diff --git a/examples/textures/sprite_anim/main.go b/examples/textures/sprite_anim/main.go new file mode 100644 index 0000000..10e5383 --- /dev/null +++ b/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)) +} diff --git a/examples/textures/sprite_anim/scarfy.png b/examples/textures/sprite_anim/scarfy.png new file mode 100644 index 0000000..be3b83d Binary files /dev/null and b/examples/textures/sprite_anim/scarfy.png differ