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fltk/test/blocks.cxx
Albrecht Schlosser 463b3e5d9d Fix blocks demo keyboard handling, add new shortcut. 
The blocks demo was unintentionally intercepting ctrl/+ which was
introduced in FLTK 1.4.0 to change scaling for HiDPI screens. Now this
is separated: use ctrl/+/-/0 to change scaling, use '+' alone to change
the game level.

The new keyboard shortcut ALT+SHIFT+H allows users to reset their high
scores without editing the preferences file.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12354 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2017-07-25 18:44:19 +00:00

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//
// "$Id$"
//
// "Block Attack!" scrolling blocks game using the Fast Light Tool Kit (FLTK).
//
// Copyright 2006-2017 by Michael Sweet.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Preferences.H>
#include <FL/Fl_XPM_Image.H>
#include <FL/Fl_XBM_Image.H>
#include <FL/Fl_Tiled_Image.H>
#include <FL/fl_draw.H>
#include <FL/x.H>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <math.h>
// Audio headers...
#include <config.h>
#if defined(WIN32) || defined(__APPLE__)
#elif defined(FL_PORTING)
# pragma message "FL_PORTING: FLTK does not provide cross platform sound support"
#else
#endif
#ifndef WIN32
# include <unistd.h>
# include <sys/time.h> // gettimeofday()
#endif // !WIN32
#ifdef HAVE_ALSA_ASOUNDLIB_H
# define ALSA_PCM_NEW_HW_PARAMS_API
# include <alsa/asoundlib.h>
#endif // HAVE_ALSA_ASOUNDLIB_H
#ifdef __APPLE__
# include <CoreAudio/AudioHardware.h>
#endif // __APPLE__
#ifdef WIN32
# include <mmsystem.h>
#endif // WIN32
#define BLOCK_COLS 20
#define BLOCK_ROWS 10
#define BLOCK_SIZE 32
#define BLOCK_BLAST 100
// These factors are used to fine-tune the game when these events
// occur by multiplying the timer interval with the given factor:
//
// (a) enter the next game level
// (b) click on a "normal block", destroy this one and adjacent blocks
// (c) click on a "bomb", destroy all blocks of the same color
#define LEVEL_FACTOR 0.90 // was: 0.95
#define NORMAL_FACTOR 0.999
#define BOMB_FACTOR 0.995
// Set this to 1 to debug the timer callback (should be 0)
#define DEBUG_TIMER 0
#include "pixmaps/blast.xpm"
Fl_Pixmap blast_pixmap(blast_xpm);
#include "pixmaps/red.xpm"
Fl_Pixmap red_pixmap(red_xpm);
#include "pixmaps/red_bomb.xpm"
Fl_Pixmap red_bomb_pixmap(red_bomb_xpm);
#include "pixmaps/green.xpm"
Fl_Pixmap green_pixmap(green_xpm);
#include "pixmaps/green_bomb.xpm"
Fl_Pixmap green_bomb_pixmap(green_bomb_xpm);
#include "pixmaps/blue.xpm"
Fl_Pixmap blue_pixmap(blue_xpm);
#include "pixmaps/blue_bomb.xpm"
Fl_Pixmap blue_bomb_pixmap(blue_bomb_xpm);
#include "pixmaps/yellow.xpm"
Fl_Pixmap yellow_pixmap(yellow_xpm);
#include "pixmaps/yellow_bomb.xpm"
Fl_Pixmap yellow_bomb_pixmap(yellow_bomb_xpm);
#include "pixmaps/cyan.xpm"
Fl_Pixmap cyan_pixmap(cyan_xpm);
#include "pixmaps/cyan_bomb.xpm"
Fl_Pixmap cyan_bomb_pixmap(cyan_bomb_xpm);
#include "pixmaps/magenta.xpm"
Fl_Pixmap magenta_pixmap(magenta_xpm);
#include "pixmaps/magenta_bomb.xpm"
Fl_Pixmap magenta_bomb_pixmap(magenta_bomb_xpm);
#include "pixmaps/gray.xpm"
Fl_Pixmap gray_pixmap(gray_xpm);
#include "pixmaps/gray_bomb.xpm"
Fl_Pixmap gray_bomb_pixmap(gray_bomb_xpm);
Fl_Pixmap *normal_pixmaps[] = {
&red_pixmap,
&green_pixmap,
&blue_pixmap,
&yellow_pixmap,
&cyan_pixmap,
&magenta_pixmap,
&gray_pixmap
};
Fl_Pixmap *bomb_pixmaps[] = {
&red_bomb_pixmap,
&green_bomb_pixmap,
&blue_bomb_pixmap,
&yellow_bomb_pixmap,
&cyan_bomb_pixmap,
&magenta_bomb_pixmap,
&gray_bomb_pixmap
};
const unsigned char screen_bits[] = {
0xff, 0x55, 0xff, 0xaa, 0xff, 0x55, 0xff, 0xaa
};
Fl_Bitmap screen_bitmap(screen_bits, 8, 8);
Fl_Tiled_Image screen_tile(&screen_bitmap);
// Sound class...
