From bab3bda5642121f85cf1c3be9f736ee9f4ee16d3 Mon Sep 17 00:00:00 2001
From: makiki <makiki-the-kobold@proton.me>
Date: Sat, 17 Aug 2024 18:37:43 +0200
Subject: [PATCH] basic engine done

---
 conf.lua                    |  51 +++++++
 game.lua                    | 262 ++++++++++++++++++++++++++++++++++++
 leveldata.lua               | 105 +++++++++++++++
 main.lua                    |  47 +++++++
 res/font/CREDITS.md         |   1 +
 res/font/VictoriaBold.png   | Bin 0 -> 3275 bytes
 res/font/digits.png         | Bin 0 -> 8510 bytes
 res/sprite/crown.png        | Bin 0 -> 1571 bytes
 res/sprite/elixir.png       | Bin 0 -> 5182 bytes
 res/sprite/enemy.png        | Bin 0 -> 5803 bytes
 res/sprite/enemy_neg.png    | Bin 0 -> 6658 bytes
 res/sprite/gate.png         | Bin 0 -> 5507 bytes
 res/sprite/pickaxe.png      | Bin 0 -> 5172 bytes
 res/sprite/pickaxe_held.png | Bin 0 -> 600 bytes
 res/sprite/player.png       | Bin 0 -> 4421 bytes
 res/sprite/stairs_down.png  | Bin 0 -> 635 bytes
 res/sprite/stairs_up.png    | Bin 0 -> 4396 bytes
 res/sprite/vorpal_held.png  | Bin 0 -> 586 bytes
 res/sprite/vorpal_sword.png | Bin 0 -> 6974 bytes
 util.lua                    |  20 +++
 20 files changed, 486 insertions(+)
 create mode 100644 conf.lua
 create mode 100644 game.lua
 create mode 100644 leveldata.lua
 create mode 100644 main.lua
 create mode 100644 res/font/CREDITS.md
 create mode 100644 res/font/VictoriaBold.png
 create mode 100644 res/font/digits.png
 create mode 100644 res/sprite/crown.png
 create mode 100644 res/sprite/elixir.png
 create mode 100644 res/sprite/enemy.png
 create mode 100644 res/sprite/enemy_neg.png
 create mode 100644 res/sprite/gate.png
 create mode 100644 res/sprite/pickaxe.png
 create mode 100644 res/sprite/pickaxe_held.png
 create mode 100644 res/sprite/player.png
 create mode 100644 res/sprite/stairs_down.png
 create mode 100644 res/sprite/stairs_up.png
 create mode 100644 res/sprite/vorpal_held.png
 create mode 100644 res/sprite/vorpal_sword.png
 create mode 100644 util.lua

diff --git a/conf.lua b/conf.lua
new file mode 100644
index 0000000..cbb77f1
--- /dev/null
+++ b/conf.lua
@@ -0,0 +1,51 @@
+function love.conf(t)
+    t.identity = nil                    -- The name of the save directory (string)
+    t.appendidentity = false            -- Search files in source directory before save directory (boolean)
+    t.version = "11.5"                  -- The LÖVE version this game was made for (string)
+    t.console = false                   -- Attach a console (boolean, Windows only)
+    t.accelerometerjoystick = true      -- Enable the accelerometer on iOS and Android by exposing it as a Joystick (boolean)
+    t.externalstorage = false           -- True to save files (and read from the save directory) in external storage on Android (boolean) 
+    t.gammacorrect = false              -- Enable gamma-correct rendering, when supported by the system (boolean)
+ 
+    t.audio.mic = false                 -- Request and use microphone capabilities in Android (boolean)
+    t.audio.mixwithsystem = true        -- Keep background music playing when opening LOVE (boolean, iOS and Android only)
+ 
+    t.window.title = "GMTK2024"         -- The window title (string)
+    t.window.icon = nil                 -- Filepath to an image to use as the window's icon (string)
+    t.window.width = 496                -- The window width (number)
+    t.window.height = 518               -- The window height (number)
+    t.window.borderless = false         -- Remove all border visuals from the window (boolean)
+    t.window.resizable = true           -- Let the window be user-resizable (boolean)
+    t.window.minwidth = 248             -- Minimum window width if the window is resizable (number)
+    t.window.minheight = 257            -- Minimum window height if the window is resizable (number)
+    t.window.fullscreen = false         -- Enable fullscreen (boolean)
+    t.window.fullscreentype = "desktop" -- Choose between "desktop" fullscreen or "exclusive" fullscreen mode (string)
+    t.window.vsync = 1                  -- Vertical sync mode (number)
+    t.window.msaa = 0                   -- The number of samples to use with multi-sampled antialiasing (number)
+    t.window.depth = nil                -- The number of bits per sample in the depth buffer
+    t.window.stencil = nil              -- The number of bits per sample in the stencil buffer
