From 093284f565128270103b8a585d32abf4f6c1df7c Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Wed, 9 Jun 2021 07:24:17 +0200
Subject: [PATCH] add hack for armada

---
 inc/dd.h        |  1 +
 src/config.c    |  3 +++
 src/ddsurface.c | 39 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+)

diff --git a/inc/dd.h b/inc/dd.h
index a2aa12b..1a9b7ef 100644
--- a/inc/dd.h
+++ b/inc/dd.h
@@ -115,6 +115,7 @@ typedef struct cnc_ddraw
     BOOL gdilinear;
     BOOL backbuffer;
     BOOL passthrough;
+    BOOL armadahack;
     int maxgameticks;
     BOOL alt_key_down;
     BOOL bnet_active;
diff --git a/src/config.c b/src/config.c
index 4251ecd..6e8b63c 100644
--- a/src/config.c
+++ b/src/config.c
@@ -56,6 +56,8 @@ void cfg_load()
     g_ddraw->backbuffer = cfg_get_bool("backbuffer", TRUE);
     g_ddraw->passthrough = cfg_get_bool("passthrough", TRUE);
 
+    g_ddraw->armadahack = cfg_get_bool("armadahack", FALSE);
+
     g_config.window_rect.right = cfg_get_int("width", 0);
     g_config.window_rect.bottom = cfg_get_int("height", 0);
     g_config.window_rect.left = cfg_get_int("posX", -32000);
@@ -706,6 +708,7 @@ static void cfg_create_ini()
             "\n"
             "; Star Trek - Armada\n"
             "[Armada]\n"
+            "armadahack=true\n"
             "renderer=opengl\n"
             "nonexclusive=true\n"
             "handlemouse=false\n"
diff --git a/src/ddsurface.c b/src/ddsurface.c
index 0d79386..2d9d2fa 100644
--- a/src/ddsurface.c
+++ b/src/ddsurface.c
@@ -1200,6 +1200,45 @@ HRESULT dds_Unlock(IDirectDrawSurfaceImpl *This, LPVOID lpRect)
         }
     }
 
+
+    hwnd = g_ddraw->armadahack ? FindWindowEx(HWND_DESKTOP, NULL, "#32770", NULL) : NULL;
+
+    if (hwnd && (This->caps & DDSCAPS_PRIMARYSURFACE))
+    {
+        HDC primary_dc;
+        dds_GetDC(g_ddraw->primary, &primary_dc);
+
+        RECT rc;
+        if (fake_GetWindowRect(hwnd, &rc))
+        {
+            HDC hdc = GetDC(hwnd);
+
+            GdiTransparentBlt(
+                hdc,
+                0,
+                0,
+                rc.right - rc.left,
+                rc.bottom - rc.top,
+                primary_dc,
+                rc.left,
+                rc.top,
+                rc.right - rc.left,
+                rc.bottom - rc.top,
+                0
+            );
+
+            ReleaseDC(hwnd, hdc);
+        }
+
+        BOOL x = g_ddraw->ticks_limiter.use_blt_or_flip;
+
+        DDBLTFX fx = { .dwFillColor = 0 };
+        IDirectDrawSurface_Blt(This, NULL, NULL, NULL, DDBLT_COLORFILL, &fx);
+
+        g_ddraw->ticks_limiter.use_blt_or_flip = x;
+    }
+
+
     if ((This->caps & DDSCAPS_PRIMARYSURFACE) && g_ddraw->render.run)
     {
         InterlockedExchange(&g_ddraw->render.surface_updated, TRUE);