//
// There are MANY ways to implement sound in a FLTK application.
// The approach we are using here is to conditionally compile OS-
// specific code into the application - CoreAudio for MacOS X, the
// standard Win32 API stuff for Windows, ALSA or X11 for Linux, and
// X11 for all others. We have to support ALSA on Linux because the
// current Xorg releases no longer support XBell() or the PC speaker.
//
// There are several good cross-platform audio libraries we could also
// use, such as OpenAL, PortAudio, and SDL, however they were not chosen
// for this application because of our limited use of sound.
//
// Many thanks to Ian MacArthur who provided sample code that led to
// the CoreAudio implementation you see here!
class BlockSound {
// Private, OS-specific data...
#ifdef __APPLE__
AudioDeviceID device;
#ifndef MAC_OS_X_VERSION_10_5
#define MAC_OS_X_VERSION_10_5 1050
#endif
# if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
AudioDeviceIOProcID audio_proc_id;
# endif
AudioStreamBasicDescription format;
short *data;
int remaining;
static OSStatus audio_cb(AudioDeviceID device,
const AudioTimeStamp *current_time,
const AudioBufferList *data_in,
const AudioTimeStamp *time_in,
AudioBufferList *data_out,
const AudioTimeStamp *time_out,
void *client_data);
#elif defined(WIN32)
HWAVEOUT device;
HGLOBAL header_handle;
LPWAVEHDR header_ptr;
HGLOBAL data_handle;
LPSTR data_ptr;
#else
# ifdef HAVE_ALSA_ASOUNDLIB_H
snd_pcm_t *handle;
# endif // HAVE_ALSA_ASOUNDLIB_H
#endif // __APPLE__
public:
// Common data...
static short *sample_data;
static int sample_size;
BlockSound();
~BlockSound();
void play_explosion(float duration);
};
// Sound class globals...
short *BlockSound::sample_data = NULL;
int BlockSound::sample_size = 0;
// Initialize the BlockSound class
BlockSound::BlockSound() {
sample_size = 0;
#ifdef __APPLE__
remaining = 0;
UInt32 size = sizeof(device);
if (AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice,
&size, (void *)&device) != noErr) return;
size = sizeof(format);
if (AudioDeviceGetProperty(device, 0, false, kAudioDevicePropertyStreamFormat,
&size, &format) != noErr) return;
// Set up a format we like...
format.mSampleRate = 44100.0; // 44.1kHz
format.mChannelsPerFrame = 2; // stereo
if (AudioDeviceSetProperty(device, NULL, 0, false,
kAudioDevicePropertyStreamFormat,
sizeof(format), &format) != noErr) return;
// Check we got linear pcm - what to do if we did not ???
