First Person Camera

Code Snippets
1

Needed a first person camera for my game so I created this. Thought I’d share it for anyone else who needs it.

w = go forward
s = go backward
a = move left (strafe)
d = move right (strafe)

use mouse to look up and down or turn left and right

import direct.directbase.DirectStart
from direct.showbase.DirectObject import DirectObject

class World(DirectObject):
	def __init__(self):
		base.setBackgroundColor(1, 1, 1)
		base.disableMouse()
		self.environmentModel = loader.loadModel("models/environment")
		self.environmentModel.reparentTo(render)
		self.environmentModel.setPos(0, 20, -10)
		
		self.cameraModel = loader.loadModel("models/camera")
		self.cameraModel.reparentTo(render)
		self.cameraModel.setPos(0, 15, 0)
		
		base.camera.reparentTo(self.cameraModel)
		base.camera.setY(base.camera, 5)
		
		self.keyMap = {"w" : False, "s" : False, "a" : False, "d" : False,}

		self.accept("w", self.setKey, ["w", True])
		self.accept("s", self.setKey, ["s", True])	
		self.accept("a", self.setKey, ["a", True])	
		self.accept("d", self.setKey, ["d", True])

		self.accept("w-up", self.setKey, ["w", False])
		self.accept("s-up", self.setKey, ["s", False])
		self.accept("a-up", self.setKey, ["a", False])
		self.accept("d-up", self.setKey, ["d", False])
		
		taskMgr.add(self.cameraControl, "Camera Control")
		
	def setKey(self, key, value):
		self.keyMap[key] = value
	
	def cameraControl(self, task):
		dt = globalClock.getDt()
		if(dt > .20):
			return task.cont
			
		if(base.mouseWatcherNode.hasMouse() == True):
			mpos = base.mouseWatcherNode.getMouse()
			base.camera.setP(mpos.getY() * 30)
			base.camera.setH(mpos.getX() * -50)
			if (mpos.getX() < 0.1 and mpos.getX() > -0.1 ):
				self.cameraModel.setH(self.cameraModel.getH())
			else:
				self.cameraModel.setH(self.cameraModel.getH() + mpos.getX() * -1)
			
		if(self.keyMap["w"] == True):
			self.cameraModel.setY(self.cameraModel, 15 * dt)
			print("camera moving forward")
			return task.cont
		elif(self.keyMap["s"] == True):
			self.cameraModel.setY(self.cameraModel, -15 * dt)
			print("camera moving backwards")
			return task.cont
		elif(self.keyMap["a"] == True):
			self.cameraModel.setX(self.cameraModel, -10 * dt)
			print("camera moving left")
			return task.cont
		elif(self.keyMap["d"] == True):
			self.cameraModel.setX(self.cameraModel, 10 * dt)
			print("camera moving right")
			return task.cont
		else:
			return task.cont
w = World()
run()
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