Shipwright/soh/src/code/z_lights.c
M4xw 39cc86c260 git subrepo clone https://github.com/HarbourMasters/soh.git
subrepo:
  subdir:   "soh"
  merged:   "ba904bbd0"
upstream:
  origin:   "https://github.com/HarbourMasters/soh.git"
  branch:   "master"
  commit:   "ba904bbd0"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"
2022-03-22 02:51:23 +01:00

412 lines
12 KiB
C

#include "global.h"
#include <string.h>
#include "objects/gameplay_keep/gameplay_keep.h"
#define LIGHTS_BUFFER_SIZE 32
//#define LIGHTS_BUFFER_SIZE 1024 // Kill me
typedef struct {
/* 0x000 */ s32 numOccupied;
/* 0x004 */ s32 searchIndex;
/* 0x008 */ LightNode buf[LIGHTS_BUFFER_SIZE];
} LightsBuffer; // size = 0x188
LightsBuffer sLightsBuffer;
void Lights_PointSetInfo(LightInfo* info, s16 x, s16 y, s16 z, u8 r, u8 g, u8 b, s16 radius, s32 type) {
info->type = type;
info->params.point.x = x;
info->params.point.y = y;
info->params.point.z = z;
Lights_PointSetColorAndRadius(info, r, g, b, radius);
}
void Lights_PointNoGlowSetInfo(LightInfo* info, s16 x, s16 y, s16 z, u8 r, u8 g, u8 b, s16 radius) {
Lights_PointSetInfo(info, x, y, z, r, g, b, radius, LIGHT_POINT_NOGLOW);
}
void Lights_PointGlowSetInfo(LightInfo* info, s16 x, s16 y, s16 z, u8 r, u8 g, u8 b, s16 radius) {
Lights_PointSetInfo(info, x, y, z, r, g, b, radius, LIGHT_POINT_GLOW);
}
void Lights_PointSetColorAndRadius(LightInfo* info, u8 r, u8 g, u8 b, s16 radius) {
info->params.point.color[0] = r;
info->params.point.color[1] = g;
info->params.point.color[2] = b;
info->params.point.radius = radius;
}
void Lights_DirectionalSetInfo(LightInfo* info, s8 x, s8 y, s8 z, u8 r, u8 g, u8 b) {
info->type = LIGHT_DIRECTIONAL;
info->params.dir.x = x;
info->params.dir.y = y;
info->params.dir.z = z;
info->params.dir.color[0] = r;
info->params.dir.color[1] = g;
info->params.dir.color[2] = b;
}
// unused
void Lights_Reset(Lights* lights, u8 ambentR, u8 ambentG, u8 ambentB) {
lights->l.a.l.col[0] = lights->l.a.l.colc[0] = ambentR;
lights->l.a.l.col[1] = lights->l.a.l.colc[1] = ambentG;
lights->l.a.l.col[2] = lights->l.a.l.colc[2] = ambentB;
lights->numLights = 0;
}
/*
* Draws every light in the provided Lights group
*/
void Lights_Draw(Lights* lights, GraphicsContext* gfxCtx) {
Light* light;
s32 i;
#if 1
OPEN_DISPS(gfxCtx, "../z_lights.c", 339);
gSPNumLights(POLY_OPA_DISP++, lights->numLights);
gSPNumLights(POLY_XLU_DISP++, lights->numLights);
i = 0;
light = &lights->l.l[0];
while (i < lights->numLights) {
i++;
gSPLight(POLY_OPA_DISP++, light, i);
gSPLight(POLY_XLU_DISP++, light, i);
light++;
}
if (0) {}
i++; // abmient light is total number of lights + 1
gSPLight(POLY_OPA_DISP++, &lights->l.a, i);
gSPLight(POLY_XLU_DISP++, &lights->l.a, i);
CLOSE_DISPS(gfxCtx, "../z_lights.c", 352);
#endif
}
Light* Lights_FindSlot(Lights* lights) {
if (lights->numLights >= 7) {
return NULL;
} else {
return &lights->l.l[lights->numLights++];
}
}
void Lights_BindPoint(Lights* lights, LightParams* params, Vec3f* vec) {
f32 xDiff;
f32 yDiff;
f32 zDiff;
f32 posDiff;
f32 scale;
Light* light;
if (vec != NULL) {
xDiff = params->point.x - vec->x;
yDiff = params->point.y - vec->y;
zDiff = params->point.z - vec->z;
scale = params->point.radius;
posDiff = SQ(xDiff) + SQ(yDiff) + SQ(zDiff);
if (posDiff < SQ(scale)) {
light = Lights_FindSlot(lights);
if (light != NULL) {
posDiff = sqrtf(posDiff);
if (1) {}
scale = posDiff / scale;
scale = 1 - SQ(scale);
light->l.col[0] = light->l.colc[0] = params->point.color[0] * scale;
light->l.col[1] = light->l.colc[1] = params->point.color[1] * scale;
light->l.col[2] = light->l.colc[2] = params->point.color[2] * scale;
scale = (posDiff < 1.0f) ? 120.0f : 120.0f / posDiff;
light->l.dir[0] = xDiff * scale;
light->l.dir[1] = yDiff * scale;
light->l.dir[2] = zDiff * scale;
}
}
}
}
void Lights_BindDirectional(Lights* lights, LightParams* params, Vec3f* vec) {
Light* light = Lights_FindSlot(lights);
if (light != NULL) {
light->l.col[0] = light->l.colc[0] = params->dir.color[0];
light->l.col[1] = light->l.colc[1] = params->dir.color[1];
light->l.col[2] = light->l.colc[2] = params->dir.color[2];
light->l.dir[0] = params->dir.x;
light->l.dir[1] = params->dir.y;
light->l.dir[2] = params->dir.z;
}
}
/**
* For every light in a provided list, try to find a free slot in the provided Lights group and bind
* a light to it. Then apply color and positional/directional info for each light
* based on the parameters supplied by the node.
