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world_of_cow
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MADE GRASS, also cow pov works and cow movement works :D

This commit is contained in:
Rusty Striker 2023-07-26 18:57:39 +03:00
parent da1a25ddfc
commit 02117f4354
4 changed files with 137 additions and 37 deletions
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8
README.md
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@ -9,7 +9,7 @@ Code here is published under the [AGPL-v3](https://www.gnu.org/licenses/agpl-3.0
- Add menu - partially done
- Adjust ambient light
- Allow changing the move/rotation speed(or just a multiplier)
- Create a cow
- Create a cow - IM SO BAD AT IT IM SO SORRY COWS
- Head
- Tail
- Body
@ -18,13 +18,11 @@ Code here is published under the [AGPL-v3](https://www.gnu.org/licenses/agpl-3.0
- Nose
- Eyes
- Allow user control of the cow
- Movement - turn and move - WIP
- Head
- Tail
- Legs? (optional)
- Change camera position to be cow point of view
- Change camera position to be cow point of view - DONE, need to do the sub thing
- Add popping-floating text of funny cow thoughts
- Add multiple objects(that is not the cow)
- Add multiple objects(that is not the cow)(is grass an object?)
- at least 3
- on needs to be metalic
- User controlled light source

97
cow.c
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@ -6,7 +6,7 @@
#include <math.h>
#include <stdio.h>
vec3 headRot;
vec3 headRot = { -30.0, 0.0, 0.0 };
const vec3 headLimit = { 90.0, 90.0 ,90.0 };
vec3 cowPos = { 0.0, 6.0, 0.0 };
@ -20,16 +20,20 @@ float deg2rad(float deg) {
return deg * 3.14 / 180.0;
}
float addAndWrapRot(float rot, float add) {
rot += add;
if(rot > 180.0) { rot -= 360.0; }
else if(rot < -180.0) { rot += 360.0; }
return rot;
}
void cowMove(char c) {
// check for rotations
cowRot += ((c == 'e') - (c == 'q')) * COW_ROT_SPEED;
if(cowRot > 180.0) { cowRot -= 360.0; }
else if(cowRot < -180.0) { cowRot += 360.0; }
printf("rot: %f\n", cowRot);
cowRot = addAndWrapRot(cowRot, ((c == 'e') - (c == 'q')) * COW_ROT_SPEED);
// movement
vec3 dir = vec3_new((c == 'd') - (c == 'a'), 0.0, (c == 'w') - (c == 's'));
vec3 dir = vec3_new((c == 'a') - (c == 'd'), 0.0, (c == 'w') - (c == 's'));
vec3 r = vec3_splat(0.0);
float rot = deg2rad(cowRot);
float rot = -deg2rad(cowRot);
r.z = cosf(rot) * dir.z + sinf(rot) * dir.x;
r.x = -sinf(rot) * dir.z + cosf(rot) * dir.x;
@ -37,30 +41,61 @@ void cowMove(char c) {
glutPostRedisplay();
}
void drawCow() {
void cowHead(char c) {
headRot.z = addAndWrapRot(headRot.z, ((c == 'e') - (c == 'q')) * COW_ROT_SPEED);
headRot.y = addAndWrapRot(headRot.y, ((c == 'a') - (c == 'd')) * COW_ROT_SPEED);
headRot.x = addAndWrapRot(headRot.x, ((c == 's') - (c == 'w')) * COW_ROT_SPEED);
