Merge pull request 'character-rework' (#7) from character-rework into main

Reviewed-on: #7

lib/character/animation.lua

@@ -1,46 +0,0 @@
-local anim8 = require "lib.utils.anim8"
-
---- Скорость между кадрами в анимации
-local ANIMATION_SPEED = 0.1
-
-LEFT = -1
-RIGHT = 1
-
---- @class Animation
---- @field animationTable table<string, table>
---- @field animationGrid table
---- @field state "idle"|"run"|"hurt"|"attack"
---- @field side 1|-1
-local animation = {}
-animation.__index = animation
-
-local function new(id, spriteDir)
-    local anim = {
-        animationTable = {},
-        animationGrid = {}
-    }
-
-    -- n: name; i: image
-    for n, i in pairs(spriteDir) do
-        local aGrid = anim8.newGrid(96, 64, i:getWidth(), i:getHeight())
-        local tiles = '1-' .. math.ceil(i:getWidth() / 96)
-        anim.animationGrid[n] = aGrid(tiles, 1)
-    end
-
-    anim.state = "idle"
-    anim.side = RIGHT
-
-    return setmetatable(anim, animation)
-end
-
-function animation:getState()
-    return self.state
-end
-
---- @param state CharacterState
-function animation:setState(state, onLoop)
-    self.animationTable[state] = anim8.newAnimation(self.animationGrid[state], ANIMATION_SPEED, onLoop)
-    self.state = state
-end
-
-return { new = new }

lib/character/behaviors/behavior.lua

@@ -0,0 +1,20 @@
+--- Поведение персонажа. Их можно комбинировать как угодно, добавлять и заменять на лету...
+--- @class Behavior
+--- @field id string
+--- @field owner Character
+--- @field dependencies Behavior[]
+--- @field new fun(...) : self
+--- @field update fun(self, dt): nil
+--- @field draw fun(self): nil
+local behavior = {}
+behavior.__index = behavior
+behavior.id = "behavior"
+behavior.dependencies = {}
+
+function behavior.new() return setmetatable({}, behavior) end
+
+function behavior:update(dt) end
+
+function behavior:draw() end
+
+return behavior

lib/character/behaviors/map.lua

@@ -0,0 +1,77 @@
+local utils = require "lib.utils.utils"
+
+--- Отвечает за размещение и перемещение по локации
+--- @class MapBehavior : Behavior
+--- @field position Vec3
+--- @field runTarget Vec3 точка, в которую в данный момент бежит персонаж
+--- @field displayedPosition Vec3 точка, в которой персонаж отображается
+--- @field t0 number время начала движения для анимациии
+--- @field path Deque путь, по которому сейчас бежит персонаж
+--- @field size Vec3
+local mapBehavior = {}
+mapBehavior.__index = mapBehavior
+mapBehavior.id = "map"
+
+
+--- @param position? Vec3
+--- @param size? Vec3
+function mapBehavior.new(position, size)
+    return setmetatable({
+        position = position or Vec3({}),
+        displayedPosition = position or Vec3({}),
+        size = size or Vec3({ 1, 1 }),
+    }, mapBehavior)
+end
+
+--- @param path Deque
+function mapBehavior:followPath(path)
+    if path:is_empty() then return end
+    self.position = self.displayedPosition
+    self.owner:try(Tree.behaviors.sprite, function(sprite)
+        sprite:play("run", true)
+    end)
+    self.path = path;
+    ---@type Vec3
+    local nextCell = path:peek_front()
+    self:runTo(nextCell)
+    path:pop_front()
+end
+
+--- @param target Vec3
+function mapBehavior:runTo(target)
+    self.t0 = love.timer.getTime()
+    self.runTarget = target
+    self.owner:try(Tree.behaviors.sprite,
+        function(sprite)
+            if target.x < self.position.x then
+                sprite.side = Tree.behaviors.sprite.LEFT
+            elseif target.x > self.position.x then
+                sprite.side = Tree.behaviors.sprite.RIGHT
+            end
+        end
+    )
+end
+
+function mapBehavior:update(dt)
+    if self.runTarget then
+        local delta = love.timer.getTime() - self.t0 or love.timer.getTime()
+        local fraction = delta /
+            (0.5 * self.runTarget:subtract(self.position):length()) -- бежим одну клетку за 500 мс, по диагонали больше
+        if fraction >= 1 then                                       -- анимация перемещена завершена
+            self.position = self.runTarget
+            if not self.path:is_empty() then                        -- еще есть, куда бежать
+                self:runTo(self.path:peek_front())
+                self.path:pop_front()
+            else -- мы добежали до финальной цели
+                self.owner:try(Tree.behaviors.sprite, function(sprite)
+                    sprite:play("idle", true)
+                end)
+                self.runTarget = nil
+            end
+        else                                                                             -- анимация перемещения не завершена
+            self.displayedPosition = utils.lerp(self.position, self.runTarget, fraction) -- линейный интерполятор
+        end
+    end
+end
+
+return mapBehavior