if (format.mFormatID != kAudioFormatLinearPCM) return;
// Attach the callback and start the device
# if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
if (AudioDeviceCreateIOProcID(device, audio_cb, (void *)this, &audio_proc_id) != noErr) return;
AudioDeviceStart(device, audio_proc_id);
# else
if (AudioDeviceAddIOProc(device, audio_cb, (void *)this) != noErr) return;
AudioDeviceStart(device, audio_cb);
# endif
sample_size = (int)format.mSampleRate;
#elif defined(WIN32)
WAVEFORMATEX format;
memset(&format, 0, sizeof(format));
format.cbSize = sizeof(format);
format.wFormatTag = WAVE_FORMAT_PCM;
format.nChannels = 2;
format.nSamplesPerSec = 44100;
format.nAvgBytesPerSec = 44100 * 4;
format.nBlockAlign = 4;
format.wBitsPerSample = 16;
data_handle = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, format.nSamplesPerSec * 4);
if (!data_handle) return;
data_ptr = (LPSTR)GlobalLock(data_handle);
header_handle = GlobalAlloc(GMEM_MOVEABLE | GMEM_SHARE, sizeof(WAVEHDR));
if (!header_handle) return;
header_ptr = (WAVEHDR *)GlobalLock(header_handle);
header_ptr->lpData = data_ptr;
header_ptr->dwFlags = 0;
header_ptr->dwLoops = 0;
if (waveOutOpen(&device, WAVE_MAPPER, &format, 0, 0, WAVE_ALLOWSYNC)
!= MMSYSERR_NOERROR) return;
sample_size = format.nSamplesPerSec;
#else
# ifdef HAVE_ALSA_ASOUNDLIB_H
handle = NULL;
if (snd_pcm_open(&handle, "default", SND_PCM_STREAM_PLAYBACK, 0) >= 0) {
// Initialize PCM sound stuff...
snd_pcm_hw_params_t *params;
snd_pcm_hw_params_alloca(&params);
snd_pcm_hw_params_any(handle, params);
snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED);
snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16);
snd_pcm_hw_params_set_channels(handle, params, 2);
unsigned rate = 44100;
int dir;
snd_pcm_hw_params_set_rate_near(handle, params, &rate, &dir);
snd_pcm_uframes_t period = (int)rate;
snd_pcm_hw_params_set_period_size_near(handle, params, &period, &dir);
sample_size = rate;
if (snd_pcm_hw_params(handle, params) < 0) {
sample_size = 0;
snd_pcm_close(handle);
handle = NULL;
}
}
# endif // HAVE_ALSA_ASOUNDLIB_H
#endif // __APPLE__
if (sample_size) {
// Make an explosion sound by passing white noise through a low pass
// filter with a decreasing frequency...
sample_data = new short[2 * sample_size];
short *sample_ptr = sample_data;
int max_sample = 2 * sample_size - 2;
*sample_ptr++ = 0;
*sample_ptr++ = 0;
for (int j = max_sample; j > 0; j --, sample_ptr ++) {
float freq = (float)j / (float)max_sample;
float volume = 32767.0 * (0.5 * sqrt(freq) + 0.5);
float sample = 0.0001 * ((rand() % 20001) - 10000);
*sample_ptr = (int)(volume * freq * sample +
(1.0 - freq) * sample_ptr[-2]);
}
}
}
// Cleanup the BlockSound class
BlockSound::~BlockSound() {
#ifdef __APPLE__
if (sample_size) {
# if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
AudioDeviceStop(device, audio_proc_id);
AudioDeviceDestroyIOProcID(device, audio_proc_id);
# else
AudioDeviceStop(device, audio_cb);
AudioDeviceRemoveIOProc(device, audio_cb);
# endif
}
#elif defined(WIN32)
if (sample_size) {
waveOutClose(device);
GlobalUnlock(header_handle);
GlobalFree(header_handle);
GlobalUnlock(data_handle);
GlobalFree(data_handle);
}
#else
# ifdef HAVE_ALSA_ASOUNDLIB_H
if (handle) {
snd_pcm_drain(handle);
snd_pcm_close(handle);
}
# endif // HAVE_ALSA_ASOUNDLIB_H
#endif // __APPLE__
if (sample_size) {
delete[] sample_data;
}
}
#ifdef __APPLE__
// Callback function for writing audio data...
