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Added bullet/bullet collision

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This commit is contained in:
Matthias Schiffer 2010-03-16 02:34:31 +01:00
parent 90b8d87e02
commit 98ae7f48c5
2 changed files with 25 additions and 5 deletions
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10
src/Collision.hs
View file

@ -1,7 +1,9 @@
module Collision ( collisionTankBorder
, collisionBulletBullet
) where
import Tank
import Game
import Data.Fixed
import Data.Ratio
@ -12,6 +14,9 @@ tankWidth = 0.95
tankLength :: Micro
tankLength = 0.95
bulletDiameter :: Micro
bulletDiameter = 0.2
collisionTankBorder :: Micro -> Micro -> Tank -> Tank
collisionTankBorder lw lh tank = tank {tankX = newx, tankY = newy}
where
@ -39,3 +44,8 @@ collisionTankBorder lw lh tank = tank {tankX = newx, tankY = newy}
newx = (tankX tank) + dx
newy = (tankY tank) + dy
collisionBulletBullet :: (Bullet, Bullet) -> (Bullet, Bullet) -> Bool
collisionBulletBullet (b1, b1') (b2, b2') = distancesq < (bulletDiameter^2)
where
distancesq = (bulletX b1' - bulletX b2')^2 + (bulletY b1' - bulletY b2')^2

20
src/Simulation.hs
View file

@ -121,12 +121,22 @@ simulationStep = do
modify $ \state -> state {players = p}
lift $ modify $ \state ->
let thebullets = map (runState $ updateBullet state) $ newbullets ++ bullets state
thetanks = map (\(tank, n) -> tank {tankBulletsLeft = (tankBulletsLeft tank) + (countLostTankBullets n thebullets)}) $ zip newtanks [0..]
in state {tanks = thetanks, bullets = map snd . filter fst $ thebullets}
let thebullets = map (runState $ updateBullet state) $ bullets state
leftbullets = collideBullets $ zipWith (\(left, bullet') bullet -> (left, bullet, bullet')) thebullets $ bullets state
thetanks = map (\(tank, n) -> tank {tankBulletsLeft = (tankBulletsLeft tank) + (countLostTankBullets n leftbullets)}) $ zip newtanks [0..]
in state {tanks = thetanks, bullets = newbullets ++ (map snd . filter fst $ leftbullets)}
where
updateTank' game (player, tank) = let (p, angle, move, aangle, bullet) = playerUpdate player tank
collideBullets [] = []
collideBullets ((left, bullet, bullet'):bs) = let (c, ls) = collideBullet bullet bullet' bs
in (left && not c, bullet'):(collideBullets ls)
collideBullet bullet bullet' bs = let cs = map (\(left, b, b') -> (left, collisionBulletBullet (bullet, bullet') (b, b'), b, b')) bs
collided = any (\(_,c,_,_) -> c) cs
left = map (\(left, c, b, b') -> (left && not c, b, b')) $ cs
in (collided, left)
updateTank' game (player, tank) = let (p, angle, move, aangle, shoot) = playerUpdate player tank
t = execState (updateTank game angle move aangle) tank
in (p, t, bullet)
in (p, t, shoot)
countLostTankBullets n (x:xs) = (if ((not . fst $ x) && (n == (bulletTank . snd $ x))) then 1 else 0) + (countLostTankBullets n xs)
countLostTankBullets n [] = 0