Created
August 30, 2011 14:20
-
-
Save Orpheon/1181002 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
def characterHitObstacle(character, wallmask): | |
newX = character.x | |
newY = character.y | |
oldX = character.x-character.hspeed | |
oldY = character.y-character.vspeed | |
hspeed = character.hspeed | |
vspeed = character.vspeed | |
length = lengthdir(hspeed, vspeed) | |
if length == 0:# You haven't moved; if this happens something went wrong | |
character.x = oldX | |
character.y = oldY | |
return False | |
# hs and vs is the normalized vector of hspeed and vspeed. | |
hs = character.hspeed/length | |
vs = character.vspeed/length | |
i = 0 | |
while objectCheckCollision(character, wallmask) and i < length: | |
character.x = newX-(hs*i) | |
character.y = newY-(vs*i) | |
i += 1 | |
# The character got pushed out, but now we need to let him move in the directions he's allowed to move. | |
character.x += sign(character.hspeed) | |
if objectCheckCollision(character, wallmask): | |
# There's empty space on the left/right | |
# Kill all vertical movement | |
character.vspeed = 0 | |
i = 0 | |
while i <= hspeed: | |
character.x = newX+(sign(character.hspeed)*i) | |
# If the new position has met a wall too: | |
if objectCheckCollision(character, wallmask): | |
character.x = newX+(sign(character.hspeed)*(i-1)) | |
break | |
else: | |
character.x -= sign(character.hspeed) | |
character.y += sign(character.vspeed) | |
if objectCheckCollision(character, wallmask): | |
# There's empty space on the left/right | |
# Kill all vertical movement | |
character.hspeed = 0 | |
i = 0 | |
while i <= vspeed: | |
character.y = newY+(sign(character.vspeed)*i) | |
# If the new position has met a wall too: | |
if objectCheckCollision(character, wallmask): | |
character.y = newY+(sign(character.vspeed)*(i-1)) | |
break | |
character.y -= sign(character.vspeed) | |
# character.hspeed = 0 | |
# character.vspeed = 0 | |
character.hspeed = oldX-character.x | |
character.vspeed = oldY-character.y | |
return True |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment