Pygame/Python Help Please

[rojam2]

I'm getting ready to go back to school for programming so I decided to brush back up on what I had learned my first semester. I'm trying to make a simple COD: Zombie like game. The player will be controlled by WASD for movement and aiming done by the mouse "Top Down" Style. I have all movement down but I cannot get the image to rotate towards the mouse. Any help would be appreciated.

import pygame
import math
import random

# Window Attributes
Win_H = 800
Win_W = 1000

def vec_zero(v):
	'''set a 2D vector's components to zero'''
	v[0] = 0
	v[1] = 0

def vec_length(v):
	'''calculate and return the length of a 2D vector'''
	return (v[0] ** 2 + v[1] ** 2) ** 0.5

def vec_normalize(v):
	'''normalize (make length equal 1) a 2D vector'''
	tmpLength = vec_length(v)
	if tmpLength != 0:
		v[0] /= tmpLength
		v[1] /= tmpLength

def vec_add(v1, v2):
	'''add two vectors, v1 and v2, together, storing result in v1'''
	v1[0] += v2[0]
	v1[1] += v2[1]

def vec_mul(v, s):
	'''multiply a 2D vector, v, by a scalar (a single number), s'''
	v[0] *= s
	v[1] *= s

def load_images(character):
	'''load the north, east, south and west animation frames for character into
	a list, imgList, and return it'''
	imgList = []
	pathStrPre = character + '/walking '
	
	dirChar = 'neswqpzm'
	for c in dirChar:
		dirFrameList = []
		for i in range(0, 9):
			pathStr = pathStrPre + c + '000' + str(i) + '.bmp'
			
			img = pygame.image.load(pathStr).convert()
			img.set_colorkey((88, 92, 56))
			
			dirFrameList.append(img)
		
		imgList.append(dirFrameList)
	
	return imgList

# soldier's attributes
soldier_pos = [Win_W / 2, Win_H / 2]
soldier_vel = [0, 0]
soldier_vel_mag = 10.0 / 100.0	# 10 pixels / .1 seconds
#soldier_frames = load_images('soldier')
soldier_curframe = 0
SOLDIER_FRAME_DELAY = 1000.0 / 10.0		# delay in milliseconds at 10 FPS
soldier_curframe_delay = SOLDIER_FRAME_DELAY
soldier_curstate = 'STANDING'
soldier_runstate = 0	

soldier_surface = pygame.display.set_mode((30, 16))

mouse_angle = 0
	
pygame.init()

window = pygame.display.set_mode((Win_W, Win_H))
clock = pygame.time.Clock()
done = False

keyPressed = []


while not done:

	
	# check for events
	evtList = pygame.event.get()
	for evt in evtList:
		if evt.type == pygame.QUIT:
			done = True
		elif evt.type == pygame.KEYDOWN:
			if evt.key == pygame.K_ESCAPE:
				done = True
			else:
				keyPressed.append(evt.key)
		elif evt.type == pygame.KEYUP:
			keyPressed.remove(evt.key)
			
	if pygame.K_w in keyPressed and pygame.K_a in keyPressed:
		#soldier_curstate = 'RUNNING'	# set soldier's state if moving
		#soldier_runstate = 4
		soldier_vel[1] = -1
		soldier_vel[0] = -1
	elif pygame.K_w in keyPressed and pygame.K_d in keyPressed:
		#soldier_curstate = 'RUNNING'
		#soldier_runstate = 5
		soldier_vel[1] = -1
		soldier_vel[0] = 1
	elif pygame.K_s in keyPressed and pygame.K_a in keyPressed:
		#soldier_curstate = 'RUNNING'
		#soldier_runstate = 6
		soldier_vel[1] = 1
		soldier_vel[0] = -1
	elif pygame.K_s in keyPressed and pygame.K_d in keyPressed:
		#soldier_curstate = 'RUNNING'
		#soldier_runstate = 7
		soldier_vel[1] = 1
		soldier_vel[0] = 1
	elif pygame.K_w in keyPressed:
		#soldier_curstate = 'RUNNING'
		#soldier_runstate = 0
		soldier_vel[1] = -1
	elif pygame.K_s in keyPressed:
		#soldier_curstate = 'RUNNING'
		#soldier_runstate = 2
		soldier_vel[1] = 1
	elif pygame.K_d in keyPressed:
		#soldier_curstate = 'RUNNING'
		#soldier_runstate = 1
		soldier_vel[0] = 1	
	elif pygame.K_a in keyPressed:
		#soldier_curstate = 'RUNNING'
		#soldier_runstate = 3
		soldier_vel[0] = -1
	
	if pygame.K_w not in keyPressed and pygame.K_s not in keyPressed:
		soldier_vel[1] = 0
	if pygame.K_d not in keyPressed and pygame.K_a not in keyPressed:
		soldier_vel[0] = 0
	
	
	
	dtime = clock.tick_busy_loop(100)
	
	vec_normalize(soldier_vel)
	vec_mul(soldier_vel, soldier_vel_mag)
	vec_mul(soldier_vel, dtime)
	vec_add(soldier_pos, soldier_vel)
	
	mouseX, mouseY = pygame.mouse.get_pos()
	mouse_angle = math.atan2(soldier_pos[0]-mouseX, soldier_pos[1]-mouseY)
	
	soldier_surface.blit(pygame.image.load("Soldier/MAN_MACHINEGUN_FIRE.gif").convert(),(soldier_pos))
	
	pygame.transform.rotate(soldier_surface, mouse_angle)
	
	#window.blit(pygame.image.load("background.jpg").convert(),(0,0))
	
	window.blit(soldier_surface,(soldier_pos))
	
	
	pygame.display.flip()
			
pygame.quit()

[Cyrops]

I'm just curious, what is "image rotation towards the mouse"?

[rojam2]

I'm just curious, what is "image rotation towards the mouse"?

So imagine you're playing this game. if you want to move up, press W, left press A so on and so forth. Then wherever your mouse is on the screen, that's the direction your player will be facing.

[Iamanerd]

Take a look at python documentation: http://pygame.org/docs/ref/transform...ansform.rotate
Also this might be of help to you:

for event in pygame.event.get():
    if event.type == MOUSEMOTION:
        mousex, mousey = event.pos
        # build a vector between player position and mouse position
        moveVector = (mousex-playerx, mousey-playery)

        """
        compute the angle of moveVector from current vector that player is facing (faceVector).
        you should be keeping and updating this unit vector, with each mouse motion
        assume you have initial facing vector as (1,0) - facing East
        """

        # compute angle as in [1]

        # rotate the image to that angle and update faceVector

Might need to look up finding an angle between two vectors if you haven't done it before.