/
EntityComponents.c
1321 lines (1108 loc) · 51.3 KB
/
EntityComponents.c
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#include "EntityComponents.h"
#include "ExtMath.h"
#include "World.h"
#include "Block.h"
#include "Event.h"
#include "Game.h"
#include "Entity.h"
#include "Platform.h"
#include "Camera.h"
#include "Funcs.h"
#include "VertexStructs.h"
#include "Graphics.h"
#include "Physics.h"
#include "Model.h"
#include "Audio.h"
#include "Bitmap.h"
/*########################################################################################################################*
*----------------------------------------------------AnimatedComponent----------------------------------------------------*
*#########################################################################################################################*/
#define ANIM_MAX_ANGLE (110 * MATH_DEG2RAD)
#define ANIM_ARM_MAX (60.0f * MATH_DEG2RAD)
#define ANIM_LEG_MAX (80.0f * MATH_DEG2RAD)
#define ANIM_IDLE_MAX (3.0f * MATH_DEG2RAD)
#define ANIM_IDLE_XPERIOD (2.0f * MATH_PI / 5.0f)
#define ANIM_IDLE_ZPERIOD (2.0f * MATH_PI / 3.5f)
static void AnimatedComp_DoTilt(float* tilt, cc_bool reduce) {
if (reduce) {
(*tilt) *= 0.84f;
} else {
(*tilt) += 0.1f;
}
Math_Clamp(*tilt, 0.0f, 1.0f);
}
static void AnimatedComp_PerpendicularAnim(struct AnimatedComp* anim, float flapSpeed, float idleXRot, float idleZRot, cc_bool left) {
float verAngle = 0.5f + 0.5f * Math_SinF(anim->WalkTime * flapSpeed);
float horAngle = Math_CosF(anim->WalkTime);
float zRot = -idleZRot - verAngle * anim->Swing * ANIM_MAX_ANGLE;
float xRot = idleXRot + horAngle * anim->Swing * ANIM_ARM_MAX * 1.5f;
if (left) {
anim->LeftArmX = xRot; anim->LeftArmZ = zRot;
} else {
anim->RightArmX = xRot; anim->RightArmZ = zRot;
}
}
static void AnimatedComp_CalcHumanAnim(struct AnimatedComp* anim, float idleXRot, float idleZRot) {
AnimatedComp_PerpendicularAnim(anim, 0.23f, idleXRot, idleZRot, true);
AnimatedComp_PerpendicularAnim(anim, 0.28f, idleXRot, idleZRot, false);
anim->RightArmX = -anim->RightArmX; anim->RightArmZ = -anim->RightArmZ;
}
void AnimatedComp_Init(struct AnimatedComp* anim) {
Mem_Set(anim, 0, sizeof(struct AnimatedComp));
anim->BobStrength = 1.0f; anim->BobStrengthO = 1.0f; anim->BobStrengthN = 1.0f;
}
void AnimatedComp_Update(struct Entity* e, Vec3 oldPos, Vec3 newPos, double delta) {
struct AnimatedComp* anim = &e->Anim;
float dx = newPos.X - oldPos.X;
float dz = newPos.Z - oldPos.Z;
float distance = Math_SqrtF(dx * dx + dz * dz);
int i;
float walkDelta;
anim->WalkTimeO = anim->WalkTimeN;
anim->SwingO = anim->SwingN;
if (distance > 0.05f) {
walkDelta = distance * 2 * (float)(20 * delta);
anim->WalkTimeN += walkDelta;
anim->SwingN += (float)delta * 3;
} else {
anim->SwingN -= (float)delta * 3;
}
Math_Clamp(anim->SwingN, 0.0f, 1.0f);
/* TODO: the Tilt code was designed for 60 ticks/second, fix it up for 20 ticks/second */
anim->BobStrengthO = anim->BobStrengthN;
for (i = 0; i < 3; i++) {
AnimatedComp_DoTilt(&anim->BobStrengthN, !Game_ViewBobbing || !e->OnGround);
}
}
void AnimatedComp_GetCurrent(struct Entity* e, float t) {
struct AnimatedComp* anim = &e->Anim;
float idleTime = (float)Game.Time;
float idleXRot = Math_SinF(idleTime * ANIM_IDLE_XPERIOD) * ANIM_IDLE_MAX;
float idleZRot = Math_CosF(idleTime * ANIM_IDLE_ZPERIOD) * ANIM_IDLE_MAX + ANIM_IDLE_MAX;
anim->Swing = Math_Lerp(anim->SwingO, anim->SwingN, t);
anim->WalkTime = Math_Lerp(anim->WalkTimeO, anim->WalkTimeN, t);
anim->BobStrength = Math_Lerp(anim->BobStrengthO, anim->BobStrengthN, t);
anim->LeftArmX = (Math_CosF(anim->WalkTime) * anim->Swing * ANIM_ARM_MAX) - idleXRot;
anim->LeftArmZ = -idleZRot;
anim->LeftLegX = -(Math_CosF(anim->WalkTime) * anim->Swing * ANIM_LEG_MAX);
anim->LeftLegZ = 0;
anim->RightLegX = -anim->LeftLegX; anim->RightLegZ = -anim->LeftLegZ;
anim->RightArmX = -anim->LeftArmX; anim->RightArmZ = -anim->LeftArmZ;
anim->BobbingHor = Math_CosF(anim->WalkTime) * anim->Swing * (2.5f/16.0f);
anim->BobbingVer = Math_AbsF(Math_SinF(anim->WalkTime)) * anim->Swing * (2.5f/16.0f);
anim->BobbingModel = Math_AbsF(Math_CosF(anim->WalkTime)) * anim->Swing * (4.0f/16.0f);
if (e->Model->CalcHumanAnims && !Game_SimpleArmsAnim) {
AnimatedComp_CalcHumanAnim(anim, idleXRot, idleZRot);
}
}
/*########################################################################################################################*
*------------------------------------------------------TiltComponent------------------------------------------------------*
*#########################################################################################################################*/
void TiltComp_Init(struct TiltComp* anim) {
anim->TiltX = 0.0f; anim->TiltY = 0.0f; anim->VelTiltStrength = 1.0f;
