TEXT模块会生成文本对象用于绘制

优化绘制方式，略微提升性能

Zframework/text.lua

@@ -1,80 +1,100 @@
 local gc=love.graphics
-local gc_getColor,gc_setColor,gc_push,gc_pop=gc.getColor,gc.setColor,gc.push,gc.pop
+local getColor,setColor=gc.getColor,gc.setColor
-local gc_translate,gc_scale,gc_rotate,gc_shear=gc.translate,gc.scale,gc.rotate,gc.shear
 
 local int,rnd=math.floor,math.random
 local ins,rem=table.insert,table.remove
-local mStr=mStr
+local getFont=FONT.get
+local draw=gc.draw
 
 local texts={}
 
 local textFX={}
 function textFX.appear(t)
-    mStr(t.text,t.x,t.y-t.font*.7)
+    draw(
+        t.text,t.x,t.y,
+        nil,
+        nil,nil,
+        t.text:getWidth()*.5,t.text:getHeight()*.5
+    )
 end
 function textFX.sudden(t)
-    gc_setColor(1,1,1,1-t.c)
+    setColor(1,1,1,1-t.c)
-    mStr(t.text,t.x,t.y-t.font*.7)
+    draw(
+        t.text,t.x,t.y,
+        nil,
+        nil,nil,
+        t.text:getWidth()*.5,t.text:getHeight()*.5
+    )
 end
 function textFX.fly(t)
-    mStr(t.text,t.x+(t.c-.5)^3*300,t.y-t.font*.7)
+    draw(
+        t.text,t.x+(t.c-.5)^3*300,t.y,
+        nil,
+        nil,nil,
+        t.text:getWidth()*.5,t.text:getHeight()*.5
+    )
 end
 function textFX.stretch(t)
-    gc_push('transform')
+    draw(
-        gc_translate(t.x,t.y)
+        t.text,t.x,t.y,
-        if t.c<.3 then
+        nil,
-            gc_scale((.3-t.c)*1.6+1,1)
+        t.c<.3 and(.3-t.c)*1.6+1 or 1,1,
-        end
+        t.text:getWidth()*.5,t.text:getHeight()*.5
-        mStr(t.text,0,-t.font*.7)
+    )
-    gc_pop()
 end
 function textFX.drive(t)
-    gc_push('transform')
+    draw(
-        gc_translate(t.x,t.y)
+        t.text,t.x,t.y,
-        if t.c<.3 then
+        nil,
-            gc_shear((.3-t.c)*2,0)
+        nil,nil,
-        end
+        t.text:getWidth()*.5,t.text:getHeight()*.5,
-        mStr(t.text,0,-t.font*.7)
+        t.c<.3 and (.3-t.c)*2 or 0,0
-    gc_pop()
+    )
 end
 function textFX.spin(t)
-    gc_push('transform')
+    draw(
-        gc_translate(t.x,t.y)
+        t.text,t.x,t.y,
-        if t.c<.3 then
+        t.c<.3 and (.3-t.c)^2*4 or t.c<.8 and 0 or (t.c-.8)^2*-4,
-            gc_rotate((.3-t.c)^2*4)
+        nil,nil,
-        elseif t.c>.8 then
+        t.text:getWidth()*.5,t.text:getHeight()*.5
-            gc_rotate((t.c-.8)^2*-4)
+    )
-        end
-        mStr(t.text,0,-t.font*.7)
-    gc_pop()
 end
 function textFX.flicker(t)
-    local _,_,_,T=gc_getColor()
+    local _,_,_,T=getColor()
-    gc_setColor(1,1,1,T*(rnd()+.5))
+    setColor(1,1,1,T*(rnd()+.5))
-    mStr(t.text,t.x,t.y-t.font*.7)
+    draw(
+        t.text,t.x,t.y,
+        nil,
+        nil,nil,
+        t.text:getWidth()*.5,t.text:getHeight()*.5
+    )
 end
 function textFX.zoomout(t)
-    gc_push('transform')
+    draw(
-        local k=t.c^.5*.1+1
+        t.text,t.x,t.y,
-        gc_translate(t.x,t.y)
+        nil,
-        gc_scale(k,k)
+        t.c^.5*.1+1,nil,
-        mStr(t.text,0,-t.font*.7)
+        t.text:getWidth()*.5,t.text:getHeight()*.5
-    gc_pop()
+    )
 end
 function textFX.beat(t)
-    gc_push('transform')
+    local k=t.c<.3 and 1.3-t.c^2/.3 or 1
-        gc_translate(t.x,t.y)
+    draw(
-        if t.c<.3 then
+        t.text,t.x,t.y,
-            local k=1.3-t.c^2/.3
+        nil,
-            gc_scale(k,k)
+        k,k,
-        end
+        t.text:getWidth()*.5,t.text:getHeight()*.5
-        mStr(t.text,0,-t.font*.7)
+    )
-    gc_pop()
 end
 function textFX.score(t)
-    local _,_,_,T=gc_getColor()
+    local _,_,_,T=getColor()
-    gc_setColor(1,1,1,T*.5)
+    setColor(1,1,1,T*.5)
-    mStr(t.text,t.x,t.y-t.font*.7-t.c^.2*50)
+    draw(
+        t.text,t.x,t.y-0-t.c^.2*50,
+        nil,
+        nil,nil,
+        t.text:getWidth()*.5,t.text:getHeight()*.5
+    )
 end
 
 local TEXT={}
@@ -83,23 +103,21 @@ function TEXT.clear()
 end
 function TEXT.show(text,x,y,font,style,spd,stop)
     ins(texts,{
-        c=0,                     --Timer
+        c=0,                                                         --Timer
-        text=text,               --String
+        text=gc.newText(getFont(int(font/5)*5 or 40),text),          --String
-        x=x or 0,                --X
+        x=x or 0,                                                    --X
-        y=y or 0,                --Y
+        y=y or 0,                                                    --Y
-        font=int(font/5)*5 or 40,--Font
+        spd=(spd or 1)/60,                                           --Timing speed(1=last 1 sec)
-        spd=(spd or 1)/60,       --Timing speed(1=last 1 sec)
+        stop=stop,                                                   --Stop time(sustained text)
-        stop=stop,               --Stop time(sustained text)
         draw=assert(textFX[style or'appear'],"no text type:"..style),--Draw method
     })
 end
 function TEXT.getText(text,x,y,font,style,spd,stop)--Another version of TEXT.show(), but only return text object, need manual management
     return{
         c=0,
-        text=text,
+        text=gc.newText(getFont(int(font/5)*5 or 40),text),
         x=x or 0,
         y=y or 0,
-        font=int(font/5)*5 or 40,
         spd=(spd or 1)/60,
         stop=stop,
         draw=textFX[style or'appear']or error("unavailable type:"..style),
@@ -129,8 +147,7 @@ function TEXT.draw(list)
     for i=1,#list do
         local t=list[i]
         local p=t.c
-        gc_setColor(1,1,1,p<.2 and p*5 or p<.8 and 1 or 5-p*5)
+        setColor(1,1,1,p<.2 and p*5 or p<.8 and 1 or 5-p*5)
-        FONT.set(t.font)
         t:draw()
     end
 end