project 9 checkpoint

- no more compiler error
- but still some bugs:
    - tiles get stuck
    - segment error (possibly due to deep copy?)

6 files changed, 1366 insertions, 47 deletions

diff --git a/projects/09/K/Board.jack b/projects/09/K/Board.jack
index 9e3678e..c465f95 100644
--- a/projects/09/K/Board.jack
+++ b/projects/09/K/Board.jack
@@ -3,78 +3,106 @@ class Board {
     field int nTurn;
 
     constructor Board new() {
-        let grid = Array.new(4);
         var int i, j;
+        var Array t;
+        let grid = Array.new(4);
         let i = 0;
         while (i < 4) {
             let j = 0;
             let grid[i] = Array.new(4);
+            let t = grid[i];
             while (j < 4) {
-                let grid[i][j] = 32;
+                let t[j] = 32;
+                let j = j + 1;
             }
             let i = i + 1;
         }
-        let grid[0][0] = 65;
+        let t = grid[0];
+        let t[0] = 65;
         let nTurn = 0;
         return this;
     }
 
     method void arrange(Array xs, boolean isHorizontal) {
         if (isHorizontal) {
-            let grid = copy(xs)
+            do deepcopy(xs, grid);
         } else {
-            let grid = transpose(xs)
+            do transpose(xs, grid);
         }
+        do dispose4(xs);
+        return;
     }
 
 
-    method Array copy(Array xs) {
-        var Array ys;
-        let ys = Array.new(4);
+    method void copy(Array xs, Array ys) {
         var int i;
         let i = 0;
         while (i < 4) {
             let ys[i] = xs[i];
             let i = i + 1;
         }
-        return ys;
+        return;
     }
 
-    method Array deepcopy(Array xs) {
-        var Array ys;
-        let ys = Array.new(4);
+    method void deepcopy(Array xs, Array ys) {
         var int i;
         let i = 0;
         while (i < 4) {
-            let ys[i] = copy(xs[i]);
+            do copy(xs[i], ys[i]);
             let i = i + 1;
         }
-        return ys;
+        return;
     }
 
-    mothod Array transpose(Array xs){
-        var Array ys;
+    method void transpose(Array xs, Array ys) {
         var int i, j;
+        var Array t, s;
         let i = 0;
-        let ys = Array.new(4);
         while (i < 4) {
-            let ys[i] = Array.new(4)
             let j = 0;
+            let t = ys[i];
             while (j < 4) {
-                let ys[i][j] = xs[j][i];
+                let s = xs[j];
+                let t[j] = s[i];
                 let j = j + 1;
             }
             let i = i + 1;
         }
-        return ys;
+        return;
+    }
+
+    method void dispose4(Array xs){
+        var int i;
+        var Array t;
+        let i = 0;
+        while (i < 4) {
+            let t = xs[i];
+            do t.dispose();
+            let i = i + 1;
+        }
+        do xs.dispose();
+        return;
+    }
+
+    method Array new4(){
+        var Array xs;
+        var int i;
+        let xs = Array.new(4);
+        let i = 0;
+        while (i < 4) {
+            let xs[i] = Array.new(4);
+            let i = i + 1;
+        }
+        return xs;
     }
 
-    method Array getStrip(boolean isHorizontal){
+    method Array getStrips(boolean isHorizontal){
         var Array xs;
+        let xs = new4();
         if (isHorizontal) {
-            let xs = deepcopy(grid);
+            do deepcopy(grid, xs);
         } else {
-            let xs = transpose(grid);
+            do transpose(grid, xs);
         }
         return xs;
     }
@@ -83,9 +111,9 @@ class Board {
         var int i, j;
         let i = 0;
         let j = 0;
-        if (left = true) {
+        if (left) {
             while (i < 4) {
-                if (xs[i] > 96) {
+                if (xs[i] > 64) {
                     let xs[j] = xs[i];
                     let j = j + 1;
                 }
@@ -97,7 +125,7 @@ class Board {
             }
         } else {
             while (i < 4) {
-                if (xs[3 - i] > 96) {
+                if (xs[3 - i] > 64) {
                     let xs[3 - j] = xs[3 - i];
                     let j = j + 1;
                 }
@@ -112,8 +140,8 @@ class Board {
     }
 
