New example : Textures/sprite_anim

examples/textures/sprite_anim/main.go

@@ -0,0 +1,98 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - Sprite animation
+*
+*   Example originally created with raylib 1.3, last time updated with raylib 1.3
+*
+*   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) 2014-2024 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+package main
+
+import (
+	"fmt"
+
+	rl "github.com/gen2brain/raylib-go/raylib"
+)
+
+const (
+	screenWidth    = 800
+	screenHeight   = 450
+	maxFramesSpeed = 15
+	minFramesSpeed = 1
+)
+
+func main() {
+	rl.InitWindow(screenWidth, screenHeight, "raylib [texture] example - sprite anim")
+
+	// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
+	scarfy := rl.LoadTexture("scarfy.png") // Texture loading
+
+	position := rl.Vector2{X: 350.0, Y: 280.0}
+	frameRec := rl.Rectangle{Width: float32(scarfy.Width / 6), Height: float32(scarfy.Height)}
+	var currentFrame, framesCounter, framesSpeed int32 = 0, 0, 8
+
+	rl.SetTargetFPS(60) // Set our game to run at 60 frames-per-second
+
+	// Main game loop
+	for !rl.WindowShouldClose() { // Detect window close button or ESC key
+		framesCounter++
+
+		if framesCounter >= (60 / framesSpeed) {
+			framesCounter = 0
+			currentFrame++
+
+			if currentFrame > 5 {
+				currentFrame = 0
+			}
+
+			frameRec.X = float32(currentFrame*scarfy.Width) / 6
+		}
+
+		// Control frames speed
+		if rl.IsKeyPressed(rl.KeyRight) {
+			framesSpeed++
+		} else if rl.IsKeyPressed(rl.KeyLeft) {
+			framesSpeed--
+		}
+
+		// Make sure that framesSpeed is between minFramesSpeed and maxFramesSpeed
+		framesSpeed = clamp(framesSpeed, minFramesSpeed, maxFramesSpeed)
+
+		// Draw
+		rl.BeginDrawing()
+		rl.ClearBackground(rl.RayWhite)
+
+		rl.DrawTexture(scarfy, 15, 40, rl.White)
+		rl.DrawRectangleLines(15, 40, scarfy.Width, scarfy.Height, rl.Lime)
+		rl.DrawRectangleLines(15+int32(frameRec.X), 40+int32(frameRec.Y), int32(frameRec.Width), int32(frameRec.Height), rl.Red)
+
+		rl.DrawText("FRAME SPEED: ", 165, 210, 10, rl.DarkGray)
+		rl.DrawText(fmt.Sprintf("%02d FPS", framesSpeed), 575, 210, 10, rl.DarkGray)
+		rl.DrawText("PRESS RIGHT/LEFT KEYS to CHANGE SPEED!", 290, 240, 10, rl.DarkGray)
+
+		for i := int32(0); i < maxFramesSpeed; i++ {
+			if i < framesSpeed {
+				rl.DrawRectangle(250+21*i, 205, 20, 20, rl.Red)
+			}
+			rl.DrawRectangleLines(250+21*i, 205, 20, 20, rl.Maroon)
+		}
+
+		rl.DrawTextureRec(scarfy, frameRec, position, rl.White) // Draw part of the texture
+
+		rl.DrawText("(c) Scarfy sprite by Eiden Marsal", screenWidth-200, screenHeight-20, 10, rl.Gray)
+
+		rl.EndDrawing()
+	}
+
+	// De-Initialization
+	rl.UnloadTexture(scarfy) // Texture unloading
+	rl.CloseWindow()         // Close window and OpenGL context
+}
+
+func clamp(value, minValue, maxValue int32) int32 {
+	return max(minValue, min(value, maxValue))
+}