*
* Note: Lights in a given list can only be binded to however many free slots are
* available in the Lights group. This is at most 7 slots for a new group, but could be less.
*/
void Lights_BindAll(Lights* lights, LightNode* listHead, Vec3f* vec) {
LightsBindFunc bindFuncs[] = { Lights_BindPoint, Lights_BindDirectional, Lights_BindPoint };
LightInfo* info;
while (listHead != NULL) {
info = listHead->info;
bindFuncs[info->type](lights, &info->params, vec);
listHead = listHead->next;
}
}
LightNode* Lights_FindBufSlot() {
LightNode* node;
if (sLightsBuffer.numOccupied >= LIGHTS_BUFFER_SIZE) {
return NULL;
}
node = &sLightsBuffer.buf[sLightsBuffer.searchIndex];
while (node->info != NULL) {
sLightsBuffer.searchIndex++;
if (sLightsBuffer.searchIndex < LIGHTS_BUFFER_SIZE) {
node++;
} else {
sLightsBuffer.searchIndex = 0;
node = &sLightsBuffer.buf[0];
}
}
sLightsBuffer.numOccupied++;
return node;
}
// return type must not be void to match
s32 Lights_FreeNode(LightNode* light) {
if (light != NULL) {
sLightsBuffer.numOccupied--;
light->info = NULL;
sLightsBuffer.searchIndex = (light - sLightsBuffer.buf) / sizeof(LightNode);
}
}
void LightContext_Init(GlobalContext* globalCtx, LightContext* lightCtx) {
LightContext_InitList(globalCtx, lightCtx);
LightContext_SetAmbientColor(lightCtx, 80, 80, 80);
LightContext_SetFog(lightCtx, 0, 0, 0, 996, 12800);
memset(&sLightsBuffer, 0, sizeof(sLightsBuffer));
}
void LightContext_SetAmbientColor(LightContext* lightCtx, u8 r, u8 g, u8 b) {
lightCtx->ambientColor[0] = r;
lightCtx->ambientColor[1] = g;
lightCtx->ambientColor[2] = b;
}
void LightContext_SetFog(LightContext* lightCtx, u8 r, u8 g, u8 b, s16 fogNear, s16 fogFar) {
lightCtx->fogColor[0] = r;
lightCtx->fogColor[1] = g;
lightCtx->fogColor[2] = b;
lightCtx->fogNear = fogNear;
lightCtx->fogFar = fogFar;
}
/**
* Allocate a new Lights group and initilize the ambient color with that provided by LightContext
*/
Lights* LightContext_NewLights(LightContext* lightCtx, GraphicsContext* gfxCtx) {
return Lights_New(gfxCtx, lightCtx->ambientColor[0], lightCtx->ambientColor[1], lightCtx->ambientColor[2]);
}
void LightContext_InitList(GlobalContext* globalCtx, LightContext* lightCtx) {
lightCtx->listHead = NULL;
}
void LightContext_DestroyList(GlobalContext* globalCtx, LightContext* lightCtx) {
while (lightCtx->listHead != NULL) {
LightContext_RemoveLight(globalCtx, lightCtx, lightCtx->listHead);
lightCtx->listHead = lightCtx->listHead->next;
}
}
/**
* Insert a new light into the list pointed to by LightContext
*
* Note: Due to the limited number of slots in a Lights group, inserting too many lights in the
* list may result in older entries not being bound to a Light when calling Lights_BindAll
*/
LightNode* LightContext_InsertLight(GlobalContext* globalCtx, LightContext* lightCtx, LightInfo* info) {
LightNode* node;
node = Lights_FindBufSlot();
if (node != NULL) {
node->info = info;
node->prev = NULL;
node->next = lightCtx->listHead;
if (lightCtx->listHead != NULL) {
lightCtx->listHead->prev = node;
}
lightCtx->listHead = node;
}
return node;
}
void LightContext_RemoveLight(GlobalContext* globalCtx, LightContext* lightCtx, LightNode* node) {
if (node != NULL) {
if (node->prev != NULL) {
