From ff95308e299eadf80cd5767015bd4917608677fb Mon Sep 17 00:00:00 2001
From: Ben <playsplane@gmail.com>
Date: Mon, 15 Oct 2018 18:02:12 +0100
Subject: [PATCH] Gravity:tm:

---
 JavaScript/Snetris/index.js | 60 ++++++++++++++++++++++++++++++-------
 1 file changed, 49 insertions(+), 11 deletions(-)

diff --git a/JavaScript/Snetris/index.js b/JavaScript/Snetris/index.js
index 01903c4..56b9861 100644
--- a/JavaScript/Snetris/index.js
+++ b/JavaScript/Snetris/index.js
@@ -31,7 +31,6 @@ class Apple {
     
     update() {
         if (ActiveSnake.head.x == this.pos.x && ActiveSnake.head.y == this.pos.y) {
-            // freeze snake and return state
             return 'collide';
         }
     }
@@ -102,9 +101,43 @@ class Block {
     constructor(tail) {
         this.blocks = tail;
         this.falling = true;
-        this.pixelPos;
-        this.targetGamePos;
-        this.targetPixelPos;
+        this.pixelPos = {x: tail[0].x * BLOCK_SIZE.x, y: tail[0].y * BLOCK_SIZE.y};
+        this.lastPixelPos = {x: 0, y: 0};
+        this.targetGamePos = {x: 6, y: 11};
+        this.targetPixelPos = {x: 6 * BLOCK_SIZE.x, y: 11 * BLOCK_SIZE.y};
+    
+        this.velocity = 0;
+        this.gravity = 5.81;
+    }
+
+    fall() {
+        this.lastPixelPos = this.pixelPos;
+        if (this.falling) {
+            this.velocity += this.gravity;
+            this.pixelPos.y += this.velocity;
+        }
+        if (this.pixelPos.y >= this.targetPixelPos.y) {
+            this.falling = false;
+            this.pixelPos.y = this.targetPixelPos.y;
+        }
+
+        // for (peice of this.blocks) {
+
+        // }
+    }
+
+    draw() {
+        if (this.falling) {
+            ctx.fillStyle = BACKGROUND_COLOUR;
+            ctx.fillRect(this.lastPixelPos.x, this.lastPixelPos.y, BLOCK_SIZE.x, BLOCK_SIZE.y);
+            ctx.fillStyle = SNAKE_COLOUR;
+            ctx.fillRect(this.pixelPos.x, this.pixelPos.y, BLOCK_SIZE.x, BLOCK_SIZE.y);
+        } else {
+            GameGrid[this.targetGamePos.x][this.targetGamePos.y] = 1;
+            // for (let i = 0; i < this.tail.length; i++) {
+            //     GameGrid[this.tail[i].x][this.tail[i].y] = 1;
+            // }
+        }
     }
 }
 
@@ -136,7 +169,12 @@ function gameLoop() {
             ActiveApple = new Apple();
             ActiveSnake = new Snake();
         }
-        
+
+        for (block of Blocks) {
+            if (!block.falling) {
+                block.draw();
+            }
+        }
         ActiveSnake.draw();
         ActiveApple.draw();
         draw();
@@ -145,15 +183,15 @@ function gameLoop() {
 
 function animationLoop() {
     if (!stop) {
-        // loop through Boxes and if a box is in the falling
-        // state, then apply animation
+        for (block of Blocks) {
+            if (block.falling) {
+                block.fall();
+                block.draw();
+            }
+        }
     }
 }
 
-function drawAnimation() {
-    
-}
-
 function draw() {
     for (let i = 0; i < GAME_SIZE.x; i++) {
         for (let j = 0; j < GAME_SIZE.y; j++) {