GOingTunneling/playerutil.go

package main

import (
	"github.com/veandco/go-sdl2/sdl"
	"math/rand"
	"net"
)

func getUnusedColor(colors []PlayerColors, players map[uint32]*Player) uint32 {
	for i, c := range colors {
		foundPlayerWithColor := false
		var colorCompare []uint8
		clrR, clrG, clrB, clrA := c.tracks.RGBA()
		colorCompare = append(colorCompare, uint8(clrR), uint8(clrG), uint8(clrB), uint8(clrA))
		clrR, clrG, clrB, clrA = c.body.RGBA()
		colorCompare = append(colorCompare, uint8(clrR), uint8(clrG), uint8(clrB), uint8(clrA))
		clrR, clrG, clrB, clrA = c.cannon.RGBA()
		colorCompare = append(colorCompare, uint8(clrR), uint8(clrG), uint8(clrB), uint8(clrA))
		playersMutex.RLock()
		for _, player := range players {
			var playerColorsCompare []uint8
			plrR, plrG, plrB, plrA := player.playerColors.tracks.RGBA()
			playerColorsCompare = append(playerColorsCompare, uint8(plrR), uint8(plrG), uint8(plrB), uint8(plrA))
			plrR, plrG, plrB, plrA = player.playerColors.body.RGBA()
			playerColorsCompare = append(playerColorsCompare, uint8(plrR), uint8(plrG), uint8(plrB), uint8(plrA))
			plrR, plrG, plrB, plrA = player.playerColors.cannon.RGBA()
			playerColorsCompare = append(playerColorsCompare, uint8(plrR), uint8(plrG), uint8(plrB), uint8(plrA))
			foundPlayerWithColor = false
			if len(playerColorsCompare) == len(colorCompare) {
				for i, c := range colorCompare {
					if playerColorsCompare[i] == c {
						foundPlayerWithColor = true
					} else {
						foundPlayerWithColor = false
						break
					}
				}
				if foundPlayerWithColor {
					break
				}
			}
		}
		playersMutex.RUnlock()
		if !foundPlayerWithColor {
			return uint32(i)
		}
	}
	return uint32(len(colors) - 1)
}

func createPlayers(amount uint8, playerColors []PlayerColors, keyMaps []KeyMap, joyMaps []JoyMap, gameMap *GameMap, players map[uint32]*Player, bases map[uint32]*Base) {
	joyStickCount := sdl.NumJoysticks()
	if amount > uint8(len(keyMaps)+len(joyMaps)) || amount > uint8(len(keyMaps)+joyStickCount) {
		panic("Too many players, not enough inputs")
	}
	if amount >= uint8(len(playerColors)) {
		panic("Too many players, not enough colors")
	}
	addedKeyboardPlayers := 0
	for i := uint8(0); i < amount; i++ {
		var keyMap KeyMap
		var joyMap JoyMap
		var joyStick *sdl.Joystick

		if (config.DoAllKeymapsPlayers && i <= uint8(len(keyMaps))) || (config.DoKeymapPlayer && i == 0) || (uint8(joyStickCount) <= i) {
			keyMap = keyMaps[(addedKeyboardPlayers+int(config.KeyBindOffset))%(len(keyMaps)-1)]
			addedKeyboardPlayers++
		} else {
			joyStickIndex := i - uint8(addedKeyboardPlayers)
			joyMap = joyMaps[joyStickIndex]
			joyStick = sdl.JoystickOpen(int(joyStickIndex))
		}
		unusedColor := getUnusedColor(playerColors, players)
		createPlayer(
			true,
			playerColors[unusedColor],
			unusedColor,
			nil,
			keyMap,
			joyMap,
			joyStick,
			gameMap,
			players,
			bases,
		)
	}
}

func closeThings(players map[uint32]*Player) {
	playersMutex.Lock()
	for _, player := range players {
		if player.joyStick != nil {
			player.joyStick.Close()
		}
		if player.window != nil {
			_ = player.window.Destroy()
		}
		if player.logicalSurface != nil {
			player.logicalSurface.Free()
		}
		if player.playSurface != nil {
			player.playSurface.Free()
		}
		if player.HUDSurface != nil {
			player.HUDSurface.Free()
		}
	}
	playersMutex.Unlock()
}

func createPlayer(local bool, thisPlayerColors PlayerColors, thisPlayerColorIndex uint32, conn *net.TCPConn, keyMap KeyMap, joyMap JoyMap, joyStick *sdl.Joystick, gameMap *GameMap, players map[uint32]*Player, bases map[uint32]*Base) uint32 {
	coordsAreValid := false
	var posX, posY uint32
	maxTries := 1000
	baseSize := uint32(36)     // Since the base is 36x36
	minDistance := uint32(200) // Minimum distance between bases
	maxDistance := uint32(500) // Maximum distance between bases

	for !coordsAreValid && maxTries >= 0 {
		maxTries--
		posX = uint32(16 + rand.Intn(int(gameMap.width-baseSize-16)))
		posY = uint32(16 + rand.Intn(int(gameMap.height-baseSize-16)))

		coordsAreValid = true
		baseMutex.RLock()
		for _, base := range bases {
			basePosX := uint32(base.gameObject.baseRect.X)
			basePosY := uint32(base.gameObject.baseRect.Y)

