环境
- Time 2023-08-22
- Zig 0.11.0
- WSL-Ubuntu 22.04.3 LTS
前言
说明
参考资料：
- https://www.youtube.com/watch?v=nF_crEtmpBo
- https://github.com/howprice/sdl2-tetris
目标
将游戏显示窗口的逻辑，封装到一起。
c.zig
pub usingnamespace @cImport({@cInclude("SDL.h");@cInclude("SDL_ttf.h");
});const self = @This();
const std = @import("std");pub fn sdlPanic() noreturn {const str = @as(?[*:0]const u8, self.SDL_GetError());@panic(std.mem.sliceTo(str orelse "unknown error", 0));
}
display.zig
游戏的大小为宽 10，高 20。
const c = @import("c.zig");pub const WIDTH = 10;
pub const HEIGHT = 20;pub const Screen = struct {buffer: [WIDTH][HEIGHT]u32 = undefined,window: *c.SDL_Window = undefined,renderer: *c.SDL_Renderer = undefined,pub fn init(self: *Screen) void {if (c.SDL_Init(c.SDL_INIT_EVERYTHING) < 0) c.sdlPanic();const center = c.SDL_WINDOWPOS_CENTERED;self.window = c.SDL_CreateWindow("俄罗斯方块", center, center, //400, 800, c.SDL_WINDOW_SHOWN) orelse c.sdlPanic();self.renderer = c.SDL_CreateRenderer(self.window, -1, 0) //orelse c.sdlPanic();}pub fn deinit(self: *Screen) void {c.SDL_DestroyRenderer(self.renderer);c.SDL_DestroyWindow(self.window);c.SDL_Quit();}
};
main.zig
const c = @import("c.zig");
const display = @import("display.zig");pub fn main() !void {var screen = display.Screen{};screen.init();defer screen.deinit();mainLoop: while (true) {var event: c.SDL_Event = undefined;while (c.SDL_PollEvent(&event) != 0) {if (event.type == c.SDL_QUIT)break :mainLoop;}_ = c.SDL_SetRenderDrawColor(screen.renderer, 0x3B, 0x3B, 0x3B, 0xFF);_ = c.SDL_RenderClear(screen.renderer);c.SDL_RenderPresent(screen.renderer);}
}
将游戏的显示逻辑封装到了 display.zig 文件中，不改变原有的显示逻辑。
效果
总结
将其中的显示逻辑进行了封装，没有改变原有的显示逻辑。