Basic multi node type
This commit is contained in:
adrien
@@ -1,34 +0,0 @@
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-- scripts/box.lua
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-- Autonomous bouncing box.
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-- Edit vx, vy, or the color below, save the file, and watch it update live!
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local vx, vy = 2050, 110 -- ← try cranking these up
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local size = 60
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local r, g, b = 255, 180, 50 -- ← golden amber box
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function on_init()
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log("Box ready – bouncing at vx=" .. vx .. " vy=" .. vy)
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end
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function on_update(dt)
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self_x = self_x + vx * dt
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self_y = self_y + vy * dt
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-- Bounce off the four walls (respecting the editor panel)
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if self_x < 0 or self_x + size > 1055 then
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vx = -vx
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self_x = math.max(0, math.min(1055 - size, self_x))
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end
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if self_y < 0 or self_y + size > 720 then
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vy = -vy
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self_y = math.max(0, math.min(720 - size, self_y))
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end
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end
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function on_render()
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draw_rect(self_x, self_y, size, size, r, g, b)
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-- Velocity debug overlay
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local speed_label = "v=" .. math.floor(math.sqrt(vx * vx + vy * vy))
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draw_text(speed_label, self_x + 4, self_y + size / 2 - 6, 12, 0, 0, 0)
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end
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@@ -0,0 +1,46 @@
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-- scripts/enemy_rect.lua
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-- RectNode: bounces around, changes color on bounce.
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-- Try editing vx/vy or the color while the engine is running!
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local vx, vy = 180, 130
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---@param self RectNode
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function on_init(self)
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self.x = 600
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self.y = 300
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-- self.color already set by engine (passed in addRectNode),
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-- but we can override it here.
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self.color = { r = 220, g = 60, b = 60, a = 255 }
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end
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---@param self RectNode
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---@param dt number
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function on_update(self, dt)
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self.x = self.x + vx * dt
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self.y = self.y + vy * dt
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if self.x < 0 or self.x + self.width > 1030 then
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vx = -vx
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self.x = math.max(0, math.min(1030 - self.width, self.x))
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-- Flash yellow on bounce
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self.color = { r = 240, g = 220, b = 50, a = 255 }
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end
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if self.y < 0 or self.y + self.height > 720 then
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vy = -vy
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self.y = math.max(0, math.min(720 - self.height, self.y))
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self.color = { r = 240, g = 220, b = 50, a = 255 }
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end
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-- Fade back to red
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self.color.r = math.min(220, self.color.r + 180 * dt)
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self.color.g = math.max(60, self.color.g - 300 * dt)
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self.color.b = math.max(60, self.color.b - 200 * dt)
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end
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---@param self RectNode
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function on_render(self)
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-- Label over auto-drawn rect
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draw_text("Enemy", self.x + 4, self.y + 18, 13, 255, 210, 210)
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local spd = math.floor(math.sqrt(vx * vx + vy * vy))
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draw_text("v=" .. spd, self.x + 4, self.y + 34, 10, 200, 200, 200)
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end
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@@ -0,0 +1,114 @@
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---@meta engine
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---
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--- LSP type stubs for the Zig engine API.
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--- This file is NEVER executed — it only exists so lua-language-server
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--- can provide autocomplete, type checking, and inline docs.
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---
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--- Usage in your scripts:
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--- ---@param self RectNode (or NodeBase for base nodes)
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-- ─── Color type ──────────────────────────────────────────────────────────────
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---@class Color
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---@field r number Red 0-255
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---@field g number Green 0-255
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---@field b number Blue 0-255
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---@field a number Alpha 0-255
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-- ─── Node self types ─────────────────────────────────────────────────────────
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---@class NodeBase
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---@field x number World X position (read/write)
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---@field y number World Y position (read/write)
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--- Extends NodeBase with rectangle geometry.
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--- The engine draws the rect each frame; modify fields to change it.
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---@class RectNode : NodeBase
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---@field width number Rectangle width
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---@field height number Rectangle height
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---@field color Color Fill color (r/g/b/a subtable)
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-- ─── Drawing ─────────────────────────────────────────────────────────────────
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---@param x number
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---@param y number
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---@param w number
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---@param h number
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---@param r number Red 0-255
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---@param g number Green 0-255
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---@param b number Blue 0-255
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---@param a? number Alpha 0-255 (default 255)
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function draw_rect(x, y, w, h, r, g, b, a) end
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---@param x number
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---@param y number
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---@param radius number
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---@param r number
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---@param g number
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---@param b number
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---@param a? number
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function draw_circle(x, y, radius, r, g, b, a) end
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---@param text string
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---@param x number
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---@param y number
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---@param size number Font size in pixels
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---@param r number
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---@param g number
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---@param b number
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---@param a? number
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function draw_text(text, x, y, size, r, g, b, a) end
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---@param x1 number
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---@param y1 number
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---@param x2 number
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---@param y2 number
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---@param r number
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---@param g number
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---@param b number
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---@param a? number
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function draw_line(x1, y1, x2, y2, r, g, b, a) end
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-- ─── Input ───────────────────────────────────────────────────────────────────
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--- Returns true while key is held.
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---@param key integer Use Key.X constants
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---@return boolean
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function key_down(key) end
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--- Returns true only on the first frame the key is pressed.