     method Array reduce(Array xs, boolean left){
-        if ((xs[0] = xs[1]) & (xs[2] = xs[3])) {
-            if (left = true) {
+        if ((xs[0] = xs[1]) & (xs[2] = xs[3]) & (xs[0] > 64) & (xs[2] > 64)) {
+            if (left) {
                 let xs[0] = xs[0] + 1;
                 let xs[1] = xs[2] + 1; 
                 let xs[2] = 32;
@@ -126,8 +154,8 @@ class Board {
             }
             return xs;
         }
-        if (xs[0] = xs[1]) {
-            if (left = true) {
+        if ((xs[0] = xs[1]) & (xs[0] > 64)) {
+            if (left) {
                 let xs[0] = xs[0] + 1;
                 let xs[1] = xs[2];
                 let xs[2] = xs[3];
@@ -138,8 +166,8 @@ class Board {
             }
             return xs;
         }
-        if (xs[2] = xs[3]) {
-            if (left = true) {
+        if ((xs[2] = xs[3]) & (xs[2] > 64)) {
+            if (left) {
                 let xs[2] = xs[2] + 1;
                 let xs[3] = 32;
             } else {
@@ -150,14 +178,14 @@ class Board {
             }
             return xs;
         }
-        if (xs[1] = xs[2]) {
-            if (left = true) {
+        if ((xs[1] = xs[2]) & (xs[1] > 64)) {
+            if (left) {
                 let xs[1] = xs[1] + 1;
                 let xs[2] = xs[3];
                 let xs[3] = 32;
             } else {
                 let xs[2] = xs[2] + 1;
-                let xs[1] = xs[0]
+                let xs[1] = xs[0];
                 let xs[0] = 32;
             }
             return xs;
@@ -166,43 +194,47 @@ class Board {
     }
 
     method void addTile(){
-        var int x, y;
+        var int x, y, r, c;
         var char z;
+        var Array t;
         let x = nTurn;
         let y = 23 * x * x + 79;
         let x = y - (y / 16 * 16);
         let r = x / 4;
         let c = x - (r * 4);
-        let z = 97;
-        while (grid[r][c] > 96) {
+        let z = 65;
+        let t = grid[r];
+        while (t[c] > 64) {
             let y = 23 * x * x + 79;
             let x = y - (y / 16 * 16);
             let r = x / 4;
             let c = x - (r * 4);
-            let z = 195 - z;
+            let z = 131 - z;
+            let t = grid[r];
         }
-        let grid[r][c] = z;
+        let t[c] = z;
         return;
     }
 
     method void transform(char dir){
         var boolean isHorizontal, left;
-        if ((dir = 0) or (dir = 1)) {
+        var Array xs;
+        var int i;
+        if ((dir = 0) | (dir = 1)) {
             let left = true;
         } else {
             let left = false;
         }
-        if ((dir = 0) or (dir = 2)) {
+        if ((dir = 0) | (dir = 2)) {
             let isHorizontal = true;
         } else {
             let isHorizontal = false;
         }
-        var Array xs;
-        let xs = getStrip(isHorizontal);
-        var int i;
+        let xs = getStrips(isHorizontal);
         let i = 0;
         while (i < 4) {
-            xs[i] = reduce(align(xs[i], left), left);
+            let xs[i] = reduce(align(xs[i], left), left);
+            let i = i + 1;
         }
         do arrange(xs, isHorizontal);
         return;
@@ -217,21 +249,25 @@ class Board {
 
