79 lines
2.7 KiB
C++
79 lines
2.7 KiB
C++
#include "renderer_simple.hpp"
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void endofthejedi::RendererSimple::drawCircle(float x, float y, float radius,
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float r, float g, float b,
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int numSides) {
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glBegin(GL_TRIANGLE_FAN);
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glColor3f(r, g, b);
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glVertex2f(x, y); // center of circle
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for (int i = 0; i <= numSides; i++) {
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glVertex2f(x + (radius * cos(i * 2 * M_PI / numSides)),
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y + (radius * sin(i * 2 * M_PI / numSides)));
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}
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glEnd();
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}
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void endofthejedi::RendererSimple::drawShip(const glm::vec2 &pos,
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float radius) {
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// std::cout<<"draw ship @ " << pos.x << ", " << pos.y << std::endl;
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glm::vec3 color = glm::vec3(0.2, 1.0, 0.3);
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drawCircle(pos.x, pos.y, radius, color.x, color.y, color.z, 12);
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}
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void endofthejedi::RendererSimple::drawPlanet(const glm::vec2 &pos,
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float radius) {
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glm::vec3 color = glm::vec3(0.7, 0.1, 0.2);
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// std::cout<<"draw planet @ " << pos.x << ", " << pos.y << std::endl;
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drawCircle(pos.x, pos.y, radius, color.x, color.y, color.z, 32);
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}
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void endofthejedi::RendererSimple::drawMissile(const glm::vec2 &pos) {
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glm::vec3 color = glm::vec3(1.0, 1.0, 0.3);
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drawCircle(pos.x, pos.y, 0.01, color.x, color.y, color.z, 6);
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}
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void endofthejedi::RendererSimple::drawTrace(const game::Trace *trace) {
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for (const game::Trace::TracePoint &p : trace->points) {
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glm::vec3 color = glm::vec3(0.1, 0.3, 1.0) / (1.0f + 500.0f * p.speed);
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drawCircle(p.position.x, p.position.y, 0.005, color.x, color.y, color.z,
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3);
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}
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}
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void endofthejedi::RendererSimple::drawExplosion(
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const game::Explosion *explosion) {
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// TODO: transparent
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// TODO: with glow in the middle
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float r = explosion->maxRadius * (explosion->age / explosion->maxAge);
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// TODO: transparency?
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glm::vec3 color = glm::vec3(1.0, 0.9, 0.1);
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drawCircle(explosion->position.x, explosion->position.y, r, color.x,
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color.y, color.z, 64);
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}
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void endofthejedi::RendererSimple::render(const game::State *state) {
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for (const game::Planet *planet : state->planets) {
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drawPlanet(planet->position, planet->radius);
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}
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for (const game::Trace *trace : state->traces) {
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drawTrace(trace);
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}
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for (const game::Explosion *explosion : state->explosions) {
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drawExplosion(explosion);
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}
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for (const game::Ship *ship : state->ships) {
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drawShip(ship->position, ship->radius);
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}
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for (const game::Player *player : state->players) {
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for (const game::Missile *missile : player->missiles) {
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drawMissile(missile->position);
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}
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}
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}
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