ballsoffline/bf.go

package main

import (
	"math/rand"

	"os"
	"runtime"
	"strconv"

	gui "github.com/gen2brain/raylib-go/raygui"
	rl "github.com/gen2brain/raylib-go/raylib"
)

const (
	screenWidth    = 1280
	screenHeight   = 720
	ballRadius     = 10
	squareSize     = 110
	debug          = false
	cosmeticResize = 4
)

var (
	speed          = 200
	ballPos        = rl.Vector2{X: (squareSize * 64) / 2, Y: (squareSize * 64) / 2}
	cameraPos      = rl.Vector2{X: ballPos.X - screenWidth/2, Y: ballPos.Y - screenHeight/2}
	ballColor      = rl.Black
	paints         = []paint{}
	chatBoxText    = ""
	inputText      = ""
	loadedMap      = []string{}
	loadedTextures = []rl.Texture2D{}
	walls          = []rl.Vector2{}
	liquids        = []rl.Vector2{}
	cosmetic       = rl.Texture2D{}
	notification   = rl.Sound{}
	chatMessage    = rl.Sound{}
)

func main() {
	userData := loadJson("account.json")
	checkUserDataValid(userData)
	ballColor = convertHex(userData["color"].(string))

	rl.InitWindow(screenWidth, screenHeight, "balls offline")
	rl.InitAudioDevice()
	rl.SetTargetFPS(60)

	guessy := rl.LoadFont("./assets/font/guessy4.ttf")
	carlito := rl.LoadFont("./assets/font/carlito.ttf")

	notification = rl.LoadSound("./assets/sound/Notification.ogg")
	chatMessage = rl.LoadSound("./assets/sound/ChatMessage.ogg")

	gui.LoadStyle("./assets/bf.rgs")
	chatBoxText = userData["username"].(string) + " joined the game."
	rl.PlaySound(notification)

	rawMap, Error := os.ReadFile("./assets/maps/" + strconv.Itoa(rand.Intn(9)) + ".txt")
	loadedMap = sliceMap(string(rawMap))
	check(Error)

	walls = getBlocks(loadedMap, []int{51, 52})
	liquids = getBlocks(loadedMap, []int{53})

	cosmetic = loadCosmetic(userData)

	loadedTextures = cropTexturePack("./assets/img/textures/" + userData["texture"].(string))

	icon := rl.LoadImage("icon.png")
	rl.SetWindowIcon(*icon)

	for !rl.WindowShouldClose() {

		rl.BeginDrawing()
		rl.ClearBackground(rl.NewColor(128, 128, 128, 255))

		drawMap(loadedMap)
		drawPaint()
				drawBall(ballPos, ballColor, rl.White, cosmetic)
		moveBall()

		usernamePosisiton := rl.Vector2Subtract(ballPos, rl.Vector2{ballRadius + 24, ballRadius + 40})
		usernamePosisiton = rl.Vector2Subtract(usernamePosisiton, cameraPos)

		fpsText := "FPS: " + strconv.Itoa(int(rl.GetFPS()))

		var spacing int = 21
		drawTextShadow("Balls Offline", rl.Vector2{12, 5}, carlito, rl.White)
		rl.DrawCircleV(rl.Vector2{135, 14}, 8, rl.NewColor(0, 255, 0, 255))
		drawTextShadow(fpsText, rl.Vector2{155, 5}, carlito, rl.NewColor(0, 255, 0, 255))
		rl.DrawLine(10, 33, 120, 33, rl.NewColor(221, 221, 221, 255))
		drawTextShadow("Version: 1.0.0", rl.Vector2{10, float32(2*spacing + 1)}, carlito, rl.NewColor(168, 168, 252, 255))
		drawTextShadow("Platform: "+runtime.GOOS, rl.Vector2{10, float32(3*spacing + 1)}, carlito, rl.NewColor(168, 168, 252, 255))
		drawTextShadow("Client ID: none", rl.Vector2{10, float32(5*spacing + 1)}, carlito, rl.NewColor(221, 221, 221, 255))

		x := strconv.FormatFloat(float64(ballPos.X), 'f', -1, 64)[0:4]
		y := strconv.FormatFloat(float64(ballPos.Y), 'f', -1, 64)[0:4]

		drawTextShadow("Position: "+x+" | "+y, rl.Vector2{10, float32(6*spacing + 1)}, carlito, rl.White)

		drawTextShadow(userData["username"].(string), usernamePosisiton, guessy, rl.NewColor(221, 221, 221, 255))

		if rl.IsKeyPressed(rl.KeyEnter) && inputText != "" {
			rl.PlaySound(chatMessage)
			chatBoxText = chatBoxText + "\n" + userData["username"].(string) + ": " + inputText
			inputText = ""
		}
		gui.TextBox(rl.NewRectangle(screenWidth-screenWidth/4, 0, screenWidth/4, 220), &chatBoxText, 100, false)
		gui.TextBox(rl.NewRectangle(screenWidth-screenWidth/4, 220, screenWidth/4, 20), &inputText, 100, true)
		rl.EndDrawing()

