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Add breakout design and fix getopt on macOS
New self-playing breakout demo with 3 rows of bricks, bouncing ball, and AI paddle. Colored mode with CGA palette via -C flag. Also fix getopt parsing for clock and breakout on macOS by including d: in design optstrings.
1 parent 027dd4d commit 74488a0

4 files changed

Lines changed: 220 additions & 2 deletions

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‎pixelwall/Makefile‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -24,7 +24,8 @@ OBJECTS = \
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design_life.o \
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design_cm5.o \
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design_text_arcade.o \
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design_clock.o
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design_clock.o \
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design_breakout.o
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.PHONY: all
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all: $(PROGRAM)

‎pixelwall/design_breakout.c‎

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@@ -0,0 +1,215 @@
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/*
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DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
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Version 2, December 2004
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Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
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Everyone is permitted to copy and distribute verbatim or modified
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copies of this license document, and changing it is allowed as long
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as the name is changed.
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DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
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TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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0. You just DO WHAT THE FUCK YOU WANT TO.
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*/
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#include "pixelwall.h"
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#define BRICK_ROWS 3
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#define BRICK_COLS 11
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#define PADDLE_ROW 14
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#define PADDLE_HALF 2
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typedef struct {
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Color color;
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bool colorful;
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Color row_colors[BRICK_ROWS];
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Color ball_color;
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Color paddle_color;
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Pos ball;
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Pos direction;
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int paddle_x;
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bool bricks[BRICK_ROWS][BRICK_COLS];
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int bricks_remaining;
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} BreakoutData;
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static void ResetBricks(BreakoutData *bd) {
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bd->bricks_remaining = BRICK_ROWS * BRICK_COLS;
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for (int r = 0; r < BRICK_ROWS; r++)
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for (int b = 0; b < BRICK_COLS; b++)
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bd->bricks[r][b] = true;
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}
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static void ResetBall(BreakoutData *bd) {
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bd->ball = (Pos){11, 8};
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bd->direction = (Pos){(rand() % 2) ? 1 : -1, -1};
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}
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// Get the left column of brick b (no gaps, all rows identical)
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static int BrickCol(int r, int b) {
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(void)r;
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return b * 2; // 0,2,4,6,8,10,12,14,16,18,20
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}
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// Check if column col hits a brick in row r, return brick index or -1
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static int ColToBrick(int r, int col) {
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for (int b = 0; b < BRICK_COLS; b++) {
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int left = BrickCol(r, b);
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if (col == left || col == left + 1)
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return b;
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}
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return -1;
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}
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static void PrintHelp() {
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printf(" -C Enable colored mode\n");
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printf(" -R <color> Brick row 1 color (default: 255,85,85)\n");
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printf(" -G <color> Brick row 2 color (default: 255,255,85)\n");
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printf(" -K <color> Brick row 3 color (default: 85,255,255)\n");
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printf(" -L <color> Ball color (default: 255,255,85)\n");
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printf(" -P <color> Paddle color (default: 255,255,255)\n");
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}
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static void ParseOptions(BreakoutData *bd, int argc, char *argv[]) {
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int opt;
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optind = 1;
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while ((opt = getopt(argc, argv, ":d:CR:G:K:L:P:")) != -1) {
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switch (opt) {
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case 'C': bd->colorful = true; break;
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case 'R': bd->row_colors[0] = ParseColor(optarg); break;
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case 'G': bd->row_colors[1] = ParseColor(optarg); break;
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case 'K': bd->row_colors[2] = ParseColor(optarg); break;
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case 'L': bd->ball_color = ParseColor(optarg); break;
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case 'P': bd->paddle_color = ParseColor(optarg); break;
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}
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}
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}
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static void *Create(Grid *grid, int argc, char *argv[]) {
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BreakoutData *bd = malloc(sizeof(BreakoutData));
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if (!bd) return NULL;
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bd->color = GREEN;
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bd->colorful = false;
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// CGA palette colors (used when -c is enabled)
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bd->row_colors[0] = (Color){255, 85, 85, 255}; // CGA Light Red
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bd->row_colors[1] = (Color){255, 255, 85, 255}; // CGA Yellow
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bd->row_colors[2] = (Color){85, 255, 255, 255}; // CGA Light Cyan
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bd->ball_color = (Color){255, 255, 85, 255}; // CGA Yellow
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bd->paddle_color = (Color){255, 255, 255, 255}; // White
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ParseOptions(bd, argc, argv);
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ResetBricks(bd);
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srand(time(NULL));
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ResetBall(bd);
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bd->paddle_x = 11;
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return bd;
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}
