Enhance: Improve game mechanics and visuals in GameView and GameBoard

- Increased glow effect and adjusted border properties for better visual appeal.
- Updated block size calculation to ensure proper fitting within the view.
- Modified rotation logic in GameBoard to include advanced wall kick mechanics for smoother gameplay.
- Adjusted piece spawning to start from the top row and refined hold mechanics.
- Added getter and setter for rotation index in Tetromino for better encapsulation.

app/src/main/java/com/pixelmintdrop/game/GameView.kt

@@ -24,6 +24,7 @@ import com.pixelmintdrop.model.GameBoard
 import com.pixelmintdrop.model.Tetromino
 import com.pixelmintdrop.model.TetrominoType
 import kotlin.math.abs
+import kotlin.math.min
 
 /**
  * GameView that renders the Tetris game and handles touch input
@@ -58,11 +59,11 @@ class GameView @JvmOverloads constructor(
     
     private val borderGlowPaint = Paint().apply {
         color = Color.WHITE
-        alpha = 60
+        alpha = 90 // Increased from 60
         isAntiAlias = true
         style = Paint.Style.STROKE
         strokeWidth = 2f
-        maskFilter = BlurMaskFilter(8f, BlurMaskFilter.Blur.OUTER)
+        maskFilter = BlurMaskFilter(12f, BlurMaskFilter.Blur.OUTER) // Increased from 8f
     }
     
     private val ghostBlockPaint = Paint().apply {
@@ -141,7 +142,7 @@ class GameView @JvmOverloads constructor(
     private var minSwipeVelocity = 1200  // Increased from 800 to require more deliberate swipes
     private val maxTapMovement = 30f    // Increased from 20f to 30f for more lenient tap detection
     private val minTapTime = 100L       // Minimum time for a tap (in milliseconds)
-    private val rotationCooldown = 150L // Minimum time between rotations (in milliseconds)
+    private val rotationCooldown = 100L // Reduced from 150L to allow faster rotation taps
     private val moveCooldown = 50L      // Minimum time between move haptics (in milliseconds)
     private val doubleTapTimeout = 400L // Increased from 300ms to 400ms for more lenient double tap detection
     private var lastTapX = 0f           // X coordinate of last tap
@@ -442,28 +443,32 @@ class GameView @JvmOverloads constructor(
      * Calculate dimensions for the board and blocks based on view size
      */
     private fun calculateDimensions(width: Int, height: Int) {
-        // Calculate block size based on available space
         val horizontalBlocks = gameBoard.width
         val verticalBlocks = gameBoard.height
+        // Go back to zero padding for flush border
+        val borderPadding = 0f
 
-        // Account for all glow effects and borders
-        val borderPadding = 16f  // Padding for border glow effects
+        // Calculate available drawing area (entire view)
+        val availableWidth = width.toFloat() - (borderPadding * 2)
+        val availableHeight = height.toFloat() - (borderPadding * 2)
 
-        // Calculate block size to fit the height exactly, accounting for all padding
-        blockSize = (height.toFloat() - (borderPadding * 2)) / verticalBlocks
+        // Calculate potential block sizes based on fitting width and height separately
+        val blockSizeBasedOnWidth = availableWidth / horizontalBlocks
+        val blockSizeBasedOnHeight = availableHeight / verticalBlocks
 
-        // Calculate total board width
-        val totalBoardWidth = blockSize * horizontalBlocks
+        // Use the smaller block size to ensure the entire board fits within the padded area
+        blockSize = minOf(blockSizeBasedOnWidth, blockSizeBasedOnHeight)
 
-        // Center horizontally
-        boardLeft = (width - totalBoardWidth) / 2
-        boardTop = borderPadding  // Start with border padding from top
+        // Calculate the final dimensions of the board using the determined block size
+        val finalBoardWidth = blockSize * horizontalBlocks
+        val finalBoardHeight = blockSize * verticalBlocks
 
-        // Calculate the total height needed for the board
-        val totalHeight = blockSize * verticalBlocks
+        // Center the final board area within the entire view
+        boardLeft = (width.toFloat() - finalBoardWidth) / 2
+        boardTop = (height.toFloat() - finalBoardHeight) / 2
 
         // Log dimensions for debugging
-        Log.d(TAG, "Board dimensions: width=$width, height=$height, blockSize=$blockSize, boardLeft=$boardLeft, boardTop=$boardTop, totalHeight=$totalHeight")
+        Log.d(TAG, "Board dimensions (Small Padding, Centered): view($width, $height), block($blockSize), board($finalBoardWidth, $finalBoardHeight), pos($boardLeft, $boardTop)")
     }
     
     override fun onDraw(canvas: Canvas) {
@@ -632,13 +637,20 @@ class GameView @JvmOverloads constructor(
         
         val rect = RectF(left, top, right, bottom)
         
-        // Draw base border with increased glow
-        borderGlowPaint.apply {
-            alpha = 80  // Increased from 60
-            maskFilter = BlurMaskFilter(16f, BlurMaskFilter.Blur.OUTER)  // Increased from 8f
-        }
+        // Draw base border with updated glow properties from the paint object
         canvas.drawRect(rect, borderGlowPaint)
 