lib/character/behaviors/spellcaster.lua

@@ -0,0 +1,25 @@
+--- @class SpellcasterBehavior : Behavior
+--- @field spellbook Spell[] собственный набор спеллов персонажа
+--- @field cast Spell | nil ссылка на активный спелл из спеллбука
+local behavior = {}
+behavior.__index = behavior
+behavior.id = "spellcaster"
+
+---@param spellbook Spell[] | nil
+---@return SpellcasterBehavior
+function behavior.new(spellbook)
+    local spb = require "lib.spellbook" --- @todo временное добавление ходьбы всем персонажам
+    local t = {}
+    t.spellbook = spellbook or spb.of { spb.walk }
+    return setmetatable(t, behavior)
+end
+
+function behavior:update(dt)
+    if self.cast then self.cast:update(self.owner, dt) end
+end
+
+function behavior:draw()
+    if self.cast then self.cast:draw() end
+end
+
+return behavior

lib/character/behaviors/sprite.lua

@@ -0,0 +1,70 @@
+local anim8 = require "lib.utils.anim8"
+
+--- @class SpriteBehavior : Behavior
+--- @field animationTable table<string, table>
+--- @field animationGrid table
+--- @field state "idle"|"run"|"hurt"|"attack"
+--- @field side 1|-1
+local sprite = {}
+sprite.__index = sprite
+sprite.id = "sprite"
+sprite.dependencies = { Tree.behaviors.map }
+sprite.LEFT = -1
+sprite.RIGHT = 1
+--- Скорость между кадрами в анимации
+sprite.ANIMATION_SPEED = 0.1
+
+function sprite.new(spriteDir)
+    local anim = setmetatable({}, sprite)
+    anim.animationTable = {}
+    anim.animationGrid = {}
+
+    -- n: name; i: image
+    for n, i in pairs(spriteDir) do
+        local aGrid = anim8.newGrid(96, 64, i:getWidth(), i:getHeight())
+        local tiles = '1-' .. math.ceil(i:getWidth() / 96)
+        anim.animationGrid[n] = aGrid(tiles, 1)
+    end
+
+    anim.state = "idle"
+    anim.side = sprite.RIGHT
+    anim:play("idle")
+    return anim
+end
+
+function sprite:update(dt)
+    local anim = self.animationTable[self.state] or self.animationTable["idle"] or nil
+
+    if not anim then return end
+    anim:update(dt)
+end
+
+function sprite:draw()
+    if not self.animationTable[self.state] or not Tree.assets.files.sprites.character[self.state] then return end
+
+    self.owner:try(Tree.behaviors.map,
+        function(map)
+            local ppm = Tree.level.camera.pixelsPerMeter
+            local position = map.displayedPosition
+            if Tree.level.selector.id == self.owner.id then love.graphics.setColor(0.5, 1, 0.5) end
+            self.animationTable[self.state]:draw(Tree.assets.files.sprites.character[self.state],
+                position.x + 0.5,
+                position.y + 0.5, nil, 1 / ppm * self.side, 1 / ppm, 38, 47)
+            love.graphics.setColor(1, 1, 1)
+        end
+    )
+end
+
+--- @param state string
+--- @param loop boolean | nil
+function sprite:play(state, loop)
+    if not self.animationGrid[state] then
+        return print("[SpriteBehavior]: no animation for '" .. state .. "'")
+    end
+    self.animationTable[state] = anim8.newAnimation(self.animationGrid[state], self.ANIMATION_SPEED, function()
+        if not loop then self:play("idle", true) end
+    end)
+    self.state = state
+end
+
+return sprite

