attr_error_normal, attr_error_highlight,
"Amount paid per share: ", "%s", buf);
wait_for_key(curwin, 12, attr_error_waitforkey);
deltxwin();
txrefresh();
free(buf);
}
for (i = 0; i < number_players; i++) {
player[i].stock_owned[which] = 0;
}
company[which].share_price = 0.0;
company[which].share_return = 0.0;
company[which].stock_issued = 0;
company[which].max_stock = 0;
company[which].on_map = false;
for (x = 0; x < MAX_X; x++) {
for (y = 0; y < MAX_Y; y++) {
if (galaxy_map[x][y] == COMPANY_TO_MAP((unsigned int) which)) {
galaxy_map[x][y] = MAP_EMPTY;
}
}
}
}
}
// Increase or decrease company return
if (randf() < CHANGE_COMPANY_RETURN) {
which = randi(MAX_COMPANIES);
if (company[which].on_map) {
company[which].share_return *= randf() + COMPANY_RETURN_INC;
}
}
// Make sure that a company's return is not too large
for (i = 0; i < MAX_COMPANIES; i++) {
if (company[i].on_map && company[i].share_return > MAX_COMPANY_RETURN) {
company[i].share_return /= randf() + RETURN_DIVIDER;
}
}
// Increase or decrease share price
if (randf() < INC_SHARE_PRICE) {
which = randi(MAX_COMPANIES);
if (company[which].on_map) {
double change = randf() * company[which].share_price
* PRICE_CHANGE_RATE;
if (randf() < DEC_SHARE_PRICE) {
change = -change;
}
company[which].share_price += change;
}
}
// Give the current player the companies' dividends
for (i = 0; i < MAX_COMPANIES; i++) {
if (company[i].on_map && company[i].stock_issued != 0) {
player[current_player].cash += player[current_player].stock_owned[i]
* company[i].share_price * company[i].share_return
+ ((double) player[current_player].stock_owned[i]
/ company[i].stock_issued) * company[i].share_price
* OWNERSHIP_BONUS;
}
}
// Change the interest rate
if (randf() < CHANGE_INTEREST_RATE) {
interest_rate *= randf() + INTEREST_RATE_INC;
}
if (interest_rate > MAX_INTEREST_RATE) {
interest_rate /= randf() + INTEREST_RATE_DIVIDER;
}
// Calculate current player's debt
player[current_player].debt *= interest_rate + 1.0;
// Check if a player's debt is too large
if (total_value(current_player) <= -MAX_OVERDRAFT) {
double impounded;
char *buf;
buf = malloc(BUFSIZE);
if (buf == NULL) {
err_exit_nomem();
}
impounded = MIN(player[current_player].cash,
player[current_player].debt);
newtxwin(8, 60, 7, WCENTER, true, attr_error_window);
center(curwin, 1, attr_error_title, " Interstellar Trading Bank ");
l_strfmon(buf, BUFSIZE, "%1n", player[current_player].debt);
center(curwin, 3, attr_error_highlight,
"Your debt has amounted to %s", buf);
l_strfmon(buf, BUFSIZE, "%1n", impounded);
center3(curwin, 4, attr_error_normal, attr_error_normal,
attr_error_highlight, "The Bank has impounded ",
" from your cash", "%s", buf);
wait_for_key(curwin, 6, attr_error_waitforkey);
deltxwin();
txrefresh();
player[current_player].cash -= impounded;
player[current_player].debt -= impounded;
if (player[current_player].cash < ROUNDING_AMOUNT) {
player[current_player].cash = 0.0;
}
if (player[current_player].debt < ROUNDING_AMOUNT) {
player[current_player].debt = 0.0;
}
// Shall we declare them bankrupt?
if (total_value(current_player) <= 0.0 && randf() < PROB_BANKRUPTCY) {
bankrupt_player(true);
}
}
}
/***********************************************************************/
// cmp_game_move: Compare two game_move[] elements for sorting
int cmp_game_move (const void *a, const void *b)
{
const move_rec_t *aa = (const move_rec_t *) a;
const move_rec_t *bb = (const move_rec_t *) b;
if (aa->x < bb->x) {
return -1;
} else if (aa->x > bb->x) {
return 1;
} else {
if (aa->y < bb->y) {
return -1;
} else if (aa->y > bb->y) {
return 1;
} else {
return 0;
}
}
}
/***********************************************************************/
// End of file
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