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Code off

Name: Anonymous 2009-07-28 13:59

Welcome to the first annual /prog/ Code off !

The language will be C.

Compeptitors include (in no particular order):

Mr. Ribs
Xarn
FV
Anonymous
W. T. Snacks

Rumor has it, that there may be a special guest appearance from either The Sussman or
Leah Culver.

What's the point of this, you ask?

It's to determine who is an EXPERT PROGRAMMER.

Marking criteria:

Optimization
Elegance

Bonus marks:
indentation

Good luck!

Name: Anonymous 2009-07-29 18:55

>>119
I happen to be an expert at this.
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <windows.h>
#include <string.h>

//http://dis.4chan.org/read/prog/1248803966/100

HANDLE *hConsole;

void fill_frame(char *frame,char c){
    int x,y;
    for(y=0;y<20;++y){
        for(x=0;x<50;++x){
            frame[y*51+x] = c;
        }
        frame[y*51+50] = '\n';
    }
    frame[51*20] = 0;
}

///

inline int out_of_bounds(short x,short y){
    return x<0 || x>50 || y<0 || y>20;  
}

void add_square(short *squares){
    int i;
    for(i=0;i<1024;i+=4){
        if(out_of_bounds(squares[i],squares[i+1])){
            squares[i]   = 25;//x
            squares[i+1] = 10;//y
            squares[i+2] = 1;//x speed
            squares[i+3] = 1;//y speed
            break;
        }
    }
}

void move_squares(short *squares){
    short i,*x,*y;
    for(i=0;i<1024;i+=4){
        x = &squares[i];
        y = &squares[i+1];
        if(!out_of_bounds(*x,*y)){
            if(*x==0 || *x==50-1) squares[i+2]*=-1;
            if(*y==0 || *y==20-1) squares[i+3]*=-1;
            *x += squares[i+2];
            *y += squares[i+3];
        }
    }
}

///

void gotoxy(short x,short y){
    COORD coord = {x,y};
    SetConsoleCursorPosition(hConsole,coord);
}

void print_frame(char *frame){
    gotoxy(0,0);
    printf(frame);
    gotoxy(0,0);
}

void clear_scrn(){
    char frame[51*20];
    fill_frame(frame,' ');
    print_frame(frame);
}

void render_frame(char *frame,short *squares){
    short i,x,y;
    fill_frame(frame,' ');
    for(i=0;i<1024;i+=4){
        x = squares[i];
        y = squares[i+1];
        if(!out_of_bounds(x,y)){
            frame[y*51+x] = '#';
        }
    }
}

///

int main(int argc,char *argv[]){
    char frame[51*20];
    short squares[1024];
    memset(squares,-1,sizeof(short)*1024);
    hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
   
    clear_scrn();
    for(;;){
        while(_kbhit()>0){
            if(_getch()==EOF) exit(0);
            else add_square(squares);
        }
        move_squares(squares);
       
        fill_frame(frame,' ');
        render_frame(frame,squares);
        print_frame(frame);
        Sleep(1000);//32
    }
    return 0;
}

Name: Anonymous 2009-07-29 19:00

This thread has made me realize that I am not an [b][u]EXPERT PROGRAMMER[/b][/b]

Name: Anonymous 2009-07-29 19:29

>>121
Oh shit son! Nice!

Name: Anonymous 2009-07-29 19:57

>>100
I don't see any language restriction on this one, soo...

-module(progoff2).
-export([start/0]).

-define(SQUARE_SIZE, 50).
-define(WINDOW_WIDTH, 500).
-define(WINDOW_HEIGHT, 500).
-define(UPDATE_INTERVAL, 50).

start() ->
    G = gs:start(),
    gs:window(win, G, [{width, ?WINDOW_WIDTH},
        {height, ?WINDOW_HEIGHT}, {map, true}]),
    gs:canvas(canv, win, [{width, ?WINDOW_WIDTH},
        {height, ?WINDOW_HEIGHT}, {buttonpress, true}]),
    self() ! update,
    loop([]).

