From b84dff7f79b433d0453d96cd6e6064be57c22b6c Mon Sep 17 00:00:00 2001
From: Pierre Hubert <pierre.git@communiquons.org>
Date: Sun, 29 Mar 2020 16:59:56 +0200
Subject: [PATCH] Start to add ice

---
 levels/2.json | 16 ++++++++++++++++
 script.js     | 20 ++++++++++++++++++--
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/levels/2.json b/levels/2.json
index d3d9089..c8b485d 100644
--- a/levels/2.json
+++ b/levels/2.json
@@ -16,6 +16,22 @@
         [20, 23],
         [20, 21]
     ],
+
+    "ice": [
+        [15,15],
+        [15,16],
+        [15,17],
+        [15,18],
+        [16,15],
+        [16,16],
+        [16,17],
+        [16,18],
+        [17,15],
+        [17,16],
+        [17,17],
+        [17,18]
+    ],
+
     "randFoodFreq": 2000,
     "snake": [
         [4,2], [4,1], [3,1], [2,1]
diff --git a/script.js b/script.js
index 3514d52..9f17325 100644
--- a/script.js
+++ b/script.js
@@ -13,6 +13,8 @@ const EMPTY = i++;
 const SNAKE = i++;
 const WALL = i++;
 const FOOD = i++;
+const ICE = i++;
+const ICE_SNAKE = i++; // If the snake is on the ice
 delete i;
 
 /**
@@ -189,6 +191,11 @@ async function startGame(gameID) {
         map[f[0]-1][f[1]-1] = FOOD
     })
 
+    if(level.hasOwnProperty("ice"))
+        level.ice.forEach((f) => {
+            map[f[0]-1][f[1]-1] = ICE
+        })
+
     level.snake.forEach((s) => {
         map[s[0]-1][s[1]-1] = SNAKE
         snake.push([s[0]-1, s[1]-1]);
@@ -252,6 +259,7 @@ async function startGame(gameID) {
                     score++;
                     break;
                 
+                case ICE_SNAKE:
                 case SNAKE:
                 case WALL:
                     gameOver();
@@ -261,12 +269,12 @@ async function startGame(gameID) {
 
             // Push new snake position
             snake.push(newHead);
-            map[newHead[0]][newHead[1]] = SNAKE
+            map[newHead[0]][newHead[1]] = map[newHead[0]][newHead[1]] == ICE ? ICE_SNAKE : SNAKE
             
             // Remove the end of the snake if he has not eaten anything
             if(!increaseSize) {
                 const oldPos = snake.shift()
-                map[oldPos[0]][oldPos[1]] = EMPTY
+                map[oldPos[0]][oldPos[1]] = map[oldPos[0]][oldPos[1]] == ICE_SNAKE ? ICE : EMPTY
             }
 
             // Check if the user has won
@@ -319,6 +327,14 @@ async function startGame(gameID) {
                     case FOOD:
                         ctx.drawImage(imgApple, x*cell_width, y*cell_height, cell_width, cell_height);
                         break;
+                    
+                    case ICE:
+                    case ICE_SNAKE:
+                        ctx.fillStyle = "white";
+                        ctx.fillRect(x*cell_width, y*cell_height, cell_width, cell_height)
+
+                        if(map[y][x] == ICE)
+                            break;
 
                     case SNAKE:
                         ctx.drawImage(imgSnakeBody, x*cell_width, y*cell_height, cell_width, cell_height);