gravity.js

a mod for sandboxels that adds a gravity block were you can create plannets with and much more!

gravity.js

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+elements.gravity_point = {
+    color: "#FFD700", // Goudkleurig
+    behavior: behaviors.STURDYPOWDER,
+    category: "special",
+    state: "solid",
+    density: 5000,
+    max_gravity_distance: 100, // Bereik van zwaartekracht
+    gravity_strength: 1, // Kracht van zwaartekracht
+    
+    tick: function(pixel) {
+        for (var x = -pixel.max_gravity_distance; x <= pixel.max_gravity_distance; x++) {
+            for (var y = -pixel.max_gravity_distance; y <= pixel.max_gravity_distance; y++) {
+                var nx = pixel.x + x;
+                var ny = pixel.y + y;
+
+                if (!isEmpty(nx, ny, true)) {
+                    var npixel = pixelMap[nx][ny];
+
+                    if (npixel && npixel.element !== "gravity_point") {
+                        var dx = nx - pixel.x;
+                        var dy = ny - pixel.y;
+                        var distance = Math.sqrt(dx * dx + dy * dy);
+
+                        if (distance < 1) distance = 1; // Voorkom delen door 0
+                        if (distance <= pixel.max_gravity_distance) {
+                            var force = (pixel.gravity_strength * 100) / (distance * distance);
+                            var angle = Math.atan2(dy, dx);
+                            var vx = -Math.cos(angle) * force;
+                            var vy = -Math.sin(angle) * force;
+
+                            // Voeg snelheid toe aan objecten
+                            npixel.vx = (npixel.vx || 0) + vx;
+                            npixel.vy = (npixel.vy || 0) + vy;
+                        }
+                    }
+                }
+            }
+        }
+    }
+};