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-rw-r--r--src/Decals.cpp375
1 files changed, 375 insertions, 0 deletions
diff --git a/src/Decals.cpp b/src/Decals.cpp
new file mode 100644
index 0000000..3cebb4c
--- /dev/null
+++ b/src/Decals.cpp
@@ -0,0 +1,375 @@
+#include "Decals.h"
+#include "Textures.h"
+
+extern double multiplier;
+extern bool slomo;
+extern Fog fog;
+extern bool blood;
+extern float fogcolorr;
+extern float fogcolorg;
+extern float fogcolorb;
+//Functions
+extern float sinefluct;
+extern int environment;
+extern Model gunmodels[10];
+extern Camera camera;
+extern float precipitationhorz;
+extern float precipitationvert;
+extern float precipitationdensity;
+extern float snowdelay;
+
+int Decals::MakeDecal(int atype, XYZ location, float size, XYZ normal, int poly, Model *model, XYZ move, float rotation){
+	int major=0;
+	float normalv[3];
+	XYZ right;
+	XYZ up;
+	XYZ nothing;
+	XYZ axis[3];
+	XYZ temp;
+	
+	nothing=0;
+	
+	axis[0].x=1;
+	axis[1].y=1;
+	axis[2].z=1;
+	
+	normalv[0]=abs(normal.x);
+	normalv[1]=abs(normal.y);
+	normalv[2]=abs(normal.z);
+	
+	
+	if(normalv[1]>normalv[major])major=1;
+	if(normalv[2]>normalv[major])major=2;
+	
+	if (normalv[0] == 1 || normalv[1] == 1 || normalv[2] == 1)
+	{
+	if ((major == 0 && normal.x > 0) || major == 1){
+		right=0;
+		right.z=-1;}
+	else if (major == 0){
+		right=0;
+		right.z=1;}
+    else {
+        right=0;
+		right.x=normal.z;}
+   	}
+   	else
+    	CrossProduct(axis[major], normal, &right);
+   
+    CrossProduct(normal, right, &up);
+    Normalise(&up); 
+    Normalise(&right);
+	
+	float count;
+	float count2;
+	float countinc=1/size;
+	if(countinc<.01)countinc=.01;
+	if(countinc>.2)countinc=.2;
+	float normaloffset=.02;
+	int good;
+	
+	numpoints[howmanydecals]=0;
+    points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing - right - up) * (size/3) /*+ normal/100*/;
+    texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = 0;
+    texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = 0;
+    if((move.x==0&&move.z==0&&rotation==0)||
+    LineFacetd(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25, model->vertex[model->Triangles[poly].vertex[0]], model->vertex[model->Triangles[poly].vertex[1]], model->vertex[model->Triangles[poly].vertex[2]],normal,&temp)
+    )numpoints[howmanydecals]++;
+    else {
+    	good=-1;
+    	count=1-countinc;
+    	while(good==-1&&count>-1){
+    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = 0;
+    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = .5-count/2;
+    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing - right - up*count) * (size/3);
+    		count-=countinc;
+    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+    	}
+    	if(good!=-1)numpoints[howmanydecals]++;
+    	good=-1;
+    	count=1-countinc;
+    	while(good==-1&&count>-1){
+    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = .5-count/2;
+    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = 0;
+    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing - right*count - up) * (size/3);
+    		count-=countinc;
+    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+    	}
+    	if(good!=-1)numpoints[howmanydecals]++;
+    	if(good==-1){
+    		good=-1;
+	    	count2=1-countinc;
+	    	while(good==-1&&count2>-1){
+	    		count=1-countinc;
+		    	while(good==-1&&count>-1){
+		    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = .5-count2/2;
+		    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = .5-count/2;
+		    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing - right*count2 - up*count) * (size/3);
+		    		count-=countinc;
+		    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+		    	}
+		    	count2-=countinc;
+		    }
+	    	if(good!=-1)numpoints[howmanydecals]++;
+    	}
+    }
+    
+    points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing + right - up) * (size/3) /*+ normal/100*/;
+    texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = 1;
+    texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = 0;
