SpaceTimeInvaders/Object.cpp at master · ThrostGunnulf/SpaceTimeInvaders · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
#include "Object.hxx"

////
// Object
Object::Object(Model* _model, GLfloat _x, GLfloat _y, GLfloat _z) : x(_x), y(_y), z(_z), sx(1), sy(1), sz(1), velX(0), velY(0), velZ(0), angle(0), dangle(0), ax(0), ay(0), az(0)
{
    model = _model;

    if(model != NULL)
    {
        width = model->width;
        height = model->height;
    }
}

void Object::update(GLfloat delta)
{
	angle += dangle;
	normalizeAngle();

	translate(velX, velY, velZ);

    glPushMatrix();
		glTranslatef(x, y, z);
		glRotatef(angle, ax, ay, az);
        glScalef(sx, sy, sz);
		model->draw();
    glPopMatrix();

//#define DRAW_BBS  //Uncomment this to display bounding boxes
#ifdef DRAW_BBS
    glPushMatrix();
    glScalef(sx, sy, sz);
    glTranslatef(0, 0, 1);
    drawBBox(x, y);
    glPopMatrix();
#endif
}

bool Object::checkCollision(Object* bullet)
{
    updateBBox();

    if(checkPointInclusion(bullet->x1, bullet->y1)
            || checkPointInclusion(bullet->x2, bullet->y2)
            || checkPointInclusion(bullet->x3, bullet->y3)
            || checkPointInclusion(bullet->x4, bullet->y4))
        return true;

    return false;
}

bool Object::checkPointInclusion(GLfloat bulletX, GLfloat bulletY)
{
    if(bulletX >= x1 && bulletX <= x3)
    {
        if(bulletY >= y2 && bulletY <= y1)
            return true;
    }

    return false;
}


void Object::translate(GLfloat dx, GLfloat dy, GLfloat dz)
{
	x += dx;
	y += dy;
	z += dz;
}

void Object::setRotation(GLfloat vel, GLfloat _ax, GLfloat _ay, GLfloat _az)
{
	dangle = vel;
	ax = _ax;
	ay = _ay;
	az = _az;
}

void Object::setVelocity(GLfloat _velX, GLfloat _velY, GLfloat _velZ)
{
	velX = _velX;
	velY = _velY;
	velZ = _velZ;
}

void Object::normalizeAngle()
{
	while(angle > 360)
		angle -= 360;

	while(angle < 0)
		angle += 360;
}

void Object::setScale(GLfloat scaleX, GLfloat scaleY, GLfloat scaleZ)
{
	sx = scaleX;
	sy = scaleY;
    sz = scaleZ;

    width = model->width * sx;
    height = model->height * sy;
}

void Object::updateBBox()
{
    //std::cout <<"(X, Y) = ("<< x <<", "<< y <<")\n";

    x1 = x2 = x - (width / 2);
    x3 = x4 = x + (width / 2);
    y1 = y4 = y + height;
    y2 = y3 = y;
}

void Object::drawBBox(GLfloat _x, GLfloat _y)
{
    updateBBox();

    glBegin(GL_QUADS);
    {
        glVertex3f(x1, y1, 0);
        glVertex3f(x2, y2, 0);
        glVertex3f(x3, y3, 0);
        glVertex3f(x4, y4, 0);
    }
    glEnd();
}

GLfloat Object::getVelX()
{
    return velX;
}