anim->VelTiltStrengthO = 1.0f; anim->VelTiltStrengthN = 1.0f;
}
void TiltComp_Update(struct TiltComp* anim, double delta) {
struct LocalPlayer* p = &LocalPlayer_Instance;
int i;
anim->VelTiltStrengthO = anim->VelTiltStrengthN;
/* TODO: the Tilt code was designed for 60 ticks/second, fix it up for 20 ticks/second */
for (i = 0; i < 3; i++) {
AnimatedComp_DoTilt(&anim->VelTiltStrengthN, p->Hacks.Floating);
}
}
void TiltComp_GetCurrent(struct TiltComp* anim, float t) {
struct LocalPlayer* p = &LocalPlayer_Instance;
struct AnimatedComp* pAnim = &p->Base.Anim;
anim->VelTiltStrength = Math_Lerp(anim->VelTiltStrengthO, anim->VelTiltStrengthN, t);
anim->TiltX = Math_CosF(pAnim->WalkTime) * pAnim->Swing * (0.15f * MATH_DEG2RAD);
anim->TiltY = Math_SinF(pAnim->WalkTime) * pAnim->Swing * (0.15f * MATH_DEG2RAD);
}
/*########################################################################################################################*
*-----------------------------------------------------HacksComponent------------------------------------------------------*
*#########################################################################################################################*/
static void HacksComp_SetAll(struct HacksComp* hacks, cc_bool allowed) {
hacks->CanAnyHacks = allowed; hacks->CanFly = allowed;
hacks->CanNoclip = allowed; hacks->CanRespawn = allowed;
hacks->CanSpeed = allowed; hacks->CanPushbackBlocks = allowed;
hacks->CanUseThirdPersonCamera = allowed;
}
void HacksComp_Init(struct HacksComp* hacks) {
Mem_Set(hacks, 0, sizeof(struct HacksComp));
HacksComp_SetAll(hacks, true);
hacks->SpeedMultiplier = 10.0f;
hacks->Enabled = true;
hacks->IsOp = true;
hacks->CanSeeAllNames = true;
hacks->CanDoubleJump = true;
hacks->BaseHorSpeed = 1.0f;
hacks->MaxJumps = 1;
hacks->NoclipSlide = true;
hacks->CanBePushed = true;
String_InitArray(hacks->HacksFlags, hacks->__HacksFlagsBuffer);
}
cc_bool HacksComp_CanJumpHigher(struct HacksComp* hacks) {
return hacks->Enabled && hacks->CanSpeed;
}
static String HacksComp_UNSAFE_FlagValue(const char* flagRaw, struct HacksComp* hacks) {
String* joined = &hacks->HacksFlags;
String flag = String_FromReadonly(flagRaw);
int beg, end;
beg = String_IndexOfString(joined, &flag);
if (beg < 0) return String_Empty;
beg += flag.length;
end = String_IndexOfAt(joined, beg, ' ');
if (end < 0) end = joined->length;
return String_UNSAFE_Substring(joined, beg, end - beg);
}
static float HacksComp_ParseFlagFloat(const char* flagRaw, struct HacksComp* hacks) {
String raw = HacksComp_UNSAFE_FlagValue(flagRaw, hacks);
float value;
if (!raw.length || Game_ClassicMode) return 1.0f;
if (!Convert_ParseFloat(&raw, &value)) return 1.0f;
return value;
}
static int HacksComp_ParseFlagInt(const char* flagRaw, struct HacksComp* hacks) {
String raw = HacksComp_UNSAFE_FlagValue(flagRaw, hacks);
int value;
if (!raw.length || Game_ClassicMode) return 1;
if (!Convert_ParseInt(&raw, &value)) return 1;
return value;
}
static void HacksComp_ParseFlag(struct HacksComp* hacks, const char* incFlag, const char* excFlag, cc_bool* target) {
String include = String_FromReadonly(incFlag);
String exclude = String_FromReadonly(excFlag);
String* joined = &hacks->HacksFlags;
if (String_ContainsString(joined, &include)) {
*target = true;
} else if (String_ContainsString(joined, &exclude)) {
*target = false;
}
}
static void HacksComp_ParseAllFlag(struct HacksComp* hacks, const char* incFlag, const char* excFlag) {
String include = String_FromReadonly(incFlag);
String exclude = String_FromReadonly(excFlag);
String* joined = &hacks->HacksFlags;
if (String_ContainsString(joined, &include)) {
HacksComp_SetAll(hacks, true);
} else if (String_ContainsString(joined, &exclude)) {
HacksComp_SetAll(hacks, false);
}
}
void HacksComp_SetUserType(struct HacksComp* hacks, cc_uint8 value, cc_bool setBlockPerms) {
cc_bool isOp = value >= 100 && value <= 127;
hacks->IsOp = isOp;
if (!setBlockPerms) return;
Blocks.CanPlace[BLOCK_BEDROCK] = isOp;
Blocks.CanDelete[BLOCK_BEDROCK] = isOp;
Blocks.CanPlace[BLOCK_WATER] = isOp;
Blocks.CanPlace[BLOCK_STILL_WATER] = isOp;
Blocks.CanPlace[BLOCK_LAVA] = isOp;
Blocks.CanPlace[BLOCK_STILL_LAVA] = isOp;
}
void HacksComp_RecheckFlags(struct HacksComp* hacks) {
static const String noHaxFlag = String_FromConst("-hax");
/* Can use hacks by default (also case with WoM), no need to check +hax */
cc_bool hax = !String_ContainsString(&hacks->HacksFlags, &noHaxFlag);
HacksComp_SetAll(hacks, hax);
hacks->CanBePushed = true;
HacksComp_ParseFlag(hacks, "+fly", "-fly", &hacks->CanFly);
HacksComp_ParseFlag(hacks, "+noclip", "-noclip", &hacks->CanNoclip);
HacksComp_ParseFlag(hacks, "+speed", "-speed", &hacks->CanSpeed);
HacksComp_ParseFlag(hacks, "+respawn", "-respawn", &hacks->CanRespawn);
HacksComp_ParseFlag(hacks, "+push", "-push", &hacks->CanBePushed);
