Merge pull request #2983 from hughbarney/master

Asteroids - increased ship, asteroids and font size

apps/astroid/ChangeLog

@@ -1,2 +1,5 @@
 0.02: Add "ram" keyword to allow 2v06 Espruino builds to cache function that needs to be fast
 0.03: Bangle 2 support
+0.04: Increase size of ship, asteroids and fonts for better readability
+0.05: improve collision detect for larger ship v astroid
+0.06: added, 7 point asteroid ploygon, made ship solid, rather than outline

apps/astroid/asteroids.js

@@ -18,14 +18,30 @@ if (process.env.HWVERSION==2) {
 }
 var W = g.getWidth();
 var H = g.getHeight();
+var SS = W/11;  // ship back length
+var SL = W/15;  // ship side length
+var AS = W/18;  // asteroid radius
+// radius of ship, assumed a circle inside equilateral traingle of side SS
+// r = a / root 3 where a is length of equilateral triangle
+var SR = SS / Math.sqrt(3);
+var AST = [ // asteroid polygon as X/Y pairs
+  0  ,-1.5,
+  1  ,   0,
+  0.5,   0,
+  0.5, 0.5,
+  0  ,   1,
+  -1 ,   0,
+  -1 ,  -1
+];
+
 g.clear().setFontAlign(0,-1);
 
 function newAst(x,y) {
   var a = {
     x:x,y:y,
     vx:Math.random()-0.5,
     vy:Math.random()-0.5,
-    rad:3+Math.random()*5
+    rad:3+Math.random()*AS
   };
   return a;
 }
@@ -41,8 +57,9 @@ var lastFrame;
 
 function gameStop() {
   running = false;
-  g.clear();
-  g.drawString("Game Over!",120,(H-6)/2);
+  g.setFont('Vector', W/7);
+  g.setFontAlign(0,0);
+  g.drawString("Game Over", W/2, H/2);
   g.flip();
 }
 
@@ -104,12 +121,13 @@ function onFrame() {
   }
 
   g.clear();
-  g.drawString(score,W-20,0);
+  g.setFont('Vector', 16);
+  g.drawString(score,W-20,16);
   var rs = Math.PI*0.8;
-  g.drawPoly([
-    ship.x+Math.cos(ship.r)*4, ship.y+Math.sin(ship.r)*4,
-    ship.x+Math.cos(ship.r+rs)*3, ship.y+Math.sin(ship.r+rs)*3,
-    ship.x+Math.cos(ship.r-rs)*3, ship.y+Math.sin(ship.r-rs)*3,
+  g.fillPoly([
+    ship.x+Math.cos(ship.r)*SS, ship.y+Math.sin(ship.r)*SS,
+    ship.x+Math.cos(ship.r+rs)*SL, ship.y+Math.sin(ship.r+rs)*SL,
+    ship.x+Math.cos(ship.r-rs)*SL, ship.y+Math.sin(ship.r-rs)*SL,
   ],true);
   var na = [];
   ammo.forEach(function(a) {
@@ -137,7 +155,10 @@ function onFrame() {
   ast.forEach(function(a) {
     a.x += a.vx*d;
     a.y += a.vy*d;
-    g.drawCircle(a.x, a.y, a.rad);
+    //g.drawCircle(a.x, a.y, a.rad);
+    // a 7 point asteroid with rough circle radius of scale 2
+    g.drawPoly(g.transformVertices(AST,{x:a.x,y:a.y,scale:a.rad,rotate:t}),true);
+
     if (a.x<0) a.x+=W;
     if (a.y<0) a.y+=H;
     if (a.x>=W) a.x-=W;
@@ -165,7 +186,7 @@ function onFrame() {
     var dx = a.x-ship.x;
     var dy = a.y-ship.y;
     var d = Math.sqrt(dx*dx+dy*dy);
-    if (d < a.rad) crashed = true;
+    if (d < a.rad + SR) crashed = true;
   });
   ast=na;
   if (!ast.length) {

apps/astroid/metadata.json

@@ -1,10 +1,10 @@
 {
   "id": "astroid",
   "name": "Asteroids!",
-  "version": "0.03",
+  "version": "0.06",
   "description": "Retro asteroids game",
   "icon": "asteroids.png",
-  "screenshots": [{"url":"screenshot_asteroids.png"}],
+  "screenshots": [{"url":"screenshot.png"}],
   "tags": "game",
   "supports": ["BANGLEJS","BANGLEJS2"],
   "allow_emulator": true,