implemented character movement & initial selector

Co-authored-by: Ivan Yuriev <ivanyr44@gmail.com>

lib/character.lua

@@ -6,6 +6,7 @@ local ANIMATION_SPEED = 0.1
 
 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 integer
 --- @field name string
@@ -16,6 +17,8 @@ local characterId = 1
 --- @field skills table
 --- @field class "warrior"|"mage"
 --- @field position Vec3
+--- @field latestPosition Vec3 позиция, где character был один тик назад
+--- @field runTarget Vec3 точка, в которую в данный момент бежит персонаж
 --- @field size Vec3
 local character = {}
 character.__index = character
@@ -66,10 +69,34 @@ local function spawn(name, spriteDir, level)
 
     char = setmetatable(char, character)
     Tree.level.characters[char.id] = char
+    Tree.level.positionGrid:add(char)
     return char
 end
 
+--- @param target Vec3
+function character:runTo(target)
+    self.state = "run"
+    self.runTarget = target
+end
+
 function character:update(dt)
+    if self.state == "run" and self.runTarget then
+        if self.position:floor() == self.runTarget:floor() then -- мы добежали до цели и сейчас в целевой клетке
+            self.state = "idle"
+            self.runTarget = nil
+        else                -- мы не добежали до цели
+            local vel = (self.runTarget:subtract(self.position):normalize() --[[@as Vec3]]
+            ):scale(2 * dt) -- бежим 2 условных метра в секунду
+            self.position = self.position:add(vel)
+        end
+    end
+
+    if self.position ~= self.latestPosition then
+        -- типа уведомление о том, что положение (на уровне клеток) изменилось
+        Tree.level.positionGrid:remove(self)
+        Tree.level.positionGrid:add(self)
+    end
+
     if love.keyboard.isDown("r") then
         self.state = "run"
     end

lib/controls.lua

@@ -14,6 +14,7 @@ local keymap = {
     cameraMoveRight = control("key", "d"),
     cameraMoveDown = control("key", "s"),
     cameraMoveScroll = control("mouse", "3"),
+    select = control("mouse", "1")
 }
 
 function keymap:isDown(key)

lib/grid.lua

@@ -7,12 +7,12 @@ grid.__index = grid
 --- Adds a character id to the grid
 --- @param character Character
 function grid:add(character)
-    local centerX, centerY = character.position.x, character.position.y
+    local centerX, centerY = math.floor(character.position.x), math.floor(character.position.y)
     local sizeX, sizeY     = character.size.x, character.size.y
 
     for y = centerY, centerY + sizeY - 1 do
         for x = centerX, centerX + sizeX - 1 do
-            grid[x][y] = character.id
+            self[x][y] = character.id
         end
     end
 end
@@ -20,12 +20,12 @@ end
 --- Removes a character id from the grid
 --- @param character Character
 function grid:remove(character)
-    local centerX, centerY = character.position.x, character.position.y
+    local centerX, centerY = math.floor(character.position.x), math.floor(character.position.y)
     local sizeX, sizeY     = character.size.x, character.size.y
 
     for y = centerY, centerY + sizeY - 1 do
         for x = centerX, centerX + sizeX - 1 do
-            grid[x][y] = nil
+            self[x][y] = nil
         end
     end
 end
@@ -37,7 +37,7 @@ end
 local function generateGrid(width, height)
     local g = utils.generateList(width, function(_)
         return utils.generateList(height, function(_)
-            return nil
+            return {}
         end)
     end)
 

lib/level.lua

@@ -3,7 +3,7 @@ local utils = require "lib/utils"
 --- @class Level
 --- @field characters Character[]
 --- @field positionGrid Grid
---- @field selected table
+--- @field selector Selector
 --- @field camera Camera
 local level = {}
 level.__index = level
@@ -12,6 +12,7 @@ local function new()
     return setmetatable({
         characters = {},
         positionGrid = (require "lib/grid").new(30, 30), -- magic numbers for testing purposes only
+        selector = (require "lib/selector").new(),
         camera = (require "lib/camera").new()
     }, level)
 end

lib/selector.lua

@@ -0,0 +1,35 @@
+--- @class Selector
+--- @field id integer
+local selector = {}
+
+local function new()
+    return setmetatable({}, selector)
+end
+
+--- @param characterId integer
+function selector:select(characterId)
+    self.id = characterId
+end
+
+function selector:deselect()
+    self.id = nil
+end
+
+--- TODO: сделать обработчик селектора
+--- @param camera Camera
+function selector:update(camera, dt)
+    if self.id then
+        return
+    end
+    local mousePosition = camera:toWorldPosition(Vec3 { love.mouse.getX(), love.mouse.getY() }):floor()
+    local characterPosition = Tree.level.positionGrid[mousePosition.x][mousePosition.y]
+    if Tree.controls:isDown("select") then
+        if characterPosition then
+            self:select(characterPosition)
+        end
+    end
+end
+
+return {
+    new = new
+}

lib/vec3.lua

@@ -1,4 +1,4 @@
---- @class (exact) Vec3
+--- @class Vec3
 --- @field x number
 --- @field y number
 --- @field z number
@@ -12,6 +12,8 @@ local function __tostring(self)
     return "Vec3{" .. self.x .. ", " .. self.y .. ", " .. self.z .. "}"
 end
 
+
+
 --- @param other Vec3
 --- @return Vec3
 function __Vec3:add(other)
@@ -51,31 +53,43 @@ function __Vec3:angle_to(other)
     return (other - self):direction()
 end
 
+function __Vec3:floor()
+    return Vec3 { math.floor(self.x), math.floor(self.y), math.floor(self.z) }
+end
+
+function __Vec3:invert()
+    return self:scale(-1)
+end
+
+--- @param other Vec3
+function __Vec3:subtract(other)
+    return self:add(other:invert())
+end
+
+--- @param other Vec3
+function __Vec3:equalsTo(other)
+    return
+        self.x == other.x
+        and self.y == other.y
+        and self.z == other.z
+end
+
 ---Vec3 constructor
 ---@param vec number[]
----@return Vec3
 function Vec3(vec)
     return setmetatable({
         x = vec[1] or 0,
         y = vec[2] or 0,
         z = vec[3] or 0,
+
     }, {
         __index = __Vec3,
         __tostring = __tostring,
         __add = __Vec3.add,
         __mul = __Vec3.scale,
-        __unm = function(self)
+        __unm = __Vec3.invert,
-            return __Vec3.scale(self, -1)
+        __sub = __Vec3.subtract,
-        end,
+        __eq = __Vec3.equalsTo
-        __sub = function(self, other)
-            return self + -other
-        end,
-        __eq = function(self, other)
-            return
-                self.x == other.x
-                and self.y == other.y
-                and self.z == other.z
-        end,
     })
 end
 

main.lua

@@ -8,9 +8,8 @@ function love.conf(t)
 end
 
 function love.load()
-    character.spawn("Hero", Tree.assets.files.sprites.character)
+    local char = character.spawn("Hero", Tree.assets.files.sprites.character)
-    local hero2 = character.spawn("Hero2", Tree.assets.files.sprites.character)
+    char:runTo(Vec3 { 5, 5 })
-    hero2.position = Vec3 { 1, 1 }; -- вообще-то мы вообще не хотим как-то взаимодействовать с персонажем за пределами update, но это удобно для тестов
 
     -- PlayerFaction.characters = { Hero1, Hero2 }
     love.window.setMode(1080, 720, { resizable = true, msaa = 4, vsync = true })