SDL init, draw character in 2D map, no rotation

raycaster.py

@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+
+# RAYCASTER
+#
+# pip install pysdl2 pysdl2-dll
+
+import sys
+import sdl2.ext
+
+WIN_WIDTH = 640
+WIN_HEIGHT = 480
+DUNGEON_WIDTH = WIN_WIDTH
+DUNGEON_HEIGHT = WIN_HEIGHT
+PLAYER_SPEED = 10
+
+class Main:
+
+	def __init__(self):
+		# Graphics
+		sdl2.ext.init()
+		self.window = sdl2.ext.Window("Raycaster", size=(WIN_WIDTH, WIN_HEIGHT))
+		self.window.show()
+		self.surface = self.window.get_surface()
+
+		# Player
+		self.player_position = {"x": WIN_WIDTH/2, "y": WIN_HEIGHT/2, "r": 0}
+
+		return
+
+	def run(self):
+		running = True
+		while running:
+			events = sdl2.ext.get_events()
+			for event in events:
+				if event.type == sdl2.SDL_QUIT:
+					running = False
+					break
+				if event.type == sdl2.SDL_KEYDOWN:
+					if event.key.keysym.sym == sdl2.SDLK_UP:
+						self.player_position["y"] = int(self.player_position["y"] - PLAYER_SPEED)
+					elif event.key.keysym.sym == sdl2.SDLK_DOWN:
+						self.player_position["y"] = int(self.player_position["y"] + PLAYER_SPEED)
+					if event.key.keysym.sym == sdl2.SDLK_LEFT:
+						self.player_position["x"] = int(self.player_position["x"] - PLAYER_SPEED)
+					elif event.key.keysym.sym == sdl2.SDLK_RIGHT:
+						self.player_position["x"] = int(self.player_position["x"] + PLAYER_SPEED)
+					# Limit position
+					if self.player_position["x"] < 0:
+						self.player_position["x"] = 0
+					if self.player_position["x"] > DUNGEON_WIDTH:
+						self.player_position["x"] = DUNGEON_WIDTH
+					if self.player_position["y"] < 0:
+						self.player_position["y"] = 0
+					if self.player_position["y"] > DUNGEON_HEIGHT:
+						self.player_position["y"] = DUNGEON_HEIGHT
+
+			sdl2.ext.draw.fill(self.surface, sdl2.ext.Color(0,0,0,0)) # Clears screen
+			self.draw()
+			self.window.refresh()
+		return 0
+
+	def draw(self):
+		#sdl2.ext.draw.line(self.surface, sdl2.ext.Color(255,0,0,255), (0, 0, self.player_position["x"], self.player_position["y"]))
+		sdl2.ext.draw.fill(self.surface, sdl2.ext.Color(0,255,0,255), (self.player_position["x"] - 4, self.player_position["y"] - 4, 4, 4))
+		return
+
+
+
+if __name__ == '__main__':
+	try:
+		main = Main()
+		main.run()
+	except KeyboardInterrupt:
+		exit(0)