+    if((move.x==0&&move.y==0&&move.z==0&&rotation==0)||
+    LineFacetd(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25, model->vertex[model->Triangles[poly].vertex[0]], model->vertex[model->Triangles[poly].vertex[1]], model->vertex[model->Triangles[poly].vertex[2]],normal,&temp)
+    )numpoints[howmanydecals]++;
+    else {
+    	good=-1;
+    	count=1-countinc;
+    	while(good==-1&&count>-1){
+    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = .5+count/2;
+    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = 0;
+    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing + right*count - up) * (size/3);
+    		count-=countinc;
+    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+    	}
+    	if(good!=-1)numpoints[howmanydecals]++;
+    	good=-1;
+    	count=1-countinc;
+    	while(good==-1&&count>-1){
+    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = 1;
+    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = .5-count/2;
+    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing + right - up*count) * (size/3);
+    		count-=countinc;
+    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+    	}
+    	if(good!=-1)numpoints[howmanydecals]++;
+    	if(good==-1){
+    		good=-1;
+	    	count2=1-countinc;
+	    	while(good==-1&&count2>-1){
+	    		count=1-countinc;
+		    	while(good==-1&&count>-1){
+		    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = .5+count2/2;
+		    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = .5-count/2;
+		    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing + right*count2 - up*count) * (size/3);
+		    		count-=countinc;
+		    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+		    	}
+		    	count2-=countinc;
+		    }
+	    	if(good!=-1)numpoints[howmanydecals]++;
+    	}
+    }
+    
+    points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing + right + up) * (size/3) /*+ normal/100*/;
+    texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = 1;
+    texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = 1;
+    if((move.x==0&&move.y==0&&move.z==0&&rotation==0)||
+    LineFacetd(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25, model->vertex[model->Triangles[poly].vertex[0]], model->vertex[model->Triangles[poly].vertex[1]], model->vertex[model->Triangles[poly].vertex[2]],normal,&temp)
+    )numpoints[howmanydecals]++;
+    else {
+    	good=-1;
+    	count=1-countinc;
+    	while(good==-1&&count>-1){
+    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = 1;
+    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = .5+count/2;
+    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing + right + up*count) * (size/3);
+    		count-=countinc;
+    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+    	}
+    	if(good!=-1)numpoints[howmanydecals]++;
+    	good=-1;
+    	count=1-countinc;
+    	while(good==-1&&count>-1){
+    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = .5+count/2;
+    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = 1;
+    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing + right*count + up) * (size/3);
+    		count-=countinc;
+    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+    	}
+    	if(good!=-1)numpoints[howmanydecals]++;
+    	if(good==-1){
+    		good=-1;
+	    	count2=1-countinc;
+	    	while(good==-1&&count2>-1){
+	    		count=1-countinc;
+		    	while(good==-1&&count>-1){
+		    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = .5+count2/2;
+		    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = .5+count/2;
+		    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing + right*count2 + up*count) * (size/3);
+		    		count-=countinc;
+		    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+		    	}
+		    	count2-=countinc;
+		    }
+	    	if(good!=-1)numpoints[howmanydecals]++;
+    	}
+    }
+    
+    points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing - right + up) * (size/3) /*+ normal/100*/;
+	texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = 0;
