From 51024e1d06b2ec299d39282d5a466d70c367dec3 Mon Sep 17 00:00:00 2001
From: xamidev <qelal@batareika.com>
Date: Sat, 10 Aug 2024 22:58:56 +0200
Subject: [PATCH] Add: conway game (basic) but flickers?

---
 com1.out                | Bin 227 -> 1907 bytes
 iso/boot/kernel.elf     | Bin 30876 -> 35236 bytes
 src/kernel/kmain.c      |   2 +-
 src/kernel/shell.c      |   3 +-
 src/libc/crypto.c       |  19 ++++++
 src/libc/crypto.h       |   5 ++
 src/programs/conway.c   | 132 ++++++++++++++++++++++++++++++++++++++++
 src/programs/conway.h   |  18 ++++++
 src/programs/misc.c     |   2 +-
 src/programs/programs.h |   1 +
 10 files changed, 179 insertions(+), 3 deletions(-)
 create mode 100644 src/programs/conway.c
 create mode 100644 src/programs/conway.h

diff --git a/com1.out b/com1.out
index 10c4e1d7383e1041f28ad6a13f8547fed8f32526..70ff6a0700ddc32bf3c75b33ab72989adadd86e0 100644
GIT binary patch
literal 1907
zcma!cadirHk5ynOPA$qz%uz_r&&x|qF3HT#Q%Ef?NlePgEY3(x;bMsP^mFqED$C5v
zECH&^tV&H$aCZq&NX;uL%1kZBuE5hJ1cyX$5H2l2fk-k2oXGZ-Wag$8DP$z(rR1a*
wAq+-Ul$~0cl%H6Xf}{@SMWD0GQi1wL`H(0d4Uf_EFq$7m%Y)JKkgnw+0OHXS+yDRo

delta 6
Ncmey&_n2|QV*m?~16cq7

diff --git a/iso/boot/kernel.elf b/iso/boot/kernel.elf
index 8e5c86cab238ada0cbd3bf2c0c940666680dad14..ff425bf4c573406508793ff126674b9e2becd198 100755
GIT binary patch
delta 12123
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diff --git a/src/kernel/kmain.c b/src/kernel/kmain.c
index c2f8806..21ddf39 100644
--- a/src/kernel/kmain.c
+++ b/src/kernel/kmain.c
@@ -35,7 +35,7 @@ void kmain(unsigned int multiboot_info_address)
   clear();
   colorputs(ascii_title, 10);
   colorputs("   by @xamidev - star the repo for a cookie!\n\n", 14);
- 
+
   timer_install();
   serial_printf(2, "%d\tinitialized timer handler", global_ticks); 
   keyboard_install(); 
diff --git a/src/kernel/shell.c b/src/kernel/shell.c
index e5325ec..853a92f 100644
--- a/src/kernel/shell.c
+++ b/src/kernel/shell.c
@@ -65,7 +65,8 @@ void shell_install()
   register_command("uptime", program_uptime);
   register_command("echo", program_echo);
   register_command("sysinfo", program_sysinfo);
-  
+  register_command("conway", program_conway);
+
   for (;;)
   {
     char input_buffer[BUFFER_SIZE];
diff --git a/src/libc/crypto.c b/src/libc/crypto.c
index df39fe7..b9c261e 100644
--- a/src/libc/crypto.c
+++ b/src/libc/crypto.c
@@ -1,4 +1,5 @@
 #include "crypto.h"
+#include "../libc/stdint.h"
 
 int lcg(int seed)
 {
@@ -22,3 +23,21 @@ int randint(int seed)
 	int x = lcg(seed);
 	return x;
 }
+
+static uint32_t next = 1;
+
+uint32_t rand()
+{
+	next = next * 1103515245 + 12345;
+	return (next/65536) % 32768;
+}
+
+float rand_float()
+{
+	return rand() / 32767.0f;
+}
+
+void srand(uint32_t seed)
+{
+	next = seed;
+}
diff --git a/src/libc/crypto.h b/src/libc/crypto.h
index dd8c561..04a54b1 100644
--- a/src/libc/crypto.h
+++ b/src/libc/crypto.h
@@ -3,7 +3,12 @@
 
 #define RAND_MAX 1024
 
+#include "../libc/stdint.h"
+
 int lcg(int seed);
 int randint(int seed);
+uint32_t rand();
+float rand_float();
+void srand(uint32_t seed);
 
