This commit is contained in:
Kied Llaentenn 2019-12-12 17:08:35 -05:00
parent d39751198c
commit 202083fcef
5 changed files with 107 additions and 1 deletions

7
cols.h Normal file
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@ -0,0 +1,7 @@
#ifndef COLS_H
#define COLS_H
static int colors[] = {
#endif

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fire Executable file

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99
main.c
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@ -0,0 +1,99 @@
#include <math.h>
#include <stdio.h>
#include <unistd.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#define BOOL unsigned char
#define TRUE 1
#define FALSE 0
#define PRINT(...) fprintf(stderr, __VA_ARGS__);
// I miss the Rust type system :(
typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
#if UINTPTR_MAX == 0xffff
typedef uint16_t usize;
#elif UINTPTR_MAX == 0xffffffff
typedef uint32_t usize;
#elif UINTPTR_MAX == 0xffffffffffffffff
typedef uint64_t usize;
#endif
char esc = (char) 27;
usize width;
usize height;
usize palette[] = { 0x00, 0xff0000, 0xff6611, 0xffff66, 0xffffff };
usize *pixels;
void dofire ( void );
void draw ( void );
int
main ( void )
{
// populate width and height
struct winsize w;
ioctl(0, TIOCGWINSZ, &w);
width = w.ws_row;
height = w.ws_col;
pixels = (usize*) calloc((width * height), sizeof(usize));
// init pixels
for (usize i = 0; i < width; i++)
{
pixels[((width * height) - width) + i] = palette[4];
}
dofire();
return 0;
}
void
dofire ( void )
{
for (usize x = 0; x < width; x++)
{
for (usize y = 0; y < height; y++)
{
usize src = y * width + x;
usize random = (rand() % 7) & 3;
usize dest = src - random + 1;
usize color;
if (width > dest ) dest = 0;
else dest -= width;
pixels[dest] = pixels[src] - (random & 1);
draw();
}
}
}
void
draw ( void )
{
// clear screen
PRINT("%c[2J", esc);
// draw pixels onto screen
for (usize x = 0; x < width; x++)
{
for (usize y = 0; y < height; y++)
{
usize color = pixels[y * width + x];
u8 blue = color % 256;
u8 green = ((color - blue) / 256) % 256;
u8 red = ((color - blue) / (int)pow((double)256, (double)2))-(green / 256);
PRINT("%c[48;2;%i;%i;%im %c[0m", esc, red, blue, green, esc);
}
PRINT("\n");
}
}

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main.o Normal file

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@ -9,7 +9,7 @@ WARNING = -Wall -Wextra -pedantic -Wmissing-prototypes \
-Wold-style-definition -Werror -Wold-style-definition -Werror
CC = clang CC = clang
CFLAGS = -g -O3 -std=c99 $(WARNING) CFLAGS = -g -std=c99 $(WARNING)
LDFLAGS = -fuse-ld=lld LDFLAGS = -fuse-ld=lld
SRC = main.c SRC = main.c