+    t.window.display = 1                -- Index of the monitor to show the window in (number)
+    t.window.highdpi = false            -- Enable high-dpi mode for the window on a Retina display (boolean)
+    t.window.usedpiscale = true         -- Enable automatic DPI scaling when highdpi is set to true as well (boolean)
+    t.window.x = nil                    -- The x-coordinate of the window's position in the specified display (number)
+    t.window.y = nil                    -- The y-coordinate of the window's position in the specified display (number)
+ 
+    t.modules.audio = true              -- Enable the audio module (boolean)
+    t.modules.data = true               -- Enable the data module (boolean)
+    t.modules.event = true              -- Enable the event module (boolean)
+    t.modules.font = true               -- Enable the font module (boolean)
+    t.modules.graphics = true           -- Enable the graphics module (boolean)
+    t.modules.image = true              -- Enable the image module (boolean)
+    t.modules.joystick = false           -- Enable the joystick module (boolean)
+    t.modules.keyboard = true           -- Enable the keyboard module (boolean)
+    t.modules.math = true               -- Enable the math module (boolean)
+    t.modules.mouse = true              -- Enable the mouse module (boolean)
+    t.modules.physics = false            -- Enable the physics module (boolean)
+    t.modules.sound = true              -- Enable the sound module (boolean)
+    t.modules.system = true             -- Enable the system module (boolean)
+    t.modules.thread = false             -- Enable the thread module (boolean)
+    t.modules.timer = true              -- Enable the timer module (boolean), Disabling it will result 0 delta time in love.update
+    t.modules.touch = true              -- Enable the touch module (boolean)
+    t.modules.video = true              -- Enable the video module (boolean)
+    t.modules.window = true             -- Enable the window module (boolean)
+end
\ No newline at end of file
diff --git a/game.lua b/game.lua
new file mode 100644
index 0000000..0b3c0ff
--- /dev/null
+++ b/game.lua
@@ -0,0 +1,262 @@
+local LevelData = require "leveldata"
+
+local Game = {}
+
+Game.__index = Game
+
+MAX_POWER = 999999999999
+
+local player_spr = love.graphics.newImage("res/sprite/player.png")
+local ent_spr = {
+    enemy = love.graphics.newImage("res/sprite/enemy.png"),
+    enemy_neg = love.graphics.newImage("res/sprite/enemy_neg.png"),
+    elixir = love.graphics.newImage("res/sprite/elixir.png"),
+    gate = love.graphics.newImage("res/sprite/gate.png"),
+    vorpal = love.graphics.newImage("res/sprite/vorpal_sword.png"),
+    pickaxe = love.graphics.newImage("res/sprite/pickaxe.png"),
+    stairs_up = love.graphics.newImage("res/sprite/stairs_up.png"),
+    stairs_down = love.graphics.newImage("res/sprite/stairs_down.png"),
+}
+
+local held_spr = {
+    vorpal = love.graphics.newImage("res/sprite/vorpal_held.png"),
+    pickaxe = love.graphics.newImage("res/sprite/pickaxe_held.png"),
+}
+
+function Game.new()
+    local self = {
+        player_power = 5,
+        player_x = 8,
+        player_y = 15,
+        player_item = nil,
+        floor = 1,
+        level_data = LevelData:new(),
+        undo_history = {},
+    }
+    setmetatable(self, Game)
+    return self
+end
+
+function Game:keypressed(key,scancode,isrepeat)
+    if true then
+        if scancode=="up" or scancode=="k" or scancode=="w" or scancode=="kp8" then
+            self:step(0,-1)
+        elseif scancode=="down" or scancode=="j" or scancode=="s" or scancode=="kp2" then
+            self:step(0,1)
+        elseif scancode=="left" or scancode=="h" or scancode=="a" or scancode=="kp4" then
+            self:step(-1,0)
+        elseif scancode=="right" or scancode=="l" or scancode=="d" or scancode=="kp6" then
+            self:step(1,0)
+        elseif scancode=="z" then
+            self:undo()
+        end
+    end
+end
+
+function Game:step(ox,oy)
+    tx = self.player_x + ox
+    ty = self.player_y + oy
+    --check if border
+    if tx < 1 or ty < 1 or tx > 15 or ty > 15 then
+        return
+    end
+    -- check if reinforced wall
+    if self.level_data[self.floor].walls[ty][tx]==2 then
+        return
+    end
+    -- check if normal wall
+    if self.level_data[self.floor].walls[ty][tx]==1 then
+        if self.player_item == "pickaxe" then
+            --push to undo memory
