X-Git-Url: https://harishankar.org/repos/?p=butaba-adventures.git;a=blobdiff_plain;f=utility.py;h=f88430cc7192efe70c17ff17d44b872550e3240d;hp=5ef54281db4cda7d772136da8e4d3f8b98310d14;hb=0b36c3ccd4cb9cdf58fa5285366f023a8c931c61;hpb=0c8a13e68a280cfbcb3248e0c33937f6553c841d

diff --git a/utility.py b/utility.py
index 5ef5428..f88430c 100644
--- a/utility.py
+++ b/utility.py
@@ -67,3 +67,71 @@ def ask_question (surface, question, answers, bgscreen):
 				elif event.key == pygame.K_RETURN:
 					return sel_answer
 
+# function displaying the contents of a container. Object must contain
+# items list
+# edgewidth - container edges to avoid drawing items in
+def get_container_object (surface, obj, bgimage, edgewidth=0):
+
+	# get the number of items
+	numitems = len (obj.objects)
+	# number of rows
+	num_rows = (bgimage.get_height () - edgewidth*2) / 48
+	# number of cols
+	num_cols = (bgimage.get_width () - edgewidth*2) / 48
+
+	objposx = surface.get_width()/2 - bgimage.get_width()/2
+	objposy = surface.get_height()/2 - bgimage.get_height()/2
+
+	selitem = 0
+	selrow = 0
+	selcol = 0
+
+	while 1:
+		# display the background for the container
+		surface.blit (bgimage, (objposx, objposy))
+
+		# display each item in the container
+		i = 0
+		j = 0
+
+		# display all the items in container
+		for item in obj.objects:
+			surface.blit (item.image, (objposx + edgewidth+ j*48, objposy + edgewidth + i*48))
+			j += 1
+			if j >= num_cols:
+				j = 0
+				i += 1
+		# only draw selector if there is at least one item
+		if numitems > 0:
+			pygame.draw.rect (surface, pygame.Color (255,255,255),
+					pygame.Rect(objposx + edgewidth + selcol*48, objposy + edgewidth + selrow*48, 48, 48), 1)
+
+		pygame.display.update ()
+
+		# get events
+		for event in pygame.event.get ():
+			if event.type == pygame.QUIT:
+				sys.exit (0)
+			elif event.type == pygame.KEYDOWN:
+				if event.key == pygame.K_ESCAPE:
+					return None
+				elif event.key == pygame.K_RETURN:
+					if numitems > 0 and selitem >= 0 and selitem < numitems:
+						return obj.objects[selitem]
+					else:
+						return None
+				elif event.key == pygame.K_UP or event.key == pygame.K_LEFT:
+					# go to the prev item
+					selitem -= 1
+					if selitem < 0:
+						selitem = numitems - 1
+					selrow = selitem / num_cols
+					selcol = selitem % num_cols
+
+				elif event.key == pygame.K_DOWN or event.key == pygame.K_RIGHT:
+					# go to the next item
+					selitem += 1
+					if selitem > numitems - 1:
+						selitem = 0
+					selrow = selitem / num_cols
+					selcol = selitem % num_cols