From 79801b6b794a5fb50a3a013354323a48de37c050 Mon Sep 17 00:00:00 2001
From: neoraider <devnull@localhost>
Date: Fri, 20 Oct 2006 12:57:05 +0000
Subject: Physik-Engine angefangen. Lightmaps implementiert.

---
 render.c | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 63 insertions(+), 6 deletions(-)

(limited to 'render.c')

diff --git a/render.c b/render.c
index 5816090..508be8a 100644
--- a/render.c
+++ b/render.c
@@ -3,15 +3,67 @@
 #include <zoom/render.h>
 #include <zoom/player.h>
 #include <zoom/level.h>
+#include <zoom/texture.h>
 #include <neofx/math.h>
 
 extern PLAYER player;
 extern LEVEL level;
 extern GLuint sphere;
+extern LIGHT light;
+
+void RenderWall(WALL w, GLuint *textures) {
+	int i;
+	float d, s, t;
+	VECTOR v, v1, v2;
+	VERTEX p;
+	
+	glBindTexture(GL_TEXTURE_2D, textures[w.texture]);
+	
+	d = VectorDot(w.normal, VectorSub(w.vertices[0], light.pos));
+	
+	if(d >= 0) {
+		glActiveTexture(GL_TEXTURE0);
+		glDisable(GL_TEXTURE_2D);
+		
+		glBegin(GL_TRIANGLES);
+		
+		for(i = 0; i < 3; i++) {
+			glMultiTexCoord2fv(GL_TEXTURE1, (GLfloat*)&w.texcoords[i]);
+			glVertex3fv((GLfloat*)&w.vertices[i]);
+		}
+		
+		glEnd();
+		
+		glEnable(GL_TEXTURE_2D);
+		glActiveTexture(GL_TEXTURE1);
+		
+		return;
+	}
+	
+	p = VectorAdd(light.pos, VectorMul(w.normal, d));
+	
+	v1 = VectorNormalize(VectorSub(w.vertices[0], w.vertices[1]));
+	v2 = VectorCross(v1, w.normal);
+	
+	glBegin(GL_TRIANGLES);
+	
+	glNormal3fv((GLfloat*)&w.normal);
+	
+	for(i = 0; i < 3; i++) {
+		v = VectorSub(w.vertices[i], p);
+		s = VectorDot(v, v1)*0.005 / d + 0.5;
+		t = VectorDot(v, v2)*0.005 / d + 0.5;
+		glMultiTexCoord2f(GL_TEXTURE0, s, t);
+		glMultiTexCoord2fv(GL_TEXTURE1, (GLfloat*)&w.texcoords[i]);
+		glVertex3fv((GLfloat*)&w.vertices[i]);
+	}
+	
+	glEnd();
+}
 
 void Render() {
-	GLfloat light_position[] = { 0.0, 0.0, 0.0, 1.0 };
-	GLfloat light_emission[] = {1.0, 1.0, 1.0, 1.0};
+	//GLfloat light_position[] = { 0.0, 0.0, 0.0, 1.0 };
+	//GLfloat light_emission[] = {1.0, 1.0, 1.0, 1.0};
 	GLfloat std_emission[] = {0.0, 0.0, 0.0, 1.0};
 	MATRIX rotate = {
 		player.rotycos, 0.0, -player.rotysin, 0.0,
@@ -19,6 +71,8 @@ void Render() {
 		player.rotysin, 0.0, player.rotycos, 0.0,
 		0.0, 0.0, 0.0, 1.0
 	};
+	COLOR color_light = {1.0, 1.0, 1.0};
+	COLOR color_ambient = {0.1, 0.1, 0.1};
 	
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 	glLoadIdentity();
@@ -29,17 +83,20 @@ void Render() {
 	
 	glTranslatef(-player.pos.x, -player.pos.y, -player.pos.z);
 	
-	glLightfv(GL_LIGHT0, GL_POSITION, light_position);
+	//glLightfv(GL_LIGHT0, GL_POSITION, light_position);
 	glPushMatrix();
 	glDisable(GL_TEXTURE_2D);
-	glMaterialfv(GL_FRONT, GL_EMISSION, light_emission);
-	glTranslatef(light_position[0], light_position[1], light_position[2]);
+	glColor3fv((GLfloat*)&color_light);
+	//glMaterialfv(GL_FRONT, GL_EMISSION, light_emission);
+	glTranslatef(light.pos.x, light.pos.y, light.pos.z);
 	glScalef(0.1, 0.1, 0.1);
 	glCallList(sphere);
-	glMaterialfv(GL_FRONT, GL_EMISSION, std_emission);
+	//glMaterialfv(GL_FRONT, GL_EMISSION, std_emission);
 	glEnable(GL_TEXTURE_2D);
 	glPopMatrix();
 	
+	glColor3fv((GLfloat*)&color_ambient);
+	
 	DrawRoom(&level, player.room);
 	
 	glFlush();
-- 
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