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Edje Documentation <small>at Tue Feb 8 2011</small>
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<h1>embryo_pong.edc</h1> </div>
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<p>Super-simple Pong implementation in pure embryo.</p>
<div class="fragment"><pre class="fragment">
<span class="preprocessor">#define DEBUG_ENABLE 0</span>
<span class="preprocessor"></span><span class="preprocessor">#define FPS 30</span>
<span class="preprocessor"></span><span class="preprocessor">#define COLOR_BG 50 50 50 255</span>
<span class="preprocessor"></span><span class="preprocessor">#define COLOR_FG 222 222 222 255</span>
<span class="preprocessor"></span><span class="preprocessor">#define PAD_SIZE 60</span>
<span class="preprocessor"></span><span class="preprocessor">#define PAD_DISTANCE 20</span>
<span class="preprocessor"></span><span class="preprocessor">#define BALL_SPEED 5.0</span>
<span class="preprocessor"></span><span class="preprocessor">#define BALL_SPEEDUP 0.1</span>
<span class="preprocessor"></span><span class="preprocessor">#define BALL_SIZE 10</span>
<span class="preprocessor"></span>
<span class="preprocessor">#if DEBUG_ENABLE</span>
<span class="preprocessor"></span><span class="preprocessor">#define DBG(...) { \</span>
<span class="preprocessor"> new _buf[128]; \</span>
<span class="preprocessor"> snprintf(_buf, sizeof(_buf), __VA_ARGS__); \</span>
<span class="preprocessor"> set_text(PART:"dbg", _buf); }</span>
<span class="preprocessor"></span><span class="preprocessor">#else</span>
<span class="preprocessor"></span><span class="preprocessor">#define DBG(...)</span>
<span class="preprocessor"></span><span class="preprocessor">#endif</span>
<span class="preprocessor"></span>
collections {
group { <a name="a0"></a><a class="code" href="edje__data_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>: <span class="stringliteral">"main"</span>;
min: 500 300;
script {
<span class="keyword">public</span> ballx, bally;
<span class="keyword">public</span> ballspeedx, ballspeedy;
<span class="keyword">public</span> player_score, ai_score;
<span class="keyword">public</span> game_reset() {
set_int(ai_score, 0);
set_int(player_score, 0);
set_text(PART:<span class="stringliteral">"score1"</span>, <span class="stringliteral">"0"</span>);
set_text(PART:<span class="stringliteral">"score2"</span>, <span class="stringliteral">"0"</span>);
game_init();
}
<span class="keyword">public</span> game_init() {
set_float(ballspeedx, 0.0);
set_float(ballspeedy, 0.0);
set_float(ballx, 100);
set_float(bally, 100);
}
<span class="keyword">public</span> start_game() {
set_float(ballspeedx, BALL_SPEED);
set_float(ballspeedy, BALL_SPEED * randf());
}
<span class="keyword">public</span> player_wins() {
<span class="keyword">new</span> buf[16]
set_int(player_score, get_int(player_score) + 1);
snprintf(buf, <span class="keyword">sizeof</span>(buf), <span class="stringliteral">"%d"</span>, get_int(player_score));
set_text(PART:<span class="stringliteral">"score1"</span>, buf);
game_init();
}
<span class="keyword">public</span> ai_wins() {
<span class="keyword">new</span> buf[16]
set_int(ai_score, get_int(ai_score) + 1);
snprintf(buf, <span class="keyword">sizeof</span>(buf), <span class="stringliteral">"%d"</span>, get_int(ai_score));
set_text(PART:<span class="stringliteral">"score2"</span>, buf);
game_init();
}
<span class="keyword">public</span> game_loop(count) {
count++;
<span class="comment">/* get field geometry */</span>
<span class="keyword">new</span> fx, fy, fw, fh;
get_geometry(PART:<span class="stringliteral">"bg"</span>, fx, fy, fw, fh);
<span class="comment">/* get mouse coords */</span>
<span class="keyword">new</span> mx, my;
get_mouse(mx, my);
<span class="comment">/* get the ball info */</span>
<span class="keyword">new</span> Float:bx = get_float(ballx);
<span class="keyword">new</span> Float:by = get_float(bally);
<span class="keyword">new</span> Float:speedx = get_float(ballspeedx);
