(svn r17857) -Fix (r10442): [NewGRF] 'subtract-in' is also signed for production callback version 0.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 28dca23b0..aa07f1774 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -2966,15 +2966,15 @@ static void NewSpriteGroup(byte *buf, size_t len)
 					group->version = type;
 					if (type == 0) {
 						for (uint i = 0; i < 3; i++) {
-							group->substract_input[i] = grf_load_word(&buf);
+							group->subtract_input[i] = (int16)grf_load_word(&buf); // signed
 						}
 						for (uint i = 0; i < 2; i++) {
-							group->add_output[i] = grf_load_word(&buf);
+							group->add_output[i] = grf_load_word(&buf); // unsigned
 						}
 						group->again = grf_load_byte(&buf);
 					} else {
 						for (uint i = 0; i < 3; i++) {
-							group->substract_input[i] = grf_load_byte(&buf);
+							group->subtract_input[i] = grf_load_byte(&buf);
 						}
 						for (uint i = 0; i < 2; i++) {
 							group->add_output[i] = grf_load_byte(&buf);