node->prev->next = node->next;
} else {
lightCtx->listHead = node->next;
}
if (node->next != NULL) {
node->next->prev = node->prev;
}
Lights_FreeNode(node);
}
}
// unused
Lights* Lights_NewAndDraw(GraphicsContext* gfxCtx, u8 ambientR, u8 ambientG, u8 ambientB, u8 numLights, u8 r, u8 g,
u8 b, s8 x, s8 y, s8 z) {
Lights* lights;
s32 i;
lights = Graph_Alloc(gfxCtx, sizeof(Lights));
lights->l.a.l.col[0] = lights->l.a.l.colc[0] = ambientR;
lights->l.a.l.col[1] = lights->l.a.l.colc[1] = ambientG;
lights->l.a.l.col[2] = lights->l.a.l.colc[2] = ambientB;
lights->numLights = numLights;
for (i = 0; i < numLights; i++) {
lights->l.l[i].l.col[0] = lights->l.l[i].l.colc[0] = r;
lights->l.l[i].l.col[1] = lights->l.l[i].l.colc[1] = g;
lights->l.l[i].l.col[2] = lights->l.l[i].l.colc[2] = b;
lights->l.l[i].l.dir[0] = x;
lights->l.l[i].l.dir[1] = y;
lights->l.l[i].l.dir[2] = z;
}
Lights_Draw(lights, gfxCtx);
return lights;
}
Lights* Lights_New(GraphicsContext* gfxCtx, u8 ambientR, u8 ambientG, u8 ambientB) {
Lights* lights;
lights = Graph_Alloc(gfxCtx, sizeof(Lights));
lights->l.a.l.col[0] = lights->l.a.l.colc[0] = ambientR;
lights->l.a.l.col[1] = lights->l.a.l.colc[1] = ambientG;
lights->l.a.l.col[2] = lights->l.a.l.colc[2] = ambientB;
lights->numLights = 0;
return lights;
}
void Lights_GlowCheck(GlobalContext* globalCtx) {
LightNode* node;
LightPoint* params;
Vec3f pos;
Vec3f multDest;
f32 wDest;
f32 wX;
f32 wY;
s32 wZ;
s32 zBuf;
node = globalCtx->lightCtx.listHead;
while (node != NULL) {
params = &node->info->params.point;
if (node->info->type == LIGHT_POINT_GLOW) {
f32 x, y;
u32 shrink;
uint32_t height;
pos.x = params->x;
pos.y = params->y;
pos.z = params->z;
func_8002BE04(globalCtx, &pos, &multDest, &wDest);
params->drawGlow = false;
wX = multDest.x * wDest;
wY = multDest.y * wDest;
x = wX * 160 + 160;
y = wY * 120 + 120;
shrink = ShrinkWindow_GetCurrentVal();
if ((multDest.z > 1.0f) && y >= shrink && y <= SCREEN_HEIGHT - shrink) {
wZ = (s32)((multDest.z * wDest) * 16352.0f) + 16352;
zBuf = OTRGetPixelDepth(x, y) * 4;
if (1) {}
if (1) {}
if (wZ < (zBuf >> 3)) {
params->drawGlow = true;
}
}
}
node = node->next;
}
}
void Lights_DrawGlow(GlobalContext* globalCtx) {
s32 pad;
LightNode* node;
node = globalCtx->lightCtx.listHead;
OPEN_DISPS(globalCtx->state.gfxCtx, "../z_lights.c", 887);
POLY_XLU_DISP = func_800947AC(POLY_XLU_DISP++);
gDPSetAlphaDither(POLY_XLU_DISP++, G_AD_NOISE);
gDPSetColorDither(POLY_XLU_DISP++, G_CD_MAGICSQ);
gSPDisplayList(POLY_XLU_DISP++, gGlowCircleTextureLoadDL);
while (node != NULL) {
LightInfo* info;
LightPoint* params;
f32 scale;
s32 pad[4];
info = node->info;
params = &info->params.point;
if ((info->type == LIGHT_POINT_GLOW) && (params->drawGlow)) {
scale = SQ(params->radius) * 0.0000026f;
gDPSetPrimColor(POLY_XLU_DISP++, 0, 0, params->color[0], params->color[1], params->color[2], 50);
Matrix_Translate(params->x, params->y, params->z, MTXMODE_NEW);
Matrix_Scale(scale, scale, scale, MTXMODE_APPLY);
gSPMatrix(POLY_XLU_DISP++, Matrix_NewMtx(globalCtx->state.gfxCtx, "../z_lights.c", 918),
G_MTX_NOPUSH | G_MTX_LOAD | G_MTX_MODELVIEW);
gSPDisplayList(POLY_XLU_DISP++, gGlowCircleDL);
}
node = node->next;
}
CLOSE_DISPS(globalCtx->state.gfxCtx, "../z_lights.c", 927);
}