glutPostRedisplay();
}
void drawCow(char cowsPOV) {
glMatrixMode(GL_MODELVIEW);
glEnable(GL_COLOR_MATERIAL);
glPushMatrix();
glPushMatrix(); // cow pos
// Main cow position - as center of cow body
glTranslatef(cowPos.x, cowPos.y, cowPos.z);
glRotatef(cowRot, 0.0, 1.0, 0.0);
// Draw cow body
glPushMatrix();
glPushMatrix(); // cow body scale
glColor3f(0.8,0.4,0.11);
glScalef(1.0, 1.0, 1.5);
glutSolidSphere(4.0, 16, 16);
glPopMatrix();
// head
glPushMatrix();
glTranslatef(0.0, 0.0, 5.0);
glRotatef(headRot.y, 0.0, 1.0, 0.0);
glRotatef(headRot.x, 1.0, 0.0, 0.0);
glTranslatef(0.0, 0.0, 1.0);
glRotatef(headRot.z, 0.0, 0.0 ,1.0);
glutSolidSphere(2.0, 16, 16);
glPopMatrix();
glPopMatrix();
glPopMatrix(); // cow body scale
if(!cowsPOV) {
// head
glPushMatrix(); // head center
glTranslatef(0.0, 1.0, 5.0);
glRotatef(headRot.y, 0.0, 1.0, 0.0);
glRotatef(headRot.x, 1.0, 0.0, 0.0);
glTranslatef(0.0, 0.0, 1.0);
glRotatef(headRot.z, 0.0, 0.0 ,1.0);
glutSolidSphere(2.0, 16, 16);
vec3 ePos = vec3_new(0.7, 0.8, 1.3);
vec3 pPos = vec3_new(0.0, 0.2, 0.5);
glPushMatrix(); // eye 1
glTranslatef(ePos.x, ePos.y, ePos.z);
glColor3f(1.0, 1.0, 1.0);
glutSolidSphere(0.5, 8, 8);
glPushMatrix(); // pupil 1
glTranslatef(pPos.x, pPos.y, pPos.z);
glColor3f(0.0, 0.0, 0.0);
glutSolidSphere(0.1, 8, 8);
glPopMatrix(); // pupil 1
glPopMatrix(); // eye 1
glPushMatrix(); // eye 2
glTranslatef(-ePos.x, ePos.y, ePos.z);
glColor3f(1.0, 1.0, 1.0);
glutSolidSphere(0.5, 8, 8);
glPushMatrix(); // pupil 2
glTranslatef(pPos.x, pPos.y, pPos.z);
glColor3f(0.0, 0.0, 0.0);
glutSolidSphere(0.1, 8, 8);
glPopMatrix(); // pupil 2
glPopMatrix(); // eye 2
glPopMatrix(); // head center
}
glPopMatrix(); // cow pos
glColor3f(1.0, 1.0, 1.0);
glDisable(GL_COLOR_MATERIAL);
}
void onCowKeyboardInput(char key) {
@ -68,6 +103,8 @@ void onCowKeyboardInput(char key) {
case COW_CONTROL_MOVE:
cowMove(key);
break;
case COW_CONTROL_HEAD:
cowHead(key);
default:
break;
}
@ -75,4 +112,20 @@ void onCowKeyboardInput(char key) {
void updateCowControl(enum COW_CONTROL c) {
control = c;
}
void setCameraToCowPOV() {
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// rotate to look at Z+
glRotatef(180.0, 0.0, 1.0, 0.0);
// head
glRotatef(-headRot.z, 0.0, 0.0 ,1.0);
glTranslatef(0.0, 0.0, -1.0);
glRotatef(-headRot.x, 1.0, 0.0, 0.0);
glRotatef(-headRot.y, 0.0, 1.0, 0.0);
glTranslatef(0.0, 0.0, -5.0);
// body
glTranslatef(-cowPos.x, -cowPos.y, -cowPos.z);
glRotatef(-cowRot, 0.0, 1.0, 0.0);
}

3
cow.h
View File

@ -11,8 +11,9 @@ enum COW_CONTROL {
COW_CONTROL_NONE
};
void drawCow();
void drawCow(char cowsPOV);
void onCowKeyboardInput(char key);
void updateCowControl(enum COW_CONTROL control);
void setCameraToCowPOV();
#endif

