-- title: game title
-- author: game developer, email, etc.
-- desc: short description
-- site: website link
-- license: MIT License (change this to your license of choice)
-- version: 0.1
-- script: lua
-- TODO:
-- - Fix warp system, be able to add more warps easier
-- - Princess follow dragon
-- - Enemies, placement, and HP
-- - Bullet damage
-- - Game ending
x=96; y=24 -- Player coordinates
playerspr = 1 -- Player sprite
pvelx=0; pvely=0 -- Player velocity
playerhealth=100 -- Player health
bx=-100; by=-100 -- Bullet coordinates
bvelx=0; bvely=0 -- Bullet velocity
mapx=0; mapy=0 -- Current map location
-- HELPER FUNCTIONS ------------------------------
function IsOnThisMap( obj )
return obj.mapX == mapx and obj.mapY == mapy
end
function GetDistance( x1, y1, x2, y2 )
return math.sqrt( ( x2 - x1 )^2 + ( y2 - y1 )^2 )
end
-- DEBUG -----------------------------------------
function Debug( title, thing, x, y, level )
print( title .. ": " .. type(thing), x + (level*8), y)
if thing == nil then
return
end
for key, value in pairs( thing ) do
y = y + 8
if type( value ) == "table" then
Debug( key, value, x + (level*8), y, level+1 )
else
print( key .. "=" .. value, x + (level*8), y )
end
end
end
function Debug2()
print( "MAP: " .. mapx .. "," .. mapy, 2, 128 )
print( "PLAYER: " .. x .. "," .. y, 50, 128 )
end
-- WARP HANDLER ----------------------------------
warps = {}
warptimer = 0
function CreateWarp( tile1X, tile1Y, tile2X, tile2Y )
newWarp = {}
newWarp.tileX = tile1X
newWarp.tileY = tile1Y
newWarp.mapX = math.floor( newWarp.tileX / 30 ) * 30
newWarp.mapY = math.floor( newWarp.tileY / 16 ) * 16
newWarp.x = (newWarp.tileX - newWarp.mapX)*8
newWarp.y = (newWarp.tileY - newWarp.mapY)*8
newWarp.tileDestX = tile2X
newWarp.tileDestY = tile2Y
newWarp.mapDestX = math.floor( newWarp.tileDestX / 30 ) * 30
newWarp.mapDestY = math.floor( newWarp.tileDestY / 16 ) * 16
newWarp.xDest = (newWarp.tileDestX - newWarp.mapDestX)*8
newWarp.yDest = (newWarp.tileDestY - newWarp.mapDestY)*8
table.insert( warps, newWarp )
end
function HandleWarps()
if warptimer == 0 then
for id, wp in pairs( warps ) do
if IsOnThisMap( wp ) then
if GetDistance( x, y, wp.x, wp.y ) <= 8 then
mapx = wp.mapDestX; mapy = wp.mapDestY
x = wp.xDest; y = wp.yDest
warptimer = 100
end
end -- IsOnMap
end -- for
elseif warptimer > 0 then
warptimer = warptimer - 1
end -- warptimer
end -- function
-- ENEMY HANDLER ---------------------------------
enemies = {}
function CreateEnemy( mapX, mapY, tileX, tileY, health, imgTopLeft, imgTopRight, imgBottomLeft, imgBottomRight )
newEnemy = {}
newEnemy.mapX = mapX
newEnemy.mapY = mapY
newEnemy.tileX = tileX
newEnemy.tileY = tileY
newEnemy.x = (tileX - mapX) * 8
newEnemy.y = (tileY - mapY) * 8
newEnemy.health = health
newEnemy.imgTopLeft = imgTopLeft
newEnemy.imgTopRight = imgTopRight
newEnemy.imgBottomLeft = imgBottomLeft
newEnemy.imgBottomRight = imgBottomRight
table.insert( enemies, newEnemy )
end
function UpdateEnemies()
for id, en in pairs( enemies ) do
if IsOnThisMap( en ) then
-- Enemy behavior
end
end
end
function DrawEnemies()
for id, en in pairs( enemies ) do
if IsOnThisMap( en ) then
spr( en.imgTopLeft, en.x-4, en.y-4, 0 )
spr( en.imgTopRight, en.x+4, en.y-4, 0 )
spr( en.imgBottomLeft, en.x-4, en.y+4, 0 )
spr( en.imgBottomRight, en.x+4, en.y+4, 0 )
print( en.health, en.x, en.y - 8 )
end
end
end
-- SETUP -----------------------------------------
-- MAPX MAPY TILEX TILEY HEALTH SPR1 SPR2 SPR3 SPR4
CreateEnemy( 0, 0, 1, 1, 3, 13, 14, 29, 30 )
CreateEnemy( 30, 0, 34, 4, 3, 13, 14, 29, 30 )
-- TILE1X, TILE1Y, TILE2X, TILE2Y
CreateWarp( 57, 9, 62, 10 )
-- GAME LOOP -------------------------------------
function TIC()
map (mapx,mapy) -- Draw the map
spr (playerspr,x,y,10) -- Draw the player sprite
spr (playerspr+1,x+8,y,10)
spr (playerspr+16,x,y+8,10)
spr (playerspr+17,x+8,y+8,10)
print(playerhealth,x,y-8) -- Draw player health
spr (81,bx,by,0) -- Draw the bullet
UpdateEnemies()
DrawEnemies()
HandleWarps()
--Debug( "warps", warps, 0, 0, 0 )
--Debug2()
-- PLAYER MOVEMENT
if btn(0) then -- Pressing UP arrow
y=y-1
pvelx=0; pvely=-1
end
if btn(1) then -- Pressing DOWN arrow
y=y+1
pvelx=0; pvely=1
end
if btn(2) then -- Pressing LEFT arrow
x=x-1
playerspr = 1
pvelx=-1; pvely=0
end
if btn(3) then x=x+1 -- Pressing RIGHT arrow
playerspr = 97
pvelx=1; pvely=0
end
-- WALKING OFF THE SIDE OF THE SCREEN
if x > 240 then
mapx = mapx + 30
x = 0
elseif x<-8 then
mapx = mapx - 30
x = 240-8
elseif y > 136 then
mapy = mapy + 17
y = 0
elseif y <-8 then
mapy = mapy - 17
y = 136-8
end
-- PLAYER ATTACK
if btn(4) and bx==-100 then
bx=x; by=y
bvelx=pvelx*2; bvely = pvely*2
end
-- BULLET MOVEMENT
if bx ~= -100 then
bx=bx+bvelx
by=by+bvely
end
-- REMOVE BULLET
if bx < -20 or bx > 240 or by < -20 or by > 136
then bx = -100
end
end
--
-- 001:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa4aaaaaa4aaaaa222aaa22022a2
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--
--
--
-- 000:00000000ffffffff00000000ffffffff
-- 001:0123456789abcdeffedcba9876543210
-- 002:0123456789abcdef0123456789abcdef
--
--
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--
--
-- 000:100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
--
--
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--