New example : Textures/sprite_button

examples/textures/sprite_button/main.go

@@ -0,0 +1,94 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - sprite button
+*
+*   Example originally created with raylib 2.5, last time updated with raylib 2.5
+*
+*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+*   BSD-like license that allows static linking with closed source software
+*
+*   Copyright (c) 2019-2024 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+package main
+
+import rl "github.com/gen2brain/raylib-go/raylib"
+
+const (
+	screenWidth  = 800
+	screenHeight = 450
+	numFrames    = 3 // Number of frames (rectangles) for the button sprite texture
+)
+
+func main() {
+	rl.InitWindow(screenWidth, screenHeight, "raylib [textures] example - sprite button")
+
+	rl.InitAudioDevice() // Initialize audio device
+
+	fxButton := rl.LoadSound("buttonfx.wav") // Load button sound
+	button := rl.LoadTexture("button.png")   // Load button texture
+
+	// Define frame rectangle for drawing
+	frameHeight := float32(button.Height) / numFrames
+	sourceRec := rl.Rectangle{Width: float32(button.Width), Height: frameHeight}
+
+	// Define button bounds on screen
+	btnBounds := rl.Rectangle{
+		X:      float32(screenWidth/2.0 - button.Width/2.0),
+		Y:      float32(screenHeight/2.0 - button.Height/numFrames/2.0),
+		Width:  float32(button.Width),
+		Height: frameHeight,
+	}
+
+	btnState := 0      // Button state: 0-NORMAL, 1-MOUSE_HOVER, 2-PRESSED
+	btnAction := false // Button action should be activated
+
+	rl.SetTargetFPS(60)
+
+	// Main game loop
+	for !rl.WindowShouldClose() { // Detect window close button or ESC key
+		mousePoint := rl.GetMousePosition()
+		btnAction = false
+
+		// Check button state
+		if rl.CheckCollisionPointRec(mousePoint, btnBounds) {
+			if rl.IsMouseButtonDown(rl.MouseButtonLeft) {
+				btnState = 2
+			} else {
+				btnState = 1
+			}
+
+			if rl.IsMouseButtonReleased(rl.MouseButtonLeft) {
+				btnAction = true
+			}
+		} else {
+
+			btnState = 0
+		}
+
+		if btnAction {
+			rl.PlaySound(fxButton)
+
+			// TODO: Any desired action
+		}
+
+		// Calculate button frame rectangle to draw depending on button state
+		sourceRec.Y = float32(btnState) * frameHeight
+
+		// Draw
+		rl.BeginDrawing()
+		rl.ClearBackground(rl.RayWhite)
+
+		rl.DrawTextureRec(button, sourceRec, rl.Vector2{X: btnBounds.X, Y: btnBounds.Y}, rl.White) // Draw button frame
+
+		rl.EndDrawing()
+	}
+
+	// De-Initialization
+	rl.UnloadTexture(button) // Unload button texture
+	rl.UnloadSound(fxButton) // Unload sound
+
+	rl.CloseAudioDevice() // Close audio device
+
+	rl.CloseWindow() // Close window and OpenGL context
+}