lib/character/character.lua

@@ -5,14 +5,10 @@ require 'lib.utils.vec3'
 --- @type Id
 local characterId = 1
 
---- @todo Композиция лучше наследования, но не до такой же степени! Надо отрефакторить и избавиться от сотни полей в таблице
 --- @class Character
 --- @field id Id
---- @field info Info
---- @field graphics Graphics
---- @field logic Logic
---- @field spellbook Spell[] собственный набор спеллов персонажа
---- @field cast Spell | nil ссылка на активный спелл из спеллбука
+--- @field behaviors Behavior[]
+--- @field _behaviorsIdx {string: integer}
 local character = {}
 character.__index = character
 
@@ -26,50 +22,86 @@ character.__index = character
 local function spawn(name, template, spriteDir, position, size, level)
     local char = {}
 
+    char = setmetatable(char, character)
     char.id = characterId
     characterId = characterId + 1
-    char = setmetatable(char, character)
+    char.behaviors = {}
+    char._behaviorsIdx = {}
+
+    char:addBehavior {
+        Tree.behaviors.map.new(position, size),
+        Tree.behaviors.sprite.new(spriteDir),
+        Tree.behaviors.spellcaster.new()
+    }
 
-    char:addModules(
-        {
-            logic = (require 'lib.character.logic').new(char.id, position, size),
-            graphics = (require 'lib.character.graphics').new(char.id, spriteDir),
-            info = (require "lib/character/info").new(name, template, level)
-        }
-    )
     Tree.level.characters[char.id] = char
     return char
 end
 
+--- Проверяет, есть ли у персонажа поведение [behavior].
+--- @generic T : Behavior
+--- @param behavior T
+--- @return T | nil
+function character:has(behavior)
+    --- @cast behavior Behavior
+    local idx = self._behaviorsIdx[behavior.id]
+    if not idx then return nil end
+    return self.behaviors[idx] or nil
+end
+
+--- Если у персонажа есть поведение [behavior], применяет к нему [fn]
+---
+--- Дальше meme для интеллектуалов
+---
+--- *Я: мам купи мне >>=*
+---
+--- *Мама: у нас дома есть >>=*
+---
+--- *Дома:*
+--- @generic T : Behavior
+--- @generic V
+--- @param behavior T
+--- @param fn fun(behavior: T) : V | nil
+--- @return V | nil
+function character:try(behavior, fn)
+    local b = self:has(behavior)
+    if not b then return end
+    return fn(b)
+end
+
 --- usage:
---- addModules( {logic = logic.new(), graphics = graphics.new(), ...} )
-function character:addModules(modules)
-    for key, module in pairs(modules) do
-        module.owner = self
-        self[key] = module
+--- addBehavior( {logic.new(), graphics.new(), ...} )
+---
+--- or you may chain this if you are a wannabe haskell kiddo
+--- @param behaviors Behavior[]
+--- @return Character | nil
+function character:addBehavior(behaviors)
+    for _, b in ipairs(behaviors) do
+        if b.dependencies then
+            for _, dep in ipairs(b.dependencies) do
+                if not self:has(dep) then
+                    return print("[Character]: cannot add \"" .. b.id ..
+                        "\" for a character (Id = " .. self.id .. "): needs \"" .. dep.id .. "\"!")
+                end
+            end
+        end
+        b.owner = self
+        table.insert(self.behaviors, b)
+        self._behaviorsIdx[b.id] = #self.behaviors
     end
-end
-
---- геттеры и сеттеры для "внешних" данных
---- @return CharacterState
-function character:getState()
-    return self.logic.state or "idle"
-end
-
---- @param path Deque
-function character:followPath(path)
-    self.logic:followPath(path)
+    return self
 end
 
