diff --git a/res/config.ini b/res/config.ini index 7e2c7eb..a74cd5c 100644 --- a/res/config.ini +++ b/res/config.ini @@ -23,6 +23,7 @@ allow_empty_password = true # doom -> PSX DOOM fire # matrix -> CMatrix # colormix -> Color mixing shader +# gameoflife -> John Conway's Game of Life animation = none # Stop the animation after some time @@ -125,6 +126,27 @@ error_fg = 0x01FF0000 # Foreground color id fg = 0x00FFFFFF +# Game of Life entropy interval (0 = disabled, >0 = add entropy every N generations) +# 0 -> Pure Conway's Game of Life (will eventually stabilize) +# 10 -> Add entropy every 10 generations (recommended for continuous activity) +# 50+ -> Less frequent entropy for more natural evolution +gameoflife_entropy_interval = 10 + +# Game of Life animation foreground color id +gameoflife_fg = 0x0000FF00 + +# Game of Life frame delay (lower = faster animation, higher = slower) +# 1-3 -> Very fast animation +# 6 -> Default smooth animation speed +# 10+ -> Slower, more contemplative speed +gameoflife_frame_delay = 6 + +# Game of Life initial cell density (0.0 to 1.0) +# 0.1 -> Sparse, minimal activity +# 0.4 -> Balanced activity (recommended) +# 0.7+ -> Dense, chaotic patterns +gameoflife_initial_density = 0.4 + # Remove main box borders hide_borders = false diff --git a/src/animations/GameOfLife.zig b/src/animations/GameOfLife.zig new file mode 100644 index 0000000..9cbefaa --- /dev/null +++ b/src/animations/GameOfLife.zig @@ -0,0 +1,189 @@ +const std = @import("std"); +const Animation = @import("../tui/Animation.zig"); +const Cell = @import("../tui/Cell.zig"); +const TerminalBuffer = @import("../tui/TerminalBuffer.zig"); + +const Allocator = std.mem.Allocator; + +const GameOfLife = @This(); + +// Visual styles - using block characters like other animations +const ALIVE_CHAR: u21 = 0x2588; // Full block █ +const DEAD_CHAR: u21 = ' '; +const NEIGHBOR_DIRS = [_][2]i8{ + .{ -1, -1 }, .{ -1, 0 }, .{ -1, 1 }, + .{ 0, -1 }, .{ 0, 1 }, .{ 1, -1 }, + .{ 1, 0 }, .{ 1, 1 }, +}; + +allocator: Allocator, +terminal_buffer: *TerminalBuffer, +current_grid: []bool, +next_grid: []bool, +frame_counter: usize, +generation: u64, +fg_color: u32, +entropy_interval: usize, +frame_delay: usize, +initial_density: f32, +dead_cell: Cell, +width: usize, +height: usize, + +pub fn init(allocator: Allocator, terminal_buffer: *TerminalBuffer, fg_color: u32, entropy_interval: usize, frame_delay: usize, initial_density: f32) !GameOfLife { + const width = terminal_buffer.width; + const height = terminal_buffer.height; + const grid_size = width * height; + + const current_grid = try allocator.alloc(bool, grid_size); + const next_grid = try allocator.alloc(bool, grid_size); + + var game = GameOfLife{ + .allocator = allocator, + .terminal_buffer = terminal_buffer, + .current_grid = current_grid, + .next_grid = next_grid, + .frame_counter = 0, + .generation = 0, + .fg_color = fg_color, + .entropy_interval = entropy_interval, + .frame_delay = frame_delay, + .initial_density = initial_density, + .dead_cell = .{ .ch = DEAD_CHAR, .fg = @intCast(TerminalBuffer.Color.DEFAULT), .bg = terminal_buffer.bg }, + .width = width, + .height = height, + }; + + // Initialize grid + game.initializeGrid(); + + return game; +} + +pub fn animation(self: *GameOfLife) Animation { + return Animation.init(self, deinit, realloc, draw); +} + +fn deinit(self: *GameOfLife) void { + self.allocator.free(self.current_grid); + self.allocator.free(self.next_grid); +} + +fn realloc(self: *GameOfLife) anyerror!void { + const new_width = self.terminal_buffer.width; + const new_height = self.terminal_buffer.height; + const new_size = new_width * new_height; + + const current_grid = try self.allocator.realloc(self.current_grid, new_size); + const next_grid = try self.allocator.realloc(self.next_grid, new_size); + + self.current_grid = current_grid; + self.next_grid = next_grid; + self.width = new_width; + self.height = new_height; + + self.initializeGrid(); + self.generation = 0; +} + +fn draw(self: *GameOfLife) void { + // Update game state at controlled frame rate + self.frame_counter += 1; + if (self.frame_counter >= self.frame_delay) { + self.frame_counter = 0; + self.updateGeneration(); + self.generation += 1; + + // Add entropy based on configuration (0 = disabled, >0 = interval) + if (self.entropy_interval > 0 and self.generation % self.entropy_interval == 0) { + self.addEntropy(); + } + } + + // Render with the configured color + const alive_cell = Cell{ .ch = ALIVE_CHAR, .fg = self.fg_color, .bg = self.terminal_buffer.bg }; + + for (0..self.height) |y| { + const row_offset = y * self.width; + for (0..self.width) |x| { + const cell = if (self.current_grid[row_offset + x]) alive_cell else self.dead_cell; + cell.put(x, y); + } + } +} + +fn updateGeneration(self: *GameOfLife) void { + // Conway's Game of Life rules with optimized neighbor counting + for (0..self.height) |y| { + const row_offset = y * self.width; + for (0..self.width) |x| { + const index = row_offset + x; + const neighbors = self.countNeighborsOptimized(x, y); + const is_alive = self.current_grid[index]; + + // Optimized rule application + self.next_grid[index] = switch (neighbors) { + 2 => is_alive, + 3 => true, + else => false, + }; + } + } + + // Efficient grid swap + std.mem.swap([]bool, &self.current_grid, &self.next_grid); +} + +fn countNeighborsOptimized(self: *GameOfLife, x: usize, y: usize) u8 { + var count: u8 = 0; + + for (NEIGHBOR_DIRS) |dir| { + const neighbor_x = @as(i32, @intCast(x)) + dir[0]; + const neighbor_y = @as(i32, @intCast(y)) + dir[1]; + const width_i32: i32 = @intCast(self.width); + const height_i32: i32 = @intCast(self.height); + + // Toroidal wrapping with modular arithmetic + const wx: usize = @intCast(@mod(neighbor_x + width_i32, width_i32)); + const wy: usize = @intCast(@mod(neighbor_y + height_i32, height_i32)); + + if (self.current_grid[wy * self.width + wx]) { + count += 1; + } + } + + return count; +} + +fn initializeGrid(self: *GameOfLife) void { + const total_cells = self.width * self.height; + + // Clear grid + @memset(self.current_grid, false); + @memset(self.next_grid, false); + + // Random initialization with configurable density + for (0..total_cells) |i| { + self.current_grid[i] = self.terminal_buffer.random.float(f32) < self.initial_density; + } +} + +fn addEntropy(self: *GameOfLife) void { + // Add fewer random cells but in clusters for more interesting patterns + const clusters = 2; + for (0..clusters) |_| { + const cx = self.terminal_buffer.random.intRangeAtMost(usize, 1, self.width - 2); + const cy = self.terminal_buffer.random.intRangeAtMost(usize, 1, self.height - 2); + + // Small cluster around center point + for (0..3) |dy| { + for (0..3) |dx| { + if (self.terminal_buffer.random.float(f32) < 0.4) { + const x = (cx + dx) % self.width; + const y = (cy + dy) % self.height; + self.current_grid[y * self.width + x] = true; + } + } + } + } +} diff --git a/src/config/Config.zig b/src/config/Config.zig index 99d7162..558668b 100644 --- a/src/config/Config.zig +++ b/src/config/Config.zig @@ -36,6 +36,10 @@ doom_bottom_color: u32 = 0x00FFFFFF, error_bg: u32 = 0x00000000, error_fg: u32 = 0x01FF0000, fg: u32 = 0x00FFFFFF, +gameoflife_fg: u32 = 0x0000FF00, +gameoflife_entropy_interval: usize = 10, +gameoflife_frame_delay: usize = 6, +gameoflife_initial_density: f32 = 0.4, hide_borders: bool = false, hide_version_string: bool = false, hide_key_hints: bool = false, diff --git a/src/enums.zig b/src/enums.zig index 6d1f1f3..a70f17c 100644 --- a/src/enums.zig +++ b/src/enums.zig @@ -3,6 +3,7 @@ pub const Animation = enum { doom, matrix, colormix, + gameoflife, }; pub const DisplayServer = enum { diff --git a/src/main.zig b/src/main.zig index 9e41dc2..17309df 100644 --- a/src/main.zig +++ b/src/main.zig @@ -12,6 +12,7 @@ const ColorMix = @import("animations/ColorMix.zig"); const Doom = @import("animations/Doom.zig"); const Dummy = @import("animations/Dummy.zig"); const Matrix = @import("animations/Matrix.zig"); +const GameOfLife = @import("animations/GameOfLife.zig"); const Animation = @import("tui/Animation.zig"); const TerminalBuffer = @import("tui/TerminalBuffer.zig"); const Session = @import("tui/components/Session.zig"); @@ -364,6 +365,10 @@ pub fn main() !void { var color_mix = ColorMix.init(&buffer, config.colormix_col1, config.colormix_col2, config.colormix_col3); animation = color_mix.animation(); }, + .gameoflife => { + var game_of_life = try GameOfLife.init(allocator, &buffer, config.gameoflife_fg, config.gameoflife_entropy_interval, config.gameoflife_frame_delay, config.gameoflife_initial_density); + animation = game_of_life.animation(); + }, } defer animation.deinit();