OSStatus BlockSound::audio_cb(AudioDeviceID device,
const AudioTimeStamp *current_time,
const AudioBufferList *data_in,
const AudioTimeStamp *time_in,
AudioBufferList *data_out,
const AudioTimeStamp *time_out,
void *client_data) {
BlockSound *ss = (BlockSound *)client_data;
int count;
float *buffer;
if (!ss->remaining) return noErr;
for (count = data_out->mBuffers[0].mDataByteSize / sizeof(float),
buffer = (float*) data_out->mBuffers[0].mData;
ss->remaining > 0 && count > 0;
count --, ss->data ++, ss->remaining --) {
*buffer++ = *(ss->data) / 32767.0;
}
while (count > 0) {
*buffer++ = 0.0;
count --;
}
return noErr;
}
#endif // __APPLE__
// Play a note for the given amount of time...
void BlockSound::play_explosion(float duration) {
Fl::check();
if (duration <= 0.0)
return;
#if defined(__APPLE__) || defined(WIN32) || defined(HAVE_ALSA_ASOUNDLIB_H)
if (duration > 1.0)
duration = 1.0;
int samples = (int)(duration * sample_size);
short *sample_ptr = sample_data + 2 * (sample_size - samples);
#endif // __APPLE__ || WIN32 || HAVE_ALSA_ASOUNDLIB_H
#ifdef __APPLE__
// Point to the next note...
data = sample_ptr;
remaining = samples * 2;
#elif defined(WIN32)
if (sample_size) {
memcpy(data_ptr, sample_ptr, samples * 4);
header_ptr->dwBufferLength = samples * 4;
waveOutPrepareHeader(device, header_ptr, sizeof(WAVEHDR));
waveOutWrite(device, header_ptr, sizeof(WAVEHDR));
} else
Beep(440, (int)(1000.0 * duration));
#elif defined(HAVE_ALSA_ASOUNDLIB_H)
if (handle) {
// Use ALSA to play the sound...
if (snd_pcm_writei(handle, sample_ptr, samples) < 0) {
snd_pcm_prepare(handle);
snd_pcm_writei(handle, sample_ptr, samples);
}
return;
}
#endif // __APPLE__
}
class BlockWindow : public Fl_Double_Window {
public:
struct Block {
int color;
bool bomb;
int y;
};
struct Column {
int num_blocks;
Block blocks[BLOCK_ROWS];
int x;
};
private:
Fl_Button *help_button_,
*play_button_;
int num_columns_;
Column columns_[BLOCK_COLS];
int count_;
bool help_;
int high_score_;
float interval_;
int level_;
int num_colors_;
int opened_columns_;
bool paused_;
static Fl_Preferences prefs_;
int score_;
BlockSound *sound_;
char title_[255];
int title_y_;
void _BlockWindow();
int bomb(int color);
int click(int col, int row);
static void help_cb(Fl_Widget *wi, BlockWindow *bw);
void init();
static void play_cb(Fl_Widget *wi, BlockWindow *bw);
static void timeout_cb(BlockWindow *bw);
public:
BlockWindow(int X, int Y, int W, int H, const char *L = 0);
BlockWindow(int W, int H, const char *L = 0);
~BlockWindow();
void draw();
int handle(int event);
void new_game();
int score() { return (score_); }
void up_level();
};
Fl_Preferences BlockWindow::prefs_(Fl_Preferences::USER, "fltk.org", "blocks");
int main(int argc, char *argv[]) {
Fl::scheme("plastic");
Fl::visible_focus(0);
BlockWindow *bw = new BlockWindow(BLOCK_COLS * BLOCK_SIZE,
BLOCK_ROWS * BLOCK_SIZE + 20,
"Block Attack!");
bw->show(argc, argv);
return (Fl::run());
}
// Create a block window at the specified position
BlockWindow::BlockWindow(int X, int Y, int W, int H, const char *L)
: Fl_Double_Window(X, Y, W, H, L) {
_BlockWindow();
}
// Create a block window
BlockWindow::BlockWindow(int W, int H, const char *L)
: Fl_Double_Window(W, H, L) {
_BlockWindow();
}
// Delete a block window
BlockWindow::~BlockWindow() {
Fl::remove_timeout((Fl_Timeout_Handler)timeout_cb, (void *)this);
}
// Initialize a block window...
