/**************************************** * NDS NeHe Lesson 10 * * Author: Dovoto * ****************************************/ // include your ndslib #include #include #include //needed to load pcx files #include #include #include "Mud_pcx.h" #include "World_txt.h" int DrawGLScene(); const float piover180 = 0.0174532925f; float heading; float xpos; float zpos; float yrot; // Y Rotation float walkbias = 0; float walkbiasangle = 0; float lookupdown = 0.0f; int texture[3]; // Storage For 3 Textures (only going to use 1 on the DS for this demo) typedef struct tagVERTEX { float x, y, z; float u, v; } VERTEX; typedef struct tagTRIANGLE { VERTEX vertex[3]; } TRIANGLE; typedef struct tagSECTOR { int numtriangles; TRIANGLE* triangle; } SECTOR; SECTOR sector1; // Our Model Goes Here: float sin(float angle) { int32 s = sinLerp((short)(angle * DEGREES_IN_CIRCLE / 360)); return f32tofloat(s); } float cos(float angle) { int32 c = cosLerp((short)(angle * DEGREES_IN_CIRCLE / 360)); return f32tofloat(c); } u8* file = (u8*)World_txt; void myGetStr(char* buff, int size) { *buff = *file++; while( (*buff != '\n') && (*buff != 0xD)) { buff++; *buff = *file++; } buff[0] = '\n'; buff[1] = 0; } void readstr(char *string) { do { myGetStr(string, 255); } while ((string[0] == '/') || (string[0] == '\n' )); return; } void SetupWorld() { float x, y, z, u, v; int numtriangles; char oneline[255]; readstr(oneline); sscanf(oneline, "NUMPOLLIES %d\n", &numtriangles); sector1.triangle = (TRIANGLE*)malloc(numtriangles*sizeof(TRIANGLE)); sector1.numtriangles = numtriangles; for (int loop = 0; loop < numtriangles; loop++) { for (int vert = 0; vert < 3; vert++) { readstr(oneline); sscanf(oneline, "%f %f %f %f %f", &x, &y, &z, &u, &v); sector1.triangle[loop].vertex[vert].x = x; sector1.triangle[loop].vertex[vert].y = y; sector1.triangle[loop].vertex[vert].z = z; sector1.triangle[loop].vertex[vert].u = u; sector1.triangle[loop].vertex[vert].v = v; } } return; } int LoadGLTextures() // Load PCX files And Convert To Textures { sImage pcx; //////////////(NEW) and different from nehe. //load our texture loadPCX((u8*)Mud_pcx, &pcx); image8to16(&pcx); glGenTextures(1, &texture[0]); glBindTexture(0, texture[0]); glTexImage2D(0, 0, GL_RGB, TEXTURE_SIZE_128 , TEXTURE_SIZE_128, 0, TEXGEN_TEXCOORD | GL_TEXTURE_WRAP_S | GL_TEXTURE_WRAP_T, pcx.image.data8); return TRUE; } int main() { // Setup the Main screen for 3D videoSetMode(MODE_0_3D); vramSetBankA(VRAM_A_TEXTURE); //NEW must set up some memory for textures consoleDemoInit(); // initialize the geometry engine glInit(); // enable textures glEnable(GL_TEXTURE_2D); // enable antialiasing glEnable(GL_ANTIALIAS); // setup the rear plane glClearColor(0,0,0,31); // BG must be opaque for AA to work glClearPolyID(63); // BG must have a unique polygon ID for AA to work glClearDepth(0x7FFF); // Set our viewport to be the same size as the screen glViewport(0,0,255,191); LoadGLTextures(); SetupWorld(); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(70, 256.0 / 192.0, 0.1, 100); glLight(0, RGB15(31,31,31) , 0, floattov10(-1.0), 0); //need to set up some material properties since DS does not have them set by default glMaterialf(GL_AMBIENT, RGB15(16,16,16)); glMaterialf(GL_DIFFUSE, RGB15(16,16,16)); glMaterialf(GL_SPECULAR, BIT(15) | RGB15(8,8,8)); glMaterialf(GL_EMISSION, RGB15(16,16,16)); //ds uses a table for shinyness..this generates a half-ass one glMaterialShinyness(); //ds specific, several attributes can be set here glPolyFmt(POLY_ALPHA(31) | POLY_CULL_NONE | POLY_FORMAT_LIGHT0); // Set the current matrix to be the model matrix glMatrixMode(GL_MODELVIEW); while (1) { //these little button functions are pretty handy scanKeys(); if (keysHeld() & KEY_A) { lookupdown -= 1.0f; } if (keysHeld() & KEY_B) { lookupdown += 1.0f; } if (keysHeld() & KEY_LEFT) { heading += 1.0f; yrot = heading; } if (keysHeld() & KEY_RIGHT) { heading -= 1.0f; yrot = heading; } if (keysHeld() & KEY_DOWN) { xpos += (float)sin(heading) * 0.05f; zpos += (float)cos(heading) * 0.05f; if (walkbiasangle >= 359.0f) { walkbiasangle = 0.0f; } else { walkbiasangle+= 10; } walkbias = (float)sin(walkbiasangle)/20.0f; } if (keysHeld() & KEY_UP) { xpos -= (float)sin(heading) * 0.05f; zpos -= (float)cos(heading) * 0.05f; if (walkbiasangle <= 1.0f) { walkbiasangle = 359.0f; } else { walkbiasangle-= 10; } walkbias = (float)sin(walkbiasangle)/20.0f; } glColor3f(1,1,1); DrawGLScene(); // flush to screen glFlush(0); // wait for the screen to refresh swiWaitForVBlank(); } return 0; } int DrawGLScene() // Here's Where We Do All The Drawing { // Reset The View float x_m, y_m, z_m, u_m, v_m; float xtrans = -xpos; float ztrans = -zpos; float ytrans = -walkbias-0.25f; float sceneroty = 360.0f - yrot; glLoadIdentity(); int numtriangles; glRotatef(lookupdown,1.0f,0,0); glRotatef(sceneroty,0,1.0f,0); glTranslatef(xtrans, ytrans, ztrans); glBindTexture(GL_TEXTURE_2D, texture[0]); numtriangles = sector1.numtriangles; // Process Each Triangle for (int loop_m = 0; loop_m < numtriangles; loop_m++) { glBegin(GL_TRIANGLES); glNormal3f( 0.0f, 0.0f, 1.0f); x_m = sector1.triangle[loop_m].vertex[0].x; y_m = sector1.triangle[loop_m].vertex[0].y; z_m = sector1.triangle[loop_m].vertex[0].z; u_m = sector1.triangle[loop_m].vertex[0].u; v_m = sector1.triangle[loop_m].vertex[0].v; glTexCoord2f(u_m,v_m); glVertex3f(x_m,y_m,z_m); x_m = sector1.triangle[loop_m].vertex[1].x; y_m = sector1.triangle[loop_m].vertex[1].y; z_m = sector1.triangle[loop_m].vertex[1].z; u_m = sector1.triangle[loop_m].vertex[1].u; v_m = sector1.triangle[loop_m].vertex[1].v; glTexCoord2f(u_m,v_m); glVertex3f(x_m,y_m,z_m); x_m = sector1.triangle[loop_m].vertex[2].x; y_m = sector1.triangle[loop_m].vertex[2].y; z_m = sector1.triangle[loop_m].vertex[2].z; u_m = sector1.triangle[loop_m].vertex[2].u; v_m = sector1.triangle[loop_m].vertex[2].v; glTexCoord2f(u_m,v_m); glVertex3f(x_m,y_m,z_m); glEnd(); } return TRUE; // Everything Went OK }