76 lines
1.2 KiB
C++
76 lines
1.2 KiB
C++
#define _USE_MATH_DEFINES
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#include <cmath>
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#include "Enemy.h"
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#include "Model.h"
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#include <iostream>
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Enemy::Enemy(const std::string &fileName,
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const Vec3f &position,
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Vec3f &rotation,
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const float &scale)
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{
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model = Model::load(fileName);
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this->position = position;
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this->rotation = rotation;
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this->scale = scale;
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this->canCollide = true;
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target = position;
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speed = 1;
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radius = 20;
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hasTarget = false;
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}
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Enemy::~Enemy()
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{
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if (model)
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Model::unload(model);
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}
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void Enemy::draw()
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{
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Entity::draw();
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glPushMatrix();
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glTranslatef(position.x, position.y, position.z);
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glBegin(GL_LINE_LOOP);
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for (int i = 0; i < 360; i++)
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{
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//convert degrees into radians
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float degInRad = i*(M_PI / 180.0);
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glVertex3f(cos(degInRad)*radius, 1*scale,sin(degInRad)*radius);
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}
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glEnd();
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glPopMatrix();
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}
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void Enemy::update(float delta)
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{
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if (hasTarget)
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{
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//just 2d walking
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float dx, dz, length;
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dx = target.x - position.x;
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dz = target.z - position.z;
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length = sqrt(dx*dx + dz*dz);
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if (length > 0.03)
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{
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dx /= length;
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dz /= length;
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dx *= speed*delta;
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dz *= speed*delta;
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position.x += dx;
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position.z += dz;
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}
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rotation.y = atan2f(dx, dz) * 180 / M_PI;
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}
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}
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