Can now move the circles

objects/circle.lua

@@ -18,17 +18,79 @@ function gen:new(game,x,y,color,grid)
 		local spriteindex = 1
 		if self.selected then spriteindex = 2 end
 		lg.draw(self.sprites[spriteindex],self.rect[1]-self.game.camerax-self.spriteoffx,self.rect[2]-self.game.cameray-self.spriteoffy)
+		if self.selected then
+			local i
+			for i=1,#self.moves do
+				lg.draw(self.shadowsprite,self.moves[i][1]-self.game.camerax-self.spriteoffx,self.moves[i][2]-self.game.cameray-self.spriteoffy)
+			end
+		end
 	end
 
 	function Circle:MouseCallback(x,y,presses)
 		if self.rect:collidepoint(x,y) then
-			local c = self.game:findName(self.color)
+			local c = self.game:findName("Circle")
 			local i
 			for i=1,#c do
 				if c[i]~=self then c[i].selected = false end
 			end
 			self.selected = not self.selected
+			self.depth = 1
+			if self.selected then
+				self.moves = self:findAvailableMoves()
+				self.depth = 2
+			end
 		end
+		if self.selected then
+			local i
+			for i=1,#self.moves do
+				rect = self.game.rect:new(self.moves[i][1],self.moves[i][2],self.cellsize,self.cellsize)
+				if rect:collidepoint(x,y) then
+					self.rect:move_ip(self.moves[i][1],self.moves[i][2])
+					self.selected = false
+					break
+				end
+			end
+		end
+	end
+
+	function Circle:findAvailableMoves()
+		local moves = {}
+		local movx
+		local movy
+		local offx
+		local offy
+		obj = self.game:findName("Circle")
+
+		function ValidMove(x,y)
+			local i
+			x = self.rect.x+x+self.cellsize/2
+			y = self.rect.y+y+self.cellsize/2
+			local result = self.grid.rect:collidepoint(x,y)
+			for i=1,#obj do
+				if obj[i].rect:collidepoint(x,y) then
+					result = false
+				end
+			end
+			return result
+		end
+
+		for movx=-1,1 do
+			for movy=-1,1 do
+				if not (movx==0 and movy==0) then
+					offx = movx*self.cellsize
+					offy = movy*self.cellsize
+					while ValidMove(offx+movx*self.cellsize,offy+movy*self.cellsize) do
+						offx = offx + movx*self.cellsize
+						offy = offy + movy*self.cellsize
+					end
+					if ValidMove(offx,offy) then
+						table.insert(moves,{offx+self.rect.x,offy+self.rect.y})
+					end
+				end
+			end
+		end
+
+		return moves
 	end
 
 	return Circle