61 lines
2.1 KiB
Lua
61 lines
2.1 KiB
Lua
--because of repeated use i set two variables to
|
|
--hold the random function and the value 128
|
|
웃=rnd 😐=128
|
|
enemies={}
|
|
player_x=62♥=3◆=1✽={}
|
|
--quick little distance function
|
|
function distance(a,b,c,f)return abs(a-c)+abs(b-f)end
|
|
function _draw()
|
|
--the game logic if statement instead of a state machine
|
|
--encompasses all game logic
|
|
if ♥>0 do
|
|
--i use the modulo operator instead of a timer variable
|
|
if(t()%1==0)add(enemies,{x=웃(😐),y=0})
|
|
cls()
|
|
--draw the player
|
|
?"★",player_x,99,7
|
|
--draw the 'gui' with points and remaining hearts
|
|
?◆.."◆ "..♥.."♥",50,0
|
|
--iterate over all enemies
|
|
for j in all(enemies)do
|
|
--move them down
|
|
j.y+=1
|
|
--check whether they touched the player
|
|
if distance(j.x,j.y,player_x,99)<5 do
|
|
--move them off screen if they do instead of spending tokens on del()-
|
|
--i do that later
|
|
j.x=-9
|
|
♥-=1
|
|
end
|
|
--make the enemies harder to hit by adjusting their x position with sin(time())
|
|
if(j.x>9)j.x+=sin(t())
|
|
--iterate over the shots inside the enemey loop-which means shots get faster if more enemies are on screen,
|
|
--but it saves an extra loop
|
|
for i in all(✽)do
|
|
--draw the shots
|
|
?"◆",i.x,i.y,i.y%9
|
|
--move the shots up
|
|
i.y-=1
|
|
--check wheter they've hit any enemies,pushing them offscreen if needed
|
|
if(distance(i.x,i.y,j.x,j.y)<6)del(✽,i) j.x=-9 ◆+=1
|
|
end
|
|
--finally deleting the enemies that have gotten below the screen height,on or off screen
|
|
if(j.y>😐)del(enemies,j)
|
|
--draw the enemies
|
|
?"🐱",j.x,j.y,8
|
|
end
|
|
--spawn a shot based on a 'modulo-timer'
|
|
if(t()%1==0)add(✽,{x=player_x,y=90})
|
|
--stolen and slightly modified bit of code to handle the input
|
|
b=btn()
|
|
player_x+=(b\2%2-b%2)*2
|
|
for i=0,9 do
|
|
--draw 'stars' in random spots for that speedy feel
|
|
?".",웃(😐),웃(😐),10
|
|
end
|
|
else
|
|
--closing the game logic if statement
|
|
?"dead",55,60
|
|
end
|
|
end
|