1 files changed, 150 insertions, 0 deletions

diff --git a/src/core/SurfaceTable.cpp b/src/core/SurfaceTable.cpp
new file mode 100644
index 00000000..2ba884b1
--- /dev/null
+++ b/src/core/SurfaceTable.cpp
@@ -0,0 +1,150 @@
+#include "common.h"
+#include "patcher.h"
+#include "main.h"
+#include "FileMgr.h"
+#include "Weather.h"
+#include "Collision.h"
+#include "SurfaceTable.h"
+
+float (*CSurfaceTable::ms_aAdhesiveLimitTable)[NUMADHESIVEGROUPS] = (float (*)[NUMADHESIVEGROUPS])0x8E29D4;
+
+void
+CSurfaceTable::Initialise(char *filename)
+{
+	int lineno, fieldno;
+	char *line;
+	char surfname[256];
+	float adhesiveLimit;
+
+	CFileMgr::SetDir("");
+	CFileMgr::LoadFile(filename, work_buff, sizeof(work_buff), "r");
+
+	line = (char*)work_buff;
+	for(lineno = 0; lineno < NUMADHESIVEGROUPS; lineno++){
+		// skip white space and comments
+		while(*line == ' ' || *line == '\t' || *line == '\n' || *line == '\r' || *line == ';'){
+			if(*line == ';'){
+				while(*line != '\n' && *line != '\r')
+					line++;
+			}else
+				line++;
+		}
+
+		sscanf(line, "%s", surfname);
+		// skip what we just read
+		while(!(*line == ' ' || *line == '\t' || *line == ','))
+			line++;
+
+		for(fieldno = 0; fieldno <= lineno; fieldno++){
+			// skip white space
+			while(*line == ' ' || *line == '\t' || *line == ',')
+				line++;
+			adhesiveLimit = 0.0f;
+			if(*line != '-')
+				sscanf(line, "%f", &adhesiveLimit);
+			// skip what we just read
+			while(!(*line == ' ' || *line == '\t' || *line == ',' || *line == '\n'))
+				line++;
+
+			ms_aAdhesiveLimitTable[lineno][fieldno] = adhesiveLimit;
+			ms_aAdhesiveLimitTable[fieldno][lineno] = adhesiveLimit;
+		}
+	}
+}
+
+int
+CSurfaceTable::GetAdhesionGroup(uint8 surfaceType)
+{
+	switch(surfaceType){
+	case SURFACE_0:		return ADHESIVE_ROAD;
+	case SURFACE_1:		return ADHESIVE_ROAD;
+	case SURFACE_2:		return ADHESIVE_LOOSE;
+	case SURFACE_3:		return ADHESIVE_LOOSE;
+	case SURFACE_4:		return ADHESIVE_HARD;
+	case SURFACE_5:		return ADHESIVE_ROAD;
+	case SURFACE_6:		return ADHESIVE_HARD;
+	case SURFACE_7:		return ADHESIVE_HARD;
+	case SURFACE_8:		return ADHESIVE_HARD;
+	case SURFACE_9:		return ADHESIVE_HARD;
+	case SURFACE_10:	return ADHESIVE_HARD;
+	case SURFACE_11:	return ADHESIVE_HARD;
+	case SURFACE_12:	return ADHESIVE_HARD;
+	case SURFACE_13:	return ADHESIVE_HARD;
+	case SURFACE_14:	return ADHESIVE_HARD;
+	case SURFACE_15:	return ADHESIVE_HARD;
+	case SURFACE_16:	return ADHESIVE_HARD;
+	case SURFACE_17:	return ADHESIVE_RUBBER;
+	case SURFACE_18:	return ADHESIVE_LOOSE;
+	case SURFACE_19:	return ADHESIVE_WET;
+	case SURFACE_20:	return ADHESIVE_ROAD;
+	case SURFACE_21:	return ADHESIVE_ROAD;
+	case SURFACE_22:	return ADHESIVE_ROAD;
+	case SURFACE_23:	return ADHESIVE_RUBBER;
+	case SURFACE_24:	return ADHESIVE_HARD;
+	case SURFACE_25:	return ADHESIVE_LOOSE;
+	case SURFACE_26:	return ADHESIVE_LOOSE;
+	case SURFACE_27:	return ADHESIVE_HARD;
+	case SURFACE_28:	return ADHESIVE_HARD;
+	case SURFACE_29:	return ADHESIVE_RUBBER;
+	case SURFACE_30:	return ADHESIVE_LOOSE;
+	case SURFACE_31:	return ADHESIVE_HARD;
+	case SURFACE_32:	return ADHESIVE_HARD;
+	default:		return ADHESIVE_ROAD;
+	}
+}
+
+float
+CSurfaceTable::GetWetMultiplier(uint8 surfaceType)
+{
+	switch(surfaceType){
+	case SURFACE_0:
+	case SURFACE_1:
+	case SURFACE_4:
+	case SURFACE_5:
+	case SURFACE_8:
+	case SURFACE_20:
+	case SURFACE_21:
+	case SURFACE_22:
+	case SURFACE_25:
+	case SURFACE_30:
+	case SURFACE_31:
+		return 1.0f - CWeather::WetRoads*0.25f;
+
+	case SURFACE_2:
+	case SURFACE_6:
+	case SURFACE_7:
+	case SURFACE_9:
+	case SURFACE_10:
+	case SURFACE_11:
+	case SURFACE_12:
+	case SURFACE_13:
+	case SURFACE_14:
+	case SURFACE_15:
+	case SURFACE_16:
+	case SURFACE_17:
+	case SURFACE_23:
+	case SURFACE_24:
+	case SURFACE_26:
+	case SURFACE_27:
+	case SURFACE_28:
+	case SURFACE_29:
+	case SURFACE_32:
+		return 1.0f - CWeather::WetRoads*0.4f;
+
+	default:
+		return 1.0f;
+	}
+}
+
+float
+CSurfaceTable::GetAdhesiveLimit(CColPoint &colpoint)
+{
+	return ms_aAdhesiveLimitTable[GetAdhesionGroup(colpoint.surfaceB)][GetAdhesionGroup(colpoint.surfaceA)];
+}
+
+STARTPATCHES
+	InjectHook(0x4AB8F0, CSurfaceTable::Initialise, PATCH_JUMP);
+	InjectHook(0x4ABA60, CSurfaceTable::GetAdhesionGroup, PATCH_JUMP);
+	InjectHook(0x4ABAA0, CSurfaceTable::GetWetMultiplier, PATCH_JUMP);
+	InjectHook(0x4ABA30, CSurfaceTable::GetAdhesiveLimit, PATCH_JUMP);
+ENDPATCHES