环境
- Time 2024-03-01
- Zig 0.12.0-dev.3076+6e078883e
- WSL-Ubuntu 22.04.3 LTS
- Raylib 5.0
前言
说明
参考资料：
- https://www.raylib.com/examples.html
目标
渲染一个按钮的不同状态，当点击按钮时，会有音效。
main.zig
const std = @import("std");
const ray = @import("raylib.zig");const NUM_FRAMES = 3;pub fn main() !void {const screenWidth: c_int = 800;const screenHeight: c_int = 450;ray.InitWindow(screenWidth, screenHeight, "raylib [texture] example");defer ray.CloseWindow();ray.SetTargetFPS(60);ray.InitAudioDevice(); // Initialize audio devicedefer ray.CloseAudioDevice();const fxButton = ray.LoadSound("res/buttonfx.wav"); // Load button sounddefer ray.UnloadSound(fxButton);const button = ray.LoadTexture("res/button.png"); // Load button texturedefer ray.UnloadTexture(button);// Define frame rectangle for drawingconst frameHeight = @divTrunc(button.height, NUM_FRAMES);var sourceRec = ray.Rectangle{.width = @floatFromInt(button.width),.height = @floatFromInt(frameHeight),};// Define button bounds on screenconst screenWidthf = @as(f32, @floatFromInt(screenWidth));const screenHeightf = @as(f32, @floatFromInt(screenHeight));const y: f32 = @floatFromInt(@divTrunc(button.height, NUM_FRAMES));const btnBounds = ray.Rectangle{.x = screenWidthf / 2.0 - @as(f32, @floatFromInt(button.width)) / 2.0,.y = screenHeightf / 2.0 - y / 2.0,.width = @floatFromInt(button.width),.height = @floatFromInt(frameHeight),};var btnState: c_int = 0; // Button state: 0-NORMAL, 1-MOUSE_HOVER, 2-PRESSEDvar btnAction = false; // Button action should be activatedvar mousePoint = ray.Vector2{};while (!ray.WindowShouldClose()) {// UpdatemousePoint = ray.GetMousePosition();btnAction = false;// Check button stateif (ray.CheckCollisionPointRec(mousePoint, btnBounds)) {if (ray.IsMouseButtonDown(ray.MOUSE_BUTTON_LEFT)) btnState = 2 else btnState = 1;if (ray.IsMouseButtonReleased(ray.MOUSE_BUTTON_LEFT)) btnAction = true;} else btnState = 0;if (btnAction) {ray.PlaySound(fxButton);// TODO: Any desired action}// Calculate button frame rectangle to draw depending on button statesourceRec.y = @floatFromInt(btnState * frameHeight);// Drawray.BeginDrawing();defer ray.EndDrawing();ray.ClearBackground(ray.RAYWHITE);ray.DrawTextureRec(button, sourceRec, .{ .x = btnBounds.x, .y = btnBounds.y }, ray.WHITE); // Draw button frameray.DrawFPS(10, 10);}
}
效果
总结
渲染一个按钮的不同状态，当点击按钮时，会有音效。