Initial commit

src/core.cpp

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+#include "core.hpp"

src/core.hpp

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+#ifndef CORE_HPP
+
+
+typedef bool32 unsigned; // Need to find a clean way of representing this
+
+typedef Mat4 D3DVECTOR4[4]; // Should probably be defined somewhere else
+
+struct GraphicsPerformanceCounters { // Would come from header with Graphics COM object
+	unsigned fps;
+	unsigned trianglesPerSecond;
+	unsigned frameTriangleCnt;
+	unsigned unknown0xC;
+	unsigned unknown0x10;
+	unsigned unknown0x14;
+}
+
+enum DrawMode { DRAW_YES, DRAW_WAITVBLANK, DRAW_NO };
+
+// Base class of most objects
+class GameObj {
+	enum GameObjFlags {
+		GOF_SOMETHINGLINKED_ALTLIST    = 1 <<  0,
+		GOF_SKIPDRAWCHILDREN           = 1 << 16,
+		GOF_SKIPDRAWASCHILD            = 1 << 18,
+		GOF_SKIPDRAWASROOT             = 1 << 22,
+		GOF_EXCLUDEFROMSOMETHINGLINKED = 1 << 30,
+		GOF_DELETEAFTEREXEC            = 1 << 31
+	} flags;
+
+	// Position in g_game->objects array
+	// Different indices and ranges are dedicated to different kinds of
+	// objecs.
+	enum GameObjIndex {
+		OBJ_NOTINDEXED = -1, // Not stored in array
+		OBJ_DIRECTOR   =  0
+		// TODO
+	} index;
+
+	unsigned  unknown0xC;
+	float     unknown0x10;
+	unsigned  sortKey; // Four-level key, one byte each
+	D3DVECTOR unknown0x18;
+
+	// Links forming a tree of objects
+	GameObj * parent;
+	GameObj * firstChild;
+	GameObj * prevSibling;
+	GameObj * nextSibling;
+
+	// Some kind of linked list walked during rendering
+	GameObj *     somethingLinkedNext;
+	GameObj * *   somethingLinkedPrevNext;
+	GameObj * * * somethingLinkedEndNextPtr;
+
+	// Another linked list sort of arrangement
+	GameObj * someKindOfNextObj;
+
+public:
+	virtual ~GameObj();
+	GameObj(GameObj * parent, GameObjIndex index, GameObjFlags flags);
+
+	// Each frame, one of these trios of methods is called depending on
+	// which state the game is in
+	// Default implementation of each does nothing; inheriting objects
+	// override these methods to run some code during each phase of each
+	// frame.
+	virtual void execDefault();
+	virtual void postExecDefault();
+	virtual void drawDefault();
+
+	virtual void execEvent();
+	virtual void postExecEvent();
+	virtual void drawEvent();
+
+	virtual void execCoveredPause();
+	virtual void postExecCoveredPause();
+	virtual void drawCoveredPause();
+
+	virtual void execFreezeCam();
+	virtual void postExecFreezeCam();
+	virtual void drawFreezeCam();
+
+	virtual void execUncoveredPause();
+	virtual void postExecUncoveredPause();
+	virtual void drawUncoveredPause();
+
+	// TODO: non-virtual methods
+};
+
+// Top-level globally-accessible "god object" that runs the main loop and
+// provides global access to most other objects and many variables
+class Game {
+	char         unknown0x4[4];
+	unsigned     unknown0x8;
+	unsigned *   unknown0xC;
+	int          initState;
+	unsigned     unknown0x14;
+	bool32       drawProfilingInfo;
+	int          unknown0x1C;
+	bool32       logosStarted;
+	bool32       fatalErr;
+
+	D3DCOLOR     colour;
+	D3DCOLOR     ambientColour;
+	D3DCOLOR     shadowColour;
+	D3DCOLOR     bgColour;
+	D3DCOLOR     bgColourFallback;
+	bool32       useFallbackBgColour;
+
+	// Game state used to select GameObj methods to call in main loop
+	// If multiple states are acivated, the precedence is
+	//     coveredPause > Event > FreezeCam > UncoveredPause > Default
+	bool32       coveredPause;   // Game paused with world not visible
+	bool32       event;          // Events (cutscenes)
+	bool32       freezeCam;      // Time-frozen camera shots
+	bool32       uncoveredPause; // Game paused with world visible, or
+	                             // automatic pause at start of mission
+
+	bool32       setCoveredPauseNextFrame;
+	bool32       unsetCoveredPauseNextFrame;
+	bool32       setEventNextFrame;
+	bool32       unsetEventNextFrame;
+	bool32       setFreezeCamNextFrame;
+	bool32       unsetFreezeCamNextFrame;
+	bool32       setUncoveredPauseNextFrame;
+	bool32       unsetUncoveredPauseNextFrame;
+
+	unsigned     unknown0x70;
+	bool32       skipDraw;
+	int          zeroedByExec;
+	GraphicsPerformanceCounters perfCounters;
+	DrawMode     drawMode;
+
+	// Globally accessible objects and variables
+	GameObj  *   objects[7668];
+	unsigned     globals[461]; // Items may be any 32-bit type, e.g. ptr
+
+	GameObj  *   somethingLinkedBHead;
+	GameObj  * * somethingLinkedBEndNext;
+
+	GameObj  *   somethingLinkedAHead;
+	GameObj  * * somethingLinkedAEndNext;
+
+	GameObj  *   sortedLinkedListHead;
+	GameObj  * * sortedLinkedListEndNext;
+
+	GameObj  *   linkedListsByKeyHeads  [256];
+	GameObj  * * linkedListByKeyEndNexts[256];
+
+	unsigned     unknown0x87B4;
+
+	LARGE_INTEGER execPerfCount;
+	LARGE_INTEGER drawPerfCount;
+
+	unsigned     unknown0x87C8;
+	unsigned     unknown0x87CC;
+	unsigned     frameCnt1;
+	unsigned     unknown0x87D4;
+	unsigned     unknown0x87D8;
+	GameObj  *   rootExecObj;
+	int          frameCnt2;
+	int          frameCnt3;
+	unsigned     gameObjCnt;
+	GameObj  *   rootDrawObj;
+	int          unknown0x87F0;
+	int          unknown0x87F4;
+	Mat4         unknown0x87F8;
+	unsigned     unknown0x8838;
+	unsigned     unknown0x883C;
+
+public:
+	Game(unsigned *, unsigned);
+	virtual ~Game();
+
+	// TODO: methods
+};
+
+
+#endif