+        // Draw a sharp inner line for a flush appearance
+        val sharpBorderPaint = Paint().apply {
+            color = Color.WHITE
+            alpha = 90 // Slightly less intense than glow
+            isAntiAlias = true
+            style = Paint.Style.STROKE
+            strokeWidth = 1f // Very thin line
+            maskFilter = null // No blur
+        }
+        canvas.drawRect(rect, sharpBorderPaint)
+        
         // Draw pulsing border if animation is active
         if (isPulsing) {
             val pulseBorderPaint = Paint().apply {

app/src/main/java/com/pixelmintdrop/model/GameBoard.kt

@@ -148,17 +148,26 @@ class GameBoard(
         currentPiece = nextPiece
         spawnNextPiece()
         
-        // Center the piece horizontally and spawn one unit higher
+        // Center the piece horizontally
         currentPiece?.apply {
             x = (width - getWidth()) / 2
-            y = -1  // Spawn one unit above the top of the screen
+            // Spawn piece at the top row (y=0)
+            y = 0
 
             Log.d(TAG, "spawnPiece() - new piece spawned at position (${x},${y}), type=${type}")
             
-            // Set the spawn time for the grace period
+            // Allow holding again if a new piece spawns naturally
+            if (!isPieceLocking) { // Avoid resetting hold during lockPiece sequence
+                 canHold = true
+            }
+            
+            // Reset soft drop flag
+            isPlayerSoftDrop = false
+            
+            // Record spawn time for grace period
             pieceSpawnTime = System.currentTimeMillis()
             
-            // Check if the piece can be placed (Game Over condition)
+            // Check if the piece can be placed at y=0 (Game Over condition)
             if (!canMove(0, 0)) {
                 isGameOver = true
                 Log.d(TAG, "spawnPiece() - Game Over condition detected")
@@ -270,42 +279,58 @@ class GameBoard(
      * Rotate the current piece clockwise
      */
     fun rotate() {
-        currentPiece?.let {
-            // Save current rotation
-            val originalX = it.x
-            val originalY = it.y
+        currentPiece?.let { piece ->
+            // Save current rotation and position
+            val originalRotationIndex = piece.getRotationIndex() // Use getter
+            val originalX = piece.x
+            val originalY = piece.y
 
             // Try to rotate
-            it.rotateClockwise()
+            piece.rotateClockwise()
+            Log.d(TAG, "Attempting rotate CW. Original pos: ($originalX, $originalY)")
+
+            // Check if the new rotation is valid at the original position
+            if (canMove(0, 0)) {
+                // Rotation is valid without kicks
+                Log.d(TAG, "Rotate CW successful without kick at: (${piece.x}, ${piece.y})")
+                onPieceMove?.invoke()
+                return@let // Exit the let block
+            }
 
             // Wall kick logic - try to move the piece if rotation causes collision
-            if (!canMove(0, 0)) {
-                // Try to move left
-                if (canMove(-1, 0)) {
-                    it.x--
-                }
-                // Try to move right
-                else if (canMove(1, 0)) {
-                    it.x++
-                }
-                // Try to move 2 spaces (for I piece)
-                else if (canMove(-2, 0)) {
-                    it.x -= 2
-                }
-                else if (canMove(2, 0)) {
-                    it.x += 2
-                }
-                // Try to move up for floor kicks
-                else if (canMove(0, -1)) {
-                    it.y--
-                }
-                // Revert if can't find a valid position
-                else {
-                    it.rotateCounterClockwise()
-                    it.x = originalX
-                    it.y = originalY
+            // Define standard kicks (adjust based on SRS rules if needed)
+            // Order matters: check common kicks first
+            val kicks = listOf(
+                Pair(-1, 0), Pair(1, 0),   // Basic wall kicks L/R
+                Pair(-1, -1), Pair(1, -1), // Kicks slighty up (sometimes needed)
+                Pair(0, -1),               // Floor kick
+                Pair(-2, 0), Pair(2, 0)    // Kicks for I piece
+                // Add more complex SRS kicks if necessary
+            )
+
+            var kickApplied = false
+            for ((kickX, kickY) in kicks) {
+                // Check canMove relative to the ORIGINAL position + kick offset
+                // Temporarily set position for the check
+                piece.x = originalX + kickX
+                piece.y = originalY + kickY
+                if (canMove(0, 0)) { // Check validity at the kicked position
+                    Log.d(TAG, "Rotate CW kick applied: ($kickX, $kickY), new pos: (${piece.x}, ${piece.y})")
+                    kickApplied = true
+                    onPieceMove?.invoke()
+                    break // Found a valid kick, stop checking
                 }
             }
+
+            // Revert if no kick worked
+            if (!kickApplied) {
+                Log.d(TAG, "Rotate CW failed - reverting rotation and position")
+                piece.setRotationIndex(originalRotationIndex) // Use setter
+                piece.x = originalX                         // Revert position
+                piece.y = originalY
+                // Do not call onPieceMove if rotation failed
+            }
+            // No need for onPieceMove here as it's called when kick succeeds or initial rotation is fine
         }
     }
     