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---@param key integer
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---@return boolean
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function key_pressed(key) end
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--- Returns true while mouse button is held. 0=left 1=right 2=middle
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---@param button integer
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---@return boolean
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function mouse_down(button) end
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---@return number
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function mouse_x() end
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---@return number
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function mouse_y() end
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-- ─── Key constants ───────────────────────────────────────────────────────────
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---@class KeyTable
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---@field LEFT integer
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---@field RIGHT integer
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---@field UP integer
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---@field DOWN integer
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---@field SPACE integer
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---@field W integer
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---@field A integer
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---@field S integer
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---@field D integer
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---@type KeyTable
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Key = {}
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-- ─── Utility ─────────────────────────────────────────────────────────────────
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---@param message string
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function log(message) end
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@@ -0,0 +1,39 @@
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-- scripts/healthbar.lua
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-- RectNode: the engine draws the green bar automatically.
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-- This script drives the HP logic and recolors/resizes the bar.
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local max_hp = 100
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local hp = 100
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---@param self RectNode
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function on_init(self)
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self.x = 20
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self.y = 20
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self.width = 200
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self.height = 20
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self.color = { r = 60, g = 200, b = 80, a = 255 }
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log("HealthBar ready")
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end
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---@param self RectNode
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---@param dt number
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function on_update(self, dt)
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-- Slow drain (replace with real damage events)
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hp = math.max(0, hp - 4 * dt)
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-- Shrink bar proportionally
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self.width = (hp / max_hp) * 200
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-- Green → red as HP drops
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local t = hp / max_hp
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self.color.r = math.floor((1 - t) * 220)
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self.color.g = math.floor(t * 200)
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self.color.b = 40
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end
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---@param self RectNode
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function on_render(self)
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-- Label drawn on top of the auto-rendered bar
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local label = "HP: " .. (math.floor(hp)) .. (" / ") .. max_hp
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draw_text(label, self.x + 4, self.y + 4, 12, 240, 240, 240)
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end
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+24
-33
@@ -1,42 +1,33 @@
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-- scripts/player.lua
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-- Globals provided each frame by the engine:
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-- self_x, self_y ← read AND write to move the node
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-- API: draw_rect draw_circle draw_text draw_line
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-- key_down key_pressed mouse_down mouse_x mouse_y
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-- log(msg)
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-- Base node: the script handles all drawing.
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local speed = 200
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local width = 40
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local height = 50
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local cr, cg, cb = 80, 160, 255 -- ← try changing this color and saving!
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local speed = 200
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local w, h = 40, 50
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function on_init()
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log("Player init at " .. self_x .. ", " .. self_y)
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-- self_x/self_y already hold the last known position,
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-- so hot-reload doesn't teleport the player back to origin.
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---@param self NodeBase
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function on_init(self)
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log("Player spawned at " .. (self.x) .. ", " .. (self.y))
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end
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function on_update(dt)
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if key_down(Key.RIGHT) or key_down(Key.D) then self_x = self_x + speed * dt end
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if key_down(Key.LEFT) or key_down(Key.A) then self_x = self_x - speed * dt end
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if key_down(Key.DOWN) or key_down(Key.S) then self_y = self_y + speed * dt end
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if key_down(Key.UP) or key_down(Key.W) then self_y = self_y - speed * dt end
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---@param self NodeBase
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---@param dt number
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function on_update(self, dt)
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if key_down(Key.RIGHT) or key_down(Key.D) then self.x = self.x + speed * dt end
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if key_down(Key.LEFT) or key_down(Key.A) then self.x = self.x - speed * dt end
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if key_down(Key.DOWN) or key_down(Key.S) then self.y = self.y + speed * dt end
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if key_down(Key.UP) or key_down(Key.W) then self.y = self.y - speed * dt end
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-- Clamp to game area (leave the editor panel free)
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self_x = math.max(0, math.min(1055, self_x))
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self_y = math.max(0, math.min(665, self_y))
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self.x = math.max(0, math.min(1030, self.x))
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self.y = math.max(0, math.min(665, self.y))
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end
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function on_render()
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-- Body
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draw_rect(self_x, self_y, width, height, cr, cg, cb)
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-- Eyes (white + pupil)
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draw_circle(self_x + 11, self_y + 14, 6, 255, 255, 255)
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draw_circle(self_x + 29, self_y + 14, 6, 255, 255, 255)
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draw_circle(self_x + 13, self_y + 14, 3, 0, 0, 0)
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draw_circle(self_x + 31, self_y + 14, 3, 0, 0, 0)
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-- Label
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draw_text("Player", self_x, self_y - 16, 11, 180, 220, 255)
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---@param self NodeBase
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function on_render(self)
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draw_rect(self.x, self.y, w, h, 80, 160, 255)
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-- eyes
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draw_circle(self.x + 11, self.y + 14, 6, 255, 255, 255)
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draw_circle(self.x + 29, self.y + 14, 6, 255, 255, 255)
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draw_circle(self.x + 13, self.y + 14, 3, 0, 0, 0)
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draw_circle(self.x + 31, self.y + 14, 3, 0, 0, 0)
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draw_text("Player", self.x, self.y - 16, 11, 180, 220, 255)
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end
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