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/* board.c - Copyright (C) 2001-2002 Jacob Kroon, see COPYING for details */
#include "video.h"
#include "tuxpuck.h"
/* externals */
extern unsigned char board_jpg[];
/* statics */
static SDL_Surface *_sdl_board;
static Uint8 _state = 0, _turn = 0;
static float _coeff[4];
static Pad *_pad_1, *_pad_2;
static Puck *_puck;
static SDL_Rect _rect = { 0, 0, 0, 0 };
/* functions */
static Uint8 _get_scorer(void)
{
float puck_z;
if (puck_is_dead(_puck))
return 0;
entity_get_position((Entity *) _puck, NULL, &puck_z);
if (puck_z > 40)
return 1;
else if (puck_z < -40)
return 2;
return 0;
}
void board_init(void)
{
_state = BOARD_STATE_NEW_PUCK;
_sdl_board = video_create_jpg_surface(board_jpg, NULL);
_rect.x = SCREEN_W / 2 - _sdl_board->w / 2;
_rect.y = SCREEN_H - _sdl_board->h;
_rect.w = _rect.h = 0;
_pad_1 = pad_create(1);
_pad_2 = pad_create(2);
_puck = puck_create();
_turn = 1;
glass_init();
_coeff[0] = 80 * (BOARD_BOTTOM * BOARD_TOP) / (BOARD_BOTTOM - BOARD_TOP);
_coeff[1] = 40 * (BOARD_BOTTOM + BOARD_TOP) / (BOARD_BOTTOM - BOARD_TOP);
_coeff[2] =
80 * (1.0 * BOARD_LEFT / BOARD_RIGHT) / (1.0 - BOARD_LEFT / BOARD_RIGHT);
_coeff[3] =
40 * (1.0 + BOARD_LEFT / BOARD_RIGHT) / (1.0 - BOARD_LEFT / BOARD_RIGHT);
video_fade(_sdl_board, 1000);
}
void board_deinit(void)
{
SDL_FreeSurface(_sdl_board);
pad_free(_pad_1);
pad_free(_pad_2);
puck_free(_puck);
glass_deinit();
}
Pad *board_get_pad(Uint8 who)
{
if (who == 1)
return _pad_1;
else if (who == 2)
return _pad_2;
else
return NULL;
}
Puck *board_get_puck(void)
{
return _puck;
}
void board_blit(void)
{
video_blit(_sdl_board, NULL, &_rect);
}
Uint8 board_update(Uint32 time)
{
Uint8 scorer;
float puck_x, puck_z;
switch (_state) {
case BOARD_STATE_PLAY:
if (puck_will_get_hit_by(_puck, _pad_1, time))
puck_get_hit_by(_puck, _pad_1, time);
else if (puck_will_get_hit_by(_puck, _pad_2, time))
puck_get_hit_by(_puck, _pad_2, time);
puck_move(_puck, time);
break;
case BOARD_STATE_CRASH_GLASS:
if (glass_update(time) == 0) {
glass_erase();
_state = BOARD_STATE_NEW_PUCK;
if (_turn == 1)
_turn = 2;
else
_turn = 1;
}
break;
case BOARD_STATE_NEW_PUCK:
if (_turn == 1) {
if (entity_move_towards((Entity *) _puck, 0, -21, 0.05, time) == 0) {
_state = BOARD_STATE_PLAY;
entity_set_velocity((Entity *) _puck, 0, 0);
puck_set_state(_puck, PUCK_STATE_ALIVE);
}
} else {
if (entity_move_towards((Entity *) _puck, 0, 21, 0.05, time) == 0) {
_state = BOARD_STATE_PLAY;
entity_set_velocity((Entity *) _puck, 0, 0);
puck_set_state(_puck, PUCK_STATE_ALIVE);
}
}
break;
default:
break;
}
if ((scorer = _get_scorer()) != 0) {
_state = BOARD_STATE_CRASH_GLASS;
entity_get_position((Entity *) _puck, &puck_x, &puck_z);
glass_smash(puck_x, puck_z);
puck_set_state(_puck, PUCK_STATE_DEAD);
}
entity_move(_pad_1, time);
entity_move(_pad_2, time);
return scorer;
}
void board_clean_up(void)
{
entity_erase(_pad_1);
entity_erase(_pad_2);
entity_erase((Entity *) _puck);
if (_state == BOARD_STATE_CRASH_GLASS)
glass_erase();
}
void board_reblit(void)
{
float p1, p2, p, g = 0;
entity_get_position(_pad_1, NULL, &p1);
entity_get_position(_pad_2, NULL, &p2);
entity_get_position((Entity *) _puck, NULL, &p);
if (_state == BOARD_STATE_CRASH_GLASS) {
glass_get_position(NULL, &g);
if (g > 0)
glass_blit();
}
if (p < p1) {
entity_blit(_pad_2);
entity_blit(_pad_1);
entity_blit((Entity *) _puck);
} else if (p < p2) {
entity_blit(_pad_2);
entity_blit((Entity *) _puck);
entity_blit(_pad_1);
} else {
entity_blit((Entity *) _puck);
entity_blit(_pad_2);
entity_blit(_pad_1);
}
if (_state == BOARD_STATE_CRASH_GLASS) {
if (g < 0)
glass_blit();
}
}
Uint8 board_get_state(void)
{
return _state;
}
Uint8 board_get_turn(void)
{
return _turn;
}
float board_calc_y(float y)
{
return (_coeff[0] / (_coeff[1] + y));
}
float board_calc_scale(float y)
{
return _coeff[2] / (_coeff[3] + y);
}
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