Draw

Functions
local function	clear (color)
	std.draw.clear
local function	rect (mode, pos_x, pos_y, width, height)
	std.draw.rect
local function	line (x1, y1, y2, y1, y2)
	std.draw.line
local function	image (src, pos_x, pos_y)
	std.draw.image
local function	poly (mode, pos_x, pos_y, scale, angle, origin_x, origin_y)
	std.draw.poly

Detailed Description

Warning

There is no support for ps1, gba and nds to draw images, as they use a specific bitmap and it is necessary to implement a sprite conversion tool.

Design Decision

There is no std.draw.pixel or std.draw.circle, nor plans to add them, due to frontend design decisions. The engine is designed to be multiplatform, ensuring code runs on all devices while respecting their processing and memory limits.

• std.draw.pixel
  there are no optimizations to be done in many cases it would just be a std.draw.rect(x, y, 1, 1), so leave this as a user task.

• std.draw.circle
  The ginga does not have the ability to draw circles on most televisions devices,
  and older video games like gba and nds are very expensive to resize them every frame.

Tool IMG Gen

It is possible to create logos or any images using the engine's real-time drawing API while writing the rendering code and clicking download.

• source: https://github.com/gamelly/tool-img-gen
• website: https://gamelly.github.io/tool-img-gen

Function Documentation

clear()

local function clear

(

color

)

image()

local function image	(	src	,
		pos_x	,
		pos_y	)

Deprecated

std.draw.image is moving to std.image.draw

line()

local function line	(	x1	,
		y1	,
		y2	,
		y1	,
		y2	)

poly()

local function poly	(	mode	,
		pos_x	,
		pos_y	,
		scale	,
		angle	,
		origin_x	,
		origin_y	)

Example

local spaceship = {-2,3, 0,-2, 2,3}
std.draw.poly(0, game.player_x, game.player_y, 1, player_angle)

rect()

local function rect	(	mode	,
		pos_x	,
		pos_y	,
		width	,
		height	)