54 lines
1.7 KiB
Zig
54 lines
1.7 KiB
Zig
const std = @import("std");
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const rl = @cImport({
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@cInclude("raylib.h");
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});
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const WINDOW_WIDTH = 800;
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const WINDOW_HEIGHT = 600;
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const LOGO_HEIGHT = 64;
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const LOGO_SPEED: f32 = 300;
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const BLACK = rl.Color{ .r = 0, .g = 0, .b = 0, .a = 255 };
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const WHITE = rl.Color{ .r = 255, .g = 255, .b = 255, .a = 255 };
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pub fn main() void {
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rl.InitWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Raylib in Zig");
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rl.SetTargetFPS(60);
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rl.SetRandomSeed(@intCast(std.time.timestamp()));
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var logo_image = rl.LoadImage("./zig_logo.png");
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rl.ImageResize(&logo_image, @divTrunc(logo_image.width * LOGO_HEIGHT, logo_image.height), LOGO_HEIGHT);
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const logo_texture = rl.LoadTextureFromImage(logo_image);
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rl.UnloadImage(logo_image);
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var x: f32 = @floatFromInt(rl.GetRandomValue(0, WINDOW_WIDTH - logo_texture.width));
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var y: f32 = @floatFromInt(rl.GetRandomValue(0, WINDOW_HEIGHT - logo_texture.height));
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var dx: f32 = if (rl.GetRandomValue(0, 1) == 1) -LOGO_SPEED else LOGO_SPEED;
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var dy: f32 = if (rl.GetRandomValue(0, 1) == 1) -LOGO_SPEED else LOGO_SPEED;
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while (!rl.WindowShouldClose()) {
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const delta_time = rl.GetFrameTime();
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x += dx * delta_time;
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y += dy * delta_time;
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if (x < 0 or x + @as(f32, @floatFromInt(logo_texture.width)) >= WINDOW_WIDTH - 1) {
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dx *= -1;
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x += dx * delta_time;
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}
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if (y < 0 or y + @as(f32, @floatFromInt(logo_texture.height)) >= WINDOW_HEIGHT - 1) {
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dy *= -1;
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y += dy * delta_time;
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}
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rl.BeginDrawing();
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rl.ClearBackground(BLACK);
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rl.DrawTextureV(logo_texture, rl.Vector2{ .x = x, .y = y }, WHITE);
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rl.EndDrawing();
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}
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rl.UnloadTexture(logo_texture);
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rl.CloseWindow();
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}
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