87 lines
2.2 KiB
Go
87 lines
2.2 KiB
Go
package main
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import (
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"fmt"
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"github.com/gen2brain/raylib-go/raylib"
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)
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const (
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maxFrameSpeed = 15
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minFrameSpeed = 1
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)
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func main() {
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screenWidth := int32(800)
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screenHeight := int32(450)
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raylib.InitWindow(screenWidth, screenHeight, "raylib [textures] example - texture loading and drawing")
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// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
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scarfy := raylib.LoadTexture("scarfy.png") // Texture loading
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position := raylib.NewVector2(350.0, 280.0)
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frameRec := raylib.NewRectangle(0, 0, scarfy.Width/6, scarfy.Height)
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currentFrame := int32(0)
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framesCounter := 0
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framesSpeed := 8 // Number of spritesheet frames shown by second
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raylib.SetTargetFPS(60)
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for !raylib.WindowShouldClose() {
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framesCounter++
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if framesCounter >= (60 / framesSpeed) {
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framesCounter = 0
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currentFrame++
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if currentFrame > 5 {
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currentFrame = 0
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}
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frameRec.X = currentFrame * scarfy.Width / 6
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}
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if raylib.IsKeyPressed(raylib.KeyRight) {
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framesSpeed++
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} else if raylib.IsKeyPressed(raylib.KeyLeft) {
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framesSpeed--
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}
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if framesSpeed > maxFrameSpeed {
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framesSpeed = maxFrameSpeed
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} else if framesSpeed < minFrameSpeed {
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framesSpeed = minFrameSpeed
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}
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raylib.BeginDrawing()
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raylib.ClearBackground(raylib.RayWhite)
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raylib.DrawTexture(scarfy, 15, 40, raylib.White)
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raylib.DrawRectangleLines(15, 40, scarfy.Width, scarfy.Height, raylib.Lime)
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raylib.DrawRectangleLines(15+frameRec.X, 40+frameRec.Y, frameRec.Width, frameRec.Height, raylib.Red)
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raylib.DrawText("FRAME SPEED: ", 165, 210, 10, raylib.DarkGray)
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raylib.DrawText(fmt.Sprintf("%02d FPS", framesSpeed), 575, 210, 10, raylib.DarkGray)
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raylib.DrawText("PRESS RIGHT/LEFT KEYS to CHANGE SPEED!", 290, 240, 10, raylib.DarkGray)
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for i := 0; i < maxFrameSpeed; i++ {
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if i < framesSpeed {
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raylib.DrawRectangle(int32(250+21*i), 205, 20, 20, raylib.Red)
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}
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raylib.DrawRectangleLines(int32(250+21*i), 205, 20, 20, raylib.Maroon)
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}
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raylib.DrawTextureRec(scarfy, frameRec, position, raylib.White) // Draw part of the texture
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raylib.DrawText("(c) Scarfy sprite by Eiden Marsal", screenWidth-200, screenHeight-20, 10, raylib.Gray)
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raylib.EndDrawing()
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}
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raylib.UnloadTexture(scarfy)
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raylib.CloseWindow()
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}
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