djinn_attacks.c

The Mercury, Jupiter, Venus and Mars Djinn attacks. Part of effect.c, the battle effect object, compiled only through it.

Functions

Graphics_TransposeCopy

void Graphics_TransposeCopy(const u8 *src, u8 *dst, s32 w, s32 h)

Copies a w x h byte picture into an h x w one turned 90 degrees clockwise: the top row of src becomes the right column of dst.

Called twice by BattleFx_RunMercury, to lay its blue flames on their side. Writes only dst.

Used by BattleFx_RunMercury.

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BattleFx_RunMercury

void BattleFx_RunMercury(struct BattleEffectArgument *effect)

Mercury Djinni flames: the small Mercury Djinni spirals around (96, 60) and fires five blue flames to the left; each flame shatters into 32 motes after 5 frames, hitting every target.

Abilities: Mercury (kind 251).

work->particles 0 to 4 hold the flames, variant -1 until launched and then counting the frames since; Ram_MapCellBuffer takes the blue flame sheet before it is turned. Sets work->shakeFrames as each flame shatters, and ends with the transfer callback removed, the blitters freed and the canvas layer closed.

effect: the targets.

Used by gBattleFx_EffectHandlers.

Line 78

BattleFx_RunJupiter

void BattleFx_RunJupiter(struct BattleEffectArgument *effect)

Jupiter Djinni fall: the small Jupiter Djinni spirals while eight flameballs fall from the top right to the bottom left, 4 frames apart; each shatters into 32 motes below line 95, hitting every target.

Abilities: Jupiter (kind 253).

work->particles holds the flameballs. Copies the Djinni's palette over the first 128 bytes of BG palette RAM, writes REG_BLDALPHA, sets work->shakeFrames as each ball lands, and ends with the transfer callback removed, the blitters freed and the canvas layer closed.

effect: the targets.

Used by gBattleFx_EffectHandlers.

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Resource_LoadAndDecompress

void Resource_LoadAndDecompress(s32 id, void *dst, s32 skipPalette, s32 copyPalette)

Decompresses a resource whose first 128 bytes may be a palette.

Called by nearly every effect to load its pictures. Writes dst and, with copyPalette, the first 128 bytes of BG palette RAM.

id: the resource. dst: receives the decompressed data. skipPalette: the resource starts with a palette to skip. copyPalette: copy that palette to the start of background palette RAM.

Used by BattleFx_RunAnnihilation, BattleFx_RunAtalanta, BattleFx_RunBeamSequence, BattleFx_RunBladeRain, BattleFx_RunBolt, BattleFx_RunBoreas, BattleFx_RunBreak, BattleFx_RunBurstScene, BattleFx_RunBurstShower, BattleFx_RunCastingImpact, BattleFx_RunCybele, BattleFx_RunDeathPlunge, BattleFx_RunDjinnHeal, BattleFx_RunDjinniEntrance, BattleFx_RunDouse, BattleFx_RunDragonCloud, BattleFx_RunDrain, BattleFx_RunElementBurst, BattleFx_RunElementPillar, BattleFx_RunEruption, BattleFx_RunFire, BattleFx_RunFlare, BattleFx_RunFlashingStrike, BattleFx_RunFrost, BattleFx_RunGaia, BattleFx_RunGround, BattleFx_RunGrowingColumns, BattleFx_RunHail, BattleFx_RunHealingMotes, BattleFx_RunHelmSplitter, BattleFx_RunIce, BattleFx_RunImpactBurst, BattleFx_RunJudgment, BattleFx_RunJupiter, BattleFx_RunKirin, BattleFx_RunMars, BattleFx_RunMercury, BattleFx_RunMoteFountain, BattleFx_RunNeptune, BattleFx_RunParticleStreams and 30 more.

Line 337

BattleFx_RunVenus

void BattleFx_RunVenus(struct BattleEffectArgument *effect)

Venus Djinni columns: the small Venus Djinni sways while ten columns of flame in its colours rise from the ground one after another, each bursting into motes and hitting every target.

Abilities: Venus (kind 250).

work->particles holds the columns. Copies the Djinni's palette over the first 128 bytes of BG palette RAM, writes REG_BLDALPHA, sets work->shakeFrames as each column appears, and ends with the transfer callback removed, the blitters freed and the canvas layer closed.

effect: the targets.

Used by gBattleFx_EffectHandlers.

Line 366

BattleFx_RunMars

void BattleFx_RunMars(struct BattleEffectArgument *effect)

Mars Djinni flames: a glowing orb flares, the small Mars Djinni dives to the ground, and nine flames erupt in a row while embers rise.

Abilities: Mars (kind 252).

The scene runs for 112 frames:

  0 to 23    the orb flares
  20 to 31   the Djinni appears, then dives from frame 24
  32         it strikes: the screen shakes and the flames start erupting
  38         every target is hit
  40 on      the embers rise, 16 more every 2 frames

work->particles holds the nine flames, PARTICLES their 144 embers. The BG palette's first 128 bytes change three times: the glow orb's at the start, the Djinni's on frame 20 and the ember streak's on frame 32, when the streak sheet replaces the Djinni in work->sheet. Sets work->shakeFrames on the strike, and ends with the transfer callback removed, the blitters freed and the canvas layer closed.

effect: the targets.

Used by gBattleFx_EffectHandlers.

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