<span class="keyword">new</span> Float:speedy = get_float(ballspeedy);
<span class="comment">/* move the player pad */</span>
<span class="keyword">new</span> pady = my - PAD_SIZE / 2;
<span class="keywordflow">if</span> (pady < 0) pady = 0;
<span class="keywordflow">else</span> <span class="keywordflow">if</span> (pady + PAD_SIZE > fh) pady = fh - PAD_SIZE;
custom_state(PART:<span class="stringliteral">"pad1"</span>, <span class="stringliteral">"default"</span>, 0.0);
set_state_val(PART:<span class="stringliteral">"pad1"</span>, STATE_REL1_OFFSET, 20, pady);
set_state(PART:<span class="stringliteral">"pad1"</span>, <span class="stringliteral">"custom"</span>, 0.0);
<span class="comment">/* move the AI pad */</span>
<span class="keyword">new</span> pad2y = round(by) - PAD_SIZE / 2 - BALL_SIZE / 2;
<span class="keywordflow">if</span> (pad2y < 0) pad2y = 0;
<span class="keywordflow">else</span> <span class="keywordflow">if</span> (pad2y + PAD_SIZE > fh) pad2y = fh - PAD_SIZE;
custom_state(PART:<span class="stringliteral">"pad2"</span>, <span class="stringliteral">"default"</span>, 0.0);
set_state_val(PART:<span class="stringliteral">"pad2"</span>, STATE_REL1_OFFSET, 20, pad2y);
set_state(PART:<span class="stringliteral">"pad2"</span>, <span class="stringliteral">"custom"</span>, 0.0);
<span class="comment">/* calc new ball position */</span>
bx += speedx;
by += speedy;
<span class="comment">/* check walls collision */</span>
<span class="keywordflow">if</span> (by < 0)
{
speedy = -speedy;
by = 0;
}
<span class="keywordflow">else</span> <span class="keywordflow">if</span> (by + BALL_SIZE > fh)
{
speedy = -speedy;
by = fh - BALL_SIZE - 1;
}
<span class="comment">/* check player pad collision */</span>
<span class="keywordflow">if</span> ((speedx < 0) &&
(bx < PAD_DISTANCE + 10) && (bx > 0) &&
(by + BALL_SIZE > pady) && (by < pady + PAD_SIZE))
{
<span class="keyword">new</span> Float:dy = by - pady - PAD_SIZE / 2;
speedy += dy / 10;
speedx = -speedx + BALL_SPEEDUP;
}
<span class="comment">/* check AI pad collision */</span>
<span class="keywordflow">else</span> <span class="keywordflow">if</span> ((bx + BALL_SIZE > fw - PAD_DISTANCE - 10) &&
(bx + BALL_SIZE < fw) &&
(by + BALL_SIZE > pad2y) && (by < pad2y + PAD_SIZE))
{
<span class="keyword">new</span> Float:dy = by - pad2y - PAD_SIZE / 2;
speedy += dy / 10;
speedx = -speedx - BALL_SPEEDUP;
}
<span class="comment">/* apply the new ball position */</span>
custom_state(PART:<span class="stringliteral">"ball"</span>, <span class="stringliteral">"default"</span>, 0.0);
set_state_val(PART:<span class="stringliteral">"ball"</span>, STATE_REL1_OFFSET, round(bx), round(by));
set_state(PART:<span class="stringliteral">"ball"</span>, <span class="stringliteral">"custom"</span>, 0.0);
<span class="comment">/* update global vars */</span>
set_float(ballx, bx);
set_float(bally, by);
set_float(ballspeedx, speedx);
set_float(ballspeedy, speedy);
<span class="comment">/* AI score a point */</span>
<span class="keywordflow">if</span> (bx < 0) ai_wins();
<span class="comment">/* player score a point */</span>
<span class="keywordflow">if</span> (bx + BALL_SIZE > fw) player_wins();
<span class="comment">/* show debug info (if debug enabled) */</span>
DBG(<span class="stringliteral">"loop:%d [speed %f %f] [mouse: %d %d] [ball: %f %f]"</span>,
count, speedx, speedy, mx, my, bx, by)
<span class="comment">/* recall the loop in n seconds */</span>
timer(1.0 / FPS, <span class="stringliteral">"game_loop"</span>, count);
}
}
parts {
part { <a class="code" href="edje__data_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>: <span class="stringliteral">"bg"</span>;
<a name="a1"></a><a class="code" href="edje__data_8c.html#a0dae2edc8bfd2bedabfa38415c35f3ec">type</a>: RECT;
description { state: <span class="stringliteral">"default"</span> 0.0;
color: COLOR_BG;
}
}
part { <a class="code" href="edje__data_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>: <span class="stringliteral">"net"</span>;
