From ef80c7d091c1b10f1b5814e8aef7eb0446606880 Mon Sep 17 00:00:00 2001
From: "Daniele Verducci (Slimpenguin)" <daniele.verducci@gmail.com>
Date: Wed, 11 Jan 2023 10:36:01 +0100
Subject: [PATCH] Doors

---
 v3/raycaster.py | 44 +++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 41 insertions(+), 3 deletions(-)

diff --git a/v3/raycaster.py b/v3/raycaster.py
index 94533ef..0734b96 100755
--- a/v3/raycaster.py
+++ b/v3/raycaster.py
@@ -31,9 +31,9 @@ TEXTURES = [
 TEXTURE_SIZE = 64
 
 # Raycast cfg
-RAYCAST_WIN_WIDTH = 1000
-RAYCAST_WIN_HEIGHT = 1000
-RAYCAST_RESOLUTION_SCALING = 1
+RAYCAST_WIN_WIDTH = 600
+RAYCAST_WIN_HEIGHT = 600
+RAYCAST_RESOLUTION_SCALING = 4
 RAYCAST_RENDER_WIDTH = int(RAYCAST_WIN_WIDTH / RAYCAST_RESOLUTION_SCALING)
 RAYCAST_RENDER_HEIGHT = int(RAYCAST_WIN_HEIGHT / RAYCAST_RESOLUTION_SCALING)
 DOF = 2*MAP_SIZE	# Depth Of Field
@@ -84,6 +84,9 @@ MAP = [
 class Main:
 
 	def __init__(self):
+		# Print instructions
+		print('RAYCASTER by penguin86\n\nMovement: up, down, left, right\nOpen door: space\n\nFPS:')
+
 		# Check valid map
 		if len(MAP) != MAP_SIZE * MAP_SIZE:
 			raise ValueError("Map size is {}, but should be a power of {}".format(len(MAP), MAP_SIZE))
@@ -153,6 +156,10 @@ class Main:
 			if self.player_position["r"] < 0:
 				self.player_position["r"] = 2*math.pi
 
+			# Open doors
+			if keystate[sdl2.SDL_SCANCODE_SPACE]:
+				self.openDoor()
+
 			self.draw()
 			if not MAP_HIDDEN:
 				self.mapWindow.refresh()
@@ -419,6 +426,37 @@ class Main:
 			converted.append(pixels[i+2] + (pixels[i+1] << 8) + (pixels[i] << 16)) # BGR
 		return converted
 
+	def openDoor(self):
+		# Opens a door near the user
+		# Works by modifying the map (removing the door)
+
+		# Find where is the user
+		mapX = int(self.player_position["x"] / MAP_SCALE)
+		mapY = int(self.player_position["y"] / MAP_SCALE)
+		mapArrayPosition = mapY * MAP_SIZE + mapX
+
+		# Find in which direction the user is looking
+		playerAngle = self.player_position["r"]
+		lookingAtMapArrayPosition = 0
+		if playerAngle > math.pi / 4 and playerAngle <= 3 * math.pi / 4:
+			# Looking up
+			lookingAtMapArrayPosition = mapArrayPosition - MAP_SIZE
+		elif playerAngle > 3 * math.pi / 4 and playerAngle <= 5 * math.pi / 4:
+			# Looking left
+			lookingAtMapArrayPosition = mapArrayPosition - 1
+		elif playerAngle > 5 * math.pi / 4 and playerAngle <= 7 * math.pi / 4:
+			# Looking down
+			lookingAtMapArrayPosition = mapArrayPosition + MAP_SIZE
+		else:
+			# Looking right
+			lookingAtMapArrayPosition = mapArrayPosition + 1
+
+		if MAP[lookingAtMapArrayPosition] == MAP_DOOR_CELL_TYPE:
+			# Player looking at a door: open it ("remove" it, leaving an empty space)
+			MAP[lookingAtMapArrayPosition] = 0
+		else:
+			print("Player looking at cell #{} of type {}: nothing to do".format(lookingAtMapArrayPosition, MAP[lookingAtMapArrayPosition]))
+
 
 
 if __name__ == '__main__':