+            --remove wall
+            self.level_data[self.floor].walls[ty][tx]=0
+            --remove item
+            self.player_item = nil
+        end
+        return
+    end
+    --check if entity
+    local move_legal = true
+    local entities = self.level_data[self.floor].entities
+    for i=1,#entities do
+        if entities[i].x == tx and entities[i].y == ty then
+            if entities[i].type == nil then --removed entity
+                break
+            elseif entities[i].type == "enemy" then
+                if self.player_item == "vorpal" then
+                    --push to undo memory
+                    --remove entity
+                    entities[i].type = nil
+                    --remove item
+                    self.player_item = nil
+                    break
+                elseif entities[i].value >= self.player_power then
+                    return
+                else
+                    --push to undo memory
+                    --remove entity
+                    entities[i].type = nil
+                    --absorb power
+                    self.player_power = self.player_power + entities[i].value
+                    break
+                end
+            elseif entities[i].type == "enemy_neg" then
+                if self.player_item == "vorpal" then
+                    --push to undo memory
+                    --remove entity
+                    entities[i].type = nil
+                    --remove item
+                    self.player_item = nil
+                    break
+                elseif entities[i].value >= self.player_power then
+                    return
+                else
+                    --push to undo memory
+                    --remove entity
+                    entities[i].type = nil
+                    --absorb power
+                    self.player_power = self.player_power - entities[i].value
+                    break
+                end
+            elseif entities[i].type == "elixir" then
+                --push to undo memory
+                --remove entity
+                entities[i].type = nil
+                --double power
+                self.player_power = self.player_power * 2
+                break
+            elseif entities[i].type == "gate" then
+                --push to undo memory
+                --remove entity
+                entities[i].type = nil
+                --divide power by two
+                self.player_power = math.ceil(self.player_power / 2)
+                break
+            elseif entities[i].type == "pickaxe" then
+                --can't pick up if you have an item
+                if self.player_item then
+                    return
+                end
+                --push to undo memory
+                --remove entity
+                entities[i].type = nil
+                --equip item
+                self.player_item = "pickaxe"
+                break
+            elseif entities[i].type == "vorpal" then
+                --can't pick up if you have an item
+                if self.player_item then
+                    return
+                end
+                --push to undo memory
+                --remove entity
+                entities[i].type = nil
+                --equip item
+                self.player_item = "vorpal"
+                break
+            elseif entities[i].type == "stairs_up" then
+                self.floor = self.floor + 1
+                break
+            elseif entities[i].type == "stairs_down" then
+                self.floor = self.floor - 1
+                break
+            else
+                return
+            end
+        end
+    end
+    --ensure the power cap is upheld to
+    self.player_power = math.min(self.player_power,MAX_POWER)
+    --move if possible
+    if move_legal then
+        self.player_x = tx
+        self.player_y = ty
+    end
+end
+    
+function Game:undo()
+    if #self.undo_history == 0 then
+        return
+    end
+    
+end
+
+function Game:update(dt)
+end
+
+function Game:draw()
+    love.graphics.setLineWidth(2)
+    love.graphics.push()
+
+    --floor and walls
+    love.graphics.setColor(1,1,1,1)
+    love.graphics.rectangle("fill",0,0,248,248)
+    local walls = self.level_data[self.floor].walls
+    for x=1,15 do
+        for y=1,15 do
+            if walls[y][x]==2 then
+                love.graphics.setColor(1,1,1,1)