     method void draw(){
         var int r, c, i, j;
+        var Array t;
         let r = 9;
         let c = 30;
         let i = 0;
         while (i < 4) {
             let j = 0;
             do Output.moveCursor(r + i, c);
+            let t = grid[i];
             while (j < 4) {
-                do Output.printChar(grid[i][j]);
+                do Output.printChar(t[j]);
                 let j = j + 1;
             }
             let i = i + 1;
         }
+        return;
     }
 
     method void dispose() {
         do Memory.deAlloc(this);
+        return;
     }
 }
diff --git a/projects/09/K/Board.vm b/projects/09/K/Board.vm
new file mode 100644
index 0000000..398171f
--- /dev/null
+++ b/projects/09/K/Board.vm
@@ -0,0 +1,1155 @@
+function Board.new 3
+push constant 2
+call Memory.alloc 1
+pop pointer 0
+push constant 4
+call Array.new 1
+pop this 0
+push constant 0
+pop local 0
+label WHILE_EXP0
+push local 0
+push constant 4
+lt
+not
+if-goto WHILE_END0
+push constant 0
+pop local 1
+push local 0
+push this 0
+add
+push constant 4
+call Array.new 1
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 0
+push this 0
+add
+pop pointer 1
+push that 0
+pop local 2
+label WHILE_EXP1
+push local 1
+push constant 4
+lt
+not
+if-goto WHILE_END1
+push local 1
+push local 2
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 1
+push constant 1
+add
+pop local 1
+goto WHILE_EXP1
+label WHILE_END1
+push local 0
+push constant 1
+add
+pop local 0
+goto WHILE_EXP0
+label WHILE_END0
+push constant 0
+push this 0
+add
+pop pointer 1
+push that 0
+pop local 2
+push constant 0
+push local 2
+add
+push constant 65
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 0
+pop this 1
+push pointer 0
+return
+function Board.arrange 0
+push argument 0
+pop pointer 0
+push argument 2
+if-goto IF_TRUE0
+goto IF_FALSE0
+label IF_TRUE0
+push pointer 0
+push argument 1
+push this 0
+call Board.deepcopy 3
+pop temp 0
+goto IF_END0
+label IF_FALSE0
+push pointer 0
+push argument 1
+push this 0
+call Board.transpose 3
+pop temp 0
+label IF_END0
+push pointer 0
+push argument 1
+call Board.dispose4 2
+pop temp 0
+push constant 0
+return
+function Board.copy 1
+push argument 0
+pop pointer 0
+push constant 0
+pop local 0
+label WHILE_EXP0
+push local 0
+push constant 4
+lt
+not
+if-goto WHILE_END0
+push local 0
+push argument 2
+add
+push local 0
+push argument 1
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 0
+push constant 1
+add
+pop local 0
+goto WHILE_EXP0
+label WHILE_END0
+push constant 0
+return
+function Board.deepcopy 1
+push argument 0
+pop pointer 0
+push constant 0
+pop local 0
+label WHILE_EXP0
+push local 0
+push constant 4
+lt
+not
+if-goto WHILE_END0
+push pointer 0
+push local 0
+push argument 1
+add
+pop pointer 1
+push that 0
+push local 0
+push argument 2
+add
+pop pointer 1
+push that 0
+call Board.copy 3
+pop temp 0
+push local 0
+push constant 1
+add
+pop local 0
+goto WHILE_EXP0
+label WHILE_END0
+push constant 0
+return
+function Board.transpose 4
+push argument 0
+pop pointer 0
+push constant 0
+pop local 0
+label WHILE_EXP0
+push local 0
+push constant 4
+lt
+not
+if-goto WHILE_END0
+push constant 0
+pop local 1
+push local 0
+push argument 2
+add
+pop pointer 1
+push that 0
+pop local 2
+label WHILE_EXP1
+push local 1
+push constant 4
+lt
+not
+if-goto WHILE_END1
+push local 1
+push argument 1
+add
+pop pointer 1
+push that 0
+pop local 3
+push local 1
+push local 2
+add
+push local 0
+push local 3
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 1
+push constant 1
+add
+pop local 1
+goto WHILE_EXP1
+label WHILE_END1
+push local 0
+push constant 1