if (hacks->IsOp) HacksComp_ParseAllFlag(hacks, "+ophax", "-ophax");
hacks->BaseHorSpeed = HacksComp_ParseFlagFloat("horspeed=", hacks);
hacks->MaxJumps = HacksComp_ParseFlagInt("jumps=", hacks);
HacksComp_Update(hacks);
}
void HacksComp_Update(struct HacksComp* hacks) {
if (!hacks->CanFly || !hacks->Enabled) {
hacks->Flying = false; hacks->FlyingDown = false; hacks->FlyingUp = false;
}
if (!hacks->CanNoclip || !hacks->Enabled) {
hacks->Noclip = false;
}
if (!hacks->CanSpeed || !hacks->Enabled) {
hacks->Speeding = false; hacks->HalfSpeeding = false;
}
hacks->CanDoubleJump = hacks->Enabled && hacks->CanSpeed;
hacks->CanSeeAllNames = hacks->CanAnyHacks && hacks->IsOp;
Event_RaiseVoid(&UserEvents.HackPermissionsChanged);
}
/*########################################################################################################################*
*--------------------------------------------------InterpolationComponent-------------------------------------------------*
*#########################################################################################################################*/
static void InterpComp_RemoveOldestRotY(struct InterpComp* interp) {
int i;
for (i = 0; i < Array_Elems(interp->RotYStates); i++) {
interp->RotYStates[i] = interp->RotYStates[i + 1];
}
interp->RotYCount--;
}
static void InterpComp_AddRotY(struct InterpComp* interp, float state) {
if (interp->RotYCount == Array_Elems(interp->RotYStates)) {
InterpComp_RemoveOldestRotY(interp);
}
interp->RotYStates[interp->RotYCount] = state; interp->RotYCount++;
}
static void InterpComp_AdvanceRotY(struct InterpComp* interp) {
interp->PrevRotY = interp->NextRotY;
if (!interp->RotYCount) return;
interp->NextRotY = interp->RotYStates[0];
InterpComp_RemoveOldestRotY(interp);
}
void InterpComp_LerpAngles(struct InterpComp* interp, struct Entity* e, float t) {
struct InterpState* prev = &interp->Prev;
struct InterpState* next = &interp->Next;
e->Pitch = Math_LerpAngle(prev->Pitch, next->Pitch, t);
e->Yaw = Math_LerpAngle(prev->Yaw, next->Yaw, t);
e->RotX = Math_LerpAngle(prev->RotX, next->RotX, t);
e->RotY = Math_LerpAngle(interp->PrevRotY, interp->NextRotY, t);
e->RotZ = Math_LerpAngle(prev->RotZ, next->RotZ, t);
}
static void InterpComp_SetPos(struct InterpState* state, struct LocationUpdate* update) {
if (update->RelativePos) {
Vec3_AddBy(&state->Pos, &update->Pos);
} else {
state->Pos = update->Pos;
}
}
/*########################################################################################################################*
*----------------------------------------------NetworkInterpolationComponent----------------------------------------------*
*#########################################################################################################################*/
static void NetInterpComp_RemoveOldestState(struct NetInterpComp* interp) {
int i;
for (i = 0; i < Array_Elems(interp->States); i++) {
interp->States[i] = interp->States[i + 1];
}
interp->StatesCount--;
}
static void NetInterpComp_AddState(struct NetInterpComp* interp, struct InterpState state) {
if (interp->StatesCount == Array_Elems(interp->States)) {
NetInterpComp_RemoveOldestState(interp);
}
interp->States[interp->StatesCount] = state; interp->StatesCount++;
}
void NetInterpComp_SetLocation(struct NetInterpComp* interp, struct LocationUpdate* update, cc_bool interpolate) {
struct InterpState last = interp->Cur;
struct InterpState* cur = &interp->Cur;
cc_uint8 flags = update->Flags;
if (flags & LOCATIONUPDATE_POS) InterpComp_SetPos(cur, update);
if (flags & LOCATIONUPDATE_ROTX) cur->RotX = update->RotX;
if (flags & LOCATIONUPDATE_ROTZ) cur->RotZ = update->RotZ;
if (flags & LOCATIONUPDATE_PITCH) cur->Pitch = update->Pitch;
if (flags & LOCATIONUPDATE_YAW) cur->Yaw = update->Yaw;
if (!interpolate) {
interp->Prev = *cur; interp->PrevRotY = cur->Yaw;
interp->Next = *cur; interp->NextRotY = cur->Yaw;
interp->RotYCount = 0; interp->StatesCount = 0;
} else {
/* Smoother interpolation by also adding midpoint. */
struct InterpState mid;
Vec3_Lerp(&mid.Pos, &last.Pos, &cur->Pos, 0.5f);
mid.RotX = Math_LerpAngle(last.RotX, cur->RotX, 0.5f);
mid.RotZ = Math_LerpAngle(last.RotZ, cur->RotZ, 0.5f);
mid.Pitch = Math_LerpAngle(last.Pitch, cur->Pitch, 0.5f);
mid.Yaw = Math_LerpAngle(last.Yaw, cur->Yaw, 0.5f);
NetInterpComp_AddState(interp, mid);
NetInterpComp_AddState(interp, *cur);
/* Body rotation lags behind head a tiny bit */
InterpComp_AddRotY((struct InterpComp*)interp, Math_LerpAngle(last.Yaw, cur->Yaw, 0.33333333f));
InterpComp_AddRotY((struct InterpComp*)interp, Math_LerpAngle(last.Yaw, cur->Yaw, 0.66666667f));
InterpComp_AddRotY((struct InterpComp*)interp, Math_LerpAngle(last.Yaw, cur->Yaw, 1.00000000f));
}
}