void BlockWindow::_BlockWindow() {
init();
help_button_ = new Fl_Button(0, 0, 20, 20, "?");
help_button_->callback((Fl_Callback *)help_cb, this);
help_button_->shortcut('?');
play_button_ = new Fl_Button(80, (h() - 80) / 2, 80, 80, "@>");
play_button_->callback((Fl_Callback *)play_cb, this);
play_button_->labelsize(44);
play_button_->shortcut(' ');
sound_ = new BlockSound();
prefs_.get("high_score", high_score_, 0);
Fl::add_timeout(0.1, (Fl_Timeout_Handler)timeout_cb, (void *)this);
}
// Bomb all blocks of a given color and return the number of affected blocks
int BlockWindow::bomb(int color) {
int j, k;
int count;
Block *b;
Column *c;
if (color >= BLOCK_BLAST) return (0);
for (j = num_columns_, c = columns_, count = 1; j > 0; j --, c ++)
for (k = c->num_blocks, b = c->blocks; k > 0; k --, b ++)
if (b->color == color) {
b->color = -color;
count ++;
}
return (count);
}
// Tag all blocks connected to the clicked block and return the number
// of affected blocks
int BlockWindow::click(int col, int row) {
Block *b;
Column *c;
int count, color;
c = columns_ + col;
b = c->blocks + row;
color = b->color;
if (color < 0 || color >= BLOCK_BLAST) return (0);
// Find the bottom block...
while (row > 0 && b[-1].color == color) {
row --;
b --;
}
count = 0;
while (row < c->num_blocks && b->color == color) {
b->color = -color;
if (col > 0 && row < c[-1].num_blocks &&
c[-1].blocks[row].color == color) {
count += click(col - 1, row);
}
if (col < (num_columns_ - 1) && row < c[1].num_blocks &&
c[1].blocks[row].color == color) {
count += click(col + 1, row);
}
count ++;
row ++;
b ++;
}
return (count);
}
// Draw the block window...
void BlockWindow::draw() {
int j, k, xx, yy;
Block *b;
Column *c;
// Draw the blocks...
fl_color(FL_BLACK);
fl_rectf(0, 0, w(), h());
// Draw the blocks...
for (j = num_columns_, c = columns_; j > 0; j --, c ++)
for (k = c->num_blocks, b = c->blocks; k > 0; k --, b ++) {
xx = w() - c->x;
yy = h() - BLOCK_SIZE - b->y;
if (b->color >= BLOCK_BLAST) {
b->color ++;
blast_pixmap.draw(xx, yy);
} else if (b->color < 0) {
if (b->bomb) bomb_pixmaps[-b->color - 1]->draw(xx, yy);
else normal_pixmaps[-b->color - 1]->draw(xx, yy);
} else {
if (b->bomb) bomb_pixmaps[b->color - 1]->draw(xx, yy);
else normal_pixmaps[b->color - 1]->draw(xx, yy);
}
}
if (interval_ < 0.0 || paused_) {
fl_color(FL_BLACK);
screen_tile.draw(0, 0, w(), h(), 0, 0);
}
// Redraw the widgets...
play_button_->redraw();
help_button_->redraw();
draw_children();
// Draw any paused/game over/new game message...
