Use pokecrystal's sine_table macro

A circle has 65536 "degrees", so 32768 "degrees" = pi radians = half a circle

engine/battle/battle_transition.asm

@@ -669,10 +669,7 @@ WipeLYOverrides:
 	ret
 
 StartTrainerBattle_DrawSineWave:
-	calc_sine_wave .SineWave
-
-.SineWave:
-	sine_table 256
+	calc_sine_wave
 
 StartTrainerBattle_ZoomToBlack:
 	farcall Function55a1

engine/battle_anims/functions.asm

@@ -4151,4 +4151,4 @@ BattleAnim_AbsCosinePrecise:
 	ret
 
 BattleAnimSineWave:
-	sine_table 256
+	sine_table 32

engine/gfx/sprites.asm

@@ -545,10 +545,7 @@ Sprites_Cosine:
 	; fallthrough
 Sprites_Sine:
 ; a = d * sin(a * pi/32)
-	calc_sine_wave .SineWave
-
-.SineWave:
-	sine_table 256
+	calc_sine_wave
 
 AnimateEndOfExpBar:
 	ldh a, [hSGB]

engine/math/sine.asm

@@ -1,7 +1,4 @@
 _Sine::
-; a = d * sin(e * pi/256)
+; a = d * sin(e * pi/32)
 	ld a, e
-	calc_sine_wave .SineWave
-
-.SineWave:
-	sine_table $100
+	calc_sine_wave

macros/data.asm

@@ -124,10 +124,10 @@ endr
 ENDM
 
 sine_table: MACRO
-; \1: amplitude
+; \1 samples of sin(x) from x=0 to x<32768 (pi radians)
 x = 0
-rept 32
+rept \1
 	dw (sin(x) + (sin(x) & $ff)) >> 8 ; round up
-x = x + (\1) * $40000
+x = x + DIV(32768, \1); a circle has 65536 "degrees"
 endr
 ENDM