hey indi..."i dont think you fully understand" this code...
this is from the TANK DEMO ..from darkbasic..and there is not 4 object..this is only hypothetic..object..
and he cant understand this code if he dont have ALL the tank demo...
ok ill explain how it work:
--------------------------------------------------------------------------
foot#=110
ta#=wrapvalue(a#-45)
frontleftx#=newxvalue(x#,ta#,foot#) : frontleftz#=newzvalue(z#,ta#,foot#)
ta#=wrapvalue(a#+45)
frontrightx#=newxvalue(x#,ta#,foot#) : frontrightz#=newzvalue(z#,ta#,foot#)
ta#=wrapvalue(a#+225)
backleftx#=newxvalue(x#,ta#,foot#) : backleftz#=newzvalue(z#,ta#,foot#)
ta#=wrapvalue(a#+135)
backrightx#=newxvalue(x#,ta#,foot#) : backrightz#=newzvalue(z#,ta#,foot#)
ok FOOT# is the distance between the middle and the 4 corner(each one)...
ok TA# is the angle of the 4 corner (1 each TA#) ..cause the tank in the tank demo is a box ...then... .. and the a# is the angle of the object..itself (the tank)
ok after :FRONTLEFTX# ..and the other variable like that are the X and Z of the 4 corner...
---------------------------------------------------------------------------
frontlefth#=get ground height(1,frontleftx#-mx#,frontleftz#-mz#)
frontrighth#=get ground height(1,frontrightx#-mx#,frontrightz#-mz#)
backlefth#=get ground height(1,backleftx#-mx#,backleftz#-mz#)
backrighth#=get ground height(1,backrightx#-mx#,backrightz#-mz#)
across#=((frontrighth#-frontlefth#)+(backrighth#-backlefth#))/2.0
length#=((backlefth#-frontlefth#)+(backrighth#-frontrighth#))/2.0
ok first MX# and MZ# are the position of the matrix.... its why he soustract MX# and MZ from the corner coordinate
ok and the FRONTLEFTH# and the other variable like that are the height of the 4 corner...
ACROSS# and LENGHT# are the average of the height ...of the corner...i mean see this: frontrighth#-frontlefth# is the difference between right and left front corner.. and :backrighth#-backlefth# is the diference between right and left back corner... and they add them together and divide them by 2 .... this is the average.....of the left/right height..they do same thing with back/front
-----------------------------------------------------------------------------
h#=get ground height(1,x#-mx#,z#-mz#)
trackh#=(frontlefth#+frontrighth#+backlefth#+backrighth#)/4.0
if trackh#>h# then h#=trackh#
position object 1,x#,h#,z#
yrotate object 1,a#
rotate object 2,wrapvalue(length#/4.0),0,wrapvalue(across#/4.0)
OK this is the tricky part.... the 5 first line i wont explain them...cause they are for animation...and simple motion...
BUT the last line: rotate object 2,wrapvalue(length#/4.0),0,wrapvalue(across#/4.0)
i CANT FIGURE how it WORK!!!!
...this is ...weird..then i made my OWN formulate to calculate the angle then replace the last line:
(rotate object 2,wrapvalue(length#/4.0),0,wrapvalue(across#/4.0))
by:
az#=wrapvalue(asin(across#/sqrt(2*110^2)))
ax#=wrapvalue(asin(length#/sqrt(2*110^2)))
rotate object 2,ax#,0,az#
and it WORK PERFECTLY ...it give EXACTLY the same thing.. ive tested it....
this is simple trigonometrie.. just calculate the angle on X and X with the distance FOOT# who is 110 and average height (ACROSS# LENGHT#) and then rotate the tank.....
try it... with your tank demo...