if ((paused_ || interval_ < 0.0) && play_button_->w() == 80) {
const char *s;
if (help_) {
s = "Click on adjacent blocks of the same color. Clear all blocks "
"before they reach the left side.";
fl_font(FL_HELVETICA_BOLD, 24);
fl_color(FL_BLACK);
fl_draw(s, 171, 3, w() - 250, h() - 6,
(Fl_Align)(FL_ALIGN_WRAP | FL_ALIGN_LEFT));
fl_color(FL_YELLOW);
fl_draw(s, 168, 0, w() - 250, h(),
(Fl_Align)(FL_ALIGN_WRAP | FL_ALIGN_LEFT));
} else {
if (interval_ < 0.0) {
#ifdef DEBUG
// Show sample waveform...
short *sample_ptr;
for (i = 0; i < 2; i++) {
fl_color(FL_RED + i);
fl_begin_line();
for (j = 0, sample_ptr = sound_->sample_data + i;
j < sound_->sample_size;
j ++, sample_ptr += 2)
fl_vertex(j * w() / sound_->sample_size,
*sample_ptr * h() / 4 / 65534 + h() / 2);
fl_end_line();
}
#endif // DEBUG
if (num_columns_ && (time(NULL) & 7) < 4)
s = "Game Over";
else
s = "Block Attack!\nby Michael R Sweet";
} else
s = "Paused";
fl_font(FL_HELVETICA_BOLD, 32);
fl_color(FL_BLACK);
fl_draw(s, 6, 6, w() - 6, h() - 6, FL_ALIGN_CENTER);
fl_color(FL_YELLOW);
fl_draw(s, 0, 0, w(), h(), FL_ALIGN_CENTER);
}
}
// Draw the scores and level...
char s[255];
sprintf(s, " Score: %d", score_);
fl_color(FL_WHITE);
fl_font(FL_HELVETICA, 14);
fl_draw(s, 40, 0, w() - 40, 20, FL_ALIGN_LEFT);
sprintf(s, "High Score: %d ", high_score_);
fl_draw(s, 0, 0, w(), 20, FL_ALIGN_RIGHT);
if (level_ > 1 || title_y_ <= 0) {
sprintf(s, "Level: %d ", level_);
fl_draw(s, 0, 0, w(), 20, FL_ALIGN_CENTER);
}
if (title_y_ > 0 && interval_ > 0.0) {
int sz = 14 + title_y_ * 86 / h();
fl_font(FL_HELVETICA_BOLD, sz);
fl_color(FL_YELLOW);
fl_draw(title_, 0, title_y_, w(), sz, FL_ALIGN_CENTER);
}
}
// Handle mouse clicks, etc.
int BlockWindow::handle(int event) {
int j, k, mx, my, count;
Block *b;
Column *c;
if (Fl_Double_Window::handle(event)) return (1);
else if (interval_ < 0.0 || paused_) return (0);
switch (event) {
case FL_KEYBOARD:
// '+': raise level
if (Fl::event_text() &&
!Fl::event_state(FL_CTRL | FL_ALT | FL_META) &&
!strcmp(Fl::event_text(), "+")) {
up_level();
return (1);
}
// ALT + SHIFT + 'H': clear highscore
if (Fl::event_text() &&
(Fl::event_state() & (FL_ALT | FL_SHIFT)) == (FL_ALT | FL_SHIFT) &&
!strcmp(Fl::event_text(), "H")) {
high_score_ = score_;
prefs_.set("high_score", high_score_);
return (1);
}
break;
case FL_PUSH:
mx = w() - Fl::event_x() + BLOCK_SIZE;
my = h() - Fl::event_y();
count = 0;
b = 0;
for (j = 0, c = columns_; !count && j < num_columns_; j ++, c ++)
for (k = 0, b = c->blocks; !count && k < c->num_blocks; k ++, b ++)
if (mx >= c->x && mx < (c->x + BLOCK_SIZE) &&
my >= b->y && my < (b->y + BLOCK_SIZE)) {
if (b->bomb) count = bomb(b->color);
else count = click(j, k);
break;
}
if (count < 2) {
for (j = 0, c = columns_; j < num_columns_; j ++, c ++)
for (k = 0, b = c->blocks; k < c->num_blocks; k ++, b ++)
if (b->color < 0) b->color = -b->color;
} else {
count --;
if (b->bomb) {
sound_->play_explosion(0.19 + 0.005 * count);
interval_ *= BOMB_FACTOR;
score_ += count;
} else {
sound_->play_explosion(0.09 + 0.005 * count);
interval_ *= NORMAL_FACTOR;
score_ += count * count;
}
if (score_ > high_score_) {
high_score_ = score_;
prefs_.set("high_score", high_score_);
}
for (j = 0, c = columns_; j < num_columns_; j ++, c ++)
for (k = 0, b = c->blocks; k < c->num_blocks; k ++, b ++)
if (b->color < 0) b->color = BLOCK_BLAST;
}
return (1);
default:
break;
}
return (0);
}
// Toggle the on-line help...
