From 9d93fca8d32c5b96e251380babb9af5bf5301d99 Mon Sep 17 00:00:00 2001
From: Paul Gilbert
Date: Wed, 24 Oct 2012 21:54:54 +1100
Subject: HOPKINS: Manually implemented Reduc_Ecran

---
 engines/hopkins/graphics.cpp | 64 +++++++++++++++++---------------------------
 engines/hopkins/graphics.h   |  2 +-
 engines/hopkins/menu.cpp     |  5 ++--
 3 files changed, 29 insertions(+), 42 deletions(-)

(limited to 'engines/hopkins')

diff --git a/engines/hopkins/graphics.cpp b/engines/hopkins/graphics.cpp
index 4495698321..64af872727 100644
--- a/engines/hopkins/graphics.cpp
+++ b/engines/hopkins/graphics.cpp
@@ -2470,52 +2470,38 @@ Video_Cont_Vbe:
 }
 
 // Reduce Screen
-// TODO: Check that v9 doesn't get set anywhere (apart from the current init to zero)
-void GraphicsManager::Reduc_Ecran(byte *a1, byte *a2, int a3, int a4, int a5, int a6, int a7) {
-	byte *v7; 
-	byte *v8; 
-	int v9 = 0; 
-	int v10 = 0; 
-	int v11; 
-	int v12; 
-	byte *v13; 
-	int v14; 
+void GraphicsManager::Reduc_Ecran(const byte *srcSurface, byte *destSurface, int xp, int yp, int width, int height, int zoom) {
+	const byte *srcP; 
+	byte *destP; 
+	const byte *lineSrcP;
 
-	v7 = a3 + nbrligne2 * a4 + a1;
-	v8 = a2;
-	Red = a7;
-	Largeur = a5;
+	srcP = xp + nbrligne2 * yp + srcSurface;
+	destP = destSurface;
+	Red = zoom;
+	Largeur = width;
 	Red_x = 0;
 	Red_y = 0;
-	if (a7 < 100) {
-		Reduc_Ecran_L = Asm_Reduc(a5, Red);
-		Reduc_Ecran_H = Asm_Reduc(v9, Red);
-		v11 = Red;
-		do {
-			v14 = v10;
-			v13 = v7;
-			Red_y += v11;
-			if ((uint16)Red_y < 0x64u) {
+	if (zoom < 100) {
+		Reduc_Ecran_L = Asm_Reduc(width, Red);
+		Reduc_Ecran_H = Asm_Reduc(height, Red);
+
+		for (int yCtr = 0; yCtr < Reduc_Ecran_H; ++yCtr, Red_y -= 100, srcP += nbrligne2) {
+			Red_y += Red;
+			if (Red_y < 100) {
 				Red_x = 0;
-				v12 = Largeur;
-				do {
-					Red_x += v11;
-					if ((uint16)Red_x < 0x64u) {
-						*v8++ = *v7++;
+				lineSrcP = srcP;
+
+				for (int xCtr = 0; xCtr < Largeur; ++xCtr) {
+					Red_x += Red;
+					if (Red_x < 100) {
+						*destP++ = *lineSrcP++;
 					} else {
-						Red_x = Red_x - 100;
-						++v7;
+						Red_x -= 100;
+						++lineSrcP;
 					}
-					--v12;
-				} while (v12);
-				v10 = v14;
-				v7 = nbrligne2 + v13;
-			} else {
-				Red_y = Red_y - 100;
-				v7 += nbrligne2;
+				}
 			}
-			--v10;
-		} while (v10);
+		}
 	}
 }
 
diff --git a/engines/hopkins/graphics.h b/engines/hopkins/graphics.h
index ff589b9061..18f600a184 100644
--- a/engines/hopkins/graphics.h
+++ b/engines/hopkins/graphics.h
@@ -183,7 +183,7 @@ public:
 	void videkey();
 	void Copy_WinScan_Vbe(const byte *srcP, byte *destP);
 	void Copy_Video_Vbe(const byte *src);
-	void Reduc_Ecran(byte *a1, byte *a2, int a3, int a4, int a5, int a6, int a7);
+	void Reduc_Ecran(const byte *srcSruface, byte *destSurface, int xp, int yp, int width, int height, int zoom);
 	void Plot_Hline(byte *surface, int xp, int yp, unsigned int width, byte col);
 	void Plot_Vline(byte *surface, int xp, int yp, int height, char col);
 };
diff --git a/engines/hopkins/menu.cpp b/engines/hopkins/menu.cpp
index 8b3010fc02..a6460f0b5a 100644
--- a/engines/hopkins/menu.cpp
+++ b/engines/hopkins/menu.cpp
@@ -321,7 +321,8 @@ void MenuManager::SAUVE_PARTIE() {
 
 	_vm->_eventsManager.VBL();
 	v1 = _vm->_globals.dos_malloc2(0x2DB4u);
-	_vm->_graphicsManager.Reduc_Ecran(_vm->_graphicsManager.VESA_BUFFER, v1, _vm->_eventsManager.start_x, 20, SCREEN_WIDTH * 2, 440, 0x50u);
+	_vm->_graphicsManager.Reduc_Ecran(_vm->_graphicsManager.VESA_BUFFER, v1, _vm->_eventsManager.start_x, 20, 
+		SCREEN_WIDTH, SCREEN_HEIGHT - 40, 80);
 	_vm->_graphicsManager.INIT_TABLE(45, 80, _vm->_graphicsManager.Palette);
 	_vm->_graphicsManager.Trans_bloc2(v1, _vm->_graphicsManager.TABLE_COUL, 11136);
 	LOAD_SAUVE(1);
@@ -529,7 +530,7 @@ void MenuManager::COMPUT_HOPKINS(int idx) {
 					LIT_TEXTE(8);
 				if (v12 == 53)
 					LIT_TEXTE(9);
-				if (v12 == 54) {
+				if (v12ii == 54) {
 					LIT_TEXTE(10);
 					_vm->_globals.SAUVEGARDE->data[svField270] = 4;
 				}
-- 
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