void NetInterpComp_AdvanceState(struct NetInterpComp* interp) {
interp->Prev = interp->Next;
if (interp->StatesCount > 0) {
interp->Next = interp->States[0];
NetInterpComp_RemoveOldestState(interp);
}
InterpComp_AdvanceRotY((struct InterpComp*)interp);
}
/*########################################################################################################################*
*-----------------------------------------------LocalInterpolationComponent-----------------------------------------------*
*#########################################################################################################################*/
static void LocalInterpComp_Angle(float* prev, float* next, float value, cc_bool interpolate) {
*next = value;
if (!interpolate) *prev = value;
}
void LocalInterpComp_SetLocation(struct InterpComp* interp, struct LocationUpdate* update, cc_bool interpolate) {
struct Entity* entity = &LocalPlayer_Instance.Base;
struct InterpState* prev = &interp->Prev;
struct InterpState* next = &interp->Next;
cc_uint8 flags = update->Flags;
float yOffset;
if (flags & LOCATIONUPDATE_POS) {
InterpComp_SetPos(next, update);
/* If server sets Y position exactly on ground, push up a tiny bit */
yOffset = next->Pos.Y - Math_Floor(next->Pos.Y);
if (yOffset < ENTITY_ADJUSTMENT) next->Pos.Y += ENTITY_ADJUSTMENT;
if (!interpolate) { prev->Pos = next->Pos; entity->Position = next->Pos; }
}
if (flags & LOCATIONUPDATE_PITCH) {
LocalInterpComp_Angle(&prev->Pitch, &next->Pitch, update->Pitch, interpolate);
}
if (flags & LOCATIONUPDATE_YAW) {
LocalInterpComp_Angle(&prev->Yaw, &next->Yaw, update->Yaw, interpolate);
}
if (flags & LOCATIONUPDATE_ROTX) {
LocalInterpComp_Angle(&prev->RotX, &next->RotX, update->RotX, interpolate);
}
if (flags & LOCATIONUPDATE_ROTZ) {
LocalInterpComp_Angle(&prev->RotZ, &next->RotZ, update->RotZ, interpolate);
}
if (flags & LOCATIONUPDATE_YAW) {
if (!interpolate) {
interp->NextRotY = update->Yaw;
entity->RotY = update->Yaw;
interp->RotYCount = 0;
} else {
/* Body Y rotation lags slightly behind */
InterpComp_AddRotY(interp, Math_LerpAngle(prev->Yaw, next->Yaw, 0.33333333f));
InterpComp_AddRotY(interp, Math_LerpAngle(prev->Yaw, next->Yaw, 0.66666667f));
InterpComp_AddRotY(interp, Math_LerpAngle(prev->Yaw, next->Yaw, 1.00000000f));
interp->NextRotY = interp->RotYStates[0];
}
}
InterpComp_LerpAngles(interp, entity, 0.0f);
}
void LocalInterpComp_AdvanceState(struct InterpComp* interp) {
struct Entity* p = &LocalPlayer_Instance.Base;
interp->Prev = interp->Next;
p->Position = interp->Next.Pos;
InterpComp_AdvanceRotY(interp);
}
/*########################################################################################################################*
*-----------------------------------------------------ShadowComponent-----------------------------------------------------*
*#########################################################################################################################*/
cc_bool ShadowComponent_BoundShadowTex;
GfxResourceID ShadowComponent_ShadowTex;
static float shadow_radius, shadow_uvScale;
struct ShadowData { float Y; BlockID Block; cc_uint8 A; };
static cc_bool lequal(float a, float b) { return a < b || Math_AbsF(a - b) < 0.001f; }
static void ShadowComponent_DrawCoords(VertexP3fT2fC4b** vertices, struct Entity* e, struct ShadowData* data, float x1, float z1, float x2, float z2) {
PackedCol col;
VertexP3fT2fC4b* v;
Vec3 cen;
float u1, v1, u2, v2;
if (lequal(x2, x1) || lequal(z2, z1)) return;
cen = e->Position;
u1 = (x1 - cen.X) * shadow_uvScale + 0.5f;
v1 = (z1 - cen.Z) * shadow_uvScale + 0.5f;
u2 = (x2 - cen.X) * shadow_uvScale + 0.5f;
v2 = (z2 - cen.Z) * shadow_uvScale + 0.5f;
if (u2 <= 0.0f || v2 <= 0.0f || u1 >= 1.0f || v1 >= 1.0f) return;
x1 = max(x1, cen.X - shadow_radius); u1 = u1 >= 0.0f ? u1 : 0.0f;
z1 = max(z1, cen.Z - shadow_radius); v1 = v1 >= 0.0f ? v1 : 0.0f;
x2 = min(x2, cen.X + shadow_radius); u2 = u2 <= 1.0f ? u2 : 1.0f;
z2 = min(z2, cen.Z + shadow_radius); v2 = v2 <= 1.0f ? v2 : 1.0f;
v = *vertices;
col = PackedCol_Make(255, 255, 255, data->A);
v->X = x1; v->Y = data->Y; v->Z = z1; v->Col = col; v->U = u1; v->V = v1; v++;
v->X = x2; v->Y = data->Y; v->Z = z1; v->Col = col; v->U = u2; v->V = v1; v++;
v->X = x2; v->Y = data->Y; v->Z = z2; v->Col = col; v->U = u2; v->V = v2; v++;
v->X = x1; v->Y = data->Y; v->Z = z2; v->Col = col; v->U = u1; v->V = v2; v++;
*vertices = v;
}
static void ShadowComponent_DrawSquareShadow(VertexP3fT2fC4b** vertices, float y, float x, float z) {
PackedCol col = PackedCol_Make(255, 255, 255, 220);
float uv1 = 63/128.0f, uv2 = 64/128.0f;
VertexP3fT2fC4b* v = *vertices;
v->X = x; v->Y = y; v->Z = z; v->Col = col; v->U = uv1; v->V = uv1; v++;
v->X = x + 1; v->Y = y; v->Z = z; v->Col = col; v->U = uv2; v->V = uv1; v++;