+add
+pop local 0
+goto WHILE_EXP0
+label WHILE_END0
+push constant 0
+return
+function Board.dispose4 2
+push argument 0
+pop pointer 0
+push constant 0
+pop local 0
+label WHILE_EXP0
+push local 0
+push constant 4
+lt
+not
+if-goto WHILE_END0
+push local 0
+push argument 1
+add
+pop pointer 1
+push that 0
+pop local 1
+push local 1
+call Array.dispose 1
+pop temp 0
+push local 0
+push constant 1
+add
+pop local 0
+goto WHILE_EXP0
+label WHILE_END0
+push argument 1
+call Array.dispose 1
+pop temp 0
+push constant 0
+return
+function Board.new4 2
+push argument 0
+pop pointer 0
+push constant 4
+call Array.new 1
+pop local 0
+push constant 0
+pop local 1
+label WHILE_EXP0
+push local 1
+push constant 4
+lt
+not
+if-goto WHILE_END0
+push local 1
+push local 0
+add
+push constant 4
+call Array.new 1
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 1
+push constant 1
+add
+pop local 1
+goto WHILE_EXP0
+label WHILE_END0
+push local 0
+return
+function Board.getStrips 1
+push argument 0
+pop pointer 0
+push pointer 0
+call Board.new4 1
+pop local 0
+push argument 1
+if-goto IF_TRUE0
+goto IF_FALSE0
+label IF_TRUE0
+push pointer 0
+push this 0
+push local 0
+call Board.deepcopy 3
+pop temp 0
+goto IF_END0
+label IF_FALSE0
+push pointer 0
+push this 0
+push local 0
+call Board.transpose 3
+pop temp 0
+label IF_END0
+push local 0
+return
+function Board.align 2
+push argument 0
+pop pointer 0
+push constant 0
+pop local 0
+push constant 0
+pop local 1
+push argument 2
+if-goto IF_TRUE0
+goto IF_FALSE0
+label IF_TRUE0
+label WHILE_EXP0
+push local 0
+push constant 4
+lt
+not
+if-goto WHILE_END0
+push local 0
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 64
+gt
+if-goto IF_TRUE1
+goto IF_FALSE1
+label IF_TRUE1
+push local 1
+push argument 1
+add
+push local 0
+push argument 1
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 1
+push constant 1
+add
+pop local 1
+label IF_FALSE1
+push local 0
+push constant 1
+add
+pop local 0
+goto WHILE_EXP0
+label WHILE_END0
+label WHILE_EXP1
+push local 1
+push constant 4
+lt
+not
+if-goto WHILE_END1
+push local 1
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 1
+push constant 1
+add
+pop local 1
+goto WHILE_EXP1
+label WHILE_END1
+goto IF_END0
+label IF_FALSE0
+label WHILE_EXP2
+push local 0
+push constant 4
+lt
+not
+if-goto WHILE_END2
+push constant 3
+push local 0
+sub
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 64
+gt
+if-goto IF_TRUE2
+goto IF_FALSE2
+label IF_TRUE2
+push constant 3
+push local 1
+sub
+push argument 1
+add
+push constant 3
+push local 0
+sub
+push argument 1
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 1
+push constant 1
+add
+pop local 1
+label IF_FALSE2
+push local 0
+push constant 1
+add
+pop local 0
+goto WHILE_EXP2
+label WHILE_END2
+label WHILE_EXP3
+push local 1
+push constant 4
+lt
+not
+if-goto WHILE_END3
+push constant 3
+push local 1
+sub
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 1
+push constant 1
+add
+pop local 1
+goto WHILE_EXP3
+label WHILE_END3
+label IF_END0
+push argument 1
+return
+function Board.reduce 0
+push argument 0
+pop pointer 0
+push constant 0
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+push argument 1
+add
+pop pointer 1
+push that 0
+eq
+push constant 2
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 3
+push argument 1
+add
+pop pointer 1
+push that 0
+eq
+and
+push constant 0
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 64
+gt
+and
+push constant 2
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 64
+gt
+and
+if-goto IF_TRUE0
+goto IF_FALSE0
+label IF_TRUE0
+push argument 2
+if-goto IF_TRUE1
+goto IF_FALSE1
