Name all sacred.exe addresses in src/game/addresses.h

Hooks now refer to addr::* instead of literal addresses; the header also
lists the world view's users of the 1024.0/768.0 constants and the ortho
projection extent pushes for the widescreen work.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

src/game/addresses.h

@@ -0,0 +1,47 @@
+#pragma once
+// Every sacred.exe address we use, in one place (Sacred Gold 2.28, image base
+// 0x400000, no ASLR). Hooks, patches and docs refer to these names; see
+// docs/function-map.md and docs/widescreen.md for what each one does.
+
+#include <cstdint>
+
+namespace game::addr {
+
+// --- functions ---------------------------------------------------------------
+constexpr uint32_t Log = 0x0066f1c0;
+constexpr uint32_t CmdLineHasFlag = 0x00813140;
+constexpr uint32_t GetMouseClientPos = 0x0066e500;
+constexpr uint32_t MainWindowProc = 0x008122a0;
+constexpr uint32_t DxDriver7_SetDisplayMode = 0x00645390;
+constexpr uint32_t DxDriver7_Flip = 0x00645f70;
+constexpr uint32_t WorldView0_SetupView = 0x00624ae0;
+constexpr uint32_t WorldView0_SetZoom = 0x00628210;
+constexpr uint32_t WorldView0_Render = 0x006322b0;
+constexpr uint32_t WorldToScreen = 0x00623c40;
+
+// --- globals -----------------------------------------------------------------
+constexpr uint32_t g_dxDriver = 0x00cda99c;  // DxDriver7*
+constexpr uint32_t g_appFlags = 0x0182cdb8;  // uint32_t, 0x20000 = inactive
+
+// --- read-only constants -----------------------------------------------------
+constexpr uint32_t kScreenWidthF = 0x0088e6f4;  // float 1024.0
+constexpr uint32_t kScreenHeightF = 0x00890040;  // float 768.0
+
+// Instructions in the world view that read kScreenWidthF / kScreenHeightF as
+// a memory operand (fmul/fcomp dword ptr [addr]). Redirecting their operand
+// resizes the world view without touching the UI's uses of the same floats.
+constexpr uint32_t kViewWidthUsers[] = {
+    0x0061e5c2, 0x00623c82, 0x00624af2, 0x00628f65, 0x00629294,
+    0x0062b43a, 0x0062dc32, 0x0062ea2b, 0x0062f30d, 0x00630656, 0x00630f3f,
+};
+constexpr uint32_t kViewHeightUsers[] = {
+    0x0061e5ec, 0x00623c9c, 0x00624b03, 0x00628f8f, 0x006292bc,
+    0x0062ea5e, 0x0062f345, 0x0063068a, 0x00630f77,
+};
+
+// push sequences of the 3D models' ortho extents (-267, 267, -200, 200).
+constexpr uint32_t kOrthoExtentPushes[] = {
+    0x0060c1f7, 0x0060da54, 0x00625039, 0x006283b3, 0x0062858d, 0x00628d3b,
+};
+
+} // namespace game::addr