v->X = x + 1; v->Y = y; v->Z = z + 1; v->Col = col; v->U = uv2; v->V = uv2; v++;
v->X = x; v->Y = y; v->Z = z + 1; v->Col = col; v->U = uv1; v->V = uv2; v++;
*vertices = v;
}
/* Shadow may extend down multiple blocks vertically */
/* If so, shadow on a block must be 'chopped up' to avoid a shadow underneath block above this one */
static void ShadowComponent_DrawCircle(VertexP3fT2fC4b** vertices, struct Entity* e, struct ShadowData* data, float x, float z) {
Vec3 min, max, nMin, nMax;
int i;
x = (float)Math_Floor(x); z = (float)Math_Floor(z);
min = Blocks.MinBB[data[0].Block]; max = Blocks.MaxBB[data[0].Block];
ShadowComponent_DrawCoords(vertices, e, &data[0], x + min.X, z + min.Z, x + max.X, z + max.Z);
for (i = 1; i < 4; i++) {
if (data[i].Block == BLOCK_AIR) return;
nMin = Blocks.MinBB[data[i].Block]; nMax = Blocks.MaxBB[data[i].Block];
ShadowComponent_DrawCoords(vertices, e, &data[i], x + min.X, z + nMin.Z, x + max.X, z + min.Z);
ShadowComponent_DrawCoords(vertices, e, &data[i], x + min.X, z + max.Z, x + max.X, z + nMax.Z);
ShadowComponent_DrawCoords(vertices, e, &data[i], x + nMin.X, z + nMin.Z, x + min.X, z + nMax.Z);
ShadowComponent_DrawCoords(vertices, e, &data[i], x + max.X, z + nMin.Z, x + nMax.X, z + nMax.Z);
min = nMin; max = nMax;
}
}
static void ShadowComponent_CalcAlpha(float playerY, struct ShadowData* data) {
float height = playerY - data->Y;
if (height <= 6.0f) {
data->A = (cc_uint8)(160 - 160 * height / 6.0f);
data->Y += 1.0f / 64.0f; return;
}
data->A = 0;
if (height <= 16.0f) data->Y += 1.0f / 64.0f;
else if (height <= 32.0f) data->Y += 1.0f / 16.0f;
else if (height <= 96.0f) data->Y += 1.0f / 8.0f;
else data->Y += 1.0f / 4.0f;
}
static cc_bool ShadowComponent_GetBlocks(struct Entity* e, int x, int y, int z, struct ShadowData* data) {
struct ShadowData zeroData = { 0 };
struct ShadowData* cur;
float posY, topY;
cc_bool outside;
BlockID block; cc_uint8 draw;
int i;
for (i = 0; i < 4; i++) { data[i] = zeroData; }
cur = data;
posY = e->Position.Y;
outside = !World_ContainsXZ(x, z);
for (i = 0; y >= 0 && i < 4; y--) {
if (!outside) {
block = World_GetBlock(x, y, z);
} else if (y == Env.EdgeHeight - 1) {
block = Blocks.Draw[Env.EdgeBlock] == DRAW_GAS ? BLOCK_AIR : BLOCK_BEDROCK;
} else if (y == Env_SidesHeight - 1) {
block = Blocks.Draw[Env.SidesBlock] == DRAW_GAS ? BLOCK_AIR : BLOCK_BEDROCK;
} else {
block = BLOCK_AIR;
}
draw = Blocks.Draw[block];
if (draw == DRAW_GAS || draw == DRAW_SPRITE || Blocks.IsLiquid[block]) continue;
topY = y + Blocks.MaxBB[block].Y;
if (topY >= posY + 0.01f) continue;
cur->Block = block; cur->Y = topY;
ShadowComponent_CalcAlpha(posY, cur);
i++; cur++;
/* Check if the casted shadow will continue on further down. */
if (Blocks.MinBB[block].X == 0.0f && Blocks.MaxBB[block].X == 1.0f &&
Blocks.MinBB[block].Z == 0.0f && Blocks.MaxBB[block].Z == 1.0f) return true;
}
if (i < 4) {
cur->Block = Env.EdgeBlock; cur->Y = 0.0f;
ShadowComponent_CalcAlpha(posY, cur);
i++; cur++;
}
return true;
}
#define sh_size 128
#define sh_half (sh_size / 2)
static void ShadowComponent_MakeTex(void) {
cc_uint8 pixels[Bitmap_DataSize(sh_size, sh_size)];
BitmapCol col = BitmapCol_Make(0, 0, 0, 200);
Bitmap bmp;
cc_uint32 x, y;
Bitmap_Init(bmp, sh_size, sh_size, pixels);
for (y = 0; y < sh_size; y++) {
BitmapCol* row = Bitmap_GetRow(&bmp, y);
for (x = 0; x < sh_size; x++) {
double dist =
(sh_half - (x + 0.5)) * (sh_half - (x + 0.5)) +
(sh_half - (y + 0.5)) * (sh_half - (y + 0.5));
row[x] = dist < sh_half * sh_half ? col : 0;
}
}
ShadowComponent_ShadowTex = Gfx_CreateTexture(&bmp, false, false);
}
void ShadowComponent_Draw(struct Entity* e) {
VertexP3fT2fC4b vertices[128];
VertexP3fT2fC4b* ptr;
struct ShadowData data[4];
GfxResourceID vb;
Vec3 pos;
float radius;
int y, count;
int x1, z1, x2, z2;
pos = e->Position;
if (pos.Y < 0.0f) return;
y = min((int)pos.Y, World.MaxY);
radius = 7.0f * min(e->ModelScale.Y, 1.0f) * e->Model->ShadowScale;
shadow_radius = radius / 16.0f;
shadow_uvScale = 16.0f / (radius * 2.0f);
/* TODO: Should shadow component use its own VB? */
ptr = vertices;
if (Entities.ShadowsMode == SHADOW_MODE_SNAP_TO_BLOCK) {
vb = Gfx_texVb;
x1 = Math_Floor(pos.X); z1 = Math_Floor(pos.Z);
if (!ShadowComponent_GetBlocks(e, x1, y, z1, data)) return;
ShadowComponent_DrawSquareShadow(&ptr, data[0].Y, x1, z1);
} else {
vb = Models.Vb;
x1 = Math_Floor(pos.X - shadow_radius); z1 = Math_Floor(pos.Z - shadow_radius);
x2 = Math_Floor(pos.X + shadow_radius); z2 = Math_Floor(pos.Z + shadow_radius);
if (ShadowComponent_GetBlocks(e, x1, y, z1, data) && data[0].A > 0) {
ShadowComponent_DrawCircle(&ptr, e, data, (float)x1, (float)z1);
}
if (x1 != x2 && ShadowComponent_GetBlocks(e, x2, y, z1, data) && data[0].A > 0) {
ShadowComponent_DrawCircle(&ptr, e, data, (float)x2, (float)z1);
}