			// Calculate the distance between the edges of the bases
			distanceX := max(0, max(basePosX-posX-baseSize, posX-basePosX-baseSize))
			distanceY := max(0, max(basePosY-posY-baseSize, posY-basePosY-baseSize))

			distanceSquared := distanceX*distanceX + distanceY*distanceY

			if distanceSquared < minDistance*minDistance && distanceSquared > maxDistance*maxDistance {
				coordsAreValid = false
				break
			}
		}
		baseMutex.RUnlock()

		// Edge clamping to ensure the base is within the map boundaries
		if posX < 16 || posX > gameMap.width-baseSize-16 || posY < 16 || posY > gameMap.height-baseSize-16 {
			coordsAreValid = false
			break
		}
	}

	if maxTries < 0 {
		panic("Could not place all players, increase map size")
	}

	gameObject := &GameObject{}

	gameObject.baseRect = &sdl.Rect{
		X: int32(posX),
		Y: int32(posY),
		W: 7,
		H: 7,
	}

	gameObject.addColor(thisPlayerColors.tracks)
	gameObject.addColor(thisPlayerColors.body)
	gameObject.addColor(thisPlayerColors.cannon)

	gameObject.orientation = 0 // Up
	gameObject.addColoredRect(0, 1, 1, 6, 0)
	gameObject.addColoredRect(4, 1, 1, 6, 0)
	gameObject.addColoredRect(1, 2, 3, 4, 1)
	gameObject.addColoredRect(2, 0, 1, 4, 2)

	gameObject.orientation = 1 // Right
	gameObject.addColoredRect(0, 0, 6, 1, 0)
	gameObject.addColoredRect(0, 4, 6, 1, 0)
	gameObject.addColoredRect(1, 1, 4, 3, 1)
	gameObject.addColoredRect(3, 2, 4, 1, 2)

	gameObject.orientation = 2 // Down
	gameObject.addColoredRect(0, 0, 1, 6, 0)
	gameObject.addColoredRect(4, 0, 1, 6, 0)
	gameObject.addColoredRect(1, 1, 3, 4, 1)
	gameObject.addColoredRect(2, 3, 1, 4, 2)

	gameObject.orientation = 3 // Left
	gameObject.addColoredRect(1, 0, 6, 1, 0)
	gameObject.addColoredRect(1, 4, 6, 1, 0)
	gameObject.addColoredRect(2, 1, 4, 3, 1)
	gameObject.addColoredRect(0, 2, 4, 1, 2)

	gameObject.orientation = 4 // Up-Right
	gameObject.addColoredRect(3, 0, 1, 1, 0)
	gameObject.addColoredRect(2, 1, 1, 1, 0)
	gameObject.addColoredRect(1, 2, 1, 1, 0)
	gameObject.addColoredRect(0, 3, 1, 1, 0)
	gameObject.addColoredRect(6, 3, 1, 1, 0)
	gameObject.addColoredRect(5, 4, 1, 1, 0)
	gameObject.addColoredRect(4, 5, 1, 1, 0)
	gameObject.addColoredRect(3, 6, 1, 1, 0)

	gameObject.addColoredRect(3, 1, 1, 1, 1)
	gameObject.addColoredRect(2, 2, 2, 1, 1)
	gameObject.addColoredRect(1, 3, 2, 1, 1)

	gameObject.addColoredRect(4, 3, 2, 1, 1)
	gameObject.addColoredRect(2, 4, 3, 1, 1)
	gameObject.addColoredRect(3, 5, 1, 1, 1)

	gameObject.addColoredRect(5, 1, 1, 1, 2)
	gameObject.addColoredRect(4, 2, 1, 1, 2)
	gameObject.addColoredRect(3, 3, 1, 1, 2)

