add license header

block.go

@@ -1,3 +1,19 @@
+// molecular is a 3D physics engine written in Go
+// Copyright (C) 2023  Kevin Z <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package molecular
 
 type Facing uint8

box.go

@@ -1,3 +1,19 @@
+// molecular is a 3D physics engine written in Go
+// Copyright (C) 2023  Kevin Z <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package molecular
 
 type Cube struct {

box_test.go

@@ -1,3 +1,19 @@
+// molecular is a 3D physics engine written in Go
+// Copyright (C) 2023  Kevin Z <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package molecular_test
 
 import (

conflict.go

@@ -1,3 +1,19 @@
+// molecular is a 3D physics engine written in Go
+// Copyright (C) 2023  Kevin Z <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package molecular
 
 func (e *Engine) appendObjsInsideRange(objs []*Object, pos Vec3, radius float64) []*Object {

engine.go

@@ -1,3 +1,19 @@
+// molecular is a 3D physics engine written in Go
+// Copyright (C) 2023  Kevin Z <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package molecular
 
 import (
@@ -125,7 +141,7 @@ func (e *Engine) ForeachObject(cb func(o *Object)) {
 }
 
 func (e *Engine) ForeachBlock(cb func(b Block)) {
-	e.ForeachObject(func(o *Object){
+	e.ForeachObject(func(o *Object) {
 		for _, b := range o.blocks {
 			cb(b)
 		}
@@ -151,15 +167,19 @@ func (e *Engine) queueEvent(event *eventWave) {
 func (e *Engine) Tick(dt float64) {
 	var wg sync.WaitGroup
 	// tick objects
-	e.tickLocked(&wg, dt)
+	e.tickObjectLocked(&wg, dt)
+	wg.Wait()
+
+	// tick events
+	e.tickEventLocked(&wg, dt)
 	wg.Wait()
 
-	// save object status
-	e.saveStatusLocked(&wg)
+	// sync object status
+	e.syncStatusLocked(&wg)
 	wg.Wait()
 }
 
-func (e *Engine) tickLocked(wg *sync.WaitGroup, dt float64) {
+func (e *Engine) tickObjectLocked(wg *sync.WaitGroup, dt float64) {
 	e.RLock()
 	defer e.RUnlock()
 
@@ -170,6 +190,12 @@ func (e *Engine) tickLocked(wg *sync.WaitGroup, dt float64) {
 			o.tick(dt)
 		}(o)
 	}
+}
+
+func (e *Engine) tickEventLocked(wg *sync.WaitGroup, dt float64) {
+	e.RLock()
+	defer e.RUnlock()
+
 	for _, event := range e.events {
 		if event.Heavy() {
 			wg.Add(1)
@@ -183,7 +209,7 @@ func (e *Engine) tickLocked(wg *sync.WaitGroup, dt float64) {
 	}
 }
 
-func (e *Engine) saveStatusLocked(wg *sync.WaitGroup) {
+func (e *Engine) syncStatusLocked(wg *sync.WaitGroup) {
 	e.Lock()
 	defer e.Unlock()
 
@@ -194,6 +220,7 @@ func (e *Engine) saveStatusLocked(wg *sync.WaitGroup) {
 			o.saveStatus()
 		}(o)
 	}
+	// remove not alive events
 	for i := 0; i < len(e.events); {
 		event := e.events[i]
 		if event.AliveTime() == 0 {

event.go

@@ -1,3 +1,19 @@
+// molecular is a 3D physics engine written in Go
+// Copyright (C) 2023  Kevin Z <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package molecular
 
 import (
@@ -132,7 +148,6 @@ func (e *Engine) newGravityWave(sender *Object, center Vec3, f *GravityField, ti
 	g := gravityStatusPool.Get().(*gravityStatus)
 	g.f = *f
 	g.pos = center
-	g.gone = false
 	g.c.Store(1)
 	maxRadius := -1.0
 	if e.cfg.MinAccel > 0 {
@@ -143,6 +158,7 @@ func (e *Engine) newGravityWave(sender *Object, center Vec3, f *GravityField, ti
 	for i := (uint16)(2); i != 0 && tick&(i-1) == 0; i <<= 2 {
 		life++
 	}
+	g.life = life
 	if life < len(maxRs) {
 		if maxr := maxRs[life]; maxr < maxRadius {
 			maxRadius = maxr

event_test.go

@@ -1,3 +1,19 @@
+// molecular is a 3D physics engine written in Go
+// Copyright (C) 2023  Kevin Z <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package molecular_test
 
 import (

force.go

@@ -1,3 +1,19 @@
+// molecular is a 3D physics engine written in Go
+// Copyright (C) 2023  Kevin Z <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package molecular
 
 import (
@@ -21,7 +37,7 @@ func NewGravityField(mass float64, radius float64) *GravityField {
 	return &GravityField{
 		mass:   mass,
 		radius: radius,
-		rSq: radius * radius,
+		rSq:    radius * radius,
 		rCube:  1 / (radius * radius * radius),
 	}
 }
@@ -65,7 +81,7 @@ type gravityStatus struct {
 	f   GravityField
 	pos Vec3
 
-	gone bool
+	life int
 	c    atomic.Int32
 }
 
@@ -83,7 +99,7 @@ func (s *gravityStatus) clone() (g *gravityStatus) {
 	g = gravityStatusPool.Get().(*gravityStatus)
 	g.f = s.f
 	g.pos = s.pos
-	g.gone = false
+	g.life = s.life
 	g.c.Store(1)
 	return
 }

matter.go

@@ -1,3 +1,19 @@
+// molecular is a 3D physics engine written in Go
+// Copyright (C) 2023  Kevin Z <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package molecular
 
 // MaterialProps saves the Material properties

motion.go

@@ -1,3 +1,19 @@
+// molecular is a 3D physics engine written in Go
+// Copyright (C) 2023  Kevin Z <[email protected]>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 package molecular
 
 import (