if you dont have it ..i have it here with my modification (search for the word Chiwawa in the code..to find the modification)(you need the media):
Rem * Title : TANK
Rem * Author : DBS-LB
Rem * Date : 1st May 2000
rem ********************************************
rem * TANK *
rem ********************************************
rem * AUTHOR: Lee Bamber DATE: 1st May 2000 *
rem ********************************************
rem * MODIFICATION: Chiwawa *
rem ********************************************
rem Setup environment
hide mouse
sync rate 30
autocam off
sync on
rem Decal limit (full version users can set this to 100)
dim decallimit(1)
decallimit(1)=50
rem Game array
dim decal#(100,10)
rem Load sounds and music
load sound "bang.wav",1
load music "music.mid",1 : loop music 1
rem Load and create images
load bitmap "sands.bmp",1
get image 4,0,0,256,256
ink rgb(255,255,255),rgb(150,150,255) : cls
for t=1 to 10000 : dot rnd(256),rnd(256) : next t
blur bitmap 1,1
get image 1,0,0,256,256
delete bitmap 1
rem Load images
gosub _loadimages
rem Make landscape
landsize=5000
set camera range 10,landsize*2
make matrix 1,landsize*2,landsize*2,25,25
prepare matrix texture 1,4,4,4
randomize matrix 1,200
rem Texture landscape
for z=0 to 24
for x=0 to 24
rem Shaded dirt and grass
shade=getshade(x,z)
set matrix tile 1,x,z,shade
rem Roads
if z=12 or x=12
lvl=rnd(2)
lvl#=0.0-(lvl*10.0)
set matrix tile 1,x,z,13+lvl
set matrix height 1,x,z,lvl#
set matrix height 1,x+1,z,lvl#
set matrix height 1,x,z+1,lvl#
set matrix height 1,x+1,z+1,lvl#
endif
next x
next z
update matrix 1
rem Load and place objects
dim size(35)
for t=1 to 10
load object "build1.x",20+t
position object 20+t,landsize+700,-49,landsize-(t*2000)
size(20+t)=350
next t
load object "build3.x",31 : position object 31,landsize+900,-49,landsize+900
load object "wtower.x",32 : position object 32,landsize-900,-49,landsize-900
load object "turret.x",33 : position object 33,landsize-500,-49,landsize-3500
load object "radar.x",34 : position object 34,landsize-1000,-49,landsize+1900
load object "milveh01.x",35 : position object 35,landsize,50,landsize+3000
scale object 34,300,300,300 : scale object 35,5000,5000,5000
size(31)=400 : size(32)=250 : size(33)=200 : size(34)=400 : size(35)=250
rem Create fog and ambience
set ambient light 40
if fog available()=1
fog on : fog distance 5000 : fog color rgb(150,40,0)
endif
rem Create a tilt object (to handle "independent" X & Z axis rotation)
make object cone 1,5
hide limb 1,0
rem Load tank model
load object "irontankattack.x",2
scale object 2,100,100,100 :rem 75,75,75
yrotate object 2,180
fix object pivot 2
hide limb 2,1 : hide limb 2,11 : hide limb 2,14
rem Glue tank to tilt-object
glue object to limb 2,1,0
rem Tank track texture
load bitmap "irontanktanktrak.bmp",2
get image 2,0,0,128,128
get image 3,0,0,128,128
set current bitmap 0
rem Apply texture to tank tracks
texture limb 2,12,2
texture limb 2,15,2
rem Create small bullet
make object sphere 3,50
texture object 3,6
hide object 3
rem Create spherical sky
make object sphere 4,(landsize*2)-500
set object collision off 4
scale object 4,100,50,100
set object 4,1,1,0
texture object 4,1
fade object 4,0
backdrop off
rem Create map stat
load image "map.bmp",5
make object plain 51,256,256
lock object on 51
position object 51,-490,-340,800
ghost object on 51
texture object 51,5
rem Small ground of perimitor trees
load image "tree.bmp",4
make object plain 52,200,400 : make mesh from object 52,52
add limb 52,1,52 : rotate limb 52,1,0,90,0
make mesh from object 52,52 : delete object 52
make object 52,52,0
range=5000
halfrange=range/2
for t=1 to 80
if t>=1 and t<=20 : rx=rnd(range) : rz=range : endif
if t>20 and t<=40 : rx=range : rz=rnd(range) : endif
if t>40 and t<=60 : rx=rnd(range) : rz=0 : endif
if t>60 and t<=80 : rx=0 : rz=rnd(range) : endif
