First of all it was way to hot to do anything so I just stayed in bed till 10 and then spent the rest of the morning reading (The Sicons of Shannara - great book). When it had cooled down a bit I risked turing my computer on and just sat there blankley thinking about what I could do. So eventually I came to the decision of doing more to my engine and doing somthing that I have really wanted to do for a long time - Adding Scripting.
The first question, 'What scripting language should I use?'. Well to tell the truth it took all of 0.2 seconds to think about that and I decided upon 'Squirrel' over 'Lua' because 'Lua' makes me want to die every time I look at how disgusting it is. Anyway after a bit of looking (google) I found the download (sqplus) and started just trying to get it working. Well after much hair pulling I finally figured out how to do stuff with it and have now just been playing around with making the library functions visiable to a script - and it is sooo cool.
As things stand an example script looks like this:
local running = true;while (running == true){ running = UpdateSystem(); UpdateInput(); Cls(); DrawRect(MouseX(), MouseY(), 10, 10); Flip(); if (KeyDown(27) == true) running = false;}Which is exctally the same as for the hardcoded c++ version, cept you dont have to declare types(bool for 'running').
Basically the above code draws a white box at the mouse position.
The C++ Complimenting code is below (it is just test code - im probaly going to create a full sq version of the engine):
/* Fallen Smash Bash ----------------------------- A game written using the Fallen Engine Basic clone of breakout*//* Fallen Engine - Test Project Written by Stefan J Lulham*/// System includes#include #include #include #include #include #include #include #include #pragma comment (lib ,"squirrel.lib")#pragma comment (lib ,"sqdbglib.lib")#pragma comment (lib ,"sqstdlib.lib")#pragma comment (lib ,"sqplus.lib")// Library includes#include "../Fallen Engine/system.h"#include "../Fallen Engine/graphics.h"#include "../Fallen Engine/input.h"#include "../Fallen Engine/resource_manager.h"// Game includes#include "game.h"// Usee some library'susing namespace Fallen::System;using namespace Fallen::Graphics;using namespace Fallen::Input;using namespace Fallen::ResourceManager;using namespace std;using namespace SqPlus;Key ToFallenKey(SQInteger k){ switch(k) { case 27: return KEY_ESCAPE; }}SQInteger s_DrawRect(HSQUIRRELVM v){ SQFloat x, y, w, h; sq_getfloat(v, 2, &x); sq_getfloat(v, 3, &y); sq_getfloat(v, 4, &w); sq_getfloat(v, 5, &h); CGraphics::DrawRect(x, y, w, h); return 0;}SQInteger s_SetDrawColor(HSQUIRRELVM v){ SQFloat r, g, b; sq_getfloat(v, 2, &r); sq_getfloat(v, 3, &g); sq_getfloat(v, 4, &b); CGraphics::SetDrawColor(r, g, b); return 0;}SQInteger s_MouseX(HSQUIRRELVM v){ sq_pushfloat(v, SQFloat(CInput::MouseX())); return 1;}SQInteger s_MouseY(HSQUIRRELVM v){ sq_pushfloat(v, SQFloat(CInput::MouseY())); return 1;}SQInteger s_KeyDown(HSQUIRRELVM v){ SQInteger k; sq_getinteger(v, 2, &k); sq_pushbool(v, (SQBool)CInput::KeyDown(ToFallenKey(k))); return 1;}SQInteger s_Cls(HSQUIRRELVM v){ CGraphics::Cls(); return 0;}SQInteger s_Flip(HSQUIRRELVM v){ CGraphics::Flip(); return 0;}SQInteger s_UpdateInput(HSQUIRRELVM v){ CInput::Update(); return 0;}SQInteger s_UpdateSystem(HSQUIRRELVM v){ sq_pushbool(v, (SQBool)CSystem::Update()); return 1;}SQRESULT register_functions(HSQUIRRELVM v){ SquirrelVM::CreateFunctionGlobal(s_DrawRect, _SC("DrawRect"), _SC("*")); SquirrelVM::CreateFunctionGlobal(s_SetDrawColor, _SC("SetDrawColor"), _SC("*")); SquirrelVM::CreateFunctionGlobal(s_MouseX, _SC("MouseX"), _SC("")); SquirrelVM::CreateFunctionGlobal(s_MouseY, _SC("MouseY"), _SC("")); SquirrelVM::CreateFunctionGlobal(s_Flip, _SC("Flip"), _SC("")); SquirrelVM::CreateFunctionGlobal(s_Cls, _SC("Cls"), _SC("")); SquirrelVM::CreateFunctionGlobal(s_UpdateInput, _SC("UpdateInput"), _SC("")); SquirrelVM::CreateFunctionGlobal(s_KeyDown, _SC("KeyDown"), _SC("*")); SquirrelVM::CreateFunctionGlobal(s_UpdateSystem, _SC("UpdateSystem"), _SC("")); return SQ_OK;}int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){/* Game* game = new Game(); game->Run(); delete game;*/ // Load modules CSystem::LoadModule(); CGraphics::LoadModule(); CInput::LoadModule(); // Set the interfaces CSystem::SetInterface(CSystem::Interface_Win32()); CGraphics::SetInterface(CGraphics::Interface_OpenGL()); CInput::SetInterface(CInput::Interface_Win32()); // Setup the graphics context CGraphics::CreateContext("Fallen Smash Bash", 800, 600, 32, false); CGraphics::SetMaskColor(255, 0, 255); CGraphics::SetVSync(true); CGraphics::SetHandle(0, 0); bool running = true; SquirrelVM::Init(); register_functions(SquirrelVM::GetVMPtr()); SquirrelObject test; test = SquirrelVM::CompileScript("script.nut"); //while (running == true) //{ //running = CSystem::Update(); //CInput::Update(); //CGraphics::Cls(); SquirrelVM::RunScript(test); //CGraphics::DrawRect(100, 100, 100, 100); //CGraphics::Flip(); //if (CInput::KeyPressed(KEY_ESCAPE)) // running = false; //} SquirrelVM::Shutdown(); CGraphics::DestroyContext(); CGraphics::UnloadModule(); CSystem::UnloadModule(); CInput::UnloadModule(); CResourceManager::UnloadResources();}Oh I also got a really SUPER COOL book the other day that cost about GBP100 -`Character Modeling 2 - /Ballistic/ book number '0145'` It came with a certificate and four prints of some of the works found inside.