loop(Squares) ->
    receive
        update ->
            increment_squares(Squares),
            erlang:send_after(?UPDATE_INTERVAL, self(), update),
            loop(Squares);
        {gs, canv, buttonpress, _, [1,X,Y|_]} ->
            NewSquare = gs:rectangle(canv, [
                {coords, [{X, Y}, {X+?SQUARE_SIZE, Y+?SQUARE_SIZE}]},
                {fill, random_color()},
                {data, random_velocity()}
            ]),
            loop([NewSquare|Squares]);
        {gs, _, destroy, _, _} ->
            erlang:halt();
        {gs, _, Type, _, _} ->
            io:format("Got ~w~n", [Type]),
            loop(Squares)
    end.

increment_squares([Square|Rest]) ->
    [{Left, Top}, {Right, Bottom}] = gs:read(Square, coords),
    {XVel, YVel} = gs:read(Square, data),
    if (Left =< 0) and (XVel =< 0) or
        (Right >= ?WINDOW_WIDTH) and (XVel >= 0) or
        (Top =< 0) and (YVel =< 0) or
        (Bottom >= ?WINDOW_HEIGHT) and (YVel >= 0) ->
            gs:config(Square, {data, random_velocity()});
        true -> false
    end,
    gs:config(Square, {move, gs:read(Square, data)}),
    increment_squares(Rest);
increment_squares(_) -> false.

random_velocity() ->
    {5*(random:uniform()-0.5), 5*(random:uniform()-0.5)}.

random_color() ->
    lists:nth(random:uniform(6), [red,yellow,green,blue,red,orange]).

Name: Xarn !Rmk.XarnE2!xGIX62dlJesBTK+ 2009-07-29 19:58

/* gcc file.c `allegro-config --libs` */

#include <stdlib.h>
#include <time.h>
#include <allegro.h>

#define WIDTH 1280
#define HEIGHT 800

#define SQUARE 10

#define FOREGROUND 255, 255, 255
#define BACKGROUND 0, 0, 0

typedef struct {
    int x;
    int y;
    int x_s;
    int y_s;
} square;

int main()
{
    int num_squares = 0, back, i;
    square *s = NULL;
    BITMAP *pad, *square;

    allegro_init();
    install_keyboard();
    install_mouse();
    install_timer();
   
    if (set_gfx_mode(GFX_AUTODETECT, WIDTH, HEIGHT, 0, 0) != 0)
        return 1;


    srand((unsigned int)time(NULL));

    pad = create_bitmap(WIDTH, HEIGHT);
    back = makecol(BACKGROUND);

    square = create_bitmap(SQUARE, SQUARE);
    clear_to_color(square, makecol(FOREGROUND));

    while (!keypressed()) {
        if (mouse_b & 1) {
            if (num_squares % 256 == 0)
                s = realloc(s, sizeof(square) * (num_squares + 256));

            s[num_squares].x = mouse_x;
            s[num_squares].y = mouse_y;
            s[num_squares].x_s = rand() % 64 - 50;
            s[num_squares].y_s = rand() % 64 - 50;

            ++num_squares;
        }

        clear_to_color(pad, back);

        for (i = 0; i < num_squares; ++i) {
            s[i].x += s[i].x_s;
            s[i].y += s[i].y_s;

            if (s[i].x <= 0) {
                s[i].x = 0;
                s[i].x_s *= -1;
            }
            if (s[i].x >= WIDTH - SQUARE) {
                s[i].x = WIDTH - SQUARE;
                s[i].x_s *= -1;
            }
            if (s[i].y <= 0) {
                s[i].y = 0;
                s[i].y_s *= -1;
            }
            if (s[i].y >= HEIGHT - SQUARE) {
                s[i].y = HEIGHT - SQUARE;
                s[i].y_s *= -1;
            }

            draw_sprite(pad, square, s[i].x, s[i].y);
        }

        show_mouse(pad);
        blit(pad, screen, 0, 0, 0, 0, WIDTH, HEIGHT);
        rest(30);

    }

    free(s);

    return 0;
   
} END_OF_MAIN()