+label IF_TRUE1
+push constant 0
+push argument 1
+add
+push constant 0
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+add
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 1
+push argument 1
+add
+push constant 2
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+add
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 2
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 3
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+goto IF_END1
+label IF_FALSE1
+push constant 3
+push argument 1
+add
+push constant 3
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+add
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 2
+push argument 1
+add
+push constant 1
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+add
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 1
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 0
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+label IF_END1
+push argument 1
+return
+label IF_FALSE0
+push constant 0
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+push argument 1
+add
+pop pointer 1
+push that 0
+eq
+push constant 0
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 64
+gt
+and
+if-goto IF_TRUE2
+goto IF_FALSE2
+label IF_TRUE2
+push argument 2
+if-goto IF_TRUE3
+goto IF_FALSE3
+label IF_TRUE3
+push constant 0
+push argument 1
+add
+push constant 0
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+add
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 1
+push argument 1
+add
+push constant 2
+push argument 1
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 2
+push argument 1
+add
+push constant 3
+push argument 1
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 3
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+goto IF_END3
+label IF_FALSE3
+push constant 1
+push argument 1
+add
+push constant 1
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+add
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 0
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+label IF_END3
+push argument 1
+return
+label IF_FALSE2
+push constant 2
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 3
+push argument 1
+add
+pop pointer 1
+push that 0
+eq
+push constant 2
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 64
+gt
+and
+if-goto IF_TRUE4
+goto IF_FALSE4
+label IF_TRUE4
+push argument 2
+if-goto IF_TRUE5
+goto IF_FALSE5
+label IF_TRUE5
+push constant 2
+push argument 1
+add
+push constant 2
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+add
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 3
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+goto IF_END5
+label IF_FALSE5
+push constant 3
+push argument 1
+add
+push constant 3
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+add
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 2
+push argument 1
+add
+push constant 1
+push argument 1
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 1
+push argument 1
+add
+push constant 0
+push argument 1
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 0
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+label IF_END5
+push argument 1
+return
+label IF_FALSE4
+push constant 1
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 2
+push argument 1
+add
+pop pointer 1
+push that 0
+eq
+push constant 1
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 64
+gt
+and
+if-goto IF_TRUE6
+goto IF_FALSE6
+label IF_TRUE6
+push argument 2
+if-goto IF_TRUE7
+goto IF_FALSE7
+label IF_TRUE7
+push constant 1
+push argument 1
+add
+push constant 1
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+add
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 2
+push argument 1
