Update velocity.js

mods/velocity.js

@@ -142,4 +142,93 @@ drawPixels = function(forceTick=false) {
 }
 
 
-})
+})
+
+explodeAt = function(x,y,radius,fire="fire") {
+    // if fire contains , split it into an array
+    if (fire.indexOf(",") !== -1) {
+        fire = fire.split(",");
+    }
+    var coords = circleCoords(x,y,radius);
+    var power = radius/10;
+    //for (var p = 0; p < Math.round(radius/10+1); p++) {
+    for (var i = 0; i < coords.length; i++) {
+        // damage value is based on distance from x and y
+        var damage = Math.random() + (Math.floor(Math.sqrt(Math.pow(coords[i].x-x,2) + Math.pow(coords[i].y-y,2)))) / radius;
+        // invert
+        damage = 1 - damage;
+        if (damage < 0) { damage = 0; }
+        damage *= power;
+        if (isEmpty(coords[i].x,coords[i].y)) {
+            // create smoke or fire depending on the damage if empty
+            if (damage < 0.02) { } // do nothing
+            else if (damage < 0.2) {
+                createPixel("smoke",coords[i].x,coords[i].y);
+            }
+            else {
+                // if fire is an array, choose a random item
+                if (Array.isArray(fire)) {
+                    createPixel(fire[Math.floor(Math.random() * fire.length)],coords[i].x,coords[i].y);
+                }
+                else {
+                    createPixel(fire,coords[i].x,coords[i].y);
+                }
+            }
+        }
+        else if (!outOfBounds(coords[i].x,coords[i].y)) {
+            // damage the pixel
+            var pixel = pixelMap[coords[i].x][coords[i].y];
+            var info = elements[pixel.element];
+            if (info.hardness) { // lower damage depending on hardness(0-1)
+                if (info.hardness < 1) {
+                    damage = damage * ((1 - info.hardness)*10);
+                }
+                else { damage = 0; }
+            }
+            if (damage > 0.9) {
+                if (Array.isArray(fire)) {
+                    var newfire = fire[Math.floor(Math.random() * fire.length)];
+                }
+                else {
+                    var newfire = fire;
+                }
+                changePixel(pixel,newfire);
+                continue;
+            }
+            else if (damage > 0.25) {
+                if (info.breakInto) {
+                    // if it is an array, choose a random item, else just use the value
+                    if (Array.isArray(info.breakInto)) {
+                        var result = info.breakInto[Math.floor(Math.random() * info.breakInto.length)];
+                    }
+                    else {
+                        var result = info.breakInto;
+                    }
+                    // change the pixel to the result
+                    changePixel(pixel,result);
+                    continue;
+                }
+                else {
+                    if (Array.isArray(fire)) {
+                        var newfire = fire[Math.floor(Math.random() * fire.length)];
+                    }
+                    else {
+                        var newfire = fire;
+                    }
+                    changePixel(pixel,newfire);
+                    continue;
+                }
+            }
+            if (damage > 0.75 && info.burn) {
+                pixel.burning = true;
+                pixel.burnStart = pixelTicks;
+            }
+            pixel.temp += damage*radius*power;
+            pixelTempCheck(pixel);
+            // set the pixel.vx and pixel.vy depending on the angle and power
+            var angle = Math.atan2(pixel.y-y,pixel.x-x);
+            pixel.vx = Math.floor((pixel.vx|0) + Math.cos(angle) * (radius * power/10));
+            pixel.vy = Math.floor((pixel.vy|0) + Math.sin(angle) * (radius * power/10));
+        }
+    }
+}