Realtime mesh demo in StarfallEx

gwars.lua

--@client
--@include libs/fh_lube.lua
require("libs/fh_lube.lua")(function()
    local math_cos = math.cos
    local math_sin = math.sin
    local mesh_advanceVertex = mesh.advanceVertex
    local mesh_generate = mesh.generate
    local mesh_writeColor = mesh.writeColor
    local mesh_writePosition = mesh.writePosition
    local mesh_writeUV = mesh.writeUV
    local render_drawPoly = render.drawPoly
    local render_popMatrix = render.popMatrix
    local render_pushMatrix = render.pushMatrix
    local render_setBackgroundColor = render.setBackgroundColor
    local render_setMaterial = render.setMaterial
    local render_selectRenderTarget = render.selectRenderTarget
    local render_setRenderTargetTexture = render.setRenderTargetTexture
    local render_setRGBA = render.setRGBA
    local timer_systime = timer.systime
    local Vector = Vector
    render.createRenderTarget("main")
    local wireframe = material.load("models/wireframe")
    local bg = Color(127, 127, 127)
    local zm = 20
    local zo = 50
    local ship = {
        {x=0, y=-0.5},
        {x=0.3, y=0.5},
        {x=0, y=0.3},
        {x=-0.3, y=0.5}
    }
    local shipMtx = Matrix()
    shipMtx:setScale(Vector(128, 128))
    local shipPos = Vector(512, 512)
    shipMtx:setTranslation(shipPos)
    local function generator()
        local now = timer_systime()
        for y=0, 9 do
            local y2 = y/10
            local y3 = y2+0.1
            local y4 = y2*512
            local y5 = y3*512
            for x=0, 9 do
                local x2 = x/10
                local x3 = x2+0.1
                local x4 = x2*512
                local x5 = x3*512
                local tr = Vector(x5, y4, (math_sin(x+1+now)+math_cos(y+now))*zm+zo)
                local bl = Vector(x4, y5, (math_sin(x+now)+math_cos(y+1+now))*zm+zo)
                mesh_writeColor(255, 255, 255, 255)
                mesh_writePosition(Vector(x4, y4, (math_sin(x+now)+math_cos(y+now))*zm+zo))
                mesh_writeUV(0, x2, y2)
                mesh_advanceVertex()
                mesh_writeColor(255, 255, 255, 255)
                mesh_writePosition(tr)
                mesh_writeUV(0, x3, y2)
                mesh_advanceVertex()
                mesh_writeColor(255, 255, 255, 255)
                mesh_writePosition(bl)
                mesh_writeUV(0, x2, y3)
                mesh_advanceVertex()
                mesh_writeColor(255, 255, 255, 255)
                mesh_writePosition(bl)
                mesh_writeUV(0, x2, y3)
                mesh_advanceVertex()
                mesh_writeColor(255, 255, 255, 255)
                mesh_writePosition(tr)
                mesh_writeUV(0, x3, y2)
                mesh_advanceVertex()
                mesh_writeColor(255, 255, 255, 255)
                mesh_writePosition(Vector(x5, y5, (math_sin(x+1+now)+math_cos(y+1+now))*zm+zo))
                mesh_writeUV(0, x3, y3)
                mesh_advanceVertex()
            end
        end
    end
    hook.add("render", "render", function()
        render_setBackgroundColor(bg)
        render_setRGBA(255, 255, 255, 255)
        render_selectRenderTarget("main")
            render_setMaterial(wireframe)
            render_pushMatrix(shipMtx)
                render_drawPoly(ship)
            render_popMatrix()
        render_selectRenderTarget()
        render_setRenderTargetTexture("main")
        mesh_generate(nil, 2, 200, generator)
    end)
end)