void createNPC(UBYTE index, EntityType type){
fixed r;
UBYTE spriteIndex = (index + 1) << 1;
EntityData *npc = &(npc_data[index]);
npc_counts[npc->type]++;
//TODO: figure out why this doesn't work??!?
//npc->type = type;
//place at a random location off-screen
r.w = rand();
if (r.b.l & 1){
npc->position.x.b.h = r.b.l << 4;
npc->position.y.b.h = (r.b.l % 96) + 160;
} else {
npc->position.x.b.h = (r.b.l % 80) + 168;
npc->position.y.b.h = r.b.l << 4;
}
//TEMP start with random speed
r.w = rand();
//first 3 for x speed
npc->speed.x.w = (r.b.l & 0x7) - 3;//(-3,4)
r.w = r.w >> 2;
//another 3 for y speed (speeds share a bit)
npc->speed.y.w = (r.b.l & 0x7) - 3;//(-3,4)
r.w = r.w >> 2;
//initialize sprite tile reference register
//make sure sprite is in front of background
set_sprite_prop(spriteIndex, 0);
set_sprite_prop(spriteIndex + 1, 0);
//this is done inside npc_setVisibility, no need to do it twice right?
//tileSprite(spriteIndex, entity_tiles_ref[npc->type][0], npc->type);
placeSprite(spriteIndex, npc);
//last 4 for randomizing animation start point (nice-to-have)
npc->animFrame = 0;//r.b.l & (entity_anim_frames[type] - 1);
npc_setVisibility(npc, spriteIndex);
}
uint16 Screen::drawSprite(uint16 flexIndex, int16 x, int16 y) {
return placeSprite(_channelsUsedCount + 1, flexIndex, x, y);
}
void npc_update(){
UBYTE i, j, prev_frame, is_player_speed_negative;
EntityData *npc;
for( i=0, j=2; i != MAX_NUM_NPC; i++, j+=2){
npc = &(npc_data[i]);
//move based on the player's and NPCs speed
npc->position.x.w =
npc->position.x.w +
npc->speed.x.w -
player_data.speed.x.w;
npc->position.y.w =
npc->position.y.w +
npc->speed.y.w -
player_data.speed.y.w;
//animate dying sprites, whether they are visible or not
if (npc->dying){
prev_frame = npc->animFrame;
animate(j, npc);
//if we looped back to frame 0
// the cell is now officially dead
if (prev_frame && !(npc->animFrame)){
npc->dying = 0;
//now one fewer skin cell
npc_counts[SKIN]--;
//if that was the last skin cell, start the endgame!
if (!npc_counts[SKIN]){
npc_data[i].type = NEURON;
//force it to another position
//TODO: beware, this could mess some stuff up
npc_data[i].position.z = i & 3;
if (npc_data[i].position.z == player_data.position.z){
npc_data[i].position.z++;
}
createNPC(i, npc_data[i].type);
//hopefuly just setting visibility is enough
npc_setVisibility(&(npc_data[i]), j);
} else {
//randomly create another SKIN or IMMUNE cell
npc_data[i].type = ((UBYTE)rand()) & 1;
//visibility won't change since z-placement won't change
createNPC(i, npc_data[i].type);
}
} else {
//keep the sprite moving
placeSprite(j, npc);
}
} else if (npc->visibility != NONE){
if (player_checkCollision(npc)){
switch (npc->type){
case NEURON:
screen_data.state = WIN;
return;
case IMMUNE:
screen_data.state = LOSE;
return;
case SKIN:
//cut the player's speed in half
is_player_speed_negative =
(player_data.speed.x.b.h & 0x80U);
player_data.speed.x.w = player_data.speed.x.w >> 1;
if (is_player_speed_negative){
player_data.speed.x.b.h = player_data.speed.x.b.h | 0x80U;
}
is_player_speed_negative =
(player_data.speed.y.b.h & 0x80U);
player_data.speed.y.w = player_data.speed.y.w >> 1;
if (is_player_speed_negative){
player_data.speed.y.b.h = player_data.speed.y.b.h | 0x80U;
}
npc->dying = 1;
//0th frame matches last frame to avoid flicker at end of animation
npc->animFrame = 1;
}
}
placeSprite(j, npc);
animate(j, npc);
}
}
}
void LuaProxy::Graphics::placeSprite(int type, const LuaProxy::Graphics::LuaImageResource& img, int xPos, int yPos)
{
placeSprite(type, img.img, xPos, yPos, "");
}
void LuaProxy::Graphics::placeSprite(int type, const LuaProxy::Graphics::LuaImageResource& img, int xPos, int yPos, const std::string& extra)
{
placeSprite(type, img.img, xPos, yPos, extra, 0);
}
void LuaProxy::Graphics::placeSprite(int type, int imgResource, int xPos, int yPos)
{
placeSprite(type, imgResource, xPos, yPos, "");
}
void LuaProxy::Graphics::placeSprite(int type, int imgResource, int xPos, int yPos, const std::string& extra)
{
placeSprite(type, imgResource, xPos, yPos, extra, 0);
}
