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SCI32: Fix pathfinding issues at the inn in QFG4

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bluegr committed Sep 1, 2018
1 parent 84f03cc commit cc09b6667144d047cf7e91376973571ef0972c01
Showing with 41 additions and 0 deletions.
  1. +41 −0 engines/sci/engine/script_patches.cpp
@@ -6191,11 +6191,52 @@ static const uint16 qfg4SlidingDownSlopePatch[] = {
PATCH_END
};
// At the inn, there is a path that goes off screen. In our pathfinding
// algorithm, we move all the pathfinding points so that they are within
// the visible area. However, two points of the path are outside the
// screen, so moving them will place them both on top of each other,
// thus creating an impossible pathfinding area. This makes the
// pathfinding algorithm ignore the walkable area when the hero moves
// up the ladder to his room. We therefore move one of the points
// slightly, so that it is already within the visible screen, so that
// the walkable polygon is valid, and the pathfinding algorithm can
// work properly.
//
// Applies to: English CD, English floppy, German floppy
//
// Fixes bug #10693
static const uint16 qg4InnPathfindingSignature[] = {
SIG_MAGICDWORD,
0x38, SIG_UINT16(0x0154), // pushi x = 340
0x39, 0x77, // pushi y = 119
0x38, SIG_UINT16(0x0114), // pushi x = 276
0x39, 0x31, // pushi y = 49
0x38, SIG_UINT16(0x00fc), // pushi x = 252
0x39, 0x30, // pushi y = 48
0x38, SIG_UINT16(0x00a5), // pushi x = 165
0x39, 0x55, // pushi y = 85
0x38, SIG_UINT16(0x00c0), // pushi x = 192
0x39, 0x55, // pushi y = 85
0x38, SIG_UINT16(0x010b), // pushi x = 267
0x39, 0x34, // pushi y = 52
0x38, SIG_UINT16(0x0144), // pushi x = 324
0x39, 0x77, // pushi y = 119
SIG_END
};
static const uint16 qg4InnPathfindingPatch[] = {
PATCH_ADDTOOFFSET(+30),
0x38, PATCH_UINT16(0x013f), // pushi x = 319 (was 324)
0x39, 0x77, // pushi y = 119
PATCH_END
};
// script, description, signature patch
static const SciScriptPatcherEntry qfg4Signatures[] = {
{ true, 1, "disable volume reset on startup", 1, sci2VolumeResetSignature, sci2VolumeResetPatch },
{ true, 1, "disable video benchmarking", 1, qfg4BenchmarkSignature, qfg4BenchmarkPatch },
{ true, 83, "fix incorrect array type", 1, qfg4TrapArrayTypeSignature, qfg4TrapArrayTypePatch },
{ true, 320, "fix pathfinding at the inn", 1, qg4InnPathfindingSignature, qg4InnPathfindingPatch },
{ true, 803, "fix sliding down slope", 1, qfg4SlidingDownSlopeSignature, qfg4SlidingDownSlopePatch },
{ true, 64990, "increase number of save games (1/2)", 1, sci2NumSavesSignature1, sci2NumSavesPatch1 },
{ true, 64990, "increase number of save games (2/2)", 1, sci2NumSavesSignature2, sci2NumSavesPatch2 },

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