	}

	rl.CloseAudioDevice()
	rl.CloseWindow()
}

func loadCosmetic(userData map[string]interface{}) rl.Texture2D {
	if userData["costmetic"].(string) == "none" {
		return rl.NewTexture2D(0, 0, 0, 0, 0)
	}
	image := rl.LoadImage("./assets/img/cosmetics/" + userData["costmetic"].(string))

	rl.ImageResizeNN(image, ballRadius*cosmeticResize, ballRadius*cosmeticResize)

	return rl.LoadTextureFromImage(image)
}

func moveBall() {
	if rl.IsKeyDown(rl.KeyLeftShift) {
		draw()
	}

	ballSpeed := float32(speed) * rl.GetFrameTime()
	if rl.IsKeyDown(rl.KeyRight) && !checkCollision(rl.Vector2{X: ballPos.X + ballSpeed, Y: ballPos.Y}) {
		ballPos.X = ballPos.X + ballSpeed
		cameraPos.X = cameraPos.X + ballSpeed
	}
	if rl.IsKeyDown(rl.KeyLeft) && !checkCollision(rl.Vector2{X: ballPos.X - ballSpeed, Y: ballPos.Y}) {
		ballPos.X = ballPos.X - ballSpeed
		cameraPos.X = cameraPos.X - ballSpeed
	}
	if rl.IsKeyDown(rl.KeyUp) && !checkCollision(rl.Vector2{X: ballPos.X, Y: ballPos.Y - ballSpeed}) {
		ballPos.Y = ballPos.Y - ballSpeed
		cameraPos.Y = cameraPos.Y - ballSpeed
	}
	if rl.IsKeyDown(rl.KeyDown) && !checkCollision(rl.Vector2{X: ballPos.X, Y: ballPos.Y + ballSpeed}) {
		ballPos.Y = ballPos.Y + ballSpeed
		cameraPos.Y = cameraPos.Y + ballSpeed
	}
}

func drawBall(pos rl.Vector2, color, outline rl.Color, ballCosmetic rl.Texture2D) {
	rl.DrawCircleV(rl.Vector2Subtract(pos, cameraPos), ballRadius+1, outline)
	rl.DrawCircleV(rl.Vector2Subtract(pos, cameraPos), ballRadius, color)
	rl.DrawTextureV(ballCosmetic, rl.Vector2Subtract(rl.Vector2{pos.X - ballRadius*cosmeticResize/2, pos.Y - ballRadius*cosmeticResize/2}, cameraPos), rl.White)
}

func drawTextShadow(text string, textPos rl.Vector2, font rl.Font, color rl.Color) {
	var textShadowPos rl.Vector2 = rl.Vector2{X: textPos.X + 2, Y: textPos.Y + 2}
	rl.DrawTextEx(font, text, textShadowPos, 20, 1, rl.Black)
	rl.DrawTextEx(font, text, textPos, 20, 1, color)
}

func checkCollision(newPos rl.Vector2) bool {

	for x := range liquids {
		if rl.CheckCollisionPointRec(newPos, rl.NewRectangle(liquids[x].X*squareSize, liquids[x].Y*squareSize, squareSize, squareSize)) {
			chatBoxText = chatBoxText + "\n" + "You've drowned!"
			ballPos = rl.Vector2{X: (squareSize * 64) / 2, Y: (squareSize * 64) / 2}
			cameraPos = rl.Vector2{X: ballPos.X - screenWidth/2, Y: ballPos.Y - screenHeight/2}
			rl.PlaySound(chatMessage)
		}
	}
	for x := range walls {
		if rl.CheckCollisionPointRec(newPos, rl.NewRectangle(walls[x].X*squareSize, walls[x].Y*squareSize, squareSize, squareSize)) {
			return true
		}
	}

	if newPos.X > float32(64*squareSize) {
		return true
	}
	if newPos.X < 0 {
		return true
	}
	if newPos.Y < 0 {
		return true
	}
	if newPos.Y > float32(64*squareSize) {
		return true
	}
	return false
}

func convertHex(hex string) rl.Color {
	hex1 := hex[0:2]
	hex2 := hex[2:4]
	hex3 := hex[4:6]
	decimal, err := strconv.ParseInt(hex1, 16, 64)
	checkLog(err)
	decimal2, err := strconv.ParseInt(hex2, 16, 64)
	checkLog(err)
	decimal3, err := strconv.ParseInt(hex3, 16, 64)
	checkLog(err)

	return rl.NewColor(uint8(decimal), uint8(decimal2), uint8(decimal3), 255)
}

func cropTexturePack(textureLocation string) []rl.Texture2D {
	var textures []rl.Texture2D

	for i := 0; i < 6; i++ {
		image := rl.LoadImage(textureLocation)
		croppedImage := image
		rl.ImageCrop(croppedImage, rl.NewRectangle(float32(i*32), 0, 32, 32))
		rl.ImageResizeNN(croppedImage, squareSize, squareSize)

		croppedTexture := rl.LoadTextureFromImage(croppedImage)
		rl.SetTextureFilter(croppedTexture, rl.FilterPoint)

		textures = append(textures, croppedTexture)
	}
	return textures
}