	// Up-Left orientation (Y-axis reflection)
	gameObject.orientation = 5 // Up-Left
	gameObject.addColoredRect(3, 0, 1, 1, 0)
	gameObject.addColoredRect(4, 1, 1, 1, 0)
	gameObject.addColoredRect(5, 2, 1, 1, 0)
	gameObject.addColoredRect(6, 3, 1, 1, 0)
	gameObject.addColoredRect(0, 3, 1, 1, 0)
	gameObject.addColoredRect(1, 4, 1, 1, 0)
	gameObject.addColoredRect(2, 5, 1, 1, 0)
	gameObject.addColoredRect(3, 6, 1, 1, 0)

	gameObject.addColoredRect(3, 1, 1, 1, 1)
	gameObject.addColoredRect(3, 2, 2, 1, 1)
	gameObject.addColoredRect(4, 3, 2, 1, 1)

	gameObject.addColoredRect(1, 3, 2, 1, 1)
	gameObject.addColoredRect(2, 4, 3, 1, 1)
	gameObject.addColoredRect(3, 5, 1, 1, 1)

	gameObject.addColoredRect(1, 1, 1, 1, 2)
	gameObject.addColoredRect(2, 2, 1, 1, 2)
	gameObject.addColoredRect(3, 3, 1, 1, 2)

	// Down-Right orientation (X-axis reflection)
	gameObject.orientation = 6 // Down-Right
	gameObject.addColoredRect(3, 6, 1, 1, 0)
	gameObject.addColoredRect(2, 5, 1, 1, 0)
	gameObject.addColoredRect(1, 4, 1, 1, 0)
	gameObject.addColoredRect(0, 3, 1, 1, 0)
	gameObject.addColoredRect(6, 3, 1, 1, 0)
	gameObject.addColoredRect(5, 2, 1, 1, 0)
	gameObject.addColoredRect(4, 1, 1, 1, 0)
	gameObject.addColoredRect(3, 0, 1, 1, 0)

	gameObject.addColoredRect(3, 5, 1, 1, 1)
	gameObject.addColoredRect(2, 4, 2, 1, 1)
	gameObject.addColoredRect(1, 3, 2, 1, 1)

	gameObject.addColoredRect(4, 3, 2, 1, 1)
	gameObject.addColoredRect(2, 2, 3, 1, 1)
	gameObject.addColoredRect(3, 1, 1, 1, 1)

	gameObject.addColoredRect(5, 5, 1, 1, 2)
	gameObject.addColoredRect(4, 4, 1, 1, 2)
	gameObject.addColoredRect(3, 3, 1, 1, 2)

	// Down-Left orientation (XY reflection)
	gameObject.orientation = 7 // Down-Left
	gameObject.addColoredRect(3, 6, 1, 1, 0)
	gameObject.addColoredRect(4, 5, 1, 1, 0)
	gameObject.addColoredRect(5, 4, 1, 1, 0)
	gameObject.addColoredRect(6, 3, 1, 1, 0)
	gameObject.addColoredRect(0, 3, 1, 1, 0)
	gameObject.addColoredRect(1, 2, 1, 1, 0)
	gameObject.addColoredRect(2, 1, 1, 1, 0)
	gameObject.addColoredRect(3, 0, 1, 1, 0)

	gameObject.addColoredRect(3, 1, 1, 1, 1)
	gameObject.addColoredRect(2, 2, 3, 1, 1)
	gameObject.addColoredRect(1, 3, 2, 1, 1)

	gameObject.addColoredRect(4, 3, 2, 1, 1)
	gameObject.addColoredRect(3, 4, 2, 1, 1)
	gameObject.addColoredRect(3, 5, 1, 1, 1)

	gameObject.addColoredRect(1, 5, 1, 1, 2)
	gameObject.addColoredRect(2, 4, 1, 1, 2)
	gameObject.addColoredRect(3, 3, 1, 1, 2)

	gameObject.orientation = 0
	gameObject.adjustBaseRect()

	if !local && (keyMap.exit != keyMap.shoot || joyMap.exitButton != joyMap.shootButton) {
		panic("Input assigned to remote player")
	}

	knownGameMap := GameMap{width: gameMap.width, height: gameMap.height, tiles: make([][]uint8, serverConfig.MapWidth)}
	for i := uint32(0); i < serverConfig.MapWidth; i++ {
		knownGameMap.tiles[i] = make([]uint8, serverConfig.MapHeight)
	}

	playersMutex.Lock()
	players[lastPlayerID] = &Player{
		playerColors:         thisPlayerColors,
		playerColorID:        thisPlayerColorIndex,
		keyMap:               keyMap,
		joyMap:               joyMap,
		joyStick:             joyStick,
		shields:              serverConfig.MaxShields,
		energy:               serverConfig.MaxEnergy,
		gameObject:           gameObject,
		local:                local,
		connection:           conn,
		playerID:             lastPlayerID,
		knownBulletParticles: make(map[uint32]*BulletParticle),
		knownBases:           make(map[uint32]*Base),
		knownPlayers:         make(map[uint32]*Player),
		knownBullets:         make(map[uint32]*Bullet),
		knownGameMap:         &knownGameMap,
	}
	playersMutex.Unlock()
	lastPlayerID++
	return lastPlayerID - 1
}