[WIP] some demos

demos/old_sokoban.lua

@@ -0,0 +1,161 @@
+FLOOR = 0
+GOAL = 1
+BOX = 2
+PLAYER = 4
+WALL = 7
+
+function init()
+    mode(2)
+    level=1
+    player={}
+    menu.init()
+end
+
+-- ====================================================================================================
+-- MENU (game state)
+-- ====================================================================================================
+blink=0
+
+menu={
+    init = function()
+        update=menu.update
+    end,
+
+    update = function()
+        color(15,0) cls()
+        ink(1)  print("\x20\x20\x20\x87\x81\x87\x85\x85\x85\x87\x85\x87\x85\x87\x85\x87\x84\x20\x20\x20",0,2)
+        ink(9)  print("\x20\x20\x20\x83\x85\x85\x85\x8D\x81\x85\x85\x87\x84\x8D\x85\x85\x85\x20\x20\x20",0,3)
+        ink(11) print("\x20\x20\x20\x83\x81\x83\x81\x81\x81\x83\x81\x83\x81\x81\x81\x81\x81\x20\x20\x20",0,4)
+        ink(15*flr((blink%60)/30)) print("PRESS SPACE TO PLAY",1,9)
+        blink=blink+1
+
+        if btnp(KEY_SPACE) then
+            level=1
+            game.init()
+        end
+    end
+}
+
+-- ====================================================================================================
+-- GAME (game state)
+-- ====================================================================================================
+game={
+    init = function()
+        update=game.update
+        level.load_from_string("####|# .#|#  ###|#*@  #|#  $ #|#  ###|####")
+    end,
+    
+    update = function()
+        border(0)
+        color(1,0)
+        cls()
+        level.draw()
+    
+        if btnp(KEY_UP) then level.try_move(0,-1)
+        elseif btnp(KEY_DOWN) then level.try_move(0,1)
+        elseif btnp(KEY_LEFT) then level.try_move(-1,0)
+        elseif btnp(KEY_RIGHT) then level.try_move(1,0)
+        end
+    end
+}
+
+-- ====================================================================================================
+-- LOADING (game state)
+-- ====================================================================================================
+loading = {
+    init = function()
+        border(15)
+        update=loading.update
+        wait=120
+    end
+    
+    function inbetween_update()
+        color(15,0)
+        cls()
+        print("LEVEL "..level,6,6)
+        print("GOOD JOB!",4,8)
+        wait=wait-1
+        if wait==0 then
+            level=level+1
+            game_init()
+        end
+    end
+}
+
+function level_load_from_string(str)
+    map={}
+    local pos=0
+    local y,x=1,1
+    local maxx=0
+    map[y] = {}
+    while pos<#str do
+        local chr = ascii(str,pos)
+        if chr == 35 then map[y][x] = WALL end
+        if chr == 64 then player.x,player.y=x,y map[y][x] = FLOOR end
+        if chr == 43 then player.x,player.y=x,y map[y][x] = GOAL end
+        if chr == 36 then map[y][x] = BOX end
+        if chr == 42 then map[y][x] = GOAL+BOX end
+        if chr == 46 then map[y][x] = GOAL end
+        if chr == 32 then map[y][x] = FLOOR end
+        if chr == 124 then
+            y=y+1
+            map[y] = {}
+            if maxx < x then maxx=x end
+            x=0
+        end
+        pos=pos+1
+        x=x+1
+    end
+    ox = flr((20-maxx)/2)
+    oy = flr((15-y)/2)
+end
+
+function level_draw()
+    for y=1,#map do
+        for x=1,#map[y] do
+            if map[y][x] == WALL then color(4,15) print("\127",ox+x-1,oy+y-1)
+            elseif map[y][x] == BOX then color(0,6) print("\016",ox+x-1,oy+y-1)
+            elseif map[y][x] == BOX+GOAL then color(0,4) print("\016",ox+x-1,oy+y-1)
+            elseif map[y][x] == GOAL then color(4,0) print("\144",ox+x-1,oy+y-1)
+            end
+        end
+    end
+    color(15,0) print("\248",ox+player.x-1,oy+player.y-1)
+end
+
+function try_move(x,y)
+    if is_empty(x,y) then
+        move_player(x,y)
+    elseif is_box(x,y) and is_empty(x*2,y*2) then
+        move_box(x,y)
+    end
+end
+
+function is_empty(x,y)
+    return map[player.y+y][player.x+x] < 2
+end
+
+function is_box(x,y)
+    return map[player.y+y][player.x+x] < 4
+end
+
+function move_player(x,y)
+    player.x=player.x+x
+    player.y=player.y+y 
+end
+
+function move_box(x,y)
+    map[player.y+y*2][player.x+x*2] = map[player.y+y*2][player.x+x*2] + BOX
+    map[player.y+y][player.x+x] = map[player.y+y][player.x+x] - BOX
+    move_player(x,y)
+    check_finished()
+end
+
+function check_finished()
+    for y=1,#map do
+        for x=1,#map[y] do
+            if map[y][x] == GOAL then return end
+        end
+    end
+    inbetween_init()
+end