src/jet2.cpp

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+#include "core.hpp"
+
+
+// Address: 0x0022FCE0
+Game * g_game;
+
+
+// Address: 0x0006F9E0
+// Matching: no
+void main(void) {
+    g_game = new Game(NULL, 0);
+    g_game->initExecRootObj();
+    g_game->mainLoop();
+    delete g_game;
+}

src/mmatrix.cpp

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+// Address: 0x001BB690
+// Matching: yes
+HRESULT __stdcall initMatrices(unsigned const count) {
+/* Initialize the matrix stack with the given number of matrices.
+The requested number of matrices is rounded up to the nearest multiple of two.
+The initialized matrices are accessible through g_matrices.
+*/
+	// Allocate matrices
+	unsigned     i    = (count + 1) & 0xFFFFFFFE; // Round up
+	Mat4 * const mats = (Mat4 *)VirtualAlloc(
+		NULL,
+		(i + 2) * sizeof *mats,
+		MEM_COMMIT|MEM_RESERVE,
+		PAGE_READWRITE
+	);
+	if (mats != NULL) {
+		Mat4 * mat = mats + 2;
+
+		// Initialize each matrix to identity
+		if (i > 0) for (; i > 0; i--) {
+			float * entry = (float *)mat;
+
+			for (unsigned j = 0; j < sizeof *mat/sizeof *entry; j++) {
+				*entry  = 0;
+				entry  += 1;
+			}
+
+			(*mat)[3].w = 1;
+			(*mat)[2].z = 1;
+			(*mat)[1].y = 1;
+			(*mat)[0].x = 1;
+			mat++;
+		}
+
+		// Assign to g_matrices for later access
+		mat            = mats + 2;
+		g_matrices[1]  = mats;
+		g_matrices[2]  = mat;
+		g_matrices[0]  = mats;
+		g_matricesHead = g_matrices + 2;
+
+		return ERROR_SUCCESS;
+	}
+
+	return E_OUTOFMEMORY;
+}