if (z1 != z2 && ShadowComponent_GetBlocks(e, x1, y, z2, data) && data[0].A > 0) {
ShadowComponent_DrawCircle(&ptr, e, data, (float)x1, (float)z2);
}
if (x1 != x2 && z1 != z2 && ShadowComponent_GetBlocks(e, x2, y, z2, data) && data[0].A > 0) {
ShadowComponent_DrawCircle(&ptr, e, data, (float)x2, (float)z2);
}
}
if (ptr == vertices) return;
if (!ShadowComponent_ShadowTex) ShadowComponent_MakeTex();
if (!ShadowComponent_BoundShadowTex) {
Gfx_BindTexture(ShadowComponent_ShadowTex);
ShadowComponent_BoundShadowTex = true;
}
count = (int)(ptr - vertices);
Gfx_UpdateDynamicVb_IndexedTris(vb, vertices, count);
}
/*########################################################################################################################*
*---------------------------------------------------CollisionsComponent---------------------------------------------------*
*#########################################################################################################################*/
/* Whether a collision occurred with any horizontal sides of any blocks */
cc_bool Collisions_HitHorizontal(struct CollisionsComp* comp) {
return comp->HitXMin || comp->HitXMax || comp->HitZMin || comp->HitZMax;
}
#define COLLISIONS_ADJ 0.001f
static void Collisions_ClipX(struct Entity* e, Vec3* size, struct AABB* entityBB, struct AABB* extentBB) {
e->Velocity.X = 0.0f;
entityBB->Min.X = e->Position.X - size->X / 2; extentBB->Min.X = entityBB->Min.X;
entityBB->Max.X = e->Position.X + size->X / 2; extentBB->Max.X = entityBB->Max.X;
}
static void Collisions_ClipY(struct Entity* e, Vec3* size, struct AABB* entityBB, struct AABB* extentBB) {
e->Velocity.Y = 0.0f;
entityBB->Min.Y = e->Position.Y; extentBB->Min.Y = entityBB->Min.Y;
entityBB->Max.Y = e->Position.Y + size->Y; extentBB->Max.Y = entityBB->Max.Y;
}
static void Collisions_ClipZ(struct Entity* e, Vec3* size, struct AABB* entityBB, struct AABB* extentBB) {
e->Velocity.Z = 0.0f;
entityBB->Min.Z = e->Position.Z - size->Z / 2; extentBB->Min.Z = entityBB->Min.Z;
entityBB->Max.Z = e->Position.Z + size->Z / 2; extentBB->Max.Z = entityBB->Max.Z;
}
static cc_bool Collisions_CanSlideThrough(struct AABB* adjFinalBB) {
IVec3 bbMin, bbMax;
struct AABB blockBB;
BlockID block;
Vec3 v;
int x, y, z;
IVec3_Floor(&bbMin, &adjFinalBB->Min);
IVec3_Floor(&bbMax, &adjFinalBB->Max);
for (y = bbMin.Y; y <= bbMax.Y; y++) { v.Y = (float)y;
for (z = bbMin.Z; z <= bbMax.Z; z++) { v.Z = (float)z;
for (x = bbMin.X; x <= bbMax.X; x++) { v.X = (float)x;
block = World_GetPhysicsBlock(x, y, z);
Vec3_Add(&blockBB.Min, &v, &Blocks.MinBB[block]);
Vec3_Add(&blockBB.Max, &v, &Blocks.MaxBB[block]);
if (!AABB_Intersects(&blockBB, adjFinalBB)) continue;
if (Blocks.Collide[block] == COLLIDE_SOLID) return false;
}
}
}
return true;
}
static cc_bool Collisions_DidSlide(struct CollisionsComp* comp, struct AABB* blockBB, Vec3* size,
struct AABB* finalBB, struct AABB* entityBB, struct AABB* extentBB) {
float yDist = blockBB->Max.Y - entityBB->Min.Y;
struct AABB adjBB;
if (yDist > 0.0f && yDist <= comp->Entity->StepSize + 0.01f) {
float blockBB_MinX = max(blockBB->Min.X, blockBB->Max.X - size->X / 2);
float blockBB_MaxX = min(blockBB->Max.X, blockBB->Min.X + size->X / 2);
float blockBB_MinZ = max(blockBB->Min.Z, blockBB->Max.Z - size->Z / 2);
float blockBB_MaxZ = min(blockBB->Max.Z, blockBB->Min.Z + size->Z / 2);
adjBB.Min.X = min(finalBB->Min.X, blockBB_MinX + COLLISIONS_ADJ);
adjBB.Max.X = max(finalBB->Max.X, blockBB_MaxX - COLLISIONS_ADJ);
adjBB.Min.Y = blockBB->Max.Y + COLLISIONS_ADJ;
adjBB.Max.Y = adjBB.Min.Y + size->Y;
adjBB.Min.Z = min(finalBB->Min.Z, blockBB_MinZ + COLLISIONS_ADJ);
adjBB.Max.Z = max(finalBB->Max.Z, blockBB_MaxZ - COLLISIONS_ADJ);
if (!Collisions_CanSlideThrough(&adjBB)) return false;
comp->Entity->Position.Y = adjBB.Min.Y;
comp->Entity->OnGround = true;
Collisions_ClipY(comp->Entity, size, entityBB, extentBB);
return true;
}
return false;
}
static void Collisions_ClipXMin(struct CollisionsComp* comp, struct AABB* blockBB, struct AABB* entityBB,
cc_bool wasOn, struct AABB* finalBB, struct AABB* extentBB, Vec3* size) {
if (!wasOn || !Collisions_DidSlide(comp, blockBB, size, finalBB, entityBB, extentBB)) {
comp->Entity->Position.X = blockBB->Min.X - size->X / 2 - COLLISIONS_ADJ;
Collisions_ClipX(comp->Entity, size, entityBB, extentBB);
comp->HitXMin = true;
}
}
static void Collisions_ClipXMax(struct CollisionsComp* comp, struct AABB* blockBB, struct AABB* entityBB,
cc_bool wasOn, struct AABB* finalBB, struct AABB* extentBB, Vec3* size) {
if (!wasOn || !Collisions_DidSlide(comp, blockBB, size, finalBB, entityBB, extentBB)) {
comp->Entity->Position.X = blockBB->Max.X + size->X / 2 + COLLISIONS_ADJ;
Collisions_ClipX(comp->Entity, size, entityBB, extentBB);
comp->HitXMax = true;
}
}
