tweak world & physics constants a bit

GitOrigin-RevId: 8921482b3f

Jumpy.Shared/Player.cs

@@ -14,9 +14,9 @@ namespace Jumpy {
     private const int spriteSize = 48;
     private const int spriteWidth = 7;
     private const int bottomPadding = 1;
-    private const int moveSpeed = 200;
-    private const int jumpSpeed = 600;
-    private const int gravity = 2000;
+    private const int moveSpeed = 150;
+    private const int jumpSpeed = 500;
+    private const int gravity = 1500;
 
     private Point position = new Point(Camera.Width / 2, 10);
     private Facing facing = Facing.Right;

Jumpy.Shared/World.cs

@@ -62,14 +62,17 @@ namespace Jumpy {
       for (int j = 0; j < height; j++) {
         for (int i = 0; i < width; i++) {
           Terrain terrain;
-          if (j < height - 3) {
+          if (j < height - 2) {
             terrain = Terrain.Empty;
-          } else if (j == height - 3) {
+          } else if (j == height - 2) {
             terrain = Terrain.Grass;
           } else {
             terrain = Terrain.Rock;
           }
-          if (j == 4 && 11 < i && i < 15) {
+          if (j == 6 && 11 < i && i < 15) {
+            terrain = Terrain.Grass;
+          }
+          if (j == 3 && 15 < i && i < 19) {
             terrain = Terrain.Grass;
           }
           var position = new Rectangle(i * TileSize, j * TileSize, TileSize, TileSize);