+add
+push constant 3
+push argument 1
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 3
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+goto IF_END7
+label IF_FALSE7
+push constant 2
+push argument 1
+add
+push constant 2
+push argument 1
+add
+pop pointer 1
+push that 0
+push constant 1
+add
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 1
+push argument 1
+add
+push constant 0
+push argument 1
+add
+pop pointer 1
+push that 0
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 0
+push argument 1
+add
+push constant 32
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+label IF_END7
+push argument 1
+return
+label IF_FALSE6
+push argument 1
+return
+function Board.addTile 6
+push argument 0
+pop pointer 0
+push this 1
+pop local 0
+push constant 23
+push local 0
+call Math.multiply 2
+push local 0
+call Math.multiply 2
+push constant 79
+add
+pop local 1
+push local 1
+push local 1
+push constant 16
+call Math.divide 2
+push constant 16
+call Math.multiply 2
+sub
+pop local 0
+push local 0
+push constant 4
+call Math.divide 2
+pop local 2
+push local 0
+push local 2
+push constant 4
+call Math.multiply 2
+sub
+pop local 3
+push constant 65
+pop local 4
+push local 2
+push this 0
+add
+pop pointer 1
+push that 0
+pop local 5
+label WHILE_EXP0
+push local 3
+push local 5
+add
+pop pointer 1
+push that 0
+push constant 64
+gt
+not
+if-goto WHILE_END0
+push constant 23
+push local 0
+call Math.multiply 2
+push local 0
+call Math.multiply 2
+push constant 79
+add
+pop local 1
+push local 1
+push local 1
+push constant 16
+call Math.divide 2
+push constant 16
+call Math.multiply 2
+sub
+pop local 0
+push local 0
+push constant 4
+call Math.divide 2
+pop local 2
+push local 0
+push local 2
+push constant 4
+call Math.multiply 2
+sub
+pop local 3
+push constant 131
+push local 4
+sub
+pop local 4
+push local 2
+push this 0
+add
+pop pointer 1
+push that 0
+pop local 5
+goto WHILE_EXP0
+label WHILE_END0
+push local 3
+push local 5
+add
+push local 4
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push constant 0
+return
+function Board.transform 4
+push argument 0
+pop pointer 0
+push argument 1
+push constant 0
+eq
+push argument 1
+push constant 1
+eq
+or
+if-goto IF_TRUE0
+goto IF_FALSE0
+label IF_TRUE0
+push constant 0
+not
+pop local 1
+goto IF_END0
+label IF_FALSE0
+push constant 0
+pop local 1
+label IF_END0
+push argument 1
+push constant 0
+eq
+push argument 1
+push constant 2
+eq
+or
+if-goto IF_TRUE1
+goto IF_FALSE1
+label IF_TRUE1
+push constant 0
+not
+pop local 0
+goto IF_END1
+label IF_FALSE1
+push constant 0
+pop local 0
+label IF_END1
+push pointer 0
+push local 0
+call Board.getStrips 2
+pop local 2
+push constant 0
+pop local 3
+label WHILE_EXP0
+push local 3
+push constant 4
+lt
+not
+if-goto WHILE_END0
+push local 3
+push local 2
+add
+push pointer 0
+push pointer 0
+push local 3
+push local 2
+add
+pop pointer 1
+push that 0
+push local 1
+call Board.align 3
+push local 1
+call Board.reduce 3
+pop temp 0
+pop pointer 1
+push temp 0
+pop that 0
+push local 3
+push constant 1
+add
+pop local 3
+goto WHILE_EXP0
+label WHILE_END0
+push pointer 0
+push local 2
+push local 0
+call Board.arrange 3
+pop temp 0
+push constant 0
+return
+function Board.next 0
+push argument 0
+pop pointer 0
+push pointer 0
+call Board.addTile 1
+pop temp 0
+push this 1
+push constant 1
+add
+pop this 1
+push pointer 0
+push argument 1
+call Board.transform 2
+pop temp 0
+push constant 0
+return
+function Board.draw 5
+push argument 0
+pop pointer 0
+push constant 9
+pop local 0
+push constant 30
+pop local 1
+push constant 0
+pop local 2
+label WHILE_EXP0