+            elseif walls[y][x]==1 and (x+y+self.floor)%2==0 then
+                love.graphics.setColor(0.85,0.85,0.85,1)
+            elseif walls[y][x]==1 then
+                love.graphics.setColor(0.95,0.95,0.95,1)
+            elseif (x+y+self.floor)%2==0 then
+                love.graphics.setColor(0.05,0.05,0.05,1)
+            else
+                love.graphics.setColor(0.15,0.15,0.15,1)
+            end
+            love.graphics.rectangle("fill",x*16-12,y*16-12,16,16)
+            if walls[y][x]==2 then
+                love.graphics.setColor(0,0,0,1)
+                love.graphics.rectangle("fill",x*16-10,y*16-10,2,2)
+                love.graphics.rectangle("fill",x*16-10,y*16,2,2)
+                love.graphics.rectangle("fill",x*16,y*16-10,2,2)
+                love.graphics.rectangle("fill",x*16,y*16,2,2)
+            end
+        end
+    end
+
+    --entities
+    love.graphics.setFont(FONT_DIGITS)
+    local entities = self.level_data[self.floor].entities
+    for i=1,#entities do
+        if entities[i].type then
+            --sprite
+            love.graphics.setColor(1,1,1,1)
+            love.graphics.draw(ent_spr[entities[i].type],entities[i].x*16-12,entities[i].y*16-12)
+            --value
+            if entities[i].value_str then
+                love.graphics.setColor(0,0,0,1)
+                love.graphics.printf(entities[i].value_str,entities[i].x*16-10,entities[i].y*16-1,16,"right")
+                love.graphics.printf(entities[i].value_str,entities[i].x*16-12,entities[i].y*16-1,16,"right")
+                love.graphics.printf(entities[i].value_str,entities[i].x*16-11,entities[i].y*16,16,"right")
+                love.graphics.printf(entities[i].value_str,entities[i].x*16-11,entities[i].y*16-2,16,"right")
+                love.graphics.printf(entities[i].value_str,entities[i].x*16-10,entities[i].y*16,16,"right")
+                love.graphics.printf(entities[i].value_str,entities[i].x*16-10,entities[i].y*16-2,16,"right")
+                love.graphics.printf(entities[i].value_str,entities[i].x*16-12,entities[i].y*16,16,"right")
+                love.graphics.printf(entities[i].value_str,entities[i].x*16-12,entities[i].y*16-2,16,"right")
+                love.graphics.setColor(1,1,1,1)
+                love.graphics.printf(entities[i].value_str,entities[i].x*16-11,entities[i].y*16-1,16,"right")
+            end
+        end
+    end
+
+    --player
+    love.graphics.setColor(1,1,1,1)
+    love.graphics.draw(player_spr,self.player_x*16-12,self.player_y*16-12)
+
+    --player info
+    love.graphics.setColor(1,1,1,1)
+    love.graphics.setFont(FONT_STANDARD)
+    love.graphics.print("FLOOR "..(self.floor>9 and self.floor or " "..self.floor).."     POWER:"..player_power_to_string(self.player_power),1,249)
+
+    --held item
+    if self.player_item then
+         love.graphics.draw(held_spr[self.player_item],72,250)
+    end
+
+    love.graphics.pop()
+    love.graphics.setColor(1,1,1,1)
+end
+
+return Game
diff --git a/leveldata.lua b/leveldata.lua
new file mode 100644
index 0000000..dac8f8c
--- /dev/null
+++ b/leveldata.lua
@@ -0,0 +1,105 @@
+LevelData = {}
+
+LevelData.__index = LevelData
+
+function LevelData.new()
+    local self = {
+        { --floor 1
+            walls = {
+                {0,0,0,0,0,1,2,2,2,1,0,0,0,0,0},
+                {0,0,0,0,0,0,2,0,2,0,0,0,0,0,0},
+                {1,1,1,1,1,0,2,0,2,0,1,1,1,1,1},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,2,2,2},
+                {0,0,0,0,0,0,0,0,0,0,0,0,1,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,2,0,0},
+            },
+            entities = {
+                {type = "enemy", x = 1, y = 1, value_str = "1"},
+                {type = "enemy", x = 2, y = 1, value_str = "2"},
+                {type = "enemy", x = 3, y = 1, value_str = "3"},
+                {type = "enemy", x = 4, y = 1, value_str = "4"},
+                {type = "enemy", x = 5, y = 1, value_str = "5"},
+                {type = "enemy_neg", x = 11, y = 1, value_str = "1"},
+                {type = "enemy_neg", x = 12, y = 1, value_str = "2"},
+                {type = "enemy_neg", x = 13, y = 1, value_str = "3"},
+                {type = "enemy_neg", x = 14, y = 1, value_str = "4"},
+                {type = "enemy_neg", x = 15, y = 1, value_str = "5"},
+
+                {type = "elixir", x = 14, y = 14},
+                {type = "elixir", x = 14, y = 15},
+                {type = "elixir", x = 15, y = 14},
