Add animation framework

Signed-off-by: AnErrupTion <anerruption@disroot.org>

src/animations/ColorMix.zig

@@ -1,4 +1,5 @@
 const std = @import("std");
+const Animation = @import("../tui/Animation.zig");
 const TerminalBuffer = @import("../tui/TerminalBuffer.zig");
 const utils = @import("../tui/utils.zig");
 
@@ -43,7 +44,15 @@ pub fn init(terminal_buffer: *TerminalBuffer, col1: u32, col2: u32, col3: u32) C
     };
 }
 
-pub fn draw(self: *ColorMix) void {
+pub fn animation(self: *ColorMix) Animation {
+    return Animation.init(self, deinit, realloc, draw);
+}
+
+fn deinit(_: *ColorMix) void {}
+
+fn realloc(_: *ColorMix) anyerror!void {}
+
+fn draw(self: *ColorMix) void {
     self.frames +%= 1;
     const time: f32 = @as(f32, @floatFromInt(self.frames)) * time_scale;
 

src/animations/Doom.zig

@@ -1,5 +1,6 @@
 const std = @import("std");
 const Allocator = std.mem.Allocator;
+const Animation = @import("../tui/Animation.zig");
 const TerminalBuffer = @import("../tui/TerminalBuffer.zig");
 const utils = @import("../tui/utils.zig");
 
@@ -38,17 +39,21 @@ pub fn init(allocator: Allocator, terminal_buffer: *TerminalBuffer, top_color: u
     };
 }
 
-pub fn deinit(self: Doom) void {
+pub fn animation(self: *Doom) Animation {
+    return Animation.init(self, deinit, realloc, draw);
+}
+
+fn deinit(self: *Doom) void {
     self.allocator.free(self.buffer);
 }
 
-pub fn realloc(self: *Doom) !void {
+fn realloc(self: *Doom) anyerror!void {
     const buffer = try self.allocator.realloc(self.buffer, self.terminal_buffer.width * self.terminal_buffer.height);
     initBuffer(buffer, self.terminal_buffer.width);
     self.buffer = buffer;
 }
 
-pub fn draw(self: Doom) void {
+fn draw(self: *Doom) void {
     for (0..self.terminal_buffer.width) |x| {
         for (1..self.terminal_buffer.height) |y| {
             const source = y * self.terminal_buffer.width + x;

src/animations/Matrix.zig

@@ -1,6 +1,7 @@
 const std = @import("std");
 const Allocator = std.mem.Allocator;
 const Random = std.Random;
+const Animation = @import("../tui/Animation.zig");
 const TerminalBuffer = @import("../tui/TerminalBuffer.zig");
 const utils = @import("../tui/utils.zig");
 
@@ -54,12 +55,16 @@ pub fn init(allocator: Allocator, terminal_buffer: *TerminalBuffer, fg_ini: u32,
     };
 }
 
-pub fn deinit(self: Matrix) void {
+pub fn animation(self: *Matrix) Animation {
+    return Animation.init(self, deinit, realloc, draw);
+}
+
+fn deinit(self: *Matrix) void {
     self.allocator.free(self.dots);
     self.allocator.free(self.lines);
 }
 
-pub fn realloc(self: *Matrix) !void {
+fn realloc(self: *Matrix) anyerror!void {
     const dots = try self.allocator.realloc(self.dots, self.terminal_buffer.width * (self.terminal_buffer.height + 1));
     const lines = try self.allocator.realloc(self.lines, self.terminal_buffer.width);
 
@@ -69,7 +74,7 @@ pub fn realloc(self: *Matrix) !void {
     self.lines = lines;
 }
 
-pub fn draw(self: *Matrix) void {
+fn draw(self: *Matrix) void {
     const buf_height = self.terminal_buffer.height;
     const buf_width = self.terminal_buffer.width;
     self.count += 1;