1 files changed, 165 insertions, 0 deletions
diff --git a/archive/hgehelp/hgeanim.cpp b/archive/hgehelp/hgeanim.cpp
new file mode 100644
index 0000000..0e370db
--- /dev/null
+++ b/archive/hgehelp/hgeanim.cpp
@@ -0,0 +1,165 @@
+/*
+** Haaf's Game Engine 1.7
+** Copyright (C) 2003-2007, Relish Games
+** hge.relishgames.com
+**
+** hgeAnimation helper class implementation
+*/
+
+
+#include "hgeanim.h"
+
+
+hgeAnimation::hgeAnimation(HTEXTURE tex, int nframes, float FPS, float x, float y, float w, float h)
+	: hgeSprite(tex, x, y, w, h)
+{
+	orig_width = hge->Texture_GetWidth(tex, true);
+
+	fSinceLastFrame=-1.0f;
+	fSpeed=1.0f/FPS;
+	bPlaying=false;
+	nFrames=nframes;
+
+	Mode=HGEANIM_FWD | HGEANIM_LOOP;
+	nDelta=1;
+	SetFrame(0);
+}
+
+hgeAnimation::hgeAnimation(const hgeAnimation & anim)
+: hgeSprite(anim)
+{
+	// Copy hgeAnimation parameters:
+	this->orig_width	  = anim.orig_width;
+	this->bPlaying        = anim.bPlaying;
+	this->fSpeed          = anim.fSpeed;
+	this->fSinceLastFrame = anim.fSinceLastFrame;
+	this->Mode            = anim.Mode;
+	this->nDelta          = anim.nDelta;
+	this->nFrames         = anim.nFrames;
+	this->nCurFrame       = anim.nCurFrame;
+}
+
+void hgeAnimation::SetMode(int mode)
+{
+	Mode=mode;
+
+	if(mode & HGEANIM_REV)
+	{
+		nDelta = -1;
+		SetFrame(nFrames-1);
+	}
+	else
+	{
+		nDelta = 1;
+		SetFrame(0);
+	}
+}
+
+
+void hgeAnimation::Play()
+{
+	bPlaying=true;
+	fSinceLastFrame=-1.0f;
+	if(Mode & HGEANIM_REV)
+	{
+		nDelta = -1;
+		SetFrame(nFrames-1);
+	}
+	else
+	{
+		nDelta = 1;
+		SetFrame(0);
+	}
+}
+
+
+void hgeAnimation::Update(float fDeltaTime)
+{
+	if(!bPlaying) return;
+
+	if(fSinceLastFrame == -1.0f)
+		fSinceLastFrame=0.0f;
+	else
+		fSinceLastFrame += fDeltaTime;
+
+	while(fSinceLastFrame >= fSpeed)
+	{
+		fSinceLastFrame -= fSpeed;
+
+		if(nCurFrame + nDelta == nFrames)
+		{
+			switch(Mode)
+			{
+				case HGEANIM_FWD:
+				case HGEANIM_REV | HGEANIM_PINGPONG:
+					bPlaying = false;
+					break;
+
+				case HGEANIM_FWD | HGEANIM_PINGPONG:
+				case HGEANIM_FWD | HGEANIM_PINGPONG | HGEANIM_LOOP:
+				case HGEANIM_REV | HGEANIM_PINGPONG | HGEANIM_LOOP:
+					nDelta = -nDelta;
+					break;
+			}
+		}
+		else if(nCurFrame + nDelta < 0)
+		{
+			switch(Mode)
+			{
+				case HGEANIM_REV:
+				case HGEANIM_FWD | HGEANIM_PINGPONG:
+					bPlaying = false;
+					break;
+
+				case HGEANIM_REV | HGEANIM_PINGPONG:
+				case HGEANIM_REV | HGEANIM_PINGPONG | HGEANIM_LOOP:
+				case HGEANIM_FWD | HGEANIM_PINGPONG | HGEANIM_LOOP:
+					nDelta = -nDelta;
+					break;
+			}
+		}
+
+		if(bPlaying) SetFrame(nCurFrame+nDelta);
+	}
+}
+
+void hgeAnimation::SetFrame(int n)
+{
+	float tx1, ty1, tx2, ty2;
+	bool bX, bY, bHS;
+	int ncols = int(orig_width) / int(width);
+
+
+	n = n % nFrames;
+	if(n < 0) n = nFrames + n;
+	nCurFrame = n;
+
+	// calculate texture coords for frame n
+	ty1 = ty;
+	tx1 = tx + n*width;
+
+	if(tx1 > orig_width-width)
+	{
+		n -= int(orig_width-tx) / int(width);
+		tx1 = width * (n%ncols);
+		ty1 += height * (1 + n/ncols);
+	}
+
+	tx2 = tx1 + width;
+	ty2 = ty1 + height;
+
+	tx1 /= tex_width;
+	ty1 /= tex_height;
+	tx2 /= tex_width;
+	ty2 /= tex_height;
+
+	quad.v[0].tx=tx1; quad.v[0].ty=ty1;
+	quad.v[1].tx=tx2; quad.v[1].ty=ty1;
+	quad.v[2].tx=tx2; quad.v[2].ty=ty2;
+	quad.v[3].tx=tx1; quad.v[3].ty=ty2;
+
+	bX=bXFlip; bY=bYFlip; bHS=bHSFlip;
+	bXFlip=false; bYFlip=false;
+	SetFlip(bX,bY,bHS);
+}
+