diff options
Diffstat (limited to 'engine/hp_bar.asm')
| -rwxr-xr-x | engine/hp_bar.asm | 44 |
1 files changed, 23 insertions, 21 deletions
diff --git a/engine/hp_bar.asm b/engine/hp_bar.asm index 333b0b90..221bd7a9 100755 --- a/engine/hp_bar.asm +++ b/engine/hp_bar.asm @@ -1,9 +1,9 @@ -HPBarLength: ; f9dc (3:79dc) +HPBarLength: call GetPredefRegisters ; calculates bc * 48 / de, the number of pixels the HP bar has ; the result is always at least 1 -GetHPBarLength: ; f9df (3:79df) +GetHPBarLength: push hl xor a ld hl, H_MULTIPLICAND @@ -45,7 +45,7 @@ GetHPBarLength: ; f9df (3:79df) ret ; predef $48 -UpdateHPBar: ; fa1d (3:7a1d) +UpdateHPBar: UpdateHPBar2: push hl ld hl, wHPBarOldHP @@ -87,6 +87,7 @@ UpdateHPBar2: call UpdateHPBar_CompareNewHPToOldHP jr z, .animateHPBarDone jr nc, .HPIncrease +; HP decrease dec bc ; subtract 1 HP ld a, c ld [wHPBarNewHP], a @@ -95,7 +96,7 @@ UpdateHPBar2: call UpdateHPBar_CalcOldNewHPBarPixels ld a, e sub d ; calc pixel difference - jr .asm_fa7e + jr .ok .HPIncrease inc bc ; add 1 HP ld a, c @@ -105,7 +106,7 @@ UpdateHPBar2: call UpdateHPBar_CalcOldNewHPBarPixels ld a, d sub e ; calc pixel difference -.asm_fa7e +.ok call UpdateHPBar_PrintHPNumber and a jr z, .noPixelDifference @@ -136,14 +137,14 @@ UpdateHPBar2: ; animates the HP bar going up or down for (a) ticks (two waiting frames each) ; stops prematurely if bar is filled up ; e: current health (in pixels) to start with -UpdateHPBar_AnimateHPBar: ; fab1 (3:7ab1) +UpdateHPBar_AnimateHPBar: push hl .barAnimationLoop push af push de ld d, $6 call DrawHPBar - ld c, $2 + ld c, 2 call DelayFrames pop de ld a, [wHPBarDelta] ; +1 or -1 @@ -162,7 +163,7 @@ UpdateHPBar_AnimateHPBar: ; fab1 (3:7ab1) ret ; compares old HP and new HP and sets c and z flags accordingly -UpdateHPBar_CompareNewHPToOldHP: ; fad1 (3:7ad1) +UpdateHPBar_CompareNewHPToOldHP: ld a, d sub b ret nz @@ -171,7 +172,7 @@ UpdateHPBar_CompareNewHPToOldHP: ; fad1 (3:7ad1) ret ; calcs HP difference between bc and de (into de) -UpdateHPBar_CalcHPDifference: ; fad7 (3:7ad7) +UpdateHPBar_CalcHPDifference: ld a, d sub b jr c, .oldHPGreater @@ -200,38 +201,39 @@ UpdateHPBar_CalcHPDifference: ; fad7 (3:7ad7) ld de, $0 ret -UpdateHPBar_PrintHPNumber: ; faf5 (3:7af5) +UpdateHPBar_PrintHPNumber: push af push de ld a, [wHPBarType] and a - jr z, .asm_fb2d + jr z, .done ; don't print number in enemy HUD +; convert from little-endian to big-endian for PrintNumber ld a, [wHPBarOldHP] - ld [wcef1], a - ld a, [wHPBarOldHP+1] - ld [wcef0], a + ld [wHPBarTempHP + 1], a + ld a, [wHPBarOldHP + 1] + ld [wHPBarTempHP], a push hl ld a, [hFlags_0xFFF6] bit 0, a jr z, .asm_fb15 ld de, $9 - jr .asm_fb18 + jr .next .asm_fb15 ld de, $15 -.asm_fb18 +.next add hl, de push hl - ld a, $7f + ld a, " " ld [hli], a ld [hli], a ld [hli], a pop hl - ld de, wcef0 - ld bc, $203 + ld de, wHPBarTempHP + lb bc, 2, 3 call PrintNumber call DelayFrame pop hl -.asm_fb2d +.done pop de pop af ret @@ -239,7 +241,7 @@ UpdateHPBar_PrintHPNumber: ; faf5 (3:7af5) ; calcs number of HP bar pixels for old and new HP value ; d: new pixels ; e: old pixels -UpdateHPBar_CalcOldNewHPBarPixels: ; fb30 (3:7b30) +UpdateHPBar_CalcOldNewHPBarPixels: push hl ld hl, wHPBarMaxHP ld a, [hli] ; max HP into de |