rx=(rx-500)+rnd(1000)
rz=(rz-500)+rnd(1000)
if rx>halfrange-250 and rx<halfrange+250 then rx=halfrange-250
if rz>halfrange-250 and rz<halfrange+250 then rz=halfrange-250
add limb 52,t,52
offset limb 52,t,rx,0,rz
next t
make mesh from object 52,52 : delete object 52 : make object 52,52,4
position object 52,landsize-(halfrange),190,landsize-(halfrange)
set object 52,1,0,0
rem Set game variables
x#=landsize
z#=landsize
bulletalive=0
cx#=landsize
cy#=2000
cz#=landsize-2000
rem Place demo logo
placelogo()
rem Begin main loop
lowmode=0
do
rem Low Mode switch
if lower$(inkey$())="l" and lowmode=0
lowmode=1
hide object 4
hide object 51
hide object 52
backdrop on
color backdrop rgb(0,0,0)
fog off
endif
if lower$(inkey$())="h" then hide object 65000
rem Control tank
if upkey()=1 and s#<10.0 then s#=s#+4.0
if downkey()=1 and s#>-10.0 then s#=s#-4.0
if leftkey()=1 then s#=s#+0.1 : a#=wrapvalue(a#-5)
if rightkey()=1 then s#=s#+0.1 : a#=wrapvalue(a#+5)
rem Control turret bullet
if spacekey()=1 and bulletalive=0 then gosub _start_bullet
if bulletalive>0 then gosub _move_bullet
if bulletalive<0 then gosub _explode_bullet
rem Calculate tank data
oldx#=x#
oldz#=z#
x#=newxvalue(x#,a#,s#)
z#=newzvalue(z#,a#,s#)
s#=s#/1.2
rem Detect for tank collision with structures
for t=21 to 34
if getdistance(x#,z#,t)<size(t)
x#=oldx# : z#=oldz#
endif
next t
rem Detect for tank collision with other tank
if getdistance(x#,z#,35)<size(35)
dx#=object position x(35)-x#
dz#=object position z(35)-z#
da#=atanfull(dx#,dz#)
a#=curveangle(da#,a#,15.0)
x#=newxvalue(x#,a#,-30.0)
z#=newzvalue(z#,a#,-30.0)
endif
rem Landscape follows tank (using smooth shifting)
gridunitsize#=(landsize*2)/25.0
shx#=shx#+(x#-oldx#)
shz#=shz#+(z#-oldz#)
if shx#<0.0 then shx#=shx#+gridunitsize# : shift matrix right 1 : shtrackx=shtrackx+1
if shx#>=gridunitsize# then shx#=shx#-gridunitsize# : shift matrix left 1 : shtrackx=shtrackx-1
if shz#<0.0 then shz#=shz#+gridunitsize# : shift matrix down 1 : shtrackz=shtrackz+1
if shz#>=gridunitsize# then shz#=shz#-gridunitsize# : shift matrix up 1 : shtrackz=shtrackz-1
mx#=(x#-landsize)-shx# : mz#=(z#-landsize)-shz#
position matrix 1,mx#,0,mz#
rem Smooth control camera
cdx#=newxvalue(x#,a#,-500)
cdz#=newzvalue(z#,a#,-500)
cdy#=get ground height(1,cx#-mx#,cz#-mz#)+50
if cdy#<225 then cdy#=225
cx#=curvevalue(cdx#,cx#,10.0)
cy#=curvevalue(cdy#,cy#,10.0)
cz#=curvevalue(cdz#,cz#,10.0)
position camera cx#,cy#,cz#
point camera x#,get ground height(1,x#-mx#,z#-mz#)+100,z#
rem Update textures
if s#<=-0.1 or s#>=0.1 then scrolltanktracks(s#)
rem Scroll sky
scroll object texture 4,0.0005,0
fade object 4,0
rem Calculate four X+Z coordinates for each corner
foot#=110
ta#=wrapvalue(a#-45)
frontleftx#=newxvalue(x#,ta#,foot#) : frontleftz#=newzvalue(z#,ta#,foot#)
ta#=wrapvalue(a#+45)
frontrightx#=newxvalue(x#,ta#,foot#) : frontrightz#=newzvalue(z#,ta#,foot#)
ta#=wrapvalue(a#+225)
backleftx#=newxvalue(x#,ta#,foot#) : backleftz#=newzvalue(z#,ta#,foot#)
ta#=wrapvalue(a#+135)
backrightx#=newxvalue(x#,ta#,foot#) : backrightz#=newzvalue(z#,ta#,foot#)
rem Calculate degree of tilting from corner heights
frontlefth#=get ground height(1,frontleftx#-mx#,frontleftz#-mz#)
frontrighth#=get ground height(1,frontrightx#-mx#,frontrightz#-mz#)
backlefth#=get ground height(1,backleftx#-mx#,backleftz#-mz#)
backrighth#=get ground height(1,backrightx#-mx#,backrightz#-mz#)
across#=((frontrighth#-frontlefth#)+(backrighth#-backlefth#))/2.0
length#=((backlefth#-frontlefth#)+(backrighth#-frontrighth#))/2.0
rem Update tank model
h#=get ground height(1,x#-mx#,z#-mz#)
trackh#=(frontlefth#+frontrighth#+backlefth#+backrighth#)/4.0
if trackh#>h# then h#=trackh#
position object 1,x#,h#,z#
yrotate object 1,a#
` Chiwawa Uncomment this line to get the original version and comment the 3 following but try it like that first...