+push local 2
+push constant 4
+lt
+not
+if-goto WHILE_END0
+push constant 0
+pop local 3
+push local 0
+push local 2
+add
+push local 1
+call Output.moveCursor 2
+pop temp 0
+push local 2
+push this 0
+add
+pop pointer 1
+push that 0
+pop local 4
+label WHILE_EXP1
+push local 3
+push constant 4
+lt
+not
+if-goto WHILE_END1
+push local 3
+push local 4
+add
+pop pointer 1
+push that 0
+call Output.printChar 1
+pop temp 0
+push local 3
+push constant 1
+add
+pop local 3
+goto WHILE_EXP1
+label WHILE_END1
+push local 2
+push constant 1
+add
+pop local 2
+goto WHILE_EXP0
+label WHILE_END0
+push constant 0
+return
+function Board.dispose 0
+push argument 0
+pop pointer 0
+push pointer 0
+call Memory.deAlloc 1
+pop temp 0
+push constant 0
+return
diff --git a/projects/09/K/KGame.jack b/projects/09/K/KGame.jack
new file mode 100644
index 0000000..796f5b5
--- /dev/null
+++ b/projects/09/K/KGame.jack
@@ -0,0 +1,34 @@
+class KGame{
+    field Board board;
+
+    constructor KGame new() {
+        let board = Board.new();
+        do board.draw();
+        return this;
+    }
+
+    method void dispose() {
+        do board.dispose();
+        do Memory.deAlloc(this);
+        return;
+    }
+
+    method void run() {
+        var int key, dir;
+        var boolean exit;
+        let key = 0;
+        let exit = false;
+        while (~exit) {
+            while ((key < 130) | (key > 133)) {
+                let key = Keyboard.keyPressed();
+            }
+            let dir = key - 130;
+            while (~(key = 0)) {
+                let key = Keyboard.keyPressed();
+            }
+            do board.next(dir);
+            do board.draw();
+        }
+        return;
+    }
+}
diff --git a/projects/09/K/KGame.vm b/projects/09/K/KGame.vm
new file mode 100644
index 0000000..767c14a
--- /dev/null
+++ b/projects/09/K/KGame.vm
@@ -0,0 +1,74 @@
+function KGame.new 0
+push constant 1
+call Memory.alloc 1
+pop pointer 0
+call Board.new 0
+pop this 0
+push this 0
+call Board.draw 1
+pop temp 0
+push pointer 0
+return
+function KGame.dispose 0
+push argument 0
+pop pointer 0
+push this 0
+call Board.dispose 1
+pop temp 0
+push pointer 0
+call Memory.deAlloc 1
+pop temp 0
+push constant 0
+return
+function KGame.run 3
+push argument 0
+pop pointer 0
+push constant 0
+pop local 0
+push constant 0
+pop local 2
+label WHILE_EXP0
+push local 2
+not
+not
+if-goto WHILE_END0
+label WHILE_EXP1
+push local 0
+push constant 130
+lt
+push local 0
+push constant 133
+gt
+or
+not
+if-goto WHILE_END1
+call Keyboard.keyPressed 0
+pop local 0
+goto WHILE_EXP1
+label WHILE_END1
+push local 0
+push constant 130
+sub
+pop local 1
+label WHILE_EXP2
+push local 0
+push constant 0
+eq
+not
+not
+if-goto WHILE_END2
+call Keyboard.keyPressed 0
+pop local 0
+goto WHILE_EXP2
+label WHILE_END2
+push this 0
+push local 1
+call Board.next 2
+pop temp 0
+push this 0
+call Board.draw 1
+pop temp 0
+goto WHILE_EXP0
+label WHILE_END0
+push constant 0
+return
diff --git a/projects/09/K/Main.jack b/projects/09/K/Main.jack
new file mode 100644
index 0000000..4136e80
--- /dev/null
+++ b/projects/09/K/Main.jack
@@ -0,0 +1,9 @@
+class Main {
+    function void main() {
+        var KGame game;
+        let game = KGame.new();
+        do game.run();
+        do game.dispose();
+        return;
+    }
+}
diff --git a/projects/09/K/Main.vm b/projects/09/K/Main.vm
new file mode 100644
index 0000000..0a56ae9
--- /dev/null
+++ b/projects/09/K/Main.vm
@@ -0,0 +1,11 @@
+function Main.main 1
+call KGame.new 0
+pop local 0
+push local 0
+call KGame.run 1
+pop temp 0
+push local 0
+call KGame.dispose 1
+pop temp 0
+push constant 0
+return