1 files changed, 79 insertions, 0 deletions
diff --git a/client/src/logic/players.ts b/client/src/logic/players.ts
new file mode 100644
index 0000000..ebe469f
--- /dev/null
+++ b/client/src/logic/players.ts
@@ -0,0 +1,79 @@
+import { GameState, Input, Key, Rotation } from "../types.js"
+
+const canPlayerJoin = (data: GameState) => {
+
+    // lobby has already started
+    if (data.started) {
+        return false
+    }
+
+    // lobby full
+    if (Object.keys(data.players).length >= 4) {
+        return false
+    }
+
+    return true
+
+}
+
+export const updatePlayers = (data: GameState, input: Input) => {
+   
+    let startPressed = false;
+
+    for(const added of input.added || []) {
+        
+        if (!canPlayerJoin(data)) {
+            continue
+        }
+
+		console.log("added", added);
+
+        data.input[added] = Key.NOTHING
+
+		data.players[added] ||= {
+			pos: {x: 1, y: 1},
+            inputRotation: Rotation.EAST,
+            moveRotation: Rotation.EAST,
+            moving: false,
+		};
+
+	}
+
+	for(const id in input.players) {
+
+		if(!input.players[id]) {
+			continue;
+		}
+
+		if(id in data.players && input.players[id].name !== undefined) {
+
+			let name = input.players[id].name;
+			name = name.substring(0, 16);
+			
+			data.players[id] = {
+				...data.players[id],
+				name,
+			};
+            
+		}
+
+		startPressed ||= input.players[id].start;
+        if (input.players[id].key)
+		    data.input[id] = input.players[id].key
+
+	}
+
+    for(const removed of input.removed || []) {
+		console.log("removed", removed);
+		delete data.input[removed];
+		delete data.players[removed];
+
+        let element_id = 'span' + removed 
+        let element = document.getElementById(element_id)
+        if (element !== null && element !== undefined) element.remove()
+	}
+
+    return startPressed
+
+}
+