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authorfrosch <frosch@openttd.org>2009-10-24 18:51:21 +0000
committerfrosch <frosch@openttd.org>2009-10-24 18:51:21 +0000
commit8e23ba540c62bce9cba1f58435b019757869ed29 (patch)
tree0a9b0c85926507c30126791c066a741e1445d958 /src
parent64f9ee3a2dce292a6d6980b0c65b2d2dbfc3f570 (diff)
downloadopenttd-8e23ba540c62bce9cba1f58435b019757869ed29.tar.xz
(svn r17857) -Fix (r10442): [NewGRF] 'subtract-in' is also signed for production callback version 0.
Diffstat (limited to 'src')
-rw-r--r--src/newgrf.cpp6
-rw-r--r--src/newgrf_industries.cpp4
-rw-r--r--src/newgrf_spritegroup.h4
3 files changed, 7 insertions, 7 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);
diff --git a/src/newgrf_industries.cpp b/src/newgrf_industries.cpp
index 42f0f4fc7..e361f65f4 100644
--- a/src/newgrf_industries.cpp
+++ b/src/newgrf_industries.cpp
@@ -502,7 +502,7 @@ bool CheckIfCallBackAllowsAvailability(IndustryType type, IndustryAvailabilityCa
return true;
}
-static int32 DerefIndProd(uint field, bool use_register)
+static int32 DerefIndProd(int field, bool use_register)
{
return use_register ? (int32)GetRegister(field) : field;
}
@@ -543,7 +543,7 @@ void IndustryProductionCallback(Industry *ind, int reason)
bool deref = (group->version == 1);
for (uint i = 0; i < 3; i++) {
- ind->incoming_cargo_waiting[i] = Clamp(ind->incoming_cargo_waiting[i] - DerefIndProd(group->substract_input[i], deref) * multiplier, 0, 0xFFFF);
+ ind->incoming_cargo_waiting[i] = Clamp(ind->incoming_cargo_waiting[i] - DerefIndProd(group->subtract_input[i], deref) * multiplier, 0, 0xFFFF);
}
for (uint i = 0; i < 2; i++) {
ind->produced_cargo_waiting[i] = Clamp(ind->produced_cargo_waiting[i] + max(DerefIndProd(group->add_output[i], deref), 0) * multiplier, 0, 0xFFFF);
diff --git a/src/newgrf_spritegroup.h b/src/newgrf_spritegroup.h
index f10574bdd..69086fce2 100644
--- a/src/newgrf_spritegroup.h
+++ b/src/newgrf_spritegroup.h
@@ -279,8 +279,8 @@ struct IndustryProductionSpriteGroup : SpriteGroup {
IndustryProductionSpriteGroup() : SpriteGroup(SGT_INDUSTRY_PRODUCTION) {}
uint8 version;
- uint16 substract_input[3];
- uint16 add_output[2];
+ int16 subtract_input[3]; // signed
+ uint16 add_output[2]; // unsigned
uint8 again;
};