87 lines
2.1 KiB
Go
87 lines
2.1 KiB
Go
package main
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import (
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"fmt"
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"git.terah.dev/UnrealXR/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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rl.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 := rl.LoadTexture("scarfy.png") // Texture loading
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position := rl.NewVector2(350.0, 280.0)
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frameRec := rl.NewRectangle(0, 0, float32(scarfy.Width/6), float32(scarfy.Height))
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currentFrame := float32(0)
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framesCounter := 0
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framesSpeed := 8 // Number of spritesheet frames shown by second
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rl.SetTargetFPS(60)
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for !rl.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 * float32(scarfy.Width) / 6
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}
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if rl.IsKeyPressed(rl.KeyRight) {
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framesSpeed++
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} else if rl.IsKeyPressed(rl.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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rl.BeginDrawing()
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rl.ClearBackground(rl.RayWhite)
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rl.DrawTexture(scarfy, 15, 40, rl.White)
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rl.DrawRectangleLines(15, 40, scarfy.Width, scarfy.Height, rl.Lime)
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rl.DrawRectangleLines(15+int32(frameRec.X), 40+int32(frameRec.Y), int32(frameRec.Width), int32(frameRec.Height), rl.Red)
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rl.DrawText("FRAME SPEED: ", 165, 210, 10, rl.DarkGray)
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rl.DrawText(fmt.Sprintf("%02d FPS", framesSpeed), 575, 210, 10, rl.DarkGray)
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rl.DrawText("PRESS RIGHT/LEFT KEYS to CHANGE SPEED!", 290, 240, 10, rl.DarkGray)
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for i := 0; i < maxFrameSpeed; i++ {
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if i < framesSpeed {
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rl.DrawRectangle(int32(250+21*i), 205, 20, 20, rl.Red)
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}
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rl.DrawRectangleLines(int32(250+21*i), 205, 20, 20, rl.Maroon)
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}
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rl.DrawTextureRec(scarfy, frameRec, position, rl.White) // Draw part of the texture
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rl.DrawText("(c) Scarfy sprite by Eiden Marsal", screenWidth-200, screenHeight-20, 10, rl.Gray)
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rl.EndDrawing()
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}
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rl.UnloadTexture(scarfy)
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rl.CloseWindow()
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}
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