@@ -313,42 +338,58 @@ class GameBoard(
      * Rotate the current piece counterclockwise
      */
     fun rotateCounterClockwise() {
-        currentPiece?.let {
-            // Save current rotation
-            val originalX = it.x
-            val originalY = it.y
+        currentPiece?.let { piece ->
+            // Save current rotation and position
+            val originalRotationIndex = piece.getRotationIndex() // Use getter
+            val originalX = piece.x
+            val originalY = piece.y
 
             // Try to rotate
-            it.rotateCounterClockwise()
+            piece.rotateCounterClockwise()
+            Log.d(TAG, "Attempting rotate CCW. Original pos: ($originalX, $originalY)")
+
+            // Check if the new rotation is valid at the original position
+            if (canMove(0, 0)) {
+                 // Rotation is valid without kicks
+                Log.d(TAG, "Rotate CCW successful without kick at: (${piece.x}, ${piece.y})")
+                onPieceMove?.invoke()
+                return@let // Exit the let block
+            }
 
             // Wall kick logic - try to move the piece if rotation causes collision
-            if (!canMove(0, 0)) {
-                // Try to move left
-                if (canMove(-1, 0)) {
-                    it.x--
-                }
-                // Try to move right
-                else if (canMove(1, 0)) {
-                    it.x++
-                }
-                // Try to move 2 spaces (for I piece)
-                else if (canMove(-2, 0)) {
-                    it.x -= 2
-                }
-                else if (canMove(2, 0)) {
-                    it.x += 2
-                }
-                // Try to move up for floor kicks
-                else if (canMove(0, -1)) {
-                    it.y--
-                }
-                // Revert if can't find a valid position
-                else {
-                    it.rotateClockwise()
-                    it.x = originalX
-                    it.y = originalY
-                }
-            }
+             // Define standard kicks (adjust based on SRS rules if needed)
+            // Order matters: check common kicks first
+            val kicks = listOf(
+                Pair(1, 0), Pair(-1, 0),   // Basic wall kicks R/L (opposite order might be better for CCW?)
+                Pair(1, -1), Pair(-1, -1), // Kicks slighty up
+                Pair(0, -1),               // Floor kick
+                Pair(2, 0), Pair(-2, 0)    // Kicks for I piece
+                // Add more complex SRS kicks if necessary
+            )
+
+            var kickApplied = false
+            for ((kickX, kickY) in kicks) {
+                 // Check canMove relative to the ORIGINAL position + kick offset
+                 // Temporarily set position for the check
+                 piece.x = originalX + kickX
+                 piece.y = originalY + kickY
+                 if (canMove(0, 0)) { // Check validity at the kicked position
+                     Log.d(TAG, "Rotate CCW kick applied: ($kickX, $kickY), new pos: (${piece.x}, ${piece.y})")
+                     kickApplied = true
+                     onPieceMove?.invoke()
+                     break // Found a valid kick, stop checking
+                 }
+             }
+
+            // Revert if no kick worked
+             if (!kickApplied) {
+                 Log.d(TAG, "Rotate CCW failed - reverting rotation and position")
+                 piece.setRotationIndex(originalRotationIndex) // Use setter
+                 piece.x = originalX                         // Revert position
+                 piece.y = originalY
+                 // Do not call onPieceMove if rotation failed
+             }
+             // No need for onPieceMove here as it's called when kick succeeds or initial rotation is fine
         }
     }
     
@@ -368,7 +409,8 @@ class GameBoard(
                     val boardY = newY + y
                     
                     // Check if the position is outside the board horizontally
-                    if (boardX < 0 || boardX >= width) {
+                    val isOutsideHorizontal = boardX < 0 || boardX >= width
+                    if (isOutsideHorizontal) {
                         return false
                     }
                     
@@ -382,8 +424,8 @@ class GameBoard(
                         return false
                     }
                     
-                    // Check if the position is more than one unit above the top of the screen
-                    if (boardY < -1) {
+                    // Check if the position is above the board (top wall collision)
+                    if (boardY < 0) {
                         return false
                     }
                 }

app/src/main/java/com/pixelmintdrop/model/Tetromino.kt

@@ -17,6 +17,21 @@ class Tetromino(val type: TetrominoType) {
     var x = 0
     var y = 0
     
+    /**
+     * Get the current rotation index (0-3)
+     */
+    fun getRotationIndex(): Int {
+        return currentRotation
+    }
+
+    /**
+     * Set the current rotation index (0-3)
+     * Internal visibility allows access within the same module (e.g., from GameBoard)
+     */
+    internal fun setRotationIndex(index: Int) {
+        currentRotation = index.coerceIn(0, 3) // Ensure value stays within 0-3
+    }
+    
     /**
      * Get the current shape of the tetromino based on rotation
      */