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static void UpdateFrame(Grid *grid, void *data) {
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BreakoutData *bd = (BreakoutData *)data;
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Color bg = grid->conf.backgroundColor;
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GridFillColor(grid, bg);
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// Move ball
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int nx = bd->ball.x + bd->direction.x;
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int ny = bd->ball.y + bd->direction.y;
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// Wall bounce left/right
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if (nx < 0 || nx > 21) {
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bd->direction.x *= -1;
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nx = bd->ball.x + bd->direction.x;
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}
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// Wall bounce top
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if (ny < 0) {
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bd->direction.y *= -1;
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ny = bd->ball.y + bd->direction.y;
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}
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// Brick collision: check if new position hits a brick
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if (ny >= 0 && ny < BRICK_ROWS) {
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int b = ColToBrick(ny, nx);
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if (b >= 0 && bd->bricks[ny][b]) {
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bd->bricks[ny][b] = false;
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bd->bricks_remaining--;
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bd->direction.y *= -1;
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ny = bd->ball.y + bd->direction.y;
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}
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}
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// Paddle collision
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if (ny == PADDLE_ROW) {
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if (nx >= bd->paddle_x - PADDLE_HALF && nx <= bd->paddle_x + PADDLE_HALF) {
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bd->direction.y = -1;
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ny = bd->ball.y + bd->direction.y;
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}
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}
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// Ball lost below paddle
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if (ny > PADDLE_ROW) {
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ResetBall(bd);
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nx = bd->ball.x;
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ny = bd->ball.y;
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} else {
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bd->ball.x = nx;
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bd->ball.y = ny;
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}
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// Safety clamp
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if (bd->ball.x < 0) bd->ball.x = 0;
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if (bd->ball.x > 21) bd->ball.x = 21;
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if (bd->ball.y < 0) bd->ball.y = 0;
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if (bd->ball.y > PADDLE_ROW) bd->ball.y = PADDLE_ROW;
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// AI paddle: move toward ball with slight randomness
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int jitter = (rand() % 3) - 1;
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int target = bd->ball.x + jitter;
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if (bd->paddle_x < target) bd->paddle_x++;
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if (bd->paddle_x > target) bd->paddle_x--;
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if (bd->paddle_x < PADDLE_HALF) bd->paddle_x = PADDLE_HALF;
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if (bd->paddle_x > 21 - PADDLE_HALF) bd->paddle_x = 21 - PADDLE_HALF;
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// Draw bricks
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for (int r = 0; r < BRICK_ROWS; r++) {
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Color bc = bd->colorful ? bd->row_colors[r] : bd->color;
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for (int b = 0; b < BRICK_COLS; b++) {
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if (bd->bricks[r][b]) {
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int left = BrickCol(r, b);
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GridSetColor(grid, (Pos){left, r}, bc);
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GridSetColor(grid, (Pos){left + 1, r}, bc);
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}
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}
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}
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// Draw paddle
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Color pc = bd->colorful ? bd->paddle_color : bd->color;
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for (int i = -PADDLE_HALF; i <= PADDLE_HALF; i++) {
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GridSetColor(grid, (Pos){bd->paddle_x + i, PADDLE_ROW}, pc);
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}
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// Draw ball
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Color blc = bd->colorful ? bd->ball_color : bd->color;
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GridSetColor(grid, (Pos){bd->ball.x, bd->ball.y}, blc);
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// Reset if all bricks destroyed
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if (bd->bricks_remaining == 0) {
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ResetBricks(bd);
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}
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}
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static void Destroy(void *data) {
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free(data);
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}
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Design breakoutDesign = {
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.name = "breakout",
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.PrintHelp = PrintHelp,
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.Create = Create,
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.UpdateFrame = UpdateFrame,
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.Destroy = Destroy,
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};

‎pixelwall/design_clock.c‎

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Original file line numberDiff line numberDiff line change
@@ -57,7 +57,7 @@ static ClockConf defaultClockConf = {
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static void ParseOptions(ClockConf *conf, int argc, char *argv[]) {
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int opt;
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optind = 1;
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while ((opt = getopt(argc, argv, ":T:S:")) != -1) {
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while ((opt = getopt(argc, argv, ":d:T:S:")) != -1) {
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switch (opt) {
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case 'T': conf->digitColor = ParseColor(optarg); break;
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case 'S': conf->markerColor = ParseColor(optarg); break;

‎pixelwall/designs.h‎

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Original file line numberDiff line numberDiff line change
@@ -26,6 +26,7 @@ extern Design lifeDesign;
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extern Design cm5Design;
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extern Design arcadeDesign;
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extern Design clockDesign;
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extern Design breakoutDesign;
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Design *designs[] = {
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&snakeDesign,
@@ -36,4 +37,5 @@ Design *designs[] = {
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&cm5Design,
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&arcadeDesign,
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&clockDesign,
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&breakoutDesign,
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};

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