101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
//
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// Created by bruno on 6.9.2025.
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//
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#include "turret.h"
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#include "tile.h"
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#include "../util/audio.h"
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#include "../entity/entity.h"
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const uint16_t AmmoDamages[ITEMREGISTRY_SIZE] = {
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[IRON_INGOT] = 2,
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[GOLD_INGOT] = 1,
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[SILVER_INGOT] = 3,
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[PLATINUM_INGOT] = 5,
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[IRON_BULLET] = 20,
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[GOLD_BULLET] = 10,
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[SILVER_BULLET] = 30,
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[PLATINUM_BULLET] = 50,
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};
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void updateTurret(Tile *tile) {
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ItemOnBelt *inItem = &tile->items[TURRET_AMMO_INPUT_SLOT];
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Item inItemType = ItemRegistry[inItem->type];
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uint16_t damage = AmmoDamages[inItem->type];
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// Reduce cooldown (miscVal) if above 0
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if (tile->miscVal > 0) {
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tile->miscVal--;
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}
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// If there's no ammo or it's invalid, stop the sound and return
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if (damage == 0) {
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if (tile->audioCh < NUM_SYNTH_VOICES) {
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audioData.synthVoices[tile->audioCh].volume = 0;
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}
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if (animationStep % (TileRegistry[tile->type].animation.frameCount - 1) == 0) {
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tile->fixedFrame = 1;
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}
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return;
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}
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// Search for a target entity
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bool foundEnt = false;
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for (int i = 0; i < entities.activeCount; i++) {
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Entity *ent = &entities.entities[i];
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int dx = abs(ent->renderRect.x - (tile->rect.x * TILE_SIZE));
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int dy = abs(ent->renderRect.y - (tile->rect.y * TILE_SIZE));
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int d = sqrt(dx * dx + dy * dy);
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if (d <= (TILE_SIZE * 8)) {
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foundEnt = true;
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if (tile->miscVal == 0) {
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// Do damage and consume ammo
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ent->health -= damage;
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inItem->type = 0;
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// Get or reuse audio channel
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if (tile->audioCh >= NUM_SYNTH_VOICES) {
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tile->audioCh = getAvailableChannel();
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}
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if (tile->audioCh < NUM_SYNTH_VOICES) {
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SynthVoice *voice = &audioData.synthVoices[tile->audioCh];
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voice->volume = 255;
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voice->phase = 0;
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voice->sourceRect.x = tile->rect.x * TILE_SIZE;
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voice->sourceRect.y = tile->rect.y * TILE_SIZE;
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voice->waveform = WAVE_TRIANGLE;
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voice->frequency = 400;
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}
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tile->fixedFrame = 0;
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tile->miscVal = 20; // Cooldown (ticks) until next fire
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}
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break; // Only shoot one entity
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}
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}
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// No entity found? Fade sound out
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if (!foundEnt && tile->audioCh < NUM_SYNTH_VOICES) {
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SynthVoice *voice = &audioData.synthVoices[tile->audioCh];
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if (voice->volume > 0) {
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voice->volume--;
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}
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if (animationStep % (TileRegistry[tile->type].animation.frameCount - 1) == 0) {
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tile->fixedFrame = 1;
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}
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}
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// Lower frequency for pitch effect if it's still playing
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if (tile->audioCh < NUM_SYNTH_VOICES) {
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SynthVoice *voice = &audioData.synthVoices[tile->audioCh];
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if (voice->frequency > 80) {
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voice->frequency--;
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}
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}
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}
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