<a class="code" href="edje__data_8c.html#a0dae2edc8bfd2bedabfa38415c35f3ec">type</a>: RECT;
description { state: <span class="stringliteral">"default"</span> 0.0;
color: COLOR_FG;
max: 10 9999;
}
}
part { <a class="code" href="edje__data_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>: <span class="stringliteral">"score1"</span>;
<a class="code" href="edje__data_8c.html#a0dae2edc8bfd2bedabfa38415c35f3ec">type</a>: TEXT;
description { state: <span class="stringliteral">"default"</span> 0.0;
color: COLOR_FG;
rel2.relative: 0.5 0.5;
rel2.offset: -20 0;
text {
text: <span class="stringliteral">"0"</span>;
font: <span class="stringliteral">"Sans"</span>;
size: 50;
align: 1.0 0.0;
}
}
}
part { <a class="code" href="edje__data_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>: <span class="stringliteral">"score2"</span>;
<a class="code" href="edje__data_8c.html#a0dae2edc8bfd2bedabfa38415c35f3ec">type</a>: TEXT;
description { state: <span class="stringliteral">"default"</span> 0.0;
color: COLOR_FG;
rel1.relative: 0.5 0.0;
rel1.offset: 20 0;
text {
text: <span class="stringliteral">"0"</span>;
font: <span class="stringliteral">"Sans"</span>;
size: 50;
align: 0.0 0.0;
}
}
}
part { <a class="code" href="edje__data_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>: <span class="stringliteral">"pad1"</span>;
<a class="code" href="edje__data_8c.html#a0dae2edc8bfd2bedabfa38415c35f3ec">type</a>: RECT;
description { state: <span class="stringliteral">"default"</span> 0.0;
color: COLOR_FG;
max: 10 PAD_SIZE;
fixed: 1 1;
align: 0.0 0.0;
rel1.offset: PAD_DISTANCE 0;
}
}
part { <a class="code" href="edje__data_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>: <span class="stringliteral">"pad2"</span>;
<a class="code" href="edje__data_8c.html#a0dae2edc8bfd2bedabfa38415c35f3ec">type</a>: RECT;
description { state: <span class="stringliteral">"default"</span> 0.0;
color: COLOR_FG;
max: 10 PAD_SIZE;
fixed: 1 1;
align: 1.0 0.0;
rel2.offset: -PAD_DISTANCE 0;
}
}
part { <a class="code" href="edje__data_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>: <span class="stringliteral">"ball"</span>;
<a class="code" href="edje__data_8c.html#a0dae2edc8bfd2bedabfa38415c35f3ec">type</a>: RECT;
description { state: <span class="stringliteral">"default"</span> 0.0;
color: COLOR_FG;
max: BALL_SIZE BALL_SIZE;
fixed: 1 1;
align: 0.0 0.0;
rel1.offset: 100 100;
}
}
<span class="preprocessor"> #if DEBUG_ENABLE</span>
<span class="preprocessor"></span> part { <a class="code" href="edje__data_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>: <span class="stringliteral">"dbg"</span>;
<a class="code" href="edje__data_8c.html#a0dae2edc8bfd2bedabfa38415c35f3ec">type</a>: TEXT;
description { state: <span class="stringliteral">"default"</span> 0.0;
color: 255 255 255 200;
text {
font: <span class="stringliteral">"Sans"</span>;
size: 12;
align: 1.0 1.0;
}
}
}
<span class="preprocessor"> #endif</span>
<span class="preprocessor"></span> }
programs {
<span class="comment">/* on load: reset the game and start the game loop */</span>
program {
signal: <span class="stringliteral">"load"</span>;
source: <span class="stringliteral">""</span>;
script {
game_reset();
timer(0.1 , <span class="stringliteral">"game_loop"</span>, 0);
}
}
<span class="comment">/* mouse left click: start the game, if not yet started */</span>
program {
signal: <span class="stringliteral">"mouse,down,1"</span>;
source: <span class="stringliteral">"bg"</span>;
script {
<span class="keywordflow">if</span> (get_float(ballspeedx) == 0.0)
start_game();
}
}
<span class="comment">/* mouse right click: restart the game*/</span>
program {
signal: <span class="stringliteral">"mouse,down,3"</span>;
source: <span class="stringliteral">"bg"</span>;
script {
game_reset();
}
}
}
}
}
</pre></div> </div>
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<td class="generated">Docs generated Tue Feb 8 2011 17:28:42</td>
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