 function character:update(dt)
-    self.logic:update(dt)
-    if self.cast then self.cast:update(self, dt) end
-    self.graphics:update(dt)
+    for _, b in ipairs(self.behaviors) do
+        if b.update then b:update(dt) end
+    end
 end
 
 function character:draw()
-    self.graphics:draw()
-    if self.cast then self.cast:draw() end
+    for _, b in ipairs(self.behaviors) do
+        if b.draw then b:draw() end
+    end
 end
 
 return { spawn = spawn }

lib/character/graphics.lua

@@ -1,33 +0,0 @@
---- @class Graphics
---- @field owner Character
---- @field animation Animation
-local graphics = {}
-graphics.__index = graphics
-
---- @param id Id
---- @param spriteDir table
-local function new(id, spriteDir)
-    return setmetatable({
-        id = id,
-        animation = (require 'lib.character.animation').new(id, spriteDir)
-    }, graphics)
-end
-
-function graphics:update(dt)
-    self.animation.animationTable[self.owner:getState()]:update(dt)
-end
-
-function graphics:draw()
-    local ppm = Tree.level.camera.pixelsPerMeter
-    local position = self.owner.logic.mapLogic.displayedPosition
-    local state = self.owner:getState()
-
-    if Tree.level.selector.id == self.owner.id then love.graphics.setColor(0.5, 1, 0.5) end
-
-    self.animation.animationTable[state]:draw(Tree.assets.files.sprites.character[state],
-        position.x + 0.5,
-        position.y + 0.5, nil, 1 / ppm * self.animation.side, 1 / ppm, 38, 47)
-    love.graphics.setColor(1, 1, 1)
-end
-
-return { new = new }

lib/character/logic.lua

@@ -1,74 +0,0 @@
-local utils = require "lib.utils.utils"
-
---- @alias CharacterState "idle"|"run"|"attack"|"hurt"
-
---- @class Logic
---- @field owner Character
---- @field mapLogic MapLogic
---- @field state CharacterState
-local logic = {}
-logic.__index = logic
-
---- @param id Id
---- @param position? Vec3
---- @param size? Vec3
-local function new(id, position, size)
-    return setmetatable({
-        id = id,
-        mapLogic = (require 'lib.character.map_logic').new(id, position, size),
-        state = "idle"
-    }, logic)
-end
-
---- @param state CharacterState
-function logic:setState(state)
-    self.state = state
-    self.owner.graphics.animation:setState(state, (state ~= "idle" and state ~= "run") and function()
-        self:setState("idle")
-    end or nil)
-end
-
---- @param path Deque
-function logic:followPath(path)
-    if path:is_empty() then return end
-    self:setState("run")
-    self.mapLogic.path = path;
-    ---@type Vec3
-    local nextCell = path:peek_front()
-    self:runTo(nextCell)
-    path:pop_front()
-end
-
---- @param target Vec3
-function logic:runTo(target)
-    self.mapLogic.t0 = love.timer.getTime()
-    self.mapLogic.runTarget = target
-    local charPos = self.mapLogic.position
-    if target.x < charPos.x then
-        self.owner.graphics.animation.side = LEFT
-    elseif target.x > charPos.x then
-        self.owner.graphics.animation.side = RIGHT
-    end
-end
-
-function logic:update(dt)
-    if self.state == "run" and self.mapLogic.runTarget then
-        local delta = love.timer.getTime() - self.mapLogic.t0 or love.timer.getTime()
-        local fraction = delta /
-            (0.5 * self.mapLogic.runTarget:subtract(self.mapLogic.position):length()) -- бежим одну клетку за 500 мс, по диагонали больше
-        if fraction >= 1 then                                                         -- анимация перемещена завершена
-            self.mapLogic.position = self.mapLogic.runTarget
-            if not self.mapLogic.path:is_empty() then                                 -- еще есть, куда бежать
-                self:runTo(self.mapLogic.path:peek_front())
-                self.mapLogic.path:pop_front()
-            else -- мы добежали до финальной цели
-                self:setState("idle")
-                self.mapLogic.runTarget = nil
-            end
-        else                                                                                                        -- анимация перемещения не завершена
-            self.mapLogic.displayedPosition = utils.lerp(self.mapLogic.position, self.mapLogic.runTarget, fraction) -- линейный интерполятор
-        end
-    end
-end
-
-return { new = new }

