我們設置系統的方式使得編輯碰撞檢測框(即碰撞盒)并不容易。所以,我們的下一步是擴展我們的編輯器,尤其是精靈編輯器,以便我們能夠在編輯器中直接編輯碰撞盒。
編輯碰撞盒
讓我們加載Sprite編輯器。例如,這里的碰撞檢測框實際上并不是一個精靈,而是一個碰撞盒。我們想要給編輯器一些工具,讓它能夠識別并顯示這些碰撞盒。
問題是,我們如何保存這些信息?如果我們只是在編輯器中添加一個菜單項來繪制這個碰撞盒,但當我們導出并重新加載時,這些信息就會丟失。因此,我們需要添加元數據。
元數據是什么?
元數據是關于數據的數據。在我們的案例中,我們有一堆精靈,這些精靈是要加載到游戲中的實際內容。但我們還有關于這些精靈的額外信息,這些信息對編輯器很有用,但在游戲中并不重要。這些額外信息就是元數據的完美候選者。
我們想要編輯器記住這是碰撞盒,并給我們一些好用的工具,但游戲本身并不關心這是否是碰撞盒,游戲有自己的方式來確定這些。
實現元數據
現在,讓我們創建一個名為meta
的數組,并在里面存放一些信息。然后,我們將這些信息寫入一個文件。例如,我們可以為每個精靈創建一個對象,包含精靈的名稱和是否是碰撞盒的標識。
當導出時,我們不僅要導出數據文件,還要導出元數據文件。我們可以將其命名為.mspr
文件,并將所有這些文本文件放入一個單獨的目錄中。
編輯器和UI更新
接下來,我們需要更新編輯器,以便它能夠顯示和編輯這些元數據。我們將添加一個按鈕,用于切換碰撞盒模式。當該模式開啟時,我們編輯的就不再是精靈本身,而是與該精靈相關聯的碰撞盒。
我們還需要確保在刪除或創建精靈時,相應地刪除或創建關聯的元數據條目。
測試和調整
讓我們測試一下我們的新系統。我們可以為玩家的子彈和敵人創建碰撞盒,并調整它們的大小和位置。通過編輯器,我們可以直觀地看到碰撞盒是如何與精靈疊加的,從而確保它們的位置準確無誤。
pico-8 cartridge // http://www.pico-8.com
version 41
__lua__
function _init()--- customize here ---#include shmup_myspr.txt#include shmup_myspr_meta.txtfile="shmup_myspr.txt"filem="shmup_myspr_meta.txt"arrname="myspr"data=mysprreload(0x0,0x0,0x2000,"cowshmup.p8")------------------------[[meta={}for x=1,#data domobj={}mobj[1]="spr "..xmobj[2]=0meta[x]=mobjend]]--debug={}msg={}_drw=draw_list_upd=update_listmenuitem(1,"export",export)curx=1cury=1scrolly=0scrollx=0poke(0x5f2d, 1)
endfunction _draw()_drw()if #msg>0 thenbgprint(msg[1].txt,64-#msg[1].txt*2,80,14)msg[1].t-=1if msg[1].t<=0 thendeli(msg,1)end end-- debug --cursor(4,4)color(8)for txt in all(debug) doprint(txt)end
endfunction _update60()dokeys()mscroll=stat(36)_upd()
endfunction dokeys()if stat(30) thenkey=stat(31)if key=="p" thenpoke(0x5f30,1)endelsekey=nilendend
-->8
--draw
function draw_edit()-- backgroundfillp(0b11001100001100111100110000110011)rectfill(0,0,127,127,33)fillp(?)line(63,0,63,127,13)line(0,63,127,63,13)fillp()draw_menu()-- draw spriteif selspr thenif meta[selspr][2]>0 thenwrapmspr(meta[selspr][2],63,63)msprc(selspr,63,63)elsewrapmspr(selspr,63,63)endend-- blinking dotif (time()*2)%1<0.5 thenpset(63,63,rnd({8,13,7,15}))end
endfunction draw_list()fillp(0b11001100001100111100110000110011)rectfill(0,0,127,127,33)fillp(?)line(63,0,63,127,13)line(0,63,127,63,13)fillp()draw_menu()-- draw spritelocal mymnu=menu[cury][curx]if mymnu and mymnu.cmdy thenif meta[mymnu.cmdy][2]>0 thenwrapmspr(meta[mymnu.cmdy][2],63,63)msprc(mymnu.cmdy,63,63)elsewrapmspr(mymnu.cmdy,63,63)endendif (time()*2)%1<0.5 thenpset(63,63,rnd({8,13,7,15}))end
endfunction draw_table()cls(2)draw_menu()
