World: add world/sky material colour modulation

Port Amalgam's modulation approach: obtain IMaterialSystem from the already
loaded materialsystem.so (VMaterialSystem080) and walk materials with
FirstMaterial/NextMaterial/GetMaterial. ColorModulate the "World textures"
group (sky names excluded) and the "SkyBox textures"/sky-named group.

The walk runs only when the enabled groups or colours change, restores white
when disabled, and re-applies after level changes. Before touching materials,
GetNumMaterials() and the first material's name/group are sanity-checked so a
wrong vtable slot logs and aborts instead of walking garbage.

GUI: "World tint" card with world/sky toggles and RGB sliders; config section
[worldtint].

1 files changed, 1 insertions, 1 deletions

diff --git a/build.sh b/build.sh
index 51b1ca9..b59f20e 100755
--- a/build.sh
+++ b/build.sh
@@ -3,6 +3,6 @@ set -e
 cd "$(dirname "$0")"
 g++ -m32 -O2 -std=c++17 -Wall -Wextra -Werror -fPIC -shared -fvisibility=hidden -fno-omit-frame-pointer \
     -o libhl2hake.so \
-    src/hl2h.cpp src/modules.cpp src/cinput.cpp src/netvars.cpp src/menu.cpp src/gui.cpp src/esp.cpp src/server.cpp src/bones.cpp src/vischeck.cpp \
+    src/hl2h.cpp src/modules.cpp src/cinput.cpp src/netvars.cpp src/menu.cpp src/gui.cpp src/esp.cpp src/server.cpp src/bones.cpp src/vischeck.cpp src/world.cpp \
     -ldl -Wl,--no-undefined
 file libhl2hake.so