78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
#include <GL/freeglut_std.h>
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#include <GL/glut.h>
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#include <GL/gl.h>
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#include "cow.h"
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#include "vec.h"
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#include <math.h>
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#include <stdio.h>
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vec3 headRot;
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const vec3 headLimit = { 90.0, 90.0 ,90.0 };
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vec3 cowPos = { 0.0, 6.0, 0.0 };
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float cowRot = 0.0; // rotation along the Y axis
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const float COW_ROT_SPEED = 5.0;
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const float COW_MOVE_SPEED = 1.0;
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enum COW_CONTROL control;
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float deg2rad(float deg) {
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return deg * 3.14 / 180.0;
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}
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void cowMove(char c) {
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// check for rotations
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cowRot += ((c == 'e') - (c == 'q')) * COW_ROT_SPEED;
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if(cowRot > 180.0) { cowRot -= 360.0; }
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else if(cowRot < -180.0) { cowRot += 360.0; }
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printf("rot: %f\n", cowRot);
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// movement
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vec3 dir = vec3_new((c == 'd') - (c == 'a'), 0.0, (c == 'w') - (c == 's'));
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vec3 r = vec3_splat(0.0);
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float rot = deg2rad(cowRot);
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r.z = cosf(rot) * dir.z + sinf(rot) * dir.x;
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r.x = -sinf(rot) * dir.z + cosf(rot) * dir.x;
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cowPos = vec3_add(cowPos, vec3_mult(r, COW_MOVE_SPEED));
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glutPostRedisplay();
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}
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void drawCow() {
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glMatrixMode(GL_MODELVIEW);
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glEnable(GL_COLOR_MATERIAL);
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glPushMatrix();
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// Main cow position - as center of cow body
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glTranslatef(cowPos.x, cowPos.y, cowPos.z);
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glRotatef(cowRot, 0.0, 1.0, 0.0);
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// Draw cow body
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glPushMatrix();
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glColor3f(0.8,0.4,0.11);
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glScalef(1.0, 1.0, 1.5);
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glutSolidSphere(4.0, 16, 16);
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glPopMatrix();
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// head
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glPushMatrix();
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glTranslatef(0.0, 0.0, 5.0);
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glRotatef(headRot.y, 0.0, 1.0, 0.0);
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glRotatef(headRot.x, 1.0, 0.0, 0.0);
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glTranslatef(0.0, 0.0, 1.0);
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glRotatef(headRot.z, 0.0, 0.0 ,1.0);
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glutSolidSphere(2.0, 16, 16);
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glPopMatrix();
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glPopMatrix();
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glDisable(GL_COLOR_MATERIAL);
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}
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void onCowKeyboardInput(char key) {
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switch(control) {
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case COW_CONTROL_MOVE:
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cowMove(key);
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break;
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default:
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break;
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}
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}
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void updateCowControl(enum COW_CONTROL c) {
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control = c;
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} |