` rotate object 2,wrapvalue(length#/4.0),0,wrapvalue(across#/4.0)
`This is MY formulate..the 3 next line.. it GIVE EXACTLY the same thing...
az#=wrapvalue(asin(across#/sqrt(2*110^2)))
ax#=wrapvalue(asin(length#/sqrt(2*110^2)))
rotate object 2,ax#,0,az#
rem Sky follows tank
position object 4,x#,0,z#
rem Rotate radar
rotate limb 34,1,0,wrapvalue(limb angle y(34,1)+0.1),0
rem Contro enemy tank
gosub _control_enemytank
rem Control decals
controldecals(mx#,mz#)
rem Update screen
sync
rem End loop
loop
rem ** Subroutines
_control_enemytank:
rem Move enemy tank
yrotate object 35,180
move object 35,-20
if getdistance(x#,z#,35)>6000.0
if enemygo=0
position object 35,landsize,50,z#-6000
enemygo=1
endif
else
enemygo=0
endif
rem Adjust to ground height
gh#=get ground height(1,object position x(35)-mx#,object position z(35)-mz#)
position object 35,object position x(35),gh#+60.0,object position z(35)
rem Control enemy tank
ex#=object position x(35)-x#
ez#=object position z(35)-z#
dist#=sqrt(abs(ex#*ex#)+abs(ez#*ez#))
if dist#<2500
etankd#=wrapvalue(atanfull(ex#,ez#)+180)
else
etankd#=0.0
endif
etank#=wrapvalue(curveangle(etankd#,etank#,5.0))
eox#=sin(etank#)*-3.0
eoz#=(sin(wrapvalue(etank#-90))*3)+1.5
rem Setup enemy tank turret
rotate limb 35,3,0,etank#,0
rotate limb 35,12,0,etank#,0
rotate limb 35,13,0,etank#,0
rotate limb 35,14,0,etank#,0
rotate limb 35,16,0,etank#,0
rotate limb 35,18,0,etank#,0
rotate limb 35,19,0,etank#,0
offset limb 35,3,eox#,0,eoz#
offset limb 35,12,eox#,0,eoz#
offset limb 35,13,eox#,0,eoz#
offset limb 35,14,eox#,0,eoz#
offset limb 35,16,eox#,0,eoz#
offset limb 35,18,eox#,0,eoz#
offset limb 35,19,eox#,0,eoz#
rem Enemy fires when tank gets close
if dist#<1500.0
fx#=newxvalue(limb position x(35,19),etank#,250.0)
fy#=limb position y(35,19)-35.0
fz#=newzvalue(limb position z(35,19),etank#,250.0)
da#=etank# : inc#=rnd(100)/100.0
makeflame(fx#,fy#,fz#,da#,inc#)
endif
rem Enemy turret also fires flames
rotate limb 33,4,0,wrapvalue(limb angle y(33,4)+1.0),0
ex#=object position x(33)-x#
ez#=object position z(33)-z#
dist#=sqrt(abs(ex#*ex#)+abs(ez#*ez#))
adif#=abs(wrapvalue(180+(atanfull(ex#,ez#)-(limb angle y(33,4)+90))))
if dist#<1000.0 and (adif#<45.0 or adif#>315.0) then turretflameon=50
rem Turret-flame control
if turretflameon>0
turretflameon=turretflameon-1
makeflame(limb position x(33,7),limb position y(33,7)-50.0,limb position z(33,7),limb angle y(33,4)+90,-1.0)
makeflame(limb position x(33,10),limb position y(33,10)-50.0,limb position z(33,10),limb angle y(33,4)+90,-1.0)
endif
return
_start_bullet:
rem Calculate position of bullet creation
bx#=newxvalue(x#,a#,100)
bz#=newzvalue(z#,a#,100)
by#=get ground height(1,bx#-mx#,bz#-mz#)+50
rem Recoil tank
play object 2 : set object speed 2,40 : play sound 1 : s#=-25.0
rem Begin life of bullet
position object 3,bx#,by#,bz#