66
mmn_17.c
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@ -5,6 +5,7 @@
#include <GL/glu.h>
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include "ui.h"
#include "grass_texture_color.h"
#include "help.h"
@ -15,21 +16,48 @@
// Camera rotation and stuff
float camRadius = 40.0;
vec3 camCenter = { 0.0, 0.0, 0.0 };
vec3 camRot = { -PI * 0.125, 0.0, 0.0 };
vec3 camRot = { -PI * 0.25, PI, 0.0 };
struct {
unsigned char lockYMovement: 1;
unsigned char showHelp: 1;
unsigned char cowsPOV: 1;
GLenum textureFilter;
} settings = {
0, 0, GL_NEAREST,
0, 0, 0, GL_NEAREST,
};
struct {
int main;
int cowControl;
int filters;
} menus; // to simply hold the menues in a labed manner
GLuint grassList = -1;
void generateGrassVertexList() {
grassList = glGenLists(1);
glNewList(grassList, GL_COMPILE);
glDisable(GL_CULL_FACE);
for(float x = -50.0; x < 50.0; x += 1.0) {
for(float z = -50.0; z < 50.0; z += 1.0) {
glPushMatrix();
glTranslatef(x, 0.0, z);
glRotatef(rand() % 360, 0.0, 1.0, 0.0);
glBegin(GL_TRIANGLES);
glVertex3f(0.0, 0.0, 0.0);
glVertex3f(0.5, 0.0, 0.0);
glVertex3f(0.0, 1.5, 0.0);
glVertex3f(0.0, 0.0, 0.0);
glVertex3f(0.0, 0.0, 0.5);
glVertex3f(0.0, 1.5, 0.0);
glEnd();
glPopMatrix();
}
}
glEnable(GL_CULL_FACE);
glEndList();
}
vec3 rotateByCameraRotation(vec3 v) {
vec3 r;
// rotate along the x axis(yz plane)
@ -119,17 +147,22 @@ void drawWorld(void) {
GLdouble wWidth = (GLdouble) glutGet(GLUT_WINDOW_WIDTH);
GLdouble wHeight = (GLdouble) glutGet(GLUT_WINDOW_HEIGHT);
// Calculate current camera position from rotation
vec3 cp = vec3_new(0.0, 0.0, camRadius);
cp = rotateByCameraRotation(cp);
cp = vec3_add(cp, camCenter);
vec3 up = rotateByCameraRotation(vec3_new(0.0, 1.0, 0.0));
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(cp.x, cp.y, cp.z, camCenter.x, camCenter.y, camCenter.z, up.x, up.y, up.z);
if(settings.cowsPOV) {
setCameraToCowPOV();
}
else {
vec3 cp = vec3_new(0.0, 0.0, camRadius);
cp = rotateByCameraRotation(cp);
cp = vec3_add(cp, camCenter);
vec3 up = rotateByCameraRotation(vec3_new(0.0, 1.0, 0.0));
gluLookAt(cp.x, cp.y, cp.z, camCenter.x, camCenter.y, camCenter.z, up.x, up.y, up.z);
}
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(90, wWidth / wHeight , 1.0, 500.0);
gluPerspective(90, wWidth / wHeight , 0.5, 500.0);
// Lights
glEnable(GL_LIGHTING);
// Ambient light
@ -144,7 +177,7 @@ void drawWorld(void) {
glLightfv(GL_LIGHT0, GL_DIFFUSE, lightColor);
glLightfv(GL_LIGHT0, GL_SPECULAR, lightColor);
// World
drawCow();
drawCow(settings.cowsPOV);
// Ground
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, settings.textureFilter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, settings.textureFilter);
@ -159,6 +192,16 @@ void drawWorld(void) {
glTexCoord2f(1.0, 0.0); glVertex3f(50.0, 0.0, -50.0);
glEnd();
glDisable(GL_TEXTURE_2D);
// Add a simple cube to see where the cow was originally facing
glPushMatrix();
glTranslatef(0.0, 10.0, 50.0);
glEnable(GL_COLOR_MATERIAL);
glColor3f(1.0, 1.0, 1.0);
glutSolidCube(20.0);
glPopMatrix();
glColor3f(0.1, 0.3, 0.0);
glCallList(grassList);
glDisable(GL_COLOR_MATERIAL);
}
void display(void) {
@ -272,6 +315,10 @@ void onMenuItem(int item) {
settings.lockYMovement ^= 1;
glutChangeToMenuEntry(3, settings.lockYMovement ? "Unlock Y position" : "Lock Y position", 0);
break;
case 1: // cow pov
settings.cowsPOV ^= 1;
glutPostRedisplay();
break;
case 2: // Show help
settings.showHelp ^= 1;
glutPostRedisplay();
@ -339,6 +386,7 @@ int main(int argc, char** argv) {
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
generateGrassVertexList();
glutMainLoop();
return 0;