static void Collisions_ClipZMax(struct CollisionsComp* comp, struct AABB* blockBB, struct AABB* entityBB,
cc_bool wasOn, struct AABB* finalBB, struct AABB* extentBB, Vec3* size) {
if (!wasOn || !Collisions_DidSlide(comp, blockBB, size, finalBB, entityBB, extentBB)) {
comp->Entity->Position.Z = blockBB->Max.Z + size->Z / 2 + COLLISIONS_ADJ;
Collisions_ClipZ(comp->Entity, size, entityBB, extentBB);
comp->HitZMax = true;
}
}
static void Collisions_ClipZMin(struct CollisionsComp* comp, struct AABB* blockBB, struct AABB* entityBB,
cc_bool wasOn, struct AABB* finalBB, struct AABB* extentBB, Vec3* size) {
if (!wasOn || !Collisions_DidSlide(comp, blockBB, size, finalBB, entityBB, extentBB)) {
comp->Entity->Position.Z = blockBB->Min.Z - size->Z / 2 - COLLISIONS_ADJ;
Collisions_ClipZ(comp->Entity, size, entityBB, extentBB);
comp->HitZMin = true;
}
}
static void Collisions_ClipYMin(struct CollisionsComp* comp, struct AABB* blockBB, struct AABB* entityBB,
struct AABB* extentBB, Vec3* size) {
comp->Entity->Position.Y = blockBB->Min.Y - size->Y - COLLISIONS_ADJ;
Collisions_ClipY(comp->Entity, size, entityBB, extentBB);
comp->HitYMin = true;
}
static void Collisions_ClipYMax(struct CollisionsComp* comp, struct AABB* blockBB, struct AABB* entityBB,
struct AABB* extentBB, Vec3* size) {
comp->Entity->Position.Y = blockBB->Max.Y + COLLISIONS_ADJ;
comp->Entity->OnGround = true;
Collisions_ClipY(comp->Entity, size, entityBB, extentBB);
comp->HitYMax = true;
}
static void Collisions_CollideWithReachableBlocks(struct CollisionsComp* comp, int count, struct AABB* entityBB,
struct AABB* extentBB) {
struct Entity* entity = comp->Entity;
struct SearcherState state;
struct AABB blockBB, finalBB;
Vec3 size;
cc_bool wasOn;
Vec3 bPos, v;
float tx, ty, tz;
int i, block;
/* Reset collision detection states */
wasOn = entity->OnGround;
entity->OnGround = false;
comp->HitXMin = false; comp->HitYMin = false; comp->HitZMin = false;
comp->HitXMax = false; comp->HitYMax = false; comp->HitZMax = false;
size = entity->Size;
for (i = 0; i < count; i++) {
/* Unpack the block and coordinate data */
state = Searcher_States[i];
bPos.X = state.X >> 3; bPos.Y = state.Y >> 4; bPos.Z = state.Z >> 3;
block = (state.X & 0x7) | (state.Y & 0xF) << 3 | (state.Z & 0x7) << 7;
Vec3_Add(&blockBB.Min, &Blocks.MinBB[block], &bPos);
Vec3_Add(&blockBB.Max, &Blocks.MaxBB[block], &bPos);
if (!AABB_Intersects(extentBB, &blockBB)) continue;
/* Recheck time to collide with block (as colliding with blocks modifies this) */
Searcher_CalcTime(&entity->Velocity, entityBB, &blockBB, &tx, &ty, &tz);
if (tx > 1.0f || ty > 1.0f || tz > 1.0f) {
Platform_LogConst("t > 1 in physics calculation.. this shouldn't have happened.");
}
/* Calculate the location of the entity when it collides with this block */
v = entity->Velocity;
v.X *= tx; v.Y *= ty; v.Z *= tz;
/* Inlined ABBB_Offset */
Vec3_Add(&finalBB.Min, &entityBB->Min, &v);
Vec3_Add(&finalBB.Max, &entityBB->Max, &v);
/* if we have hit the bottom of a block, we need to change the axis we test first */
if (!comp->HitYMin) {
if (finalBB.Min.Y + COLLISIONS_ADJ >= blockBB.Max.Y) {
Collisions_ClipYMax(comp, &blockBB, entityBB, extentBB, &size);
} else if (finalBB.Max.Y - COLLISIONS_ADJ <= blockBB.Min.Y) {
Collisions_ClipYMin(comp, &blockBB, entityBB, extentBB, &size);
} else if (finalBB.Min.X + COLLISIONS_ADJ >= blockBB.Max.X) {
Collisions_ClipXMax(comp, &blockBB, entityBB, wasOn, &finalBB, extentBB, &size);
} else if (finalBB.Max.X - COLLISIONS_ADJ <= blockBB.Min.X) {
Collisions_ClipXMin(comp, &blockBB, entityBB, wasOn, &finalBB, extentBB, &size);
} else if (finalBB.Min.Z + COLLISIONS_ADJ >= blockBB.Max.Z) {
Collisions_ClipZMax(comp, &blockBB, entityBB, wasOn, &finalBB, extentBB, &size);
} else if (finalBB.Max.Z - COLLISIONS_ADJ <= blockBB.Min.Z) {
Collisions_ClipZMin(comp, &blockBB, entityBB, wasOn, &finalBB, extentBB, &size);
}
continue;
}
/* if flying or falling, test the horizontal axes first */
if (finalBB.Min.X + COLLISIONS_ADJ >= blockBB.Max.X) {
Collisions_ClipXMax(comp, &blockBB, entityBB, wasOn, &finalBB, extentBB, &size);
} else if (finalBB.Max.X - COLLISIONS_ADJ <= blockBB.Min.X) {
Collisions_ClipXMin(comp, &blockBB, entityBB, wasOn, &finalBB, extentBB, &size);
} else if (finalBB.Min.Z + COLLISIONS_ADJ >= blockBB.Max.Z) {
Collisions_ClipZMax(comp, &blockBB, entityBB, wasOn, &finalBB, extentBB, &size);
} else if (finalBB.Max.Z - COLLISIONS_ADJ <= blockBB.Min.Z) {
Collisions_ClipZMin(comp, &blockBB, entityBB, wasOn, &finalBB, extentBB, &size);
} else if (finalBB.Min.Y + COLLISIONS_ADJ >= blockBB.Max.Y) {
Collisions_ClipYMax(comp, &blockBB, entityBB, extentBB, &size);
} else if (finalBB.Max.Y - COLLISIONS_ADJ <= blockBB.Min.Y) {
Collisions_ClipYMin(comp, &blockBB, entityBB, extentBB, &size);
}
}
}