rotate object 3,wrapvalue(object angle x(2)-10),a#,0
scale object 3,100,50,100
color object 3,rgb(180,180,230)
fade object 3,100
ghost object off 3
show object 3
bulletalive=50
rem Smoke from bullet
makesmoke(object position x(3),object position y(3),object position z(3),1.0)
return
_move_bullet:
rem Arc bullet by slowly rotation X axis whilst moving
xrotate object 3,wrapvalue(object angle x(3)+1.0)
move object 3,40
rem Detect for tank collision
detonate=0
for t=21 to 35
if getdistance(object position x(3),object position z(3),t)<size(t) and object position y(3)<size(t)
detonate=1
endif
next t
rem Detect collision with ground to destroy
if get ground height(1,object position x(3)-mx#,object position z(3)-mz#)>object position y(3) or detonate=1
rem Show explosion from bullet
bulletalive=-20 : play sound 1
texture object 3,6
ghost object on 3
rem At point of impact, make crator
gridunitsize#=(landsize*2.0)/25.0
gridx=int((object position x(3)-mx#)/gridunitsize#)
gridz=int((object position z(3)-mz#)/gridunitsize#)
rem Affect matrix with changes
gridy#=get ground height(1,object position x(3)-mx#,object position z(3)-mz#)
for tx=gridx-1 to gridx+1
for ty=gridz-1 to gridz+1
if tx>0 and tx<25 and ty>0 and ty<25
gridy#=get matrix height(1,tx,ty)
ngy#=gridy#-20-rnd(20)
if ngy#<-50.0 then ngy#=-50.0
set matrix height 1,tx,ty,ngy#
relax=(tx-shtrackx)
if relax<0 then relax=relax+25
if relax>25 then relax=relax-25
relaz=(ty-shtrackz)
if relaz<0 then relaz=relaz+25
if relaz>25 then relaz=relaz-25
if relax=12 or relaz=12
set matrix tile 1,tx,ty,16
else
tt=12-abs((ngy#+50.0)/10.0)
if tt<0 then tt=0
if tt>12 then tt=12
set matrix tile 1,tx,ty,tt
endif
endif
next ty
next tx
update matrix 1
rem Make a huge explosion
gh#=get ground height(1,object position x(3)-mx#,object position z(3)-mz#)
makefire(object position x(3),gh#,object position z(3),0)
makefire(object position x(3),gh#,object position z(3),45)
makefire(object position x(3),gh#,object position z(3),90)
makefire(object position x(3),gh#,object position z(3),135)
makesmoke(object position x(3),object position y(3)+25.0,object position z(3),1.0)
makesmoke(object position x(3),object position y(3)+25.0,object position z(3),1.0)
for t=1 to 5
makedebree(object position x(3),object position y(3)+25.0,object position z(3))
next t
endif
return
_explode_bullet:
rem Scale up bullet as it explodes
scl=(((50*150))-(((abs(bulletalive))*150)))-3500
scale object 3,scl,scl,scl
fd=abs(bulletalive*5)
if fd<0 then fd=0
if fd>100 then fd=100
fade object 3,fd
xrotate object 3,wrapvalue(object angle x(3)+10)
rem Count down during explosion
bulletalive=bulletalive+2
if bulletalive=0
hide object 3
endif
return
_loadimages:
rem Load fires
load image "fire.bmp",6
load bitmap "fireanim.bmp",5
for x=0 to 3 : get image 7+x,(x*128),0,(x*128)+128,140 : next x