 #endif
diff --git a/src/programs/conway.c b/src/programs/conway.c
new file mode 100644
index 0000000..703512d
--- /dev/null
+++ b/src/programs/conway.c
@@ -0,0 +1,132 @@
+#include "conway.h"
+#include "../libc/stdio.h"
+#include "../kernel/system.h"
+#include "../libc/crypto.h"
+#include "../libc/stdint.h"
+#include "../drivers/serial.h"
+#include "../libc/string.h"
+
+void print_grid(const unsigned char grid[X][Y])
+{
+	for (int i=0; i<X; i++)
+	{
+		for (int j=0; j<Y; j++)
+		{
+			//(grid[i][j] == LIVE) ? putc(42) : putc(32);
+			if (grid[i][j] == LIVE) {
+				serial_printf(3, "alive");
+			       colorputc(32, 120);
+			} else {
+	       		       putc(32);
+			}		       
+		}
+	}
+}
+
+int count_live_neighbors(const unsigned char grid[X][Y], int i, int j)
+{
+	int live_neighbors = 0;
+
+	for (int x=-1; x<=1; x++)
+	{
+		for (int y=-1; y<=1; y++)
+		{
+			if (x==0 && y==0) continue;
+
+			int ni = i+x;
+			int nj = j+y;
+
+			if (ni >= 0 && ni < X && nj >= 0)
+			{
+				if (grid[ni][nj] == LIVE) live_neighbors++;
+			}
+		}
+	}
+	return live_neighbors;
+}
+
+void grid_new_generation(unsigned char grid[X][Y], unsigned char temp[X][Y])
+{
+	for (int i=0; i<X; i++)
+	{
+		for (int j=0; j<Y; j++)
+		{
+			int cell = grid[i][j];
+			int live_neighbors = count_live_neighbors(grid, i, j);
+
+			if (cell == LIVE)
+			{
+				switch(live_neighbors)
+				{
+					case 2:
+					case 3:
+						temp[i][j] = LIVE;
+						break;
+					default:
+						temp[i][j] = DEAD;
+						break;
+				}
+			}
+			else if (cell == DEAD && live_neighbors == 3)
+			{
+				temp[i][j] = LIVE;
+			}
+		}
+	}
+
+	for (int i=0; i<X; i++)
+	{
+		for (int j=0; j<Y; j++)
+		{
+			grid[i][j] = temp[i][j];
+			temp[i][j] = DEAD;
+		}
+	}
+}
+
+void soup(unsigned char grid[X][Y])
+{
+	srand(global_ticks);
+	for (int i=0; i<X; i++)
+	{
+		for (int j=0; j<Y; j++)
+		{
+			grid[i][j] = rand_float() > SOUP_PROB ? LIVE : DEAD; 
+		}
+	}
+}
+
+void program_conway(int argc, char* argv[])
+{
+	clear();
+	unsigned char grid[X][Y] = {0};
+	unsigned char temp[X][Y] = {0};
+
+	if (argc == 1)
+	{
+		soup(grid);
+	} else if (argc == 2 && strcmp(argv[1], "-g") == 0) {
+		grid[1][2] = LIVE;
+		grid[2][3] = LIVE;
+		grid[3][1] = LIVE;
+		grid[3][2] = LIVE;
+		grid[3][3] = LIVE;	
+	} else if (argc == 2 && strcmp(argv[1], "-l") == 0) {
+		grid[10][3] = LIVE; grid[10][4] = LIVE; grid[10][5] = LIVE; grid[10][6] = LIVE;
+		grid[11][2] = LIVE; grid[11][6] = LIVE;
+		grid[12][6] = LIVE;
+		grid[13][2] = LIVE; grid[13][5] = LIVE;
+	}
+
+	print_grid(grid);
+	puts("generation 0");
+	for (int i=1; i<GENERATIONS; i++)
+	{
+		grid_new_generation(grid, temp);
+		delay(DELAY);
+		clear();
+		print_grid(grid);
+		printf("generation %d", i);
+	}
+	
+}
diff --git a/src/programs/conway.h b/src/programs/conway.h
new file mode 100644
index 0000000..77d3db2
--- /dev/null
+++ b/src/programs/conway.h
@@ -0,0 +1,18 @@
+#ifndef CONWAY_H
+#define CONWAY_H
+
+#define X 25
+#define Y 80
+
+#define GENERATIONS 100
+#define DEAD 0
+#define LIVE 1
+#define SOUP_PROB 0.7
+#define DELAY 10
+
+void print_grid(const unsigned char grid[X][Y]);
+int count_live_neighbors(const unsigned char grid[X][Y], int i, int j);
+void grid_new_generation(unsigned char grid[X][Y], unsigned char temp[X][Y]);
+void soup(unsigned char grid[X][Y]);
+
+#endif
diff --git a/src/programs/misc.c b/src/programs/misc.c
index 7e0f126..0e521b7 100644
--- a/src/programs/misc.c
+++ b/src/programs/misc.c
@@ -45,7 +45,7 @@ void program_uptime()
 
 void program_help()
 {
-	printf("help\tpanic\twords\tprimes\trainbow\tclear\nmath\tbf\t   uptime   echo\t  sysinfo\n");
+	printf("help\tpanic\twords\tprimes\trainbow\tclear\nmath\tbf\t   uptime   echo\t  sysinfo\tconway\n");
 }
 
 // Panic
diff --git a/src/programs/programs.h b/src/programs/programs.h
index 37ebde2..e930827 100644
--- a/src/programs/programs.h
+++ b/src/programs/programs.h
@@ -9,6 +9,7 @@ void program_sysinfo();
 
 void get_cpuid();
 void get_meminfo(unsigned int multiboot_info_address);
+void program_conway();
 
 // Misc
 void program_rainbow();