center text on screen

src/main.zig

@@ -6,9 +6,9 @@ test {
     _ = g;
 }
 
-pub fn main() anyerror!void {
+pub fn main() !void {
     const allocator = std.heap.page_allocator;
-    const scaleFactor = 40;
+    const scaleFactor = 30;
 
     var game = try g.Game.create(allocator);
     defer game.deinit();
@@ -23,6 +23,12 @@ pub fn main() anyerror!void {
     const fastTickInterval: f32 = tickInterval / 3.0;
     var tickTimer: f32 = 0;
 
+    const fontSize = 50;
+    const gameOverText = "Game Over!";
+    const gameOverTextWidth = rl.measureText(gameOverText, fontSize);
+    const youWinText = "You Win!";
+    const youWinTextWidth = rl.measureText(youWinText, fontSize);
+
     while (!rl.windowShouldClose()) {
         const deltaTime = rl.getFrameTime();
         tickTimer += deltaTime;
@@ -63,15 +69,16 @@ pub fn main() anyerror!void {
         rl.drawRectangle(game.food[0] * scaleFactor, game.food[1] * scaleFactor, scaleFactor, scaleFactor, .red);
 
         // Snake
-        for (game.body.items) |part| {
-            rl.drawRectangle(part[0] * scaleFactor, part[1] * scaleFactor, scaleFactor, scaleFactor, .green);
+        for (game.body.items, 0..) |part, i| {
+            const color: rl.Color = if (i == 0) .green else .dark_green;
+            rl.drawRectangle(part[0] * scaleFactor, part[1] * scaleFactor, scaleFactor, scaleFactor, color);
         }
 
         if (game.state == g.State.lost) {
-            rl.drawText("Game Over!", 150, 200, 20, .light_gray);
+            rl.drawText(gameOverText, @divTrunc(screenWidth - gameOverTextWidth, 2), @divTrunc(screenHeight - fontSize, 2), fontSize, .dark_gray);
         }
         if (game.state == g.State.won) {
-            rl.drawText("You Win!", 150, 200, 20, .light_gray);
+            rl.drawText(youWinText, @divTrunc(screenWidth - youWinTextWidth, 2), @divTrunc(screenHeight - fontSize, 2), fontSize, .dark_gray);
         }
     }
 }