From 530a47a085888dcba3e78f3a822aa33719a63876 Mon Sep 17 00:00:00 2001
From: Fabien Freling <public@ffreling.com>
Date: Mon, 22 Apr 2019 19:13:44 +0200
Subject: [PATCH] zetris: fix rotated sprite

---
 zetris.lua | 91 +++++++++++++++++++++++++++++-------------------------
 1 file changed, 49 insertions(+), 42 deletions(-)

diff --git a/zetris.lua b/zetris.lua
index 1b58b9c..ea88334 100644
--- a/zetris.lua
+++ b/zetris.lua
@@ -8,54 +8,50 @@ bgspriteof=-240
 
 pieces = {
 	t={sprite=256,
-			 {x=0, y=0},
-			 {x=-1, y=0},
-			 {x=1, y=0},
-			 {x=0, y=-1}
+		{x=0, y=0},
+		{x=-1, y=0},
+		{x=1, y=0},
+		{x=0, y=-1}
 	}
 }
 
 -- GAME STATE
 currentPiece = { piece = pieces.t,
-																	position = {x = 11, y = 2},
-																	rotation = 0
-																	}
+	position = {x = 11, y = 2},
+	rotation = 0
+}
 
 function rotatedpiece()
- points = {}
- if currentPiece.rotation == 0 then
-	 return currentPiece.piece
+	points = {}
+	if currentPiece.rotation == 0 then
+		return currentPiece.piece
 	elseif currentPiece.rotation == 1 then
-	 for i=1, 4 do
-		 points[i] = {x=currentPiece.piece[i].x,
-																y=currentPiece.piece[i].y}
-		 --points[i].x = currentPiece.piece[i].y * -1
-			--points[i].y = currentPiece.piece[i].x
-			points[i].x = currentPiece.piece[i].x
-			points[i].y = currentPiece.piece[i].y
+		for i=1, 4 do
+			points[i] = {x=0,y=0}
+			points[i].x = currentPiece.piece[i].y * -1
+			points[i].y = currentPiece.piece[i].x
 		end
 	elseif currentPiece.rotation == 2 then
 		for i=1, 4 do
 			points[i] = {x=0,y=0}
-		 points[i].x = currentPiece.piece[i].x * -1
+			points[i].x = currentPiece.piece[i].x * -1
 			points[i].y = currentPiece.piece[i].y * -1
 		end
 	elseif currentPiece.rotation == 3 then
-	 for i=1, 4 do
-		 points[i] = {x=0,y=0}
-		 points[i].x = currentPiece.piece[i].y
+		for i=1, 4 do
+			points[i] = {x=0,y=0}
+			points[i].x = currentPiece.piece[i].y
 			points[i].y = currentPiece.piece[i].x * -1
 		end
  end
 	return points
 end
 
-																
 function piecedropped()
- piece = rotatedpiece()
+	piece = rotatedpiece()
 	point = currentPiece.position
- for i=1, 4 do
-	 x=(point.x + piece[i].x)
+	for i=1, 4 do
+		x=(point.x + piece[i].x)
 		y=(point.y + piece[i].y)
 		if mget(x, y+1) ~= 0 then
 		  return true
@@ -77,7 +73,7 @@ function canmove(point)
 end
 
 function droppiece()
- piece = rotatedpiece()
+	piece = rotatedpiece()
 	point = currentPiece.position
 	sprite = piece.sprite + bgspriteof
 	for i=1, 4 do
@@ -88,41 +84,52 @@ function droppiece()
 end
 
 function resetcurrent()
-currentPiece = { piece = pieces.t,
-																	position = {x = 11, y = 2},
-																	rotation = 0 }
+currentPiece = {
+	piece = pieces.t,
+	position = {x = 11, y = 2},
+	rotation = 0
+}
 end
 
 function drawpiece()
- piece = rotatedpiece()
+	piece = rotatedpiece()
 	origin = currentPiece.position
-	for i = 1, 4 do 
+	for i = 1, 4 do
 		point = { x = (piece[i].x + origin.x) * blocksize, 
 		          y = (piece[i].y + origin.y) * blocksize}
 		
-		spr(piece.sprite, point.x, point.y)
+		spr(currentPiece.piece.sprite, point.x, point.y)
 	end
 end
 
 function TIC()
 	map(0,0,30,17)
- local	newPosition = {x = currentPiece.position.x,
-	y = currentPiece.position.y}
+	local newPosition = {
+		x = currentPiece.position.x,
+		y = currentPiece.position.y
+	}
 	if btnp(2) then
-	  newPosition.x = newPosition.x - 1
+		newPosition.x = newPosition.x - 1
 	elseif btnp(3) then
-	  newPosition.x = newPosition.x + 1
- elseif btnp(1) then
-	  newPosition.y = newPosition.y + 1
- elseif btnp(4) then
-		 r = currentPiece.rotation
-   currentPiece.rotation = (r+1)%4
+		newPosition.x = newPosition.x + 1
+	elseif btnp(1) then
+		newPosition.y = newPosition.y + 1
+	elseif btnp(4) then
+		r = currentPiece.rotation
+		currentPiece.rotation = (r+1)%4
+		rpiece = rotatedpiece()
+		trace('position: '..currentPiece.position.x..', '..currentPiece.position.y)
+		trace('sprite: '..currentPiece.piece.sprite)
+		trace('rotation: '..currentPiece.rotation)
+		for i = 1, 4 do
+			trace(rpiece[i].x..', '..rpiece[i].y)
+		end
 	end
 	
 	if canmove(newPosition) then
 		currentPiece.position = newPosition
 	elseif piecedropped() then
-	 droppiece()
+		droppiece()
 		resetcurrent()
 	end