delete bitmap 5
load image "fireball.bmp",12
rem Load smoke
load image "smoke.bmp",11
return
rem ** Functions
function makefire(x#,y#,z#,r)
rem Find spare decal
fd=1 : for d=1 to decallimit(1) : if decal#(d,1)=0 : fd=d : endif : next d
rem Create fire
decal#(fd,1)=1
decal#(fd,2)=x#
decal#(fd,3)=y#
decal#(fd,4)=z#
decal#(fd,5)=r
decal#(fd,6)=0
decal#(fd,7)=0
decal#(fd,8)=100
rem Object
objid=1000+fd : dodecal(objid)
endfunction
function makesmoke(x#,y#,z#,size#)
rem Find spare decal
fd=1 : for d=1 to decallimit(1) : if decal#(d,1)=0 : fd=d : endif : next d
rem Create fire
decal#(fd,1)=2
decal#(fd,2)=x#+5-rnd(10)
decal#(fd,3)=y#+5-rnd(10)
decal#(fd,4)=z#+5-rnd(10)
decal#(fd,5)=rnd(350)
decal#(fd,6)=2+rnd(2)
decal#(fd,7)=rnd(20)/10.0
decal#(fd,8)=100-rnd(10)
decal#(fd,9)=size#
rem Object
objid=1000+fd : dodecal(objid)
texture object objid,11
endfunction
function makedebree(x#,y#,z#)
rem Find spare decal
fd=1 : for d=1 to decallimit(1) : if decal#(d,1)=0 : fd=d : endif : next d
rem Create fire
decal#(fd,1)=3
decal#(fd,2)=x#
decal#(fd,3)=y#
decal#(fd,4)=z#
decal#(fd,5)=15.0+rnd(5)
decal#(fd,6)=rnd(6)-3.0
decal#(fd,7)=rnd(6)-3.0
decal#(fd,8)=100-rnd(10)
rem Object
objid=1000+fd : dodecal(objid)
texture object objid,6
rotate object objid,rnd(350),rnd(350),rnd(350)
ghost object off objid
endfunction
function makeflame(x#,y#,z#,da#,inc#)
rem Find spare decal
fd=1 : for d=1 to decallimit(1) : if decal#(d,1)=0 : fd=d : endif : next d
rem Create fire
decal#(fd,1)=4
decal#(fd,2)=x#
decal#(fd,3)=y#+50.0
decal#(fd,4)=z#
decal#(fd,5)=inc#
decal#(fd,6)=da#
` decal#(fd,7)=dz#
decal#(fd,8)=80
decal#(fd,9)=rnd(350)
rem Object
objid=1000+fd : dodecal(objid)
texture object objid,12
endfunction
function dodecal(objid)
if object exist(objid)=0 then make object plain objid,250,100
set object objid,1,0,0
ghost object on objid
endfunction
function controldecals(mx#,mz#)
rem All decals
aftersmoke=0
for d=1 to decallimit(1)
rem Object id
objid=1000+d
if object exist(objid)=1
rem Control fire decals
if decal#(d,1)=1
ex#=1.0*decal#(d,8)
position object objid,decal#(d,2),decal#(d,3)+ex#-75.0,decal#(d,4)
rotate object objid,0,wrapvalue(decal#(d,5)),0
texture object objid,7+decal#(d,6)
decal#(d,7)=decal#(d,7)+1
if decal#(d,7)=2
decal#(d,7)=0
decal#(d,6)=decal#(d,6)+1
if decal#(d,6)=4 then decal#(d,6)=0
endif
scale object objid,decal#(d,8),decal#(d,8),decal#(d,8)
decal#(d,8)=decal#(d,8)-1
if decal#(d,8)=0
decal#(d,1)=0
endif
show object objid
endif
rem Control smoke decals
if decal#(d,1)=2
position object objid,decal#(d,2),decal#(d,3),decal#(d,4)
point object objid,camera position x(),camera position y(),camera position z()
xrotate object objid,0 : zrotate object objid,0
decal#(d,5)=wrapvalue(decal#(d,5)+4)
decal#(d,2)=decal#(d,2)+(cos(decal#(d,5))*decal#(d,7))
decal#(d,3)=decal#(d,3)+decal#(d,6)
