From f1c31316a12a76c9b9af4b40e605eb040d7dbd43 Mon Sep 17 00:00:00 2001
From: Maksymilian Jopek <maks@jopek.eu>
Date: Tue, 28 Feb 2023 15:44:44 +0100
Subject: v1.0.0

---
 battleshipFiles/battleshipUserFunctions.js | 97 ++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 battleshipFiles/battleshipUserFunctions.js

(limited to 'battleshipFiles/battleshipUserFunctions.js')

diff --git a/battleshipFiles/battleshipUserFunctions.js b/battleshipFiles/battleshipUserFunctions.js
new file mode 100644
index 0000000..86cb12f
--- /dev/null
+++ b/battleshipFiles/battleshipUserFunctions.js
@@ -0,0 +1,97 @@
+function showUserShipPosition(givenTr, givenTrNumber, givenTd, givenTdNumber, player)
+{
+	// Preventing ability to place all ships on one td
+	window.vars.wasShipPlaced = false;
+	
+	if(givenTr == null)
+	{
+		if(typeof window.vars.givenTr === "undefined")
+			throw "window.vars.givenTr === undefined";
+	}
+	else
+	{
+		window.vars.givenTr = givenTr;
+		window.vars.givenTd = givenTd;
+		window.vars.givenTrNumber = givenTrNumber;
+		window.vars.givenTdNumber = givenTdNumber;
+	}
+	
+	let ship = window.vars.selectedShip.children.length;
+	let newShip = ship;
+	
+	if(window.vars.selectedTd === undefined)
+		window.vars.selectedTd = new Array(MAP_SIZE);
+	
+	clearUserShipPosition();
+	
+	let color;
+	if(checkPositionForShip(givenTrNumber + 1, givenTdNumber + 1, window.vars.shipDirection, ship, player))
+	{
+		color = "bg-success";
+		window.vars.isPlaceable = true;
+		//givenTd.onclick = () => putShipOnGameMap(player, givenTdNumber + 1, givenTrNumber + 1, window.vars.shipDirection, ship, true);
+	}
+	else
+	{
+		color = "bg-danger";
+		window.vars.isPlaceable = false;
+	}
+	
+	if(window.vars.shipDirection === "vertically")
+	{
+		if(ship + givenTrNumber > MAP_SIZE)
+			newShip = MAP_SIZE - givenTrNumber;
+		
+		for(let i = givenTrNumber - (ship - newShip); i < givenTrNumber + newShip; i++)
+		{
+			let td = givenTr.parentNode.children[i].children[givenTdNumber];
+			window.vars.selectedTd[i] = [td, td.className];
+			td.className = color;
+		}
+	}
+	else if(window.vars.shipDirection === "horizontally")
+	{
+		if(ship + givenTdNumber > MAP_SIZE)
+			newShip = MAP_SIZE - givenTdNumber;
+		
+		for(let i = givenTdNumber - (ship - newShip); i < givenTdNumber + newShip; i++)
+		{
+			window.vars.selectedTd[i] = [givenTr.children[i], givenTr.children[i].className];
+			givenTr.children[i].className = color;
+		}
+	}
+	// }
+}
+
+function clearUserShipPosition()
+{
+	//	Clear selection from table, used with onMouseLeave
+	window.vars.selectedTd.forEach(oldTd => {
+		if(oldTd !== undefined)
+			oldTd[0].className = oldTd[1];
+	});
+}
+
+function checkPositionForShip(x, y, direction, ship, player)
+{
+	// Changing x and y to match them with start of ship shown with onmouseenter
+	[x, y] = correctXY(x, y, ship, direction);
+	
+	if(direction === "vertically")
+	{
+		for(let i = -1; i <= ship; i++)
+			for(let j = -1; j < 2; j++)
+				if(player.gameMap[x + i][y + j] === 1 || player.gameMap[x + i][y + j] === -1)
+					return false;
+	}
+	else if(direction === "horizontally")
+	{
+		for(let i = -1; i <= ship; i++)
+			for(let j = -1; j < 2; j++)
+				if(player.gameMap[x + j][y + i] === 1 || player.gameMap[x + j][y + i] === -1)
+					return false;
+	}
+	
+	return true;
+}
+
-- 
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