+                {type = "elixir", x = 15, y = 15},
+
+                {type = "stairs_up", x = 8, y = 2},
+                {type = "gate", x = 8, y = 3},
+            },
+            textboxes = {}
+        },
+        { --floor 2
+            walls = {
+                {0,0,0,0,0,0,2,2,2,0,0,0,0,0,0},
+                {0,0,0,0,0,0,2,0,2,0,0,0,0,0,0},
+                {0,0,0,0,0,0,2,0,2,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
+                {2,2,2,0,0,0,0,0,0,0,0,0,2,2,2},
+                {2,1,2,0,0,0,0,0,0,0,0,0,2,1,2},
+                {2,2,2,0,0,0,0,0,0,0,0,0,2,2,2},
+            },
+            entities = {
+                {type = "vorpal", x = 4, y = 8},
+                {type = "pickaxe", x = 12, y = 8},
+
+                {type = "stairs_down", x = 8, y = 2},
+            },
+            textboxes = {}
+        },
+    }
+
+    --convert value_str into value
+    for f=1,#self do
+        local entities = self[f].entities
+        for e=1,#entities do
+            if entities[e].value_str then
+                arr = {}
+                num = 0
+                for i=1,#entities[e].value_str do
+                    arr[i] = entities[e].value_str:sub(i,i)
+                end
+                for i=1,#arr do
+                    if arr[i]=="G" then
+                        num = num * 1000 * 1000 * 1000
+                    elseif arr[i]=="M" then
+                        num = num * 1000 * 1000
+                    elseif arr[i]=="k" then
+                        num = num * 1000
+                    else
+                        num = num*10+arr[i]
+                    end
+                end
+                -- print("converted value_str "..entities[e].value_str.." into value "..num)
+                entities[e].value = num
+            end
+        end
+    end
+    setmetatable(self, LevelData)
+    return self
+end
+
+return LevelData
\ No newline at end of file
diff --git a/main.lua b/main.lua
new file mode 100644
index 0000000..215f09a
--- /dev/null
+++ b/main.lua
@@ -0,0 +1,47 @@
+local bit = require "bit"
+local Game = require "game"
+
+require "util"
+
+BASE_RES_W = 248
+BASE_RES_H = 257
+
+FONT_CHARACTERS = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~"
+FONT_STANDARD = love.graphics.newImageFont("res/font/VictoriaBold.png", FONT_CHARACTERS, -1)
+
+DIGITFONT_CHARACTERS = "0123456789x[].kMG"
+FONT_DIGITS = love.graphics.newImageFont("res/font/digits.png", DIGITFONT_CHARACTERS, 1)
+
+love.keyboard.setKeyRepeat(true)
+love.graphics.setDefaultFilter("nearest","nearest",0)
+
+main_canvas = love.graphics.newCanvas()
+
+local game = Game.new()
+
+function love.keypressed(key,scancode,isrepeat)
+    game:keypressed(key,scancode,isrepeat)
+end
+
+function love.update(dt)
+    game:update(dt)
+end
+
+function love.draw()
+    love.graphics.setCanvas(main_canvas)
+    love.graphics.clear()
+    love.graphics.setLineWidth(2)
+
+    game:draw()
+
+    --draw canvas on the main window
+    love.graphics.setScissor()
+    love.graphics.setCanvas()
+    local w, h = love.graphics.getWidth(), love.graphics.getHeight()
+    local s = math.min(w/BASE_RES_W,h/BASE_RES_H)
+    local s = math.floor(s)
+    love.graphics.translate((w-BASE_RES_W*s)/2,(h-BASE_RES_H*s)/2)
+    love.graphics.scale(s, s)
+    love.graphics.clear()
+    love.graphics.draw(main_canvas)
+end
\ No newline at end of file
diff --git a/res/font/CREDITS.md b/res/font/CREDITS.md
new file mode 100644
index 0000000..8755ef8
--- /dev/null
+++ b/res/font/CREDITS.md
@@ -0,0 +1 @@
+The Victoria Bold bitmap font has been taken from https://opengameart.org/content/a-package-of-8-bit-fonts-for-grafx2-and-linux and it available under CC-0 (Public Domain) license.
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literal 0
HcmV?d00001

diff --git a/util.lua b/util.lua
new file mode 100644
index 0000000..9395b54
--- /dev/null
+++ b/util.lua
@@ -0,0 +1,20 @@
+function player_power_to_string(n)
+    str = ""
+    while n > 999 do
+        last_segment = n%1000
+        n = n - last_segment
+        if last_segment > 99 then
+            str = "." .. last_segment ..str
+        elseif last_segment > 9 then
+            str = ".0" .. last_segment ..str
+        else
+            str = ".00" .. last_segment ..str
+        end
+        n = n /1000
+    end
+    str = n..str
+    while #str < 16 do
+        str = " "..str
+    end
+    return str
+end
\ No newline at end of file