lib/character/map_logic.lua

@@ -1,24 +0,0 @@
---- @class MapLogic
---- @field id Id
---- @field position Vec3
---- @field runTarget Vec3 точка, в которую в данный момент бежит персонаж
---- @field displayedPosition Vec3 точка, в которой персонаж отображается
---- @field t0 number время начала движения для анимациии
---- @field path Deque путь, по которому сейчас бежит персонаж
---- @field size Vec3
-local mapLogic = {}
-
---- @param id Id
---- @param position? Vec3
---- @param size? Vec3
-local function new(id, position, size)
-    return setmetatable({
-        id = id,
-        position = position or Vec3({}),
-        displayedPosition = position or Vec3({}),
-        size = size or Vec3({ 1, 1 }),
-        path = (require "lib.utils.deque").new()
-    }, mapLogic)
-end
-
-return { new = new }

lib/level/grid/character_grid.lua

@@ -12,9 +12,12 @@ function grid:add(id)
     local character = Tree.level.characters[id]
     if not character then return end
 
-    local centerX, centerY = math.floor(character.logic.mapLogic.position.x + 0.5),
-        math.floor(character.logic.mapLogic.position.y + 0.5)
-    local sizeX, sizeY     = character.logic.mapLogic.size.x, character.logic.mapLogic.size.y
+    local mapB = character:has(Tree.behaviors.map)
+    if not mapB then return end
+
+    local centerX, centerY = math.floor(mapB.displayedPosition.x + 0.5),
+        math.floor(mapB.displayedPosition.y + 0.5)
+    local sizeX, sizeY     = mapB.size.x, mapB.size.y
 
     for y = centerY, centerY + sizeY - 1 do
         for x = centerX, centerX + sizeX - 1 do
@@ -26,7 +29,10 @@ end
 --- @param a Character
 --- @param b Character
 local function drawCmp(a, b)
-    return a.logic.mapLogic.displayedPosition.y < b.logic.mapLogic.displayedPosition.y
+    -- здесь персонажи гарантированно имеют нужное поведение
+    return a:has(Tree.behaviors.map).displayedPosition.y
+        <
+        b:has(Tree.behaviors.map).displayedPosition.y
 end
 
 --- fills the grid with the actual data

lib/level/level.lua

@@ -39,7 +39,7 @@ end
 
 function level:draw()
     self.tileGrid:draw()
-    while not self.characterGrid.yOrderQueue:is_empty() do -- по сути это сортировка кучей за n log n, но линейное 
+    while not self.characterGrid.yOrderQueue:is_empty() do -- по сути это сортировка кучей за n log n
         self.characterGrid.yOrderQueue:pop():draw()
     end
 end

lib/level/selector.lua

@@ -25,10 +25,11 @@ function selector:update(dt)
 