endfunction draw_menu()--spr(0,0,0,16,16)if menu thenfor i=1,#menu dofor j=1,#menu[i] dolocal mymnu=menu[i][j]local c=mymnu.c or 13if i==cury and j==curx thenc=7if _upd==upd_type thenc=0endendbgprint(mymnu.w,mymnu.x+scrollx,mymnu.y+scrolly,13) bgprint(mymnu.txt,mymnu.x+scrollx,mymnu.y+scrolly,c) endendendif _upd==upd_type thenlocal mymnu=menu[cury][curx]local txt_bef=sub(typetxt,1,typecur-1)local txt_cur=sub(typetxt,typecur,typecur)local txt_aft=sub(typetxt,typecur+1)txt_cur=txt_cur=="" and " " or txt_cur if (time()*2)%1<0.5 thentxt_cur="\^i"..txt_cur.."\^-i"endlocal txt=txt_bef..txt_cur..txt_aftbgprint(txt,mymnu.x+scrollx,mymnu.y+scrolly,7)endend-->8
--update
function update_edit()refresh_edit()if btnp(??) thencury-=1endif btnp(??) thencury+=1endcury=(cury-1)%#menu+1cury-=mscrollcury=mid(1,cury,#menu)if cury==1 thencurx=1if btnp(??) thenselspr-=1elseif btnp(??) thenselspr+=1endselspr=mid(1,selspr,#data) elseif cury==11 thencurx=1elsecurx=2endif btnp(🅾?) then_drw=draw_list_upd=update_listrefresh_list()cury=selsprcurx=1scrolly=0scrollx=0returnendif btnp(?) thenlocal mymnu=menu[cury][curx]if mymnu.cmd=="editval" then_upd=upd_typelocal s=tostr(data[mymnu.cmdy][mymnu.cmdx])if s=="[nil]" or s==nil thens=""endtypetxt=stypecur=#typetxt+1typecall=enter_editelseif mymnu.cmd=="editcol" then_upd=upd_typelocal s=tostr(meta[selspr][2])typetxt=stypecur=#typetxt+1typecall=enter_editcolelseif mymnu.cmd=="delspr" thendeli(data,selspr)deli(meta,selspr)selspr-=1if selspr==0 thenselspr=1end_drw=draw_list_upd=update_listrefresh_list()cury=selsprcurx=1scrolly=0scrollx=0return endend
endfunction update_list()refresh_list()if btnp(??) thencury-=1endif btnp(??) thencury+=1endcury=(cury-1)%#menu+1cury-=mscrollcury=mid(1,cury,#menu)curx=1local mymnu=menu[cury][curx]if mymnu.y+scrolly>110 thenscrolly-=4endif mymnu.y+scrolly<10 thenscrolly+=4endscrolly=min(0,scrolly)if mymnu.x+scrollx>110 thenscrollx-=2endif mymnu.x+scrollx<20 thenscrollx+=2endscrollx=min(0,scrollx)if btnp(?) thenlocal mymnu=menu[cury][curx]if mymnu.cmd=="newline" thenadd(data,{0,0,0,0,0,0})add(meta,{"new",0})elseif mymnu.cmd=="editspr" thenselspr=mymnu.cmdy_upd=update_edit_drw=draw_editscrolly=0scrollx=0refresh_edit()cury=1endend
endfunction update_table()refresh_table()if btnp(??) thencury-=1endif btnp(??) thencury+=1endcury=(cury-1)%#menu+1cury-=mscrollcury=mid(1,cury,#menu)if btnp(??) thencurx-=1endif btnp(??) thencurx+=1endif cury<#menu thencurx=(curx-2)%(#menu[cury]-1)+2elsecurx=1endlocal mymnu=menu[cury][curx]if mymnu.y+scrolly>110 thenscrolly-=4endif mymnu.y+scrolly<10 thenscrolly+=4endscrolly=min(0,scrolly)if mymnu.x+scrollx>110 thenscrollx-=2endif mymnu.x+scrollx<20 thenscrollx+=2endscrollx=min(0,scrollx)if btnp(?) thenlocal mymnu=menu[cury][curx]if mymnu.cmd=="edit" then_upd=upd_typetypetxt=tostr(mymnu.txt)typecur=#typetxt+1typecall=enter_tableelseif mymnu.cmd=="newline" thenadd(data,{0}) elseif mymnu.cmd=="newcell" thenadd(data[mymnu.cmdy],0)endend