void BlockWindow::help_cb(Fl_Widget *, BlockWindow *bw) {
bw->paused_ = bw->help_ = !bw->help_;
bw->play_button_->label("@>");
bw->redraw();
}
// Initialize the block window...
void BlockWindow::init() {
count_ = 0;
help_ = false;
interval_ = -1.0;
level_ = 1;
num_colors_ = 3;
num_columns_ = 0;
paused_ = false;
score_ = 0;
title_[0] = '\0';
title_y_ = 0;
}
// Start a new game...
void BlockWindow::new_game() {
// Seed the random number generator...
srand(time(NULL));
init();
interval_ = 0.1;
opened_columns_ = 0;
strcpy(title_, "Level: 1");
title_y_ = h();
redraw();
}
// Play/pause...
void BlockWindow::play_cb(Fl_Widget *wi, BlockWindow *bw) {
if (bw->interval_ < 0) bw->new_game();
else bw->paused_ = !bw->paused_;
if (bw->paused_) wi->label("@>");
else {
wi->label("@-2||");
bw->help_ = false;
}
}
void BlockWindow::up_level() {
interval_ *= LEVEL_FACTOR;
opened_columns_ = 0;
if (num_colors_ < 7) num_colors_ ++;
level_ ++;
sprintf(title_, "Level: %d", level_);
title_y_ = h();
}
// Animate the game...
void BlockWindow::timeout_cb(BlockWindow *bw) {
int i, j;
Block *b;
Column *c;
int lastx, lasty;
#if DEBUG_TIMER
static double lasttime;
static double delta_sum;
static double interval;
double curtime;
static int ntime = 0;
static int level = 0;
#if !defined(WIN32)
{
struct timeval atime;
gettimeofday(&atime, NULL);
curtime = atime.tv_sec % 60 + 0.000001 * atime.tv_usec;
}
#else // (WIN32)
{
SYSTEMTIME atime;
GetLocalTime(&atime);
curtime = atime.wSecond + 0.001 * atime.wMilliseconds;
}
#endif // (WIN32)
// platform independent part of timer debugging code
if (bw->interval_ > 0) { // game is active
if (bw->level_ != level) {
if (ntime > 0) {
printf("*** average delta time = %9.6f, n =%4d, level %d, interval %f\n",
delta_sum / ntime, ntime, level, interval);
fflush(stdout);
}
delta_sum = 0; // reset average
ntime = 0;
interval = bw->interval_;
}
double delta = curtime - lasttime;
if (delta < 0)
delta += 60;
printf("%9.6f (%+f - %f = %9.6f), level: %d\n",
curtime, delta, interval, delta - interval, level);
fflush(stdout);
interval = bw->interval_;
level = bw->level_;
delta = delta - interval;
delta_sum += delta > 0 ? delta : -delta; // abs(delta)
ntime++;
} else { // waiting ...