     if not characterId and self.id then -- Когда кликаем по тайлу за персонажа в режиме каста, кастуем спелл
         local char = Tree.level.characters[self.id]
-        if char.cast then
-            char.cast:cast(char, mousePosition)
-            char.cast = nil
-        end
+        char:try(Tree.behaviors.spellcaster, function(b)
+            if not b.cast then return end
+            b.cast:cast(char, mousePosition)
+            b.cast = nil
+        end)
     end
     self:select(characterId)
 

lib/spellbook.lua

@@ -17,16 +17,15 @@ local walk = setmetatable({
 }, spell)
 
 function walk:cast(caster, target)
-    caster.cast = nil
     local path = self.path
     path:pop_front()
     print("Following path: ")
     for p in path:values() do print(p) end
-    caster:followPath(path)
+    caster:has(Tree.behaviors.map):followPath(path)
 end
 
 function walk:update(caster, dt)
-    local charPos = caster.logic.mapLogic.position:floor()
+    local charPos = caster:has(Tree.behaviors.map).position:floor()
     --- @type Vec3
     local mpos = Tree.level.camera:toWorldPosition(Vec3 { love.mouse.getX(), love.mouse.getY() }):floor()
     self.path = require "lib.pathfinder" (charPos, mpos)

lib/tree.lua

@@ -3,9 +3,14 @@
 --- В love.update обновлять, в love.draw читать
 
 
-Tree = {
+Tree                       = {
     assets = (require "lib.utils.asset_bundle"):load()
 }
-Tree.panning = require "lib/panning"
-Tree.controls = require "lib.controls"
-Tree.level = (require "lib.level.level").new("procedural", "flower_plains") -- для теста у нас только один уровень, который сразу же загружен
+Tree.panning               = require "lib/panning"
+Tree.controls              = require "lib.controls"
+Tree.level                 = (require "lib.level.level").new("procedural", "flower_plains") -- для теста у нас только один уровень, который сразу же загружен
+
+Tree.behaviors             = {}                                                             --- @todo написать нормальную загрузку поведений
+Tree.behaviors.map         = require "lib.character.behaviors.map"
+Tree.behaviors.spellcaster = require "lib.character.behaviors.spellcaster"
+Tree.behaviors.sprite      = require "lib.character.behaviors.sprite"

lib/ui/layout.lua

@@ -11,9 +11,11 @@ local SkillButton = ui.Rectangle {
 }
 function SkillButton:update(dt)
     ui.Rectangle.update(self, dt)
-    self.color = self.owner.cast and { 0, 1, 0 } or { 1, 0, 0 }
-    self:onTap(function()
-        self.owner.cast = self.owner.cast and nil or self.owner.spellbook[self.spellId]
+    self.owner:try(Tree.behaviors.spellcaster, function(spellcaster)
+        self.color = spellcaster.cast and { 0, 1, 0 } or { 1, 0, 0 }
+        self:onTap(function()
+            spellcaster.cast = spellcaster.cast and nil or spellcaster.spellbook[self.spellId]
+        end)
     end)
 end
 

main.lua

@@ -3,25 +3,15 @@
 local character = require "lib/character/character"
 require "lib/tree"
 local layout = require "lib.ui.layout"
-local spellbook = require "lib.spellbook"
+
 
 function love.conf(t)
     t.console = true
 end
 
 function love.load()
-    for x = 0, 29, 1 do
-        for y = 0, 29, 1 do
-            if math.random() > 0.8 then
-                local c = character.spawn("Hero", "warrior", Tree.assets.files.sprites.character)
-                c.logic.mapLogic.position = Vec3 { x, y }
-                c.logic.mapLogic.displayedPosition = Vec3 { x, y }
-                c.spellbook = spellbook.of { spellbook.walk }
-                c.logic:setState("attack")
-            end
-        end
-    end
-
+    character.spawn("Hero", "warrior", Tree.assets.files.sprites.character)
+    character.spawn("Hero", "warrior", Tree.assets.files.sprites.character, Vec3 { 3, 3 })
     love.window.setMode(1080, 720, { resizable = true, msaa = 4, vsync = true })
 end