Name: Anonymous 2009-07-29 20:05

I happen to be an EXPERT at this.
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import java.applet.*;
import java.util.*;
public class a extends Applet implements Runnable, MouseListener{
    int w,h;   
    public static final int BOX_SIZE=10,BOX_SPEED=10;
    ArrayList<double[]> boxes=new ArrayList<double[]>();
    BufferedImage buf; //for double buffering
    public void init(){
        w=getWidth();
        h=getHeight();       
        buf=new BufferedImage(w,h,BufferedImage.TYPE_3BYTE_BGR);
        addMouseListener(this);
        new Thread(this).start();       
    }
    public void paint(Graphics g){
        g.setColor(Color.black);
        g.fillRect(0, 0, w, h);
        g.setColor(Color.white);
        for(double[] box:boxes){
            box[0]+=box[2];
            box[1]+=box[3];
            if(box[0]<0||box[0]>w-BOX_SIZE) box[2]*=-1;
            if(box[1]<0||box[1]>h-BOX_SIZE) box[3]*=-1;
            g.fillRect((int)box[0], (int)box[1], BOX_SIZE, BOX_SIZE);
        }       
    }   
    public void run(){
        while(true){
            try{
                paint(buf.getGraphics());
                getGraphics().drawImage(buf, 0, 0, null);
                Thread.sleep(10);
            }catch(Exception e){}
        }
    }
    public void mouseClicked(MouseEvent e) {
        double[] box=new double[4];
        box[0]=e.getX();
        box[1]=e.getY();
        box[2]=(Math.random()-.5)*BOX_SPEED;
        box[3]=(Math.random()-.5)*BOX_SPEED;
        boxes.add(box);
    }
    public void mouseEntered(MouseEvent e){}public void mouseExited(MouseEvent e){}   
    public void mousePressed(MouseEvent e){}public void mouseReleased(MouseEvent e){}
}

Name: Anonymous 2009-07-29 20:25

>>124
The restriction specified in >>1 still applies.

Name: Anonymous 2009-07-29 21:42

>>125
Nicely done Xarn

Name: Anonymous 2009-07-29 21:45

>>127
Lets fuck that restriction. Everyone can program in whatever the fuck they want.

Name: Anonymous 2009-07-29 22:03

>>129
Excellent, I'll post my brainfuck solution in about a month

Name: Anonymous 2009-07-29 22:42

>>121
VERSION 0.0.1 RELEASED
4a5
#include <conio.h>
9c10
< HANDLE *hConsole;
---
HANDLE hConsole;
105c106
<         Sleep(1000);//32
---
        Sleep(32);

Name: Anonymous 2009-07-29 22:42

>>130
Brainfuck really isn't that hard to code in. The problem with wanting to draw stuff on the screen is that there's no way to interface with an OS.

Name: !Double-Shot-Of-Java 2009-07-29 22:56

Here comes your second course of delectable, enterprise quality deliciousness! I'll skip the source and let you dive right into the applet:

http://www.geocities.com/valkarse/bouncy.html

Bon appetit!

Name: Anonymous 2009-07-29 23:00

>>133
Not bad. You should show us the source though. I think this round is for any language.

Name: Anonymous 2009-07-29 23:02

>>133
I cant stop staring at it lol

Name: Anonymous 2009-07-29 23:04

>>133
You have a bug in the display, it only shows the first two numbers of the sprite amount i.e. 209 sprites would show 20

Name: !Double-Shot-Of-Java 2009-07-29 23:12

>>136
Hmm, I'll try to fix it, but the bug doesn't happen on my screen. What browser/resolution are you running?

Name: Anonymous 2009-07-29 23:20

>>136,137
Doesn't happen for me, either.
1280x1024

Name: !Double-Shot-Of-Java 2009-07-29 23:22

http://www.geocities.com/valkarse/bouncy2.html
Fixed. I just gave the display some more space. You might have to clear your cache and reload your browser to view the new version.

Name: Anonymous 2009-07-29 23:29

>>139
I like the uploading of submissions to websites! This should occur more often.

Name: Anonymous 2009-07-29 23:29

>>139 That solved it ;)
For what it's worth, Firefox 3.5.1 1024x768

Name: Anonymous 2009-07-29 23:45

>>139
Is his applet gonna hax my anus?

Name: Anonymous 2009-07-29 23:47

>>142
Yeah I'm a little afraid too... can someone virus scan it first?

Name: !Double-Shot-Of-Java 2009-07-29 23:50

>>142
>>143
It's an APPLET! You guys are noobs. (　≖‿≖)

Name: Anonymous 2009-07-30 0:28

>>144

I think it's Javascript.  You've infected us all!

Name: Anonymous 2009-07-30 0:37

>>143
Perhaps you should switch to a real operating system.

Name: Anonymous 2009-07-30 1:49

Now which one of you guys is the sussman?

Name: Anonymous 2009-07-30 1:55

>>147
Xarn is.