+    texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = 1;
+    if((move.x==0&&move.y==0&&move.z==0&&rotation==0)||
+    LineFacetd(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25, model->vertex[model->Triangles[poly].vertex[0]], model->vertex[model->Triangles[poly].vertex[1]], model->vertex[model->Triangles[poly].vertex[2]],normal,&temp)
+    )numpoints[howmanydecals]++;
+    else {
+    	good=-1;
+    	count=1-countinc;
+    	while(good==-1&&count>-1){
+    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = .5-count/2;
+    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = 1;
+    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing - right*count + up) * (size/3);
+    		count-=countinc;
+    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+    	}
+    	if(good!=-1)numpoints[howmanydecals]++;
+    	good=-1;
+    	count=1-countinc;
+    	while(good==-1&&count>-1){
+    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = 0;
+    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = .5+count/2;
+    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing - right + up*count) * (size/3);
+    		count-=countinc;
+    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+    	}
+    	if(good!=-1)numpoints[howmanydecals]++;
+    	if(good==-1){
+    		good=-1;
+	    	count2=1-countinc;
+	    	while(good==-1&&count2>-1){
+	    		count=1-countinc;
+		    	while(good==-1&&count>-1){
+		    		texcoordsx[howmanydecals*8+numpoints[howmanydecals]] = .5-count2/2;
+		    		texcoordsy[howmanydecals*8+numpoints[howmanydecals]] = .5+count/2;
+		    		points[howmanydecals*8+numpoints[howmanydecals]] = location + (nothing - right*count2 + up*count) * (size/3);
+		    		count-=countinc;
+		    		good=model->LineCheck2(points[howmanydecals*8+numpoints[howmanydecals]]+normal/25,points[howmanydecals*8+numpoints[howmanydecals]]-normal/25,&temp,move,rotation);
+		    	}
+		    	count2-=countinc;
+		    }
+	    	if(good!=-1)numpoints[howmanydecals]++;
+    	}
+    }
+    for(int i=0;i<numpoints[howmanydecals];i++){
+    	 points[howmanydecals*8+i] += normal*normaloffset;
+    }
+    
+    type[howmanydecals]=atype;
+	alivetime[howmanydecals]=0;
+	if(howmanydecals<maxdecals){howmanydecals++;}
+
+	return 0;
+}
+
+int Decals::DeleteDecal(int which){
+	if(which>=0){
+		numpoints[which]=numpoints[howmanydecals-1];
+		alivetime[which]=alivetime[howmanydecals-1];
+		type[which]=type[howmanydecals-1];
+		for(int i=0;i<numpoints[which];i++){
+			points[which*8+i] = points[howmanydecals*8-8+i];
+		    texcoordsx[which*8+i] = texcoordsx[howmanydecals*8-8+i];
+		    texcoordsy[which*8+i] = texcoordsy[howmanydecals*8-8+i];
+	    }
+		if(howmanydecals>0){howmanydecals--;}
+	}
+	
+	return 0;
+}
+
+void Decals::LoadBulletHoleTexture(char *fileName)
+{
+	bulletholetextureptr = loadTexture(fileName);
+}
+
+void Decals::LoadBloodTexture(char *fileName, int which)
+{
+	bloodtextureptr[which] = loadTexture(fileName);
+}
+
+void Decals::LoadCraterTexture(char *fileName)
+{
+	cratertextureptr = loadTexture(fileName);
+}
+
+void Decals::DoStuff()
+{
+	for(int i=0;i<howmanydecals;i++){
+		alivetime[i]+=multiplier;
+		if(alivetime[i]>10&&(type[i]==bullethole||type[i]==crater))DeleteDecal(i);
+		if(alivetime[i]>20&&(type[i]==bloodpool))DeleteDecal(i);
+	}
+}
+
+void Decals::draw()
+{
+	glAlphaFunc(GL_GREATER, 0.01);
+	
+	float bloodpoolspeed=1;
+	
+	glDepthFunc(GL_LEQUAL);
+	glEnable(GL_BLEND);
+	glEnable(GL_CULL_FACE);
+	glEnable(GL_TEXTURE_2D);
+	glEnable(GL_LIGHTING);
+	glDepthMask(0);
+	glAlphaFunc(GL_GREATER, 0.01);
+	glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP );
+	glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP );
+	glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
+	glEnable(GL_POLYGON_OFFSET_FILL);
+	for(int i=0;i<howmanydecals;i++){
+		if(type[i]==bullethole)glBindTexture(GL_TEXTURE_2D, bulletholetextureptr);
+		if(type[i]==crater)glBindTexture(GL_TEXTURE_2D, cratertextureptr);
+		if(type[i]!=bloodpool)glColor4f(1,1,1,10-alivetime[i]);
+		
