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-rw-r--r--engines/sci/engine/script_patches.cpp129
1 files changed, 127 insertions, 2 deletions
diff --git a/engines/sci/engine/script_patches.cpp b/engines/sci/engine/script_patches.cpp
index c13e4252e2..635328a812 100644
--- a/engines/sci/engine/script_patches.cpp
+++ b/engines/sci/engine/script_patches.cpp
@@ -116,9 +116,11 @@ static const char *const selectorNameTable[] = {
"has", // King's Quest 6, GK1
"modeless", // King's Quest 6 CD
"cycler", // Space Quest 4 / system selector
+ "setCel", // Space Quest 4, Phant2, GK1
"addToPic", // Space Quest 4
"stop", // Space Quest 4
"canControl", // Space Quest 4
+ "looper", // Space Quest 4
"loop", // Laura Bow 1 Colonel's Bequest, QFG4
"setLoop", // Laura Bow 1 Colonel's Bequest, QFG4
"ignoreActors", // Laura Bow 1 Colonel's Bequest
@@ -147,7 +149,6 @@ static const char *const selectorNameTable[] = {
"data", // Phant2, QFG4
"format", // Phant2
"setSize", // Phant2
- "setCel", // Phant2, GK1
"iconV", // Phant2
"update", // Phant2
"xOff", // Phant2
@@ -214,9 +215,11 @@ enum ScriptPatcherSelectors {
SELECTOR_has,
SELECTOR_modeless,
SELECTOR_cycler,
+ SELECTOR_setCel,
SELECTOR_addToPic,
SELECTOR_stop,
SELECTOR_canControl,
+ SELECTOR_looper,
SELECTOR_loop,
SELECTOR_setLoop,
SELECTOR_ignoreActors,
@@ -246,7 +249,6 @@ enum ScriptPatcherSelectors {
SELECTOR_data,
SELECTOR_format,
SELECTOR_setSize,
- SELECTOR_setCel,
SELECTOR_iconV,
SELECTOR_update,
SELECTOR_xOff,
@@ -11399,6 +11401,122 @@ static const uint16 sq4CdPatchCedricLockup2[] = {
PATCH_END
};
+// Dodging a biker in Ulence Flats before they've reached their first checkpoint
+// causes the player to prematurely regain control, allowing them to break the
+// game by walking to another room before the dodge sequence completes. This is
+// due to the biker scripts in each room having an unnecessary handsOn call, so
+// we remove it. This does not reduce the time that the player has to react,
+// the scripts theDodgeL and theDodgeR call handsOn when ego crouches.
+//
+// Biker bugs like this only occur in the CD version due to its slower bikes.
+//
+// Applies to: English PC CD
+// Responsible methods: runOverScript1-3:changeState, runOver:changeState,
+// runOver2:changeState, runOverScript:changeState
+// Fixes bug #9806
+static const uint16 sq4CdSignatureBikerHandsOn[] = {
+ 0x38, SIG_UINT16(0x02bb), // pushi status [ hard-coded for CD ]
+ 0x78, // push1
+ SIG_MAGICDWORD,
+ 0x39, 0x04, // pushi 04
+ 0x51, 0x98, // class ulence
+ 0x4a, 0x06, // send 06 [ ulence status: 4 ]
+ 0x76, // push0
+ 0x45, 0x03, 0x00, // callb proc0_3 [ handsOn ]
+ SIG_END
+};
+
+static const uint16 sq4CdPatchBikerHandsOn[] = {
+ PATCH_ADDTOOFFSET(+10),
+ 0x33, 0x02, // jmp 02 [ skip handsOn ]
+ PATCH_END
+};
+
+// Clicking Look/Do/etc on an object in Ulence Flats while a biker approaches
+// can bring ego out of crouch-mode and allow the player to break the game by
+// walking to another room before the dodge sequence completes. This occurs if
+// ego isn't facing the object. Ego's heading will be changed and ultimately
+// stopGroop:doit will reset ego's view to walking.
+//
+// We fix this by clearing ego:looper when placing ego into crouch mode. This
+// causes Actor:setHeading to instead use kDirLoop which respects the flag
+// kSignalDoesntTurn. ego:looper is automatically restored after dodging.
+//
+// Applies to: English PC CD
+// Responsible methods: theDodgeR:changeState, theDodgeL:changeState
+// Fixes bug #9806
+static const uint16 sq4CdSignatureBikerCrouchVerb[] = {
+ 0x35, 0x01, // ldi 01
+ 0x1a, // eq?
+ 0x31, 0x1a, // bnt 1a [ state 2 ]
+ 0x76, // push0
+ SIG_MAGICDWORD,
+ 0x45, 0x03, 0x00, // callb proc0_3 [ handsOn ]
+ 0x7a, // push2 [ view ]
+ 0x78, // push1
+ 0x38, SIG_UINT16(0x027b), // pushi 027b [ crouch ]
+ 0x38, SIG_SELECTOR16(setLoop), // pushi setLoop
+ 0x78, // push1
+ SIG_ADDTOOFFSET(+1), // push0 in theDodgeR, push1 in theDodgeL
+ 0x38, SIG_SELECTOR16(setCel), // pushi setCel
+ 0x78, // push1
+ 0x76, // push0
+ 0x81, 0x00, // lag 00
+ 0x4a, 0x12, // send 12 [ ego view: 635 setLoop: * setCel: 0 ]
+ 0x32, // jmp [ end of method ]
+ SIG_END
+};
+
+static const uint16 sq4CdPatchBikerCrouchVerb[] = {
+ 0x18, // not [ save a byte ]
+ 0x1a, // eq?
