103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
#include <GL/gl.h>
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#include <math.h>
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#include <zoom/render.h>
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#include <zoom/player.h>
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#include <zoom/level.h>
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#include <zoom/texture.h>
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#include <neofx/math.h>
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extern PLAYER player;
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extern LEVEL level;
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extern GLuint sphere;
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extern LIGHT light;
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void RenderWall(WALL w, GLuint *textures) {
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int i;
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float d, s, t;
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VECTOR v, v1, v2;
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VERTEX p;
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glBindTexture(GL_TEXTURE_2D, textures[w.texture]);
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d = VectorDot(w.normal, VectorSub(w.vertices[0], light.pos));
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if(d >= 0) {
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glActiveTexture(GL_TEXTURE0);
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glDisable(GL_TEXTURE_2D);
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glBegin(GL_TRIANGLES);
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for(i = 0; i < 3; i++) {
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glMultiTexCoord2fv(GL_TEXTURE1, (GLfloat*)&w.texcoords[i]);
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glVertex3fv((GLfloat*)&w.vertices[i]);
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}
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glEnd();
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glEnable(GL_TEXTURE_2D);
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glActiveTexture(GL_TEXTURE1);
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return;
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}
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p = VectorAdd(light.pos, VectorMul(w.normal, d));
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v1 = VectorNormalize(VectorSub(w.vertices[0], w.vertices[1]));
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v2 = VectorCross(v1, w.normal);
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glBegin(GL_TRIANGLES);
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glNormal3fv((GLfloat*)&w.normal);
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for(i = 0; i < 3; i++) {
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v = VectorSub(w.vertices[i], p);
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s = VectorDot(v, v1)*0.005 / d + 0.5;
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t = VectorDot(v, v2)*0.005 / d + 0.5;
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glMultiTexCoord2f(GL_TEXTURE0, s, t);
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glMultiTexCoord2fv(GL_TEXTURE1, (GLfloat*)&w.texcoords[i]);
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glVertex3fv((GLfloat*)&w.vertices[i]);
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}
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glEnd();
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}
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void Render() {
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//GLfloat light_position[] = { 0.0, 0.0, 0.0, 1.0 };
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//GLfloat light_emission[] = {1.0, 1.0, 1.0, 1.0};
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GLfloat std_emission[] = {0.0, 0.0, 0.0, 1.0};
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MATRIX rotate = {
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player.rotycos, 0.0, -player.rotysin, 0.0,
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0.0, 1.0, 0.0, 0.0,
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player.rotysin, 0.0, player.rotycos, 0.0,
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0.0, 0.0, 0.0, 1.0
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};
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COLOR color_light = {1.0, 1.0, 1.0};
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COLOR color_ambient = {0.1, 0.1, 0.1};
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glLoadIdentity();
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glRotatef(player.rotx, 1.0, 0.0, 0.0);
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glMultMatrixf(rotate.f);
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glTranslatef(-player.pos.x, -player.pos.y, -player.pos.z);
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//glLightfv(GL_LIGHT0, GL_POSITION, light_position);
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glPushMatrix();
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glDisable(GL_TEXTURE_2D);
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glColor3fv((GLfloat*)&color_light);
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//glMaterialfv(GL_FRONT, GL_EMISSION, light_emission);
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glTranslatef(light.pos.x, light.pos.y, light.pos.z);
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glScalef(0.1, 0.1, 0.1);
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glCallList(sphere);
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//glMaterialfv(GL_FRONT, GL_EMISSION, std_emission);
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glEnable(GL_TEXTURE_2D);
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glPopMatrix();
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glColor3fv((GLfloat*)&color_ambient);
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DrawRoom(&level, player.room);
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glFlush();
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}
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