/* TODO: test for corner cases, and refactor this */
void Collisions_MoveAndWallSlide(struct CollisionsComp* comp) {
struct Entity* e = comp->Entity;
struct AABB entityBB, entityExtentBB;
int count;
if (Vec3_IsZero(e->Velocity)) return;
count = Searcher_FindReachableBlocks(e, &entityBB, &entityExtentBB);
Collisions_CollideWithReachableBlocks(comp, count, &entityBB, &entityExtentBB);
}
/*########################################################################################################################*
*----------------------------------------------------PhysicsComponent-----------------------------------------------------*
*#########################################################################################################################*/
void PhysicsComp_Init(struct PhysicsComp* comp, struct Entity* entity) {
Mem_Set(comp, 0, sizeof(struct PhysicsComp));
comp->CanLiquidJump = true;
comp->Entity = entity;
comp->JumpVel = 0.42f;
comp->UserJumpVel = 0.42f;
comp->ServerJumpVel = 0.42f;
}
static cc_bool PhysicsComp_TouchesLiquid(BlockID block) { return Blocks.Collide[block] == COLLIDE_LIQUID; }
void PhysicsComp_UpdateVelocityState(struct PhysicsComp* comp) {
struct Entity* entity = comp->Entity;
struct HacksComp* hacks = comp->Hacks;
struct AABB bounds;
int dir;
cc_bool touchWater, touchLava;
cc_bool liquidFeet, liquidRest;
int feetY, bodyY, headY;
cc_bool pastJumpPoint;
if (hacks->Floating) {
entity->Velocity.Y = 0.0f; /* eliminate the effect of gravity */
dir = (hacks->FlyingUp || comp->Jumping) ? 1 : (hacks->FlyingDown ? -1 : 0);
entity->Velocity.Y += 0.12f * dir;
if (hacks->Speeding && hacks->CanSpeed) entity->Velocity.Y += 0.12f * dir;
if (hacks->HalfSpeeding && hacks->CanSpeed) entity->Velocity.Y += 0.06f * dir;
} else if (comp->Jumping && Entity_TouchesAnyRope(entity) && entity->Velocity.Y > 0.02f) {
entity->Velocity.Y = 0.02f;
}
if (!comp->Jumping) { comp->CanLiquidJump = false; return; }
touchWater = Entity_TouchesAnyWater(entity);
touchLava = Entity_TouchesAnyLava(entity);
if (touchWater || touchLava) {
Entity_GetBounds(entity, &bounds);
feetY = Math_Floor(bounds.Min.Y); bodyY = feetY + 1;
headY = Math_Floor(bounds.Max.Y);
if (bodyY > headY) bodyY = headY;
bounds.Max.Y = bounds.Min.Y = feetY;
liquidFeet = Entity_TouchesAny(&bounds, PhysicsComp_TouchesLiquid);
bounds.Min.Y = min(bodyY, headY);
bounds.Max.Y = max(bodyY, headY);
liquidRest = Entity_TouchesAny(&bounds, PhysicsComp_TouchesLiquid);
pastJumpPoint = liquidFeet && !liquidRest && (Math_Mod1(entity->Position.Y) >= 0.4f);
if (!pastJumpPoint) {
comp->CanLiquidJump = true;
entity->Velocity.Y += 0.04f;
if (hacks->Speeding && hacks->CanSpeed) entity->Velocity.Y += 0.04f;
if (hacks->HalfSpeeding && hacks->CanSpeed) entity->Velocity.Y += 0.02f;
} else if (pastJumpPoint) {
/* either A) climb up solid on side B) jump bob in water */
if (Collisions_HitHorizontal(comp->Collisions)) {
entity->Velocity.Y += touchLava ? 0.30f : 0.13f;
} else if (comp->CanLiquidJump) {
entity->Velocity.Y += touchLava ? 0.20f : 0.10f;
}
comp->CanLiquidJump = false;
}
} else if (comp->UseLiquidGravity) {
entity->Velocity.Y += 0.04f;
if (hacks->Speeding && hacks->CanSpeed) entity->Velocity.Y += 0.04f;
if (hacks->HalfSpeeding && hacks->CanSpeed) entity->Velocity.Y += 0.02f;
comp->CanLiquidJump = false;
} else if (Entity_TouchesAnyRope(entity)) {
entity->Velocity.Y += (hacks->Speeding && hacks->CanSpeed) ? 0.15f : 0.10f;
comp->CanLiquidJump = false;
} else if (entity->OnGround) {
PhysicsComp_DoNormalJump(comp);
}
}
void PhysicsComp_DoNormalJump(struct PhysicsComp* comp) {
struct Entity* entity = comp->Entity;
struct HacksComp* hacks = comp->Hacks;
if (comp->JumpVel == 0.0f || hacks->MaxJumps <= 0) return;
entity->Velocity.Y = comp->JumpVel;
if (hacks->Speeding && hacks->CanSpeed) entity->Velocity.Y += comp->JumpVel;
if (hacks->HalfSpeeding && hacks->CanSpeed) entity->Velocity.Y += comp->JumpVel / 2;
comp->CanLiquidJump = false;
}
static cc_bool PhysicsComp_TouchesSlipperyIce(BlockID b) { return Blocks.ExtendedCollide[b] == COLLIDE_SLIPPERY_ICE; }
static cc_bool PhysicsComp_OnIce(struct Entity* e) {
struct AABB bounds;
int feetX, feetY, feetZ;
BlockID feetBlock;
feetX = Math_Floor(e->Position.X);
feetY = Math_Floor(e->Position.Y - 0.01f);
feetZ = Math_Floor(e->Position.Z);
feetBlock = World_GetPhysicsBlock(feetX, feetY, feetZ);
if (Blocks.ExtendedCollide[feetBlock] == COLLIDE_ICE) return true;
Entity_GetBounds(e, &bounds);
bounds.Min.Y -= 0.01f; bounds.Max.Y = bounds.Min.Y;
return Entity_TouchesAny(&bounds, PhysicsComp_TouchesSlipperyIce);
}
static void PhysicsComp_MoveHor(struct PhysicsComp* comp, Vec3 vel, float factor) {
struct Entity* entity;
float dist;
dist = Math_SqrtF(vel.X * vel.X + vel.Z * vel.Z);
if (dist < 0.00001f) return;
if (dist < 1.0f) dist = 1.0f;