endfunction upd_type()if key thenif key=="\r" then-- enter poke(0x5f30,1)typecall()returnelseif key=="\b" then--backspaceif typecur>1 thenif typecur>#typetxt thentypetxt=sub(typetxt,1,#typetxt-1)elselocal txt_bef=sub(typetxt,1,typecur-2)local txt_aft=sub(typetxt,typecur)typetxt=txt_bef..txt_aftendtypecur-=1endelseif typecur>#typetxt thentypetxt..=keyelselocal txt_bef=sub(typetxt,1,typecur-1)local txt_aft=sub(typetxt,typecur)typetxt=txt_bef..key..txt_aftendtypecur+=1endendif btnp(??) thentypecur-=1endif btnp(??) thentypecur+=1endtypecur=mid(1,typecur,#typetxt+1)
end
-->8
--toolsfunction bgprint(txt,x,y,c)print("\#0"..txt,x,y,c)
endfunction split2d(s)local arr=split(s,"|",false)for k, v in pairs(arr) doarr[k] = split(v)endreturn arr
endfunction wrapmspr(si,sx,sy)if si==nil thenbgprint("[nil]",sx-5*2+1,sy-2,14)returnendif myspr[si]==nil thenbgprint("["..si.."]",sx-5*2+1,sy-2,14)returnendlocal ms=myspr[si]if ms[8] then--check for loopsif ms[8]==si thenbgprint("[loop]",sx-6*2+1,sy-2,14)returnelseif checkloop(ms,10) thenbgprint("[loop]",sx-6*2+1,sy-2,14)return endendendmspr(si,sx,sy)
endfunction checkloop(ms,depth)depth-=1if depth<=0 thenreturn trueendif ms==nil thenreturn trueendif ms[8] thenreturn checkloop(myspr[ms[8]],depth)elsereturn falseend
endfunction mspr(si,sx,sy)local ms=myspr[si]sspr(ms[1],ms[2],ms[3],ms[4],sx-ms[5],sy-ms[6],ms[3],ms[4],ms[7]==1)if ms[7]==2 thensspr(ms[1],ms[2],ms[3],ms[4],sx-ms[5]+ms[3],sy-ms[6],ms[3],ms[4],true)endif ms[8] thenmspr(ms[8],sx,sy)end
endfunction msprc(si,sx,sy)local _x,_y,_w,_h,_ox,_oy,_fx,_nx=unpack(myspr[si])if _fx==2 then_w*=2end--sspr(_x,_y,_w,_h,sx-_ox,sy-_oy,_w,_h,_fx==1)rect(sx-_ox,sy-_oy,sx-_ox+_w-1,sy-_oy+_h-1,rnd({8,14,15}))
endfunction spacejam(n)local ret=""for i=1,n doret..=" "endreturn ret
end
-->8
--i/o
function export()local s=arrname.."=split2d\""for i=1,#data doif i>1 thens..="|"endfor j=1,#data[i] doif j>1 thens..=","ends..=data[i][j]endends..="\""printh(s,file,true)local s="meta=split2d\""for i=1,#meta doif i>1 thens..="|"endfor j=1,#meta[i] doif j>1 thens..=","ends..=meta[i][j]endends..="\""printh(s,filem,true)add(msg,{txt="exported!",t=120})--debug[1]="exported!"