Name: Anonymous 2009-07-30 4:34

OP here,
i declare >>56 the winner because all good programmers know not to try and reinvent the wheel.

Name: Anonymous 2009-07-30 4:36

>>149
STFU you are not the OP, numbnuts.

Name: Anonymous 2009-07-30 5:24

<html>
    <head>
        <style> * { margin: 0; padding: 0; } </style>
        <script type="text/javascript">
            function load() {
                var fps = 60;
                var boxWidth = 20;
                var boxHeight = 20;
                var speed = 750; //pixels per second
               
                var canvas = document.getElementById("canvas");
                var width = Math.max(document.documentElement["clientWidth"], document.body["scrollWidth"],
                                     document.documentElement["scrollWidth"],document.body["offsetWidth"],document.documentElement["offsetWidth"]);
                var height = Math.max(document.documentElement["clientHeight"], document.body["scrollHeight"],
                                      document.documentElement["scrollHeight"],document.body["offsetHeight"],document.documentElement["offsetHeight"]);
                canvas.width = width;
                canvas.height = height;
                var c = canvas.getContext("2d");
                var tspeed = speed / fps;
                var boxes = Array();
                setInterval(function() { draw(); }, 1000/fps);
                canvas.addEventListener("click", function(e) {
                    var direction = Math.random() * 2 * Math.PI;
                    var dx = tspeed * Math.cos(direction);
                    var dy = tspeed * Math.sin(direction);
                    boxes.push(new Box(e.pageX, e.pageY, dx, dy));
                }, true);
                function draw() {
                    c.fillStyle = "White";
                    c.fillRect(0, 0, width, height);
                    c.fillStyle = "rgb("+Math.floor(Math.random()*256)+","+Math.floor(Math.random()*256)+","+Math.floor(Math.random()*256)+")";
                    for(var i=0; i<boxes.length; i++) boxes[i].move();
                }
                var Box = function(x, y, dx, dy) {
                    this.x = x;
                    this.y = y;
                    this.dx = dx;
                    this.dy = dy;
                    this.move = function() {
                        if((x+boxWidth >= width && dx > 0) || (x < 0 && dx < 0)) dx = -dx;
                        if((y+boxHeight >= height && dy > 0) || (y < 0 && dy < 0)) dy = -dy;
                        x+=dx;
                        y+=dy;
                        c.fillRect(x, y, boxWidth, boxHeight);
                    }
                }
            }
        </script>
    </head>
    <body onload="load();">
        <canvas id="canvas"></canvas>
    </body>
</html>

Name: Anonymous 2009-07-30 6:04

>>150
The jerk store called; they ran out of you!

Name: Anonymous 2009-07-30 6:57

>>152
#Sudo suck my dick, jerkface!

Name: Anonymous 2009-07-30 7:37

>>152
In Soviet Russia, you run out of the jerk store!

Name: =+=*=F=R=O=Z=E=N==V=O=I=D=*=+= !frozEn/KIg 2009-07-30 7:50

>>154 In Soviet Slashdot such dumb jokes gain +2 Insightful.
 (I lost interest when it started parroting two-day old reddit stories and ramped up the slashvertisements volume).



_______________________________________________
http://xs135.xs.to/xs135/09042/av922.jpg
Velox Et Astrum gamedev forum: http://etastrum.phpbb3now.com
There's nothing in the world so demoralizing as money.

Name: Anonymous 2009-07-30 8:10

>>154
Goddamn, I lol'd.

Name: Anonymous 2009-07-30 8:38

Okay, this should work.  The squares don't "appear" where you click because I couldn't solve the equation ;_;  Add -lglut and -lGL when linking.  Compilation might be tricky.

#define GL_GLEXT_PROTOTYPES
#include <GL/gl.h>
#include <GL/glut.h>
#include <stdlib.h>
#include <string.h>

#define MAX_SQUARE 1024
static unsigned int square_count;
static struct {
    GLfloat data[16];
} square_data[MAX_SQUARE];

static GLint uniformTime;

static void
display()
{
    GLfloat t = glutGet(GLUT_ELAPSED_TIME) * 0.001f;
    glUniform1f(uniformTime, t);
    glClear(GL_COLOR_BUFFER_BIT);
    glVertexPointer(4, GL_FLOAT, 0, square_data);
    glDrawArrays(GL_QUADS, 0, square_count * 4);
    glutSwapBuffers();
}

static void
display_callback(int value)
{
    display();
    glutTimerFunc(16, display_callback, 0);
}

static void
square_add(int x, int y, int vx, int vy)
{
    if (square_count >= MAX_SQUARE)
        return;