// printf("[OFF] %6.2f\n", curtime);
// fflush(stdout);
}
lasttime = curtime;
#endif // DEBUG_TIMER
// Update blocks that have been destroyed...
for (i = 0, c = bw->columns_; i < bw->num_columns_; i ++, c ++)
for (j = 0, b = c->blocks; j < c->num_blocks; j ++, b ++)
if (b->color > (BLOCK_BLAST + 1)) {
bw->redraw();
c->num_blocks --;
if (j < c->num_blocks) {
memmove(b, b + 1, (c->num_blocks - j) * sizeof(Block));
}
j --;
b --;
if (!c->num_blocks) {
bw->num_columns_ --;
if (i < bw->num_columns_) {
memmove(c, c + 1, (bw->num_columns_ - i) * sizeof(Column));
}
i --;
c --;
j = c->num_blocks;
}
}
// Let the rest of the blocks fall and/or move...
for (i = bw->num_columns_, c = bw->columns_, lastx = c->x; i > 0; i--, c++) {
if (c->x > lastx) {
c->x -= 8;
bw->redraw();
}
lastx = c->x + BLOCK_SIZE;
if (!bw->paused_ && bw->interval_ > 0.0) {
bw->redraw();
c->x ++;
}
for (j = c->num_blocks, b = c->blocks, lasty = 0; j > 0; j --, b ++) {
if (b->y > lasty) {
bw->redraw();
b->y -= 8;
}
lasty = b->y + BLOCK_SIZE;
}
}
// Slide the title text as needed...
if (bw->title_y_ > 0) {
bw->redraw();
bw->title_y_ -= 5;
}
// Play the game...
if (!bw->paused_ && bw->interval_ > 0.0) {
bw->count_ --;
if (bw->count_ <= 0) {
bw->redraw();
bw->count_ = BLOCK_SIZE;
if (bw->num_columns_ == BLOCK_COLS) {
bw->interval_ = -1.0;
bw->sound_->play_explosion(0.8);
bw->play_button_->label("@>");
} else {
bw->opened_columns_ ++;
if (bw->opened_columns_ > (2 * BLOCK_COLS)) {
bw->up_level();
}
c = bw->columns_;
if (bw->num_columns_) {
memmove(c + 1, c, bw->num_columns_ * sizeof(Column));
}
bw->num_columns_ ++;
c->x = 0;
c->num_blocks = BLOCK_ROWS;
for (j = 0, b = c->blocks; j < BLOCK_ROWS; j ++, b ++) {
b->bomb = bw->num_colors_ > 3 && (rand() & 127) < bw->num_colors_;
b->color = 1 + (rand() % bw->num_colors_);
b->y = j * (BLOCK_SIZE + 8) + 24;
}
}
}
} else {
bw->count_ --;
if (bw->count_ <= 0) {
bw->count_ = 40;
bw->redraw();
}
}
// Update the play/pause button as needed...
if ((bw->paused_ || bw->interval_< 0.0) &&
bw->play_button_->w() < 80) {
int s = bw->play_button_->w() + 10;
bw->play_button_->resize(s, (s - 20) * (bw->h() - s) / 120, s, s);
bw->play_button_->labelsize(s / 2 + 4);
bw->redraw();
} else if ((!bw->paused_ && bw->interval_ > 0.0) &&
bw->play_button_->w() > 20) {
int s = bw->play_button_->w() - 5;
bw->play_button_->resize(s, (s - 20) * (bw->h() - s) / 120, s, s);
bw->play_button_->labelsize(s / 2 + 4);
bw->redraw();
}
if (bw->interval_ > 0.0) {
Fl::repeat_timeout(bw->interval_, (Fl_Timeout_Handler)timeout_cb, (void *)bw);
} else {
Fl::repeat_timeout(0.1, (Fl_Timeout_Handler)timeout_cb, (void *)bw);
}
}
//
// End of "$Id$".
//
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