2 files changed, 161 insertions, 0 deletions

diff --git a/src/weapons/Explosion.cpp b/src/weapons/Explosion.cpp
new file mode 100644
index 00000000..05087335
--- /dev/null
+++ b/src/weapons/Explosion.cpp
@@ -0,0 +1,111 @@
+#include "common.h"
+#include "patcher.h"
+#include "DMAudio.h"
+#include "Explosion.h"
+
+CExplosion(&gaExplosion)[48] = *(CExplosion(*)[48])*(uintptr*)0x64E208;
+
+WRAPPER void CExplosion::AddExplosion(CEntity *explodingEntity, CEntity *culprit, eExplosionType type, const CVector &pos, uint32) { EAXJMP(0x5591C0); }
+//WRAPPER void CExplosion::RemoveAllExplosionsInArea(CVector, float) { EAXJMP(0x55AD40); }
+//WRAPPER bool CExplosion::TestForExplosionInArea(eExplosionType, float, float, float, float, float, float) { EAXJMP(0x55AC80); }
+
+int AudioHandle = AEHANDLE_NONE;
+
+void
+CExplosion::Initialise()
+{
+	debug("Initialising CExplosion...\n");
+	for (int i = 0; i < ARRAY_SIZE(gaExplosion); i++) {
+		gaExplosion[i].m_ExplosionType = EXPLOSION_GRENADE;
+		gaExplosion[i].m_vecPosition.x = 0.0f;
+		gaExplosion[i].m_vecPosition.y = 0.0f;
+		gaExplosion[i].m_vecPosition.z = 0.0f;
+		gaExplosion[i].m_fRadius = 1.0f;
+		gaExplosion[i].m_fPropagationRate = 0.0f;
+		gaExplosion[i].field_38 = 0;
+		gaExplosion[i].m_pCreatorEntity = nil;
+		gaExplosion[i].m_pVictimEntity = nil;
+		gaExplosion[i].m_fStopTime = 0.0f;
+		gaExplosion[i].m_bActive = false;
+		gaExplosion[i].m_nStartTime = 0;
+		gaExplosion[i].field_34 = 0;
+	}
+	AudioHandle = DMAudio.CreateEntity(AUDIOTYPE_EXPLOSION, (void*)1);
+	if (AudioHandle >= 0)
+		DMAudio.SetEntityStatus(AudioHandle, 1);
+	debug("CExplosion ready\n");
+}
+
+void CExplosion::Shutdown()
+{
+	debug("Shutting down CExplosion...\n");
+	if (AudioHandle >= 0) {
+		DMAudio.DestroyEntity(AudioHandle);
+		AudioHandle = AEHANDLE_NONE;
+	}
+	debug("CExplosion shut down\n");
+}
+
+void
+CExplosion::RemoveAllExplosionsInArea(CVector pos, float radius)
+{
+	for (int i = 0; i < ARRAY_SIZE(gaExplosion); i++) {
+		if (gaExplosion[i].m_bActive) {
+			if ((pos - gaExplosion[i].m_vecPosition).MagnitudeSqr() < SQR(radius))
+				gaExplosion[i].m_bActive = false;
+		}
+	}
+}
+
+int8
+CExplosion::GetExplosionActiveCounter(uint8 id)
+{
+	return gaExplosion[id].m_bActiveCounter;
+}
+
+CVector *
+CExplosion::GetExplosionPosition(uint8 id)
+{
+	return &gaExplosion[id].m_vecPosition;
+}
+
+uint8
+CExplosion::GetExplosionType(uint8 id)
+{
+	return gaExplosion[id].m_ExplosionType;
+}
+
+void
+CExplosion::ResetExplosionActiveCounter(uint8 id)
+{
+	gaExplosion[id].m_bActiveCounter = 0;
+}
+
+bool
+CExplosion::TestForExplosionInArea(eExplosionType a1, float x1, float x2, float y1, float y2, float z1, float z2)
+{
+	for (int i = 0; i < ARRAY_SIZE(gaExplosion); i++) {
+		if (gaExplosion[i].m_bActive) {
+			if (a1 == gaExplosion[i].m_ExplosionType) {
+				if (gaExplosion[i].m_vecPosition.x >= x1 && gaExplosion[i].m_vecPosition.x <= x2) {
+					if (gaExplosion[i].m_vecPosition.y >= y1 && gaExplosion[i].m_vecPosition.y <= y2) {
+						if (gaExplosion[i].m_vecPosition.z >= z1 && gaExplosion[i].m_vecPosition.z <= z2)
+							return true;
+					}
+				}
+			}
+		}
+	}
+	return false;
+}
+
+STARTPATCHES
+	InjectHook(0x559030, &CExplosion::Initialise, PATCH_JUMP);
+	InjectHook(0x559100, &CExplosion::Shutdown, PATCH_JUMP);
+	InjectHook(0x55AD40, &CExplosion::RemoveAllExplosionsInArea, PATCH_JUMP);
+	InjectHook(0x559140, &CExplosion::GetExplosionActiveCounter, PATCH_JUMP);
+	InjectHook(0x5591A0, &CExplosion::GetExplosionPosition, PATCH_JUMP);
+	InjectHook(0x559180, &CExplosion::GetExplosionType, PATCH_JUMP);
+	InjectHook(0x559160, &CExplosion::ResetExplosionActiveCounter, PATCH_JUMP);
+	InjectHook(0x55AC80, &CExplosion::TestForExplosionInArea, PATCH_JUMP);
+ENDPATCHES
\ No newline at end of file
diff --git a/src/weapons/Explosion.h b/src/weapons/Explosion.h
new file mode 100644
index 00000000..e6ef9496
--- /dev/null
+++ b/src/weapons/Explosion.h
@@ -0,0 +1,50 @@
+#pragma once
+
+class CEntity;
+class CVector;
+
+enum eExplosionType
+{
+	EXPLOSION_GRENADE,
+	EXPLOSION_MOLOTOV,
+	EXPLOSION_ROCKET,
+	EXPLOSION_CAR,
+	EXPLOSION_CAR_QUICK,
+	EXPLOSION_HELI,
+	EXPLOSION_MINE,
+	EXPLOSION_BARREL,
+	EXPLOSION_TANK_GRENADE,
+	EXPLOSION_HELI_BOMB
+};
+
+class CExplosion
+{
+	eExplosionType m_ExplosionType;
+	CVector m_vecPosition;
+	float m_fRadius;
+	float m_fPropagationRate;
+	CEntity *m_pCreatorEntity;
+	CEntity *m_pVictimEntity;
+	float m_fStopTime;
+	bool m_bActive;
+	int8 m_bActiveCounter;
+	int32 m_nStartTime;
+	uint32 m_nParticlesExpireTime;
+	float m_fPower;
+	int32 field_34;
+	int32 field_38;
+public:
+	static void Initialise();
+	static void Shutdown();
+	static void AddExplosion(CEntity *explodingEntity, CEntity *culprit, eExplosionType type,
+	                         const CVector &pos, uint32);
+
+	static int8 GetExplosionActiveCounter(uint8 id);
+	static CVector *GetExplosionPosition(uint8 id);
+	static uint8 GetExplosionType(uint8 id);
+	static void ResetExplosionActiveCounter(uint8 id);
+	static void RemoveAllExplosionsInArea(CVector, float);
+	static bool TestForExplosionInArea(eExplosionType, float, float, float, float, float, float);
+};
+
+extern CExplosion (&gaExplosion)[48];
\ No newline at end of file