    GLfloat data[16] = { x - 8, y - 8, vx, vy, x + 8, y - 8, vx, vy, x + 8, y + 8, vx, vy, x - 8, y + 8, vx, vy };
    memcpy(square_data[square_count++].data, data, sizeof(GLfloat) * 16);
}

static void
mouse(int button, int state, int x, int y)
{
    if (button == GLUT_LEFT_BUTTON && state == GLUT_DOWN) {
        square_add(x, y, (rand() % 400) - 200, (rand() % 400) - 200);
    } else if (button == GLUT_RIGHT_BUTTON && state == GLUT_UP) {
        unsigned int i;
        for (i = 0; i < MAX_SQUARE; ++i) {
            square_add(rand() % 640, rand() % 480, (rand() % 400) - 200, (rand() % 400) - 200);
        }
    }
}

static const char* vert =
    "#version 120\n"
    "const mat4 orthoMatrix = "
    "mat4(2.0 / 640.0, 0.0,          0.0, 0.0,"
         "0.0,         2.0 / -480.0, 0.0, 0.0,"
         "0.0,         0.0,         -1.0, 0.0,"
        "-1.0,         1.0,         -0.0, 1.0);\n"
    "uniform float t;\n"
    "const vec2 windowSize = vec2(640.0f, 480.0f);\n"
    "void main() {\n"
        "vec2 dist = gl_Vertex.xy + gl_Vertex.zw * t;\n"
        "ivec2 signs = ivec2(mod(dist / windowSize, 2));\n"
        "gl_Position = orthoMatrix * vec4((2 * signs - 1) * ((signs * windowSize) - mod(dist, windowSize)), 0.0f, 1.0f);\n"
    "}\n";

static const char* frag =
    "#version 120\n"
    "void main() {\n"
        "gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0);\n"
    "}\n";

int
main(int argc, char* argv[])
{
    GLuint pr;
    GLuint sh;

    glutInit(&argc, argv);
    glutInitWindowSize(640, 480);
    glutInitDisplayMode(0);

    glutCreateWindow("/prog/");

    pr = glCreateProgram();

    sh = glCreateShader(GL_VERTEX_SHADER);
    glShaderSource(sh, 1, &vert, NULL);
    glCompileShader(sh);
    glAttachShader(pr, sh);

    sh = glCreateShader(GL_FRAGMENT_SHADER);
    glShaderSource(sh, 1, &frag, NULL);
    glCompileShader(sh);
    glAttachShader(pr, sh);

    glLinkProgram(pr);
    glUseProgram(pr);
    uniformTime = glGetUniformLocation(pr, "t");

    glEnableClientState(GL_VERTEX_ARRAY);

    glutDisplayFunc(display);
    glutMouseFunc(mouse);

    glutTimerFunc(16, display_callback, 0);

    glutMainLoop();

    return 0;
}

Name: Anonymous 2009-07-30 9:17

>>157
Oops, forgot I was going to use a VBO.  Also enabled double buffering to avoid flickering.
9,11d8
< static struct {
<     GLfloat data[16];
< } square_data[MAX_SQUARE];
21c18
<     glVertexPointer(4, GL_FLOAT, 0, square_data);
---
    glVertexPointer(4, GL_FLOAT, 0, NULL);
40c37
<     memcpy(square_data[square_count++].data, data, sizeof(GLfloat) * 16);
---
    glBufferSubData(GL_ARRAY_BUFFER, square_count++ * sizeof(GLfloat) * 16, sizeof(GLfloat) * 16, data);
81a79
    GLuint vbo;
85c83
<     glutInitDisplayMode(0);
---
    glutInitDisplayMode(GLUT_DOUBLE);
104a103,106
    glGenBuffers(1, &vbo);
    glBindBuffer(GL_ARRAY_BUFFER, vbo);
    glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * 16 * MAX_SQUARE, NULL, GL_STATIC_DRAW);

Name: Anonymous 2009-07-30 9:35

>>158
Protip: Use diff -u.

Name: Anonymous 2009-07-30 10:17

>>159
But then I'll have to come up with a file name ;_;
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