scx#=(150-(decal#(d,8)*1.3))*decal#(d,9)
scz#=(250-decal#(d,8))*decal#(d,9)
scale object objid,scx#,decal#(d,8)*2,scz#
decal#(d,8)=decal#(d,8)-0.75-(1.0-decal#(d,9))
if decal#(d,8)<=0
decal#(d,1)=0
endif
show object objid
endif
rem Control debree decals
if decal#(d,1)=3
position object objid,decal#(d,2),decal#(d,3),decal#(d,4)
rotate object objid,wrapvalue(object angle x(objid)+4),0,wrapvalue(object angle z(objid)+3)
decal#(d,2)=decal#(d,2)+decal#(d,6)
decal#(d,3)=decal#(d,3)+decal#(d,5)
decal#(d,4)=decal#(d,4)+decal#(d,7)
decal#(d,5)=decal#(d,5)-1
if decal#(d,5)<-10.0 then decal#(d,5)=-20.0
scale object objid,decal#(d,8)/5.0,decal#(d,8)/5.0,decal#(d,8)/5.0
decal#(d,8)=decal#(d,8)-1
if decal#(d,8)<=0
decal#(d,1)=0
endif
show object objid
endif
rem Control flame decals
if decal#(d,1)=4
position object objid,decal#(d,2),decal#(d,3),decal#(d,4)
point object objid,camera position x(),camera position y(),camera position z()
xrotate object objid,0
decal#(d,9)=wrapvalue(decal#(d,9)+8.0)
zrotate object objid,decal#(d,9)
decal#(d,2)=newxvalue(decal#(d,2),decal#(d,6),15.0)
decal#(d,4)=newzvalue(decal#(d,4),decal#(d,6),15.0)
decal#(d,3)=decal#(d,3)+decal#(d,5)
decal#(d,5)=decal#(d,5)-0.15
if decal#(d,5)<-10.0 then decal#(d,5)=-20.0
scale object objid,(100-decal#(d,8))/1.5,100-decal#(d,8),100-decal#(d,8)
decal#(d,8)=decal#(d,8)-1
gh#=get ground height(1,object position x(objid)-mx#,object position z(objid)-mz#)
if gh#>decal#(d,3) then decal#(d,8)=0
if decal#(d,8)<=0
aftersmoke=d
decal#(d,1)=0
endif
show object objid
endif
rem Control..
rem Hide unused decals
if decal#(d,1)=0 then hide object objid
endif
rem End of decal loop
next d
rem New smoke
if aftersmoke>0
d=aftersmoke : makesmoke(decal#(d,2),decal#(d,3),decal#(d,4),0.5)
aftersmoke=0
endif
endfunction
function scrolltanktracks(s#)
rem Scroll the tank track texture
scroll limb texture 2,12,s#/60.0,0
scroll limb texture 2,15,s#/60.0,0
endfunction
function getshade(x,z)
rem Calculate shade value from surrounding tiles
nav#=0 : navc=0
for tx=-1 to 1
for tz=-1 to 1
nx=x+tx
nz=z+tz
if nx>=0 and nx<=24
if nz>=0 and nz<=24
nav#=nav#+get matrix height(1,nx,nz)
inc navc
endif
endif
next tz
next tx
shade=abs(nav#/navc)/10.0
if shade<0 then shade=0
if shade>10 then shade=10
endfunction shade
function getdistance(x#,z#,obj2)
rem Calculate distance between two objects
dx#=object position x(obj2)-x#
dz#=object position z(obj2)-z#
dist#=sqrt((dx#*dx#)+(dz#*dz#))
endfunction dist#
function placelogo()
rem Create decal for logo
load image "logow.bmp",65000
make object plain 65000,128,144
position object 65000,25,-16.4,40
texture object 65000,65000
scale object 65000,10,10,50
set object 65000,1,0,0
fade object 65000,200
lock object on 65000
ghost object on 65000
endfunction
if you want any precision ..on the part of code that ive modicated...or anything else..just ask..
