Unit Testing
Entry posted by Josh ·
8,727 views
I've spent the last few days writing simple examples for every single command in Leadwerks 3. Not only does this make the documentation more friendly, it also acts as a final test to make sure all the commands work the way they say they should. I make the C++ example and then Chris converts it to Lua (and tells me what I did wrong!).
I didn't realize it at first, but this really showcases the strength of API design of Leadwerks. Since you get full control over the execution and flow of a Leadwerks program, it's easy to learn from simple examples that demonstrate one idea. Below are a few examples for different commands in the API.
Get the device accellerometer reading:
#include "App.h"
using namespace Leadwerks;
Window* window = NULL;
Context* context = NULL;
bool App::Start()
{
window = Window::Create();
context = Context::Create(window);
return true;
}
bool App::Continue()
{
if (window->Closed() || window->KeyDown(Key::Escape)) return false;
Draw::SetColor(0,0,0);
context->Clear();
//Display the device information on the screen
Draw::SetBlendMode(Blend::Alpha);
Draw::SetColor(1,1,1);
Draw::Text("Orientation: "+String(Device::GetOrientation()),2,2);
Draw::Text("Acceleration: "+Device::GetAcceleration().ToString(),2,22);
Draw::SetBlendMode(Blend::Solid);
context->Sync();
return true;
}
Create a physics shape from a model and use it on a scaled entity 
:
#include "App.h"
using namespace Leadwerks;
Window* window = NULL;
Context* context = NULL;
World* world = NULL;
Camera* camera = NULL;
bool App::Start()
{
window = Window::Create();
context = Context::Create(window);
world = World::Create();
camera = Camera::Create();
camera->SetRotation(35,0,0);
camera->Move(0,0,-10);
Light* light = DirectionalLight::Create();
light->SetRotation(35,35,0);
//Create the ground
Model* ground = Model::Box(10,1,10);
ground->SetPosition(0,-0.5,0);
ground->SetColor(0,1,0);
//Create a shape
Shape* shape = Shape::Box(0,0,0, 0,0,0, 10,1,10);
ground->SetShape(shape);
shape->Release();
//Load a model
Model* model = Model::Load("Models/teapot.mdl");
model->SetPosition(0,0,0);
model->SetColor(0,0,1);
model->SetScale(4,4,4);
//Create a shape
shape = Shape::PolyMesh(model->GetSurface(0));
model->SetShape(shape);
model->SetPosition(0,0,0);
shape->Release();
//Create some objects to fall
model = Model::Sphere();
shape = Shape::Sphere();
model->SetShape(shape);
shape->Release();
model->SetMass(1);
model->SetColor(Math::Rnd(0,1),Math::Rnd(0,1),Math::Rnd(0,1));
model->SetPosition(Math::Rnd(-1,1),Math::Rnd(3,6),Math::Rnd(-1,1));
for (int i=0; i<10; i++)
{
model = (Model*)model->Instance();
model->SetCollisionType(Collision::Prop);
model->SetColor(Math::Rnd(0,1),Math::Rnd(0,1),Math::Rnd(0,1));
model->SetPosition(Math::Rnd(-1,1),5+i*2,Math::Rnd(-1,1));
}
return true;
}
bool App::Continue()
{
if (window->Closed() || window->KeyDown(Key::Escape)) return false;
Time::Update();
world->Update();
world->Render();
context->Sync();
return true;
}
Or in Lua, if you prefer:
function App:Start()
self.window=Window:Create(self.title,0,0,1136+6,640+32,Window.Titlebar+Window.Center+8)
self.context=Context:Create(self.window,0)
self.world=World:Create()
camera = Camera:Create()
camera:SetRotation(35,0,0)
camera:Move(0,0,-10)
light = DirectionalLight:Create()
light:SetRotation(35,35,0)
--Create the ground
ground = Model:Box(10,1,10)
ground:SetPosition(0,-.05,0)
ground:SetColor(0,1,0)
--Create a shape
shape = Shape:Box(0,0,0, 0,0,0, 10,1,10)
ground:SetShape(shape)
shape:Release()
--Load a model
model = Model:Load("Models/teapot.mdl")
model:SetPosition(0,0,0)
model:SetColor(0,0,1)
model:SetScale(4,4,4)
--Create a shape
shape = Shape:PolyMesh((model:GetSurface(0)))
model:SetShape(shape)
model:SetPosition(0,0,0)
shape:Release()
--Create some objects to fall
model = Model:Sphere()
shape = Shape:Sphere()
model:SetShape(shape)
shape:Release()
model:SetMass(1)
model:SetColor(Math:Rnd(0,1),Math:Rnd(0,1))
model:SetPosition(Math:Rnd(-1,1),Math:Rnd(3,6),Math:Rnd(-1,1),true)
for i=0, 9 do
model = tolua.cast(model:Instance(),"Model")
model:SetCollisionType(Collision.Prop)
model:SetColor(Math:Rnd(0,1),Math:Rnd(0,1),Math:Rnd(0,1))
model:SetPosition(Math:Rnd(-1,1),5+i*2,Math:Rnd(-1,1),true)
end
return true
end
function App:Continue()
if self.window:Closed() or self.window:KeyHit(Key.Escape) then return false end
Time:Update()
self.world:Update()
self.world:Render()
self.context:Sync()
return true
end
Create a texture from scratch:
#include "App.h"
using namespace Leadwerks;
Window* window = NULL;
Context* context = NULL;
World* world = NULL;
Texture* texture = NULL;
bool App::Start()
{
window = Window::Create();
context = Context::Create(window);
//Create a texture
texture = Texture::Create(256,256);
//Set the texture pixel data
char* pixels = (char*)malloc(texture->GetMipmapSize(0));
char r,g,b;
for (int x=0; x<256; x++)
{
for (int y=0; y<256; y++)
{
int p = (x*texture->GetWidth() + y)*4;
memcpy(&r,pixels + p + 0, 1);
memcpy(&g,pixels + p + 1, 1);
memcpy(&b,pixels + p + 2, 1);
if (x<128)
{
if (y<128)
{
r=0; g=0; b=255;
}
else
{
r=255; g=0; b=0;
}
}
else
{
if (y<128)
{
r=255; g=0; b=0;
}
else
{
r=0; g=0; b=255;
}
}
memcpy(pixels + p + 0, &r, 1);
memcpy(pixels + p + 1, &g, 1);
memcpy(pixels + p + 2, &b, 1);
}
}
texture->SetPixels(pixels);
return true;
}
bool App::Continue()
{
if (window->Closed() || window->KeyDown(Key::Escape)) return false;
Draw::SetColor(0,0,0);
context->Clear();
//Display the texture on screen
Draw::SetColor(1,1,1);
Draw::Image(texture,0,0);
context->Sync();
return true;
}
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