end
-->8
--ui
function refresh_edit()menu={}add(menu,{{txt="< "..selspr.." "..meta[selspr][1].." >",w="",cmd="sprhead",x=2,y=2}})local lab={" x:"," y:","wid:","hgt:"," ox:"," oy:"," fx:","nxt:"}for i=1,8 dolocal s=tostr(data[selspr][i])if s==nil thens="[nil]"endadd(menu,{{txt=lab[i],w=" ",x=2,y=3+i*7},{txt=s,w=spacejam(#s),cmd="editval",cmdy=selspr,cmdx=i,x=2+16,y=3+i*7}}) endlocal coltxt=meta[selspr][2]==0 and "off" or tostr(meta[selspr][2])add(menu,{{txt="col:",w=spacejam(4),x=2,y=4+9*7},{txt=coltxt,w=spacejam(#coltxt),cmd="editcol",cmdy=selspr,x=19,y=4+9*7}})add(menu,{{txt="delete",w="",cmd="delspr",x=2,y=5+10*7}})
endfunction refresh_list()menu={}for i=1,#data dolocal lne={}local linemax=#data[i]if i==cury thenlinemax+=1 endadd(lne,{txt=i.." "..meta[i][1],w="",cmd="editspr",cmdy=i,x=2,y=-4+6*i})add(menu,lne)endadd(menu,{{txt=" + ",w=" ",cmd="newline",x=2,y=-4+6*(#data+1)+2, }})
endfunction refresh_table()menu={}for i=1,#data dolocal lne={}local linemax=#data[i]if i==cury thenlinemax+=1 endadd(lne,{txt=i,w=" ",cmd="",x=4,y=-4+8*i,c=2 })for j=1,linemax doif j==#data[i]+1 thenadd(lne,{txt="+",w=" ",cmd="newcell",cmdy=i,x=-10+14*(j+1),y=-4+8*i, })elseadd(lne,{txt=data[i][j],cmd="edit",cmdx=j,cmdy=i,x=-10+14*(j+1),y=-4+8*i,w=" "})endendadd(menu,lne)endadd(menu,{{txt=" + ",w=" ",cmd="newline",x=4,y=-4+8*(#data+1), }})
endfunction enter_table()local mymnu=menu[cury][curx]local typeval=tonum(typetxt)if typeval==nil thenif mymnu.cmdx==#data[mymnu.cmdy] and typetxt=="" then--delete celldeli(data[mymnu.cmdy],mymnu.cmdx)if mymnu.cmdx==1 thendeli(data,mymnu.cmdy)end_upd=update_tablereturnend typeval=0enddata[mymnu.cmdy][mymnu.cmdx]=typeval_upd=update_tablerefresh_table()
endfunction enter_edit()local mymnu=menu[cury][curx]local typeval=tonum(typetxt)if mymnu.cmdx==8 thenif typeval!=nil thenif data[mymnu.cmdy][7]==nil thendata[mymnu.cmdy][7]=0endendendif typeval==nil thenif mymnu.cmdx>=7 and mymnu.cmdx==#data[mymnu.cmdy] thendeli(data[mymnu.cmdy],mymnu.cmdx)elsedata[mymnu.cmdy][mymnu.cmdx]=0endelsedata[mymnu.cmdy][mymnu.cmdx]=typevalend _upd=update_editrefresh_edit()
endfunction enter_editcol()local mymnu=menu[cury][curx]local typeval=tonum(typetxt)if typeval==nil or typeval<1 thenmeta[selspr][2]=0elsemeta[selspr][2]=typevalend_upd=update_editrefresh_edit()
end
__gfx__
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__map__
0000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000