+ 0x31, 0x1b, // bnt 1b [ state 2 ]
+ 0x76, // push0
+ 0x39, PATCH_SELECTOR8(looper), // pushi looper
+ 0x78, // push1
+ 0x76, // push0
+ PATCH_ADDTOOFFSET(+17),
+ 0x4a, 0x18, // send 18 [ ego looper: 0 view: 635 setLoop: * setCel: 0 ]
+ 0x45, 0x03, 0x00, // callb proc0_3 [ handsOn ]
+ PATCH_END
+};
+
+// Clicking Do on the Ulence Flats bar door in room 610 while a biker approaches
+// causes ego to enter the bar before the dodge sequence completes, breaking
+// the game. Sierra forgot to test ulence:egoBusy as they did when clicking on
+// the timepod in room 613.
+//
+// We fix this by testing ulence:egoBusy before running enterBar in door:doVerb.
+// Fortunately there is already an unnecessary script test we can overwrite.
+// This script test was copied from rm610:doit where it is necessary.
+//
+// Applies to: English PC CD
+// Responsible method: door:doVerb(4)
+// Fixes bug #9806
+static const uint16 sq4CdSignatureBikerBarDoor[] = {
+ 0x38, SIG_SELECTOR16(script), // pushi script
+ 0x76, // push0
+ 0x81, 0x02, // lag 02
+ 0x4a, 0x04, // send 04 [ rm610 script? ]
+ 0x36, // push
+ 0x72, SIG_UINT16(0x014a), // lofsa enterBar
+ SIG_MAGICDWORD,
+ 0x1a, // eq? [ rm610:script == enterBar ]
+ 0x18, // not
+ 0x30, SIG_UINT16(0x0019), // bnt 0019 [ don't run enterBar ]
+ SIG_END
+};
+
+static const uint16 sq4CdPatchBikerBarDoor[] = {
+ 0x38, PATCH_UINT16(0x02cc), // pushi egoBusy [ hard-coded for CD ]
+ 0x76, // push0
+ 0x51, 0x98, // class ulence
+ 0x4a, 0x04, // send 04 [ ulence egoBusy? ]
+ 0x18, // not
+ 0x32, PATCH_UINT16(0x0002), // jmp 0002
+ PATCH_END
+};
+
// The door to Sock's is immediately disposed of in the CD version, breaking its
// Look message and preventing it from being drawn when restoring a saved game.
// We remove the incorrect dispose call along with a redundant addToPic.
@@ -11534,8 +11652,15 @@ static const SciScriptPatcherEntry sq4Signatures[] = {
{ true, 410, "CD/Floppy: zero gravity blast fix", 1, sq4SignatureZeroGravityBlast, sq4PatchZeroGravityBlast },
{ true, 411, "CD/Floppy: zero gravity blast fix", 1, sq4SignatureZeroGravityBlast, sq4PatchZeroGravityBlast },
{ true, 520, "CD: maze talk message fix", 1, sq4CdSignatureMazeTalkMessage, sq4CdPatchMazeTalkMessage },
+ { true, 610, "CD: biker bar door fix", 1, sq4CdSignatureBikerBarDoor, sq4CdPatchBikerBarDoor },
+ { true, 610, "CD: biker hands-on fix", 3, sq4CdSignatureBikerHandsOn, sq4CdPatchBikerHandsOn },
+ { true, 611, "CD: biker hands-on fix", 1, sq4CdSignatureBikerHandsOn, sq4CdPatchBikerHandsOn },
+ { true, 612, "CD: biker hands-on fix", 2, sq4CdSignatureBikerHandsOn, sq4CdPatchBikerHandsOn },
+ { true, 613, "CD: biker hands-on fix", 2, sq4CdSignatureBikerHandsOn, sq4CdPatchBikerHandsOn },
+ { true, 614, "CD: biker hands-on fix", 1, sq4CdSignatureBikerHandsOn, sq4CdPatchBikerHandsOn },
{ true, 700, "CD: red shopper message fix", 1, sq4CdSignatureRedShopperMessageFix, sq4CdPatchRedShopperMessageFix },
{ true, 701, "CD: getting shot, while getting rope", 1, sq4CdSignatureGettingShotWhileGettingRope, sq4CdPatchGettingShotWhileGettingRope },
+ { true, 706, "CD: biker crouch verb fix", 2, sq4CdSignatureBikerCrouchVerb, sq4CdPatchBikerCrouchVerb },
{ true, 0, "CD: Babble icon speech and subtitles fix", 1, sq4CdSignatureBabbleIcon, sq4CdPatchBabbleIcon },
{ true, 818, "CD: Speech and subtitles option", 1, sq4CdSignatureTextOptions, sq4CdPatchTextOptions },
{ true, 818, "CD: Speech and subtitles option button", 1, sq4CdSignatureTextOptionsButton, sq4CdPatchTextOptionsButton },
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-13 12:28:53 +0000