96 lines
3.0 KiB
C++
96 lines
3.0 KiB
C++
#include "Explosions.h"
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#include "api.h"
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#define MAX_EXPLOSIONS 5
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#define PIXELS_PER_EXPLOSION 24
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#define PARTICLES_PER_EXPLOSION 4
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struct Particle {
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Point pos;
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Point dir;
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float scale;
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float angle;
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};
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struct Explosion {
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Point pos;
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Point dir;
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float scale;
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float angle;
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int ttl;
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};
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Explosion explosions[MAX_EXPLOSIONS][PIXELS_PER_EXPLOSION];
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Particle particles[MAX_EXPLOSIONS][PARTICLES_PER_EXPLOSION];
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Explosions::Explosions() {
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for (int i = 0; i < MAX_EXPLOSIONS; i++) {
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explosions[i][0].ttl = 0;
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}
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RegisterMessage("GenerateExplosion", this);
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}
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void Explosions::Update() {
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for (int i = 0; i < MAX_EXPLOSIONS; i++) {
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if (explosions[i][0].ttl > 0) {
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for (int j = 0; j < PIXELS_PER_EXPLOSION; j++) {
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explosions[i][j].pos.x += explosions[i][j].dir.x;
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explosions[i][j].pos.y += explosions[i][j].dir.y;
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//SetColor(128+rand()%128, 128+rand()%128, 128+rand()%128);
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//DrawPoint(explosions[i][j].pos.x, explosions[i][j].pos.y);
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Tint(128 + rand() % 128, 128 + rand() % 128, 128 + rand() % 128);
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DrawEx(explosions[i][j].pos.x, explosions[i][j].pos.y, 3, 85, 1, 1, explosions[i][j].scale, explosions[i][j].angle);
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if (explosions[i][j].scale > 1) explosions[i][j].scale -= 0.01f;
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explosions[i][j].angle += explosions[i][j].dir.x + explosions[i][j].dir.y;
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}
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explosions[i][0].ttl--;
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SetBlend(BlendAdd);
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SetAlpha(128);
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for (int j = 0; j < 4; j++) DrawEx(particles[i][j].pos.x, particles[i][j].pos.y, 0, 85, 10, 10, particles[i][j].scale, particles[i][j].angle);
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Tint(255, 128, 0);
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SetAlpha(64);
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for (int j = 0; j < 4; j++) DrawEx(particles[i][j].pos.x, particles[i][j].pos.y, 0, 85, 10, 10, particles[i][j].scale * 2, particles[i][j].angle);
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SetBlend(BlendBlend);
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Tint(255, 255, 255);
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SetAlpha(255);
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for (int j = 0; j < 4; j++) {
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if (particles[i][j].scale > 0.0f) {
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particles[i][j].pos.x += particles[i][j].dir.x;
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particles[i][j].pos.y += particles[i][j].dir.y;
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particles[i][j].scale -= 0.1f;
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}
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}
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}
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}
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}
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void GenerateExplosion(int x, int y) {
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for (int i = 0; i < MAX_EXPLOSIONS; i++) {
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if (explosions[i][0].ttl == 0) {
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explosions[i][0].ttl = 60;
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for (int j = 0; j < PIXELS_PER_EXPLOSION; j++) {
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explosions[i][j].pos.x = x;
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explosions[i][j].pos.y = y;
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explosions[i][j].dir.x = ((rand() % 200) - 100)*0.1f;
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explosions[i][j].dir.y = ((rand() % 200) - 100)*0.1f;
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explosions[i][j].scale = 1 + (rand() % 100)*0.04f;
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explosions[i][j].angle = rand() % 360;
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}
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for (int j = 0; j < PARTICLES_PER_EXPLOSION; j++) {
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particles[i][j].pos.x = x;
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particles[i][j].pos.y = y;
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particles[i][j].dir.x = ((rand() % 200) - 100)*0.02f;
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particles[i][j].dir.y = ((rand() % 200) - 100)*0.02f;
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particles[i][j].scale = 4;
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particles[i][j].angle = rand() % 360;
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}
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}
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}
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}
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void Explosions::ProcessMessage(const char* msg) {
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if (msg == "GenerateExplosion") {
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int* params = GetMessageParams();
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GenerateExplosion(params[0], params[1]);
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}
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}
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