4jcraft/targets/minecraft/client/renderer/entity/CreeperRenderer.cpp
2026-04-07 15:55:45 -05:00

108 lines
3.3 KiB
C++

#include "CreeperRenderer.h"
#include <math.h>
#include <memory>
#include "platform/renderer/renderer.h"
#include "minecraft/client/model/CreeperModel.h"
#include "minecraft/client/renderer/Textures.h"
#include "minecraft/client/renderer/entity/MobRenderer.h"
#include "minecraft/client/resources/ResourceLocation.h"
#include "minecraft/world/entity/LivingEntity.h"
#include "minecraft/world/entity/monster/Creeper.h"
ResourceLocation CreeperRenderer::POWER_LOCATION =
ResourceLocation(TN_POWERED_CREEPER);
ResourceLocation CreeperRenderer::CREEPER_LOCATION =
ResourceLocation(TN_MOB_CREEPER);
CreeperRenderer::CreeperRenderer() : MobRenderer(new CreeperModel(), 0.5f) {
armorModel = new CreeperModel(2);
}
void CreeperRenderer::scale(std::shared_ptr<LivingEntity> mob, float a) {
std::shared_ptr<Creeper> creeper = std::dynamic_pointer_cast<Creeper>(mob);
float g = creeper->getSwelling(a);
float wobble = 1.0f + sinf(g * 100) * g * 0.01f;
if (g < 0) g = 0;
if (g > 1) g = 1;
g = g * g;
g = g * g;
float s = (1.0f + g * 0.4f) * wobble;
float hs = (1.0f + g * 0.1f) / wobble;
glScalef(s, hs, s);
}
int CreeperRenderer::getOverlayColor(std::shared_ptr<LivingEntity> mob,
float br, float a) {
std::shared_ptr<Creeper> creeper = std::dynamic_pointer_cast<Creeper>(mob);
float step = creeper->getSwelling(a);
if ((int)(step * 10) % 2 == 0) return 0;
int _a = (int)(step * 0.2f * 255) +
25; // 4J - added 25 here as our entities are rendered with alpha
// test still enabled, and so anything less is invisible
if (_a < 0) _a = 0;
if (_a > 255) _a = 255;
int r = 255;
int g = 255;
int b = 255;
return (_a << 24) | (r << 16) | (g << 8) | b;
}
int CreeperRenderer::prepareArmor(std::shared_ptr<LivingEntity> _mob, int layer,
float a) {
// 4J - dynamic cast required because we aren't using templates/generics in
// our version
std::shared_ptr<Creeper> mob = std::dynamic_pointer_cast<Creeper>(_mob);
if (mob->isPowered()) {
if (mob->isInvisible())
glDepthMask(false);
else
glDepthMask(true);
if (layer == 1) {
float time = mob->tickCount + a;
bindTexture(&POWER_LOCATION);
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
float uo = time * 0.01f;
float vo = time * 0.01f;
glTranslatef(uo, vo, 0);
setArmor(armorModel);
glMatrixMode(GL_MODELVIEW);
glEnable(GL_BLEND);
float br = 0.5f;
glColor4f(br, br, br, 1);
glDisable(GL_LIGHTING);
glBlendFunc(GL_ONE, GL_ONE);
return 1;
}
if (layer == 2) {
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glEnable(GL_LIGHTING);
glDisable(GL_BLEND);
}
}
return -1;
}
int CreeperRenderer::prepareArmorOverlay(std::shared_ptr<LivingEntity> mob,
int layer, float a) {
return -1;
}
ResourceLocation* CreeperRenderer::getTextureLocation(
std::shared_ptr<Entity> mob) {
return &CREEPER_LOCATION;
}