+		if(type[i]==bloodpool&&alivetime[i]<bloodpoolspeed*.2)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[0]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*.2&&alivetime[i]<bloodpoolspeed*.4)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[1]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*.4&&alivetime[i]<bloodpoolspeed*.6)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[2]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*.6&&alivetime[i]<bloodpoolspeed*.8)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[3]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*.8&&alivetime[i]<bloodpoolspeed*1)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[4]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*1&&alivetime[i]<bloodpoolspeed*1.2)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[5]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*1.2&&alivetime[i]<bloodpoolspeed*1.4)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[6]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*1.4&&alivetime[i]<bloodpoolspeed*1.6)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[7]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*1.6&&alivetime[i]<bloodpoolspeed*1.8)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[8]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*1.8&&alivetime[i]<bloodpoolspeed*2.0)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[9]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*2.0)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[10]);
+		if(type[i]==bloodpool&&alivetime[i]<bloodpoolspeed*2.0)glColor4f(1,1,1,1.5-(alivetime[i]*5/bloodpoolspeed-(int)(alivetime[i]*5/bloodpoolspeed)));
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*2.0)glColor4f(1,1,1,20-alivetime[i]);
+		
+		glPushMatrix();
+		glBegin(GL_TRIANGLE_FAN);
+			for(int j=0;j<numpoints[i];j++){
+			 glTexCoord2f(texcoordsx[i*8+j], texcoordsy[i*8+j]); glVertex3f(points[i*8+j].x,points[i*8+j].y,points[i*8+j].z);
+			}
+		glEnd();
+		glPopMatrix();
+		
+		if(type[i]==bloodpool&&alivetime[i]<bloodpoolspeed*2.0){
+			if(type[i]==bloodpool&&alivetime[i]<bloodpoolspeed*.2)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[1]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*.2&&alivetime[i]<bloodpoolspeed*.4)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[2]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*.4&&alivetime[i]<bloodpoolspeed*.6)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[3]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*.6&&alivetime[i]<bloodpoolspeed*.8)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[4]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*.8&&alivetime[i]<bloodpoolspeed*1)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[5]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*1&&alivetime[i]<bloodpoolspeed*1.2)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[6]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*1.2&&alivetime[i]<bloodpoolspeed*1.4)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[7]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*1.4&&alivetime[i]<bloodpoolspeed*1.6)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[8]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*1.6&&alivetime[i]<bloodpoolspeed*1.8)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[9]);
+		if(type[i]==bloodpool&&alivetime[i]>=bloodpoolspeed*1.8&&alivetime[i]<bloodpoolspeed*2.0)glBindTexture(GL_TEXTURE_2D, bloodtextureptr[10]);
+		if(type[i]==bloodpool)glColor4f(1,1,1,alivetime[i]*5/bloodpoolspeed-(int)(alivetime[i]*5/bloodpoolspeed));
+			
+			glPushMatrix();
+			glBegin(GL_TRIANGLE_FAN);
+				for(int j=0;j<numpoints[i];j++){
+				 glTexCoord2f(texcoordsx[i*8+j], texcoordsy[i*8+j]); glVertex3f(points[i*8+j].x,points[i*8+j].y,points[i*8+j].z);
+				}
+			glEnd();
+			glPopMatrix();
+		}
+	}
+	glDepthMask(1);
+	glDisable(GL_TEXTURE_2D);
+	glColor4f(1,1,1,1);
+	glEnable(GL_CULL_FACE);
+	glDisable(GL_POLYGON_OFFSET_FILL);
+	glDepthFunc(GL_LEQUAL);
+}
+
generated by cgit